210
SERVICE MANUAL COPYRIGHT © 2017 JVC KENWOOD Corporation No.RA054<Rev.001> 2017/6 B5B-7268-00 VHF DIGITAL TRANSCEIVER, UHF DIGITAL TRANSCEIVER RA054<Rev.001> 2017 6 SERVICE MANUAL B5B-7268-00 NX-3720H(G), NX-3720H, NX-3720(G), NX-3720, NX-3820H(G), NX-3820H, NX-3820(G), NX-3820 COPYRIGHT © 2017 JVC KENWOOD Corporation TABLE OF CONTENTS 1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-152 This product complies with the RoHS directive for the European market. This product uses Lead Free solder.

SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

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Page 1: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

SERVICE MANUAL

COPYRIGHT © 2017 JVC KENWOOD Corporation No.RA054<Rev.001>2017/6

B5B-7268-00

VHF DIGITAL TRANSCEIVER, UHF DIGITAL TRANSCEIVERRA054<Rev.001>20176SERVICE MANUALB5B-7268-00

NX-3720H(G), NX-3720H, NX-3720(G), NX-3720, NX-3820H(G), NX-3820H, NX-3820(G), NX-3820

COPYRIGHT © 2017 JVC KENWOOD Corporation

TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-72 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-304 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-335 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-152

This product complies with the RoHS directive for the European market. This product uses Lead Free solder.

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1-2 (No.RA054<Rev.001>)

Document CopyrightsCopyright 2017 by JVC KENWOOD Corporation. All rights reserved.No part of this manual may be reproduced, translated, distributed, or transmitted in any form or by any means, electronic,mechanical, photocopying, recording, or otherwise, for any purpose without the prior written permission of JVC KENWOODCorporation.

DisclaimerWhile every precaution has been taken in the preparation of this manual, JVC KENWOOD Corporation assumes no responsibilityfor errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein. JVC KENWOOD Corporation reserves the right to make changes to any products herein at any time for improvement purposes.

Firmware CopyrightsThe title to and ownership of copyrights for firmware embedded in KENWOOD product memories are reserved for JVC KENWOODCorporation. Any modifying, reverse engineering, copy, reproducing or disclosing on an Internet website of the firmware is strictlyprohibited without prior written consent of JVC KENWOOD Corporation. Furthermore, any reselling, assigning or transferring of thefirmware is also strictly prohibited without embedding the firmware in KENWOOD product memories.

Transceivers containing AMBE+2 Vocoder:The AMBE+2 voice coding technology is embedded in the firmware under the license of Digital Voice Systems, Inc.

CopyrightsThe Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by JVC KENWOOD Corporation is under license. Other trademarks and trade names are those of their respective owners.

NOTE• This equipment should be serviced by only qualified technicians.• Danger of explosion if the battery is incorrectly replaced; replace only with the same type.• To dispose of batteries, be sure to comply with the laws and regulations in your country or region.

TM

TM

Page 3: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-3

SPECIFICATIONNX-3720H(G)/3720H(K TYPE)

*1 25 and 30 kHz are not included in the models sold in the USA or US territories.Analog measurements made per TIA603. Specifications are measured according to applicable standards.JVC KENWOOD Corporation reserves the right to change specifications without prior notice or obligation.

GENERAL

Frequency Range 136~174 MHz

Max. Channels per Radio Up to 1000 channels with option

Number of Channels 512

Number of Zones 128

Channel Spacing Analog 12.5/15/25*1/30*1 kHz

Digital 6.25 /12.5 kHz

Operating Voltage 13.6V DC ±15%

Operating Temperature Range -22°F to +140°F (-30°C to +60°C)

Frequency Stability ±1.0 ppm

Dimensions (W x H x D) (Projections not included)

Radio with Control Head 6.30 x 1.69 x 6.30 in. (160 x 43 x 160 mm)

Weight (net) Radio with Control Head 2.65 lbs (1.2 kg)

RECEIVER

Sensitivity NXDN 6.25kHz Digital (3%BER) 0.20 μV

NXDN 12.5kHz Digital (3%BER) 0.25μV

DMR 12.5 kHz Digital (5% BER) 0.30μV

DMR 12.5 kHz Digital (1% BER) 0.45μV

Analog (12dB SINAD) 0.25μV

Selectivity Analog @ 12.5kHz 70dB

Analog @ 25kHz 80dB

Intermodulation Analog 70dB

Spurious Rejection Analog 80dB

Audio Distortion 2%

Audio Output 4W / 4ohm

TRANSMITTER

RF Power Output (H / M / L) 50W/30W/5W

Spurious Emission -73dB

FM Hum & Noise Analog @ 25 kHz 45dB

Analog @ 12.5kHz 40dB

Modulation Distortion 2%

Emission Designator 16K0F3E*1, 11K0F3E, 8K30F1E, 8K30F1D, 8K30F7W,4K00F1E, 4K00F1D, 4K00F7W, 7K60FXE, 7K60FXD,4K00F2D

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1-4 (No.RA054<Rev.001>)

SPECIFICATIONNX-3720(G)/3720(E TYPE)

Analog measurements made per TIA603. Specifications are measured according to applicable standards.JVC KENWOOD Corporation reserves the right to change specifications without prior notice or obligation.

GENERAL

Frequency Range 136~174 MHz

Max. Channels per Radio Up to 1000 channels with option

Number of Channels 512

Number of Zones 128

Channel Spacing Analog 12.5 / 20 / 25 kHz

Digital 6.25 /12.5 kHz

Operating Voltage 13.2V DC (10.8~15.6 V DC)

Operating Temperature Range -30°C to +60°C

Frequency Stability ±1.0 ppm

Dimensions (W x H x D) (Projections not included)

Radio with Control Head 160 x 43 x 160 mm

Weight (net) Radio with Control Head 1.2 kg

RECEIVER

Sensitivity NXDN 3 % BER (6.25 kHz/12.5 kHz) 0.20 μV / 0.28 μV

NXDN 1 % BER (6.25 kHz/12.5 kHz) -5.0 dBμV (0.28μV) / -2 dBμV (0.40μV)

DMR 12.5 kHz Digital (5 % BER) -4.5 dBμV (0.30μV)

DMR 12.5 kHz Digital (1 % BER) -2 dBμV (0.40μV)

Analog, EIA 12 dB SINAD (12.5/20&25 kHz) 0.25 μV

Analog, EN 20 dB SINAD (12.5/20&25 kHz) -1 dBμV (0.45 μV) / -3 dBμV (0.35 μV)

Selectivity Analog @ 12.5kHz 70dB

Analog @ 20kHz 78dB

Analog @ 25kHz 80dB

Intermodulation Analog 70dB

Spurious Rejection Analog 80dB

Audio Distortion 2%

Audio Output 4W / 4ohm

TRANSMITTER

RF Power Output (H / L) 25W/5W

Spurious Emission -36dBm 1GHz, -30dBm>1GHz

FM Hum & Noise Analog @ 25 kHz 50dB

Analog @ 20kHz 50dB

Analog @ 12.5kHz 45dB

Modulation Distortion 2%

Emission Designator 16K0F3E, 14K0F2D, 14K0F3E, 12K0F2D, 8K50F3E,7K50F2D, 8K30F1E, 8K30F1D, 8K30F7W, 4K00F1E,4K00F1D, 4K00F7W, 7K60FXE, 7K60FXD, 4K00F2D

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(No.RA054<Rev.001>)1-5

SPECIFICATIONNX-3820H(G)/3820H(K,K2 TYPE)

*1 25 kHz are not included in the models sold in the USA or US territories.Analog measurements made per TIA603. Specifications are measured according to applicable standards.JVC KENWOOD Corporation reserves the right to change specifications without prior notice or obligation.

GENERAL

Frequency Range K 450~520MHz

K2 400~470MHz

Max. Channels per Radio Up to 1000 channels with option

Number of Channels 512

Number of Zones 128

Channel Spacing Analog 12.5/ 25*1 kHz

Digital 6.25 /12.5 kHz

Operating Voltage 13.6V DC ±15%

Operating Temperature Range -22°F to +140°F (-30°C to +60°C)

Frequency Stability ±1.0 ppm

Dimensions (W x H x D) (Projections not included)

Radio with Control Head 6.30 x 1.69 x 6.30 in. (160 x 43 x 160 mm)

Weight (net) Radio with Control Head 2.65 lbs (1.2 kg)

RECEIVER

Sensitivity NXDN 6.25kHz Digital (3%BER) 0.20 μV

NXDN 12.5kHz Digital (3%BER) 0.25μV

DMR 12.5 kHz Digital (5% BER) 0.30μV

DMR 12.5 kHz Digital (1% BER) 0.45μV

Analog (12dB SINAD) 0.25μV

Selectivity Analog @ 12.5kHz 70dB

Analog @ 25kHz 80dB

Intermodulation Analog 70dB

Spurious Rejection Analog 80dB

Audio Distortion 2%

Audio Output 4W / 4ohm

TRANSMITTER

RF Power Output (H / M / L) 45W/30W/5W

Spurious Emission -75dB

FM Hum & Noise Analog @ 25 kHz 45dB

Analog @ 12.5kHz 40dB

Modulation Distortion 2%

Emission Designator 16K0F3E*1, 11K0F3E, 8K30F1E, 8K30F1D, 8K30F7W,4K00F1E, 4K00F1D, 4K00F7W, 7K60FXE, 7K60FXD,4K00F2D

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1-6 (No.RA054<Rev.001>)

SPECIFICATIONNX-3820(G)/3820(E TYPE)

Analog measurements made per TIA603. Specifications are measured according to applicable standards.JVC KENWOOD Corporation reserves the right to change specifications without prior notice or obligation.

GENERAL

Frequency Range 400~470MHz

Max. Channels per Radio Up to 1000 channels with option

Number of Channels 512

Number of Zones 128

Channel Spacing Analog 12.5 / 20 / 25 kHz

Digital 6.25 /12.5 kHz

Operating Voltage 13.2V DC (10.8~15.6 V DC)

Operating Temperature Range -30°C to +60°C

Frequency Stability ±1.0 ppm

Dimensions (W x H x D) (Projections not included)

Radio with Control Head 160 x 43 x 160 mm

Weight (net) Radio with Control Head 1.2 kg

RECEIVER

Sensitivity NXDN 3 % BER (6.25 kHz/12.5 kHz) 0.20 μV / 0.28 μV

NXDN 1 % BER (6.25 kHz/12.5 kHz) -5.0 dBμV (0.28μV) / -2 dBμV (0.40μV)

DMR 12.5 kHz Digital (5 % BER) -4.5 dBμV (0.30μV)

DMR 12.5 kHz Digital (1 % BER) -2 dBμV (0.40μV)

Analog, EIA 12 dB SINAD (12.5/20&25 kHz) 0.25 μV

Analog, EN 20 dB SINAD (12.5/20&25 kHz) -1 dBμV (0.45 μV) / -3 dBμV (0.35 μV)

Selectivity Analog @ 12.5kHz 68dB

Analog @ 20kHz 76dB

Analog @ 25kHz 78dB

Intermodulation Analog 70dB

Spurious Rejection Analog 80dB

Audio Distortion 2%

Audio Output 4W / 4ohm

TRANSMITTER

RF Power Output (H / L) 25W/5W

Spurious Emission -36dBm 1GHz, -30dBm>1GHz

FM Hum & Noise Analog @ 25 kHz 50dB

Analog @ 20kHz 50dB

Analog @ 12.5kHz 45dB

Modulation Distortion 2%

Emission Designator 16K0F3E, 14K0F2D, 14K0F3E, 12K0F2D, 8K50F3E,7K50F2D, 8K30F1E, 8K30F1D, 8K30F7W, 4K00F1E,4K00F1D, 4K00F7W, 7K60FXE, 7K60FXD, 4K00F2D

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(No.RA054<Rev.001>)1-7

SECTION 1PRECAUTION

This service manual does not describe PRECAUTION.

SECTION 2SPECIFIC SERVICE INSTRUCTIONS

2.1 SYSTEM SET-UP

Merchandise received

Choose the type of transceiver

KRA-40 GPS active antenna

A personal computer, programming interface (KPG-46U/46X),

and FPU (programming software) are required for programming.

KCT-60Connection cable

KCT-36

Extension cable

KES-5

External speakerIgnition sense cable

KCT-18KES-3

External speaker

(Option)

(Option)

(Option) (Option)(Option)

Delivery

Transceiver programming

(Option: NX-3720H(G), NX-3720(G), NX-3820H(G), NX-3820(G) only)

*Only when required.

Frequency range (MHz) RF powerType

TX/RX 136~174

TX/RX 136~174

TX/RX 136~174

25W

50W

50W

NX-3720(G) E

NX-3720H(G) K

NX-3820H(G) K

NX-3820H(G) K2

NX-3720H K

NX-3820H K

NX-3820H K2

TX/RX 450~520

TX/RX 136~174

TX/RX 450~520

45W

25W

45W

NX-3720 E

TX/RX 400~470

TX/RX 400~470

TX/RX 400~470

25W

45W

45W

NX-3820(G) E

TX/RX 400~470 25WNX-3820 E

Yes

No

Yes

GPS antenna

Yes

No

No

Yes

No

Yes

No

Page 8: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-8 (No.RA054<Rev.001>)

2.2 REALIGNMENT

2.2.1 Modes

*1:In order to use the Front panel programming mode, it isnecessary to purchase the "Front panel program" featureoption.

2.2.2 How to Enter Each Mode

*2 There is the two or three as how to enter.

2.2.3 Panel Test ModeSetting method refer to ADJUSTMENT.

2.2.4 Panel Tuning ModeSetting method refer to ADJUSTMENT.

Mode Function

User mode For normal use.

Panel test mode Used by the dealer to check thefundamental characteristics.

Panel tuning mode Used by the dealer to tune the transceiver.

PC mode Used for communication between thetransceiver and PC.

Data programming mode

Used to read and write frequency data andother features to and from the transceiver.

PC test mode Used to check the transceiver using thePC. This feature is included in the FPU.

Firmware programming mode

Used when changing the main program ofthe flash memory.

Clone mode Used to transfer programming data fromone transceiver to another.

Front panel programming mode

Frequency, signaling and features write tothe transceiver.

Transceiver information mode

Used to confirm the transceiver firmwareversion, Encryption Library version.

User mode

Data programming mode

PC tuning mode

Transceiver information mode

PC mode

Panel tuning modePanel test mode

Firmware programming mode

Clone mode

Front panel programming mode*1

PC test mode

Mode Operation

User mode Power ON

Panel test mode*2 • [ ] + Power ON

• [ ] + Power ONSelect the “Panel Test” using the [] / [] button.Press the [ ] button.

PC mode Received commands from PC

Panel tuning mode [Panel test mode] + [ ]

Firmware programming mode*2

• [ (AUX)] + Power ON

• [ ] + Power ONSelect the “Firmware Prog” using the [] / [] button.Press the [ ] button.

• If Write is performed by KFL, Firmware programming mode will start automatically.

Clone mode*2 • [ ] + Power ON

• [ ] + Power ONSelect the “Clone” using the [] / [] button.Press the [ ] button.

Front panel programming mode*2

• Press the PF button to which Front panel programming mode is set during the user mode.

• Press the [ ] button and enter the Menu mode.

Select the any icon assigned the Front panel programming mode using the [] / [] button.Press [ ] button.Select the “Panel Program” using the [] / [] button.Press the [ ] button.

Transceiver information mode*2

• [+] + Power ON

• [ ] + Power ONSelect the “Transceiver Info” using the [] / [] button.Press the [ ] button.

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(No.RA054<Rev.001>)1-9

2.2.5 PC Mode

2.2.5.1 PrefaceThe transceiver is programmed by using a personal computer,programming interface (KPG-46U/46X) and FPU (programmingsoftware).The programming software can be used with a PC. Figure 1shows the setup of a PC for programming.

Fig.1

2.2.5.2 Connection procedure(1) Connects the transceiver to the computer using the

interface cable (KPG-46U/46X).

Note:You must install the KPG-46U/46X driver in thecomputer to use the USB programming interface cable(KPG-46U/46X).

(2) When the POWER switch on, user mode can be enteredimmediately. When PC sends command the transceiverenter PC mode, and “PROGRAM” is displayed on the LCD.When data transmitting from the transceiver, the red LEDlights.When data receiving to the transceiver, the green LEDlights.

Note:The data stored in the computer must match the “ModelName” when it is written into the flash memory.

2.2.5.3 KPG-46U/46X description (USB programminginterface cable: Option)

The KPG-46U/46X is a cable which connects to a USB port on acomputer.When using the KPG-46U/46X, install the supplied CD (withdriver software) in the computer. The KPG-46U driver runs underWindows 7, 8.1, 10.The KPG-46X driver runs under Windows 7, 8.1, 10.The latest version of the USB driver is available for downloadfrom the following URL:http://www.kenwood.com/usb-com/(This URL may change without notice.)

2.2.5.4 Programming software KPG-D3/D3N descriptionThe FPU is the programming software for the transceiversupplied on a CD. This software runs under Windows 7, 8.1, 10.The data can be input to or read from the transceiver and editedon the screen.

Note:KPG-D3N can't be used for E type.

2.2.6 Firmware Programming Mode

2.2.6.1 PrefaceFlash memory is mounted on the transceiver. This allows thetransceiver to be upgrade when new features are released in thefuture. (For details on how to obtain the firmware, contactCustomer Service.)

2.2.6.2 Connection procedureConnect the transceiver to the personal computer using theprogramming interface (KPG-46U/46X). (Connection is same asin the PC mode.)

2.2.6.3 Programming(1) Start up the firmware programming software (KENWOOD

Firmware Loader). The KFL.exe exists in the KPG-D3/D3Ninstalled folder.

(2) Set the baud rate to "auto" or 1152000, 576000, 115200,and 57600.

(3) Set the firmware to be upgrade by file name item.(4) Enter the Firmware programming mode by using section

“2.2.2 How to Enter Each Mode”. Then, the yellow LED onthe transceiver light and "FIRMWARE PROG" is displayed.

(5) Check the connection between the transceiver and thepersonal computer, and make sure that the transceiver isin the Program mode.

(6) Press “Write” button in the window. When the transceiverstarts to receive data, the “LOADING” display lights.

(7) If writing ends successfully, the checksum is calculatedand a result is displayed.

(8) If you want to continue programming other transceivers,repeat step (4) to (7).

Note:If write is perfomed by KFL, Firmware programmingmode will start automatically even if Firmwareprogramming is set to disable in the programmingsoftware.

2.2.6.4 FunctionIf you press the [ (AUX)] button while “FIRMWARE PROG” isdisplayed, the checksum is calculated, and a result is displayed.If you press the [ (AUX)] button again while checksum isdisplayed, “FIRMWARE PROG” is redisplayed.

PC

KPG-46U/46X

+ Tuning cable

(E30-7754-05)

KPG-46U/46X

Transceiver

PC

USB

FPU

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1-10 (No.RA054<Rev.001>)

2.2.7 Clone ModeProgramming data can be transferred from one transceiver toanother by connecting them via their modular microphone jacks.The operation is as follows.

The following data cannot be cloned.• Tuning data• Transceiver Embedded Message• ESN (Electronic Serial Number) data

Button guide on the Clone/ Front Panel ProgrammingPassword input screen.

• Confirm ([ ] button): The password confirmation• Delete ([ ] button): Delete the latest digit from the current

password number (Press and hold to delete all passwordnumbers)

• Select([ ] button): Determine the latest digit of thepassword number.

(1) In the source transceiver, enter the clone mode by usingsection “2.2.2 How to Enter Each Mode”. When the Clone/Front Panel Programming Password is set to thetransceiver, "Input Password" is displayed on the LCD.If the password is not set, the transceiver displays "CLONEMODE".

(2) When you enter the correct password, “CLONE MODE” isdisplayed, the transceiver can be used as the cloningsource. The following describes how to enter thepassword.

(3)- How to enter the password using the MIC keypad;

If one of the buttons 0 to 9 is pressed while the “InputPassword” is displayed, the password number isdisplayed on the LCD.Each press of the button shifts the display in order to theleft.When you enter the password and press [ ] or [*]button, “CLONE MODE” displayed if the enteredpassword is correct. If password is incorrect, “InputPassword” is redisplayed.

- How to enter password using the [] and []buttons;

If the [] / [] button is pressed while “Input Password”is displayed, the Clone/ Front Panel ProgrammingPassword input screen is displayed.If the [] or [] button is pressed while the clone/ FrontPanel Programming Password input screen is displayed,the number (0 to 9) blinks on the LCD. When you pressthe [ ] button, currently selected number isdetermined. If you press the [ ] button after enteringpassword in this procedure, “CLONE MODE” isdisplayed if entered password is correct. If the passwordis incorrect, “Input Password” is redisplayed.

(4) Power ON the target transceiver.(5) Connecting the cloning cable (part No.E30-3382-05) to the

modular microphone jacks on the source and target.(6) Press [ ] button on the source while the source displays

“CLONE MODE”. The data of the source is sent to thetarget. While the target is receiving the data, “PROGRAM”is displayed. When cloning of the data is completed, thesource displays “END”, and the target automaticallyoperates in the User mode. The target can then beoperated by the same program as the source.

(7) The other target can be continuously cloned. When the [ ] button on the source is pressed while the sourcedisplays “END”, the source displays “CLONE MODE”.Carry out the operation in step (4) to (6).

Note:• Cannot be cloned if the Password (Write) is programmed to

the target.• “Model name” must be same to clone the transceiver.

Fig.2

2.2.8 Front Panel Programming ModeIf the Front Panel Programming Mode is used, the frequency orother data of the conventional channel is rewritable only by thetransceiver.Moreover, the conventional channel can be added.

The following setup items can be changed or added byusing the Front panel programming mode.

• RX/TX Frequency• Channel Type• Transmit Mode (Mixed mode only)• Channel Spacing• Decode QT/DQT/RAN, Encode QT/DQT/RAN• Color Code• Slot Selection• Transmit Power• Channel Name

Button guide on the Clone/ Front Panel ProgrammingPassword input screen.

• Confirm ([ ] button): The password confirmation• Delete ([ ] button): Delete the latest digit from the current

password number (Press and hold to delete all passwordnumbers)

• Select ([ ] button): Determine the latest digit of thepassword number.

2.2.8.1 Enter to the Front panel programming mode.Enter to the Menu Mode by pressing [Front Panel Mode] PFbutton or [Menu] button. When the Front Panel Mode is selected,it can enter to the Front panel programming mode.If the Clone/Front panel programming Password is not set to thetransceiver, "Panel Program" is displayed on the LCD.If the Clone/Front panel programming Password is set to thetransceiver, "Panel Program" is displayed on the LCD when youenter the correct password while “Input Password” is displayed.

Cloning cable

(E30-3382-05)

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(No.RA054<Rev.001>)1-11

2.2.8.2 Data WritingBefore moving to next Zone/Channel, “Keep This Change?”appears on the LCD, if you select “OK”, the new data is writtento memory. If you select “Cancel”, the new data not be written;the new data will be erased.• The setup items for Front panel programming mode are as

follows.

*3: In "Channel Type" display, "Transmit Mode" can beentered only when Mixed mode is selected.

• Button operation

No. Setup item Display Remarks

1 RX Frequency RX Frequency Receive Frequency

2 TX Frequency TX Frequency Transmit Frequency

3 Channel Type Channel Type Analog/NXDN/DMR

4 Transmit Mode*3

Transmit Mode Analog/NXDN/DMR

5 Channel Spacing

Channel Space Analog: 12.5kHz/20kHz/25kHzNote: 20kHz is applied for E type only.

NXDN:6.25kHz/12.5kHz

DMR: 12.5kHz

6 RX Signaling RX QT/DQT Receive QT/DQT

7 TX Signaling TX QT/DQT Transmit QT/DQT

8 RX RAN RX RAN None, 1~63

9 TX RAN TX RAN None, 1~63

10 Color Code Color Code 0~15

11 Slot Selection Slot Selection Slot 1, Slot 2

12 Transmit Power Transmit Power

Low/Medium/High

13 Channel Name Channel Name

No. Setup item Display Remarks

Button\Item

Zone Select Channel Select RX Frequency TX Frequency Channel Type Transmit Mode *5

Channel Spacing

[ ] Decision Decision Decision Decision Decision Decision Decision

[ ] Unused Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

[ ] Unused Unused Go to the TX Frequency

Go to the RX Frequency

Unused Unused Unused

[ ] Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

[] Zone change Channel change Frequency up Frequency up Channel type change

Transmit Mode Change

Channel Spacing Change

[] Zone change Channel change Frequency down Frequency down Channel type change

Transmit Mode Change

Channel Spacing Change

[] Unused Unused Frequency step change

Frequency step change

Unused Unused Unused

[] Unused Unused Frequency step change

Frequency step change

Unused Unused Unused

MICKeypad[0] ~ [9]

Zone number select

Channel number select

Go to the direct enter mode Channel number select (1,2 or 3)

Transmit Mode number select (1 or 2)

Channel spacing select *4

MICKeypad [*]

Decision Decision Decision Decision Decision Decision Decision

MICKeypad [#]

Unused Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

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1-12 (No.RA054<Rev.001>)

*4: K typeChannel spacing select (1 or 2)E typeChannel spacing select (1, 2 or 3)

*5: Mixed Mode only

• Direct enter mode

Button\Item

RX Signaling TX Signaling RX RAN TX RAN Color Code Slot Selection

Transmit Power

Channel Name

[ ] Decision Decision Decision Decision Decision Decision Decision Decision

[ ] Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item/Delete

[ ] Unused Unused Unused Unused Unused Unused Unused Character/Digit switching

[ ] Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

Exit panel program mode

[] Signaling number change

Signaling number change

RX RAN up TX RAN up Color Code up

Slot up Transmit power change

Go to the direct enter mode

[] Signaling number change

Signaling number change

RX RAN down

TX RAN down

Color Code down

Slot down Transmit power change

[] Signaling type change

Signaling type change

RX RAN ON/OFF

RX RAN ON/OFF

Unused Unused Unused

[] Signaling type change

Signaling type change

RX RAN ON/OFF

RX RAN ON/OFF

Unused Unused Unused

MIC Keypad [0] ~ [9]

Go to the direct enter mode Slot number select (1 or 2)

Transmit power select (1, 2 or 3)

MIC Keypad [*]

Decision Decision Decision Decision Decision Decision Decision Decision/ Character/ Digit switching

MIC Keypad [#]

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Back to the previous item

Button\Item

RX Frequency

TX Frequency

RX Signaling

TX Signaling

RX RAN

TX RAN

Color Code

Channel Name

[ ] Decision Character/Channel name decision

[ ] Delete

[ ] Unused Input character switching

[ ] Exit panel program mode

[] Unused Character selection (upper casecharacter → lower-case character →digit → upper case character...)

[] Character selection (upper casecharacter → lower-case character →digit → upper case character...)

[] Move a cursor to the right

[] Move a cursor to the left

MIC Keypad[0] ~ [9]

Add a digit to the current number

MIC Keypad [*]

Decision Input character switching

MIC Keypad [#]

Delete/Back to the previous item Delete

Page 13: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-13

• Front panel programming mode flow chart

Input Password

Front panel Programming mode

tceleS enoZ?egnahC sihT peeK

tceleS lennahCemaN lennahC

Transmit Power Low Medium High Blank Channel Select the setting channel.

"System Type = Conventional"

there is more than two.

System Select Analog DMR or NXDN

RX Frfequency

FFOycneuqerF XT

golanAepyT lennahC

12.5kHz 25.0kHz 20.0kHz

When the KPG-D3N is used, 25.0kHz may not be allowed depends on the frequency (K, K2 types only).

Channel Spacing 12.5kHz

RX Signaling OFF QT DQT N DQT I

TX Signaling OFF QT DQT N DQT I

Color Code

Slot Selection

DMR

NXDN

[Channel Type]:"DMR","Mixed"(Transmit Mode:DMR) and

when two kinds of Channel Type is set.

[Channel Type]: "Analog"

[TX Frequency]: "OFF"

[Channel Type]: "Analog"

[Channel Type]: "Analog","Mixed"(Transmit Mode: NXDN),

"Mixed"(Transmit Mode: DMR) and when a kind of Channel Type is set.

[TX Frequency]: Other than "OFF"

[Channel Type]: "Analog","Mixed"(Transmit Mode: NXDN),"Mixed"(Transmit Mode: DMR)

Clone/Front Panel Password

[TX Frequency]: Other than "OFF"[Channel Type]: "DMR","Mixed"(Transmit Mode: DMR)

RX RAN

TX RAN

[TX Frequency]: "OFF"[Channel Type]: "DMR"

[System Type]: "DMR"

[System Type]: "NXDN"

6.25Hz

[Channel Type]: "NXDN","Mixed"(Transmit Mode: NXDN)

[ ]

[ ]

[ ] or [ ]

[No]

[Channel Type]: "Analog","Mixed"(Transmit Mode: NXDN),"Mixed"(Transmit Mode: DMR)

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[TX Frequency]: Other than "OFF"

[Channel Type]: "NXDN","Mixed"(Transmit Mode: NXDN)

[Channel Type]: "NXDN",

"Mixed"(Transmit Mode:NXDN) and

when two kinds of Channel Type is set.

[ ]

[ ][TX Frequency]: "OFF"

[Channel Type]: "NXDN"

[ ]

[Channel Type]: "NXDN",

"Mixed"(Transmit Mode: NXDN)

[ ]

[ ] or [ ] [ ] or [ ]

[ ] or [ ]

Mixed

[System Type]: "DMR" or ”NXDN” and [Channel Type]: "Mixed"[ ] or [ ]

[ ] or [ ]

[ ] or [ ]

[ ] or [ ]

[ ] or [ ] [ ] or [ ] [ ] or [ ]

[ ] or [ ] [ ] or [ ] [ ] or [ ]

Enter the Front panel programming mode

by using section "2.2.2 How to Enter Each Mode".

[ ]

[ ] or [ ]

Transmit Mode select golanA

DMR

NXDN

[System Type]: "DMR"

[System Type]: "NXDN"

[ ] or [ ]

[ ] or [ ]

[ ] or [ ][ ] or [ ]

[Channel Type]: "Mixed" and

when Channel Spacing in two kinds of Channel Type is set.

Page 14: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-14 (No.RA054<Rev.001>)

2.2.9 Transceiver Information ModeUse this function to confirm the transceiver firmware version, Encryption Library Version.

(1) Enter the Transceiver Information mode by using section "2.2.2 How to Enter Each Mode".(2) The transceiver firmware version appears on the LCD.(3) Use the [] and [] buttons to select the confirmation items.

(4) To exit the transceiver information mode, turn the transceiver power OFF.

Note:The Encryption Library Version will also display Radio Feature License (KWD-3004AE) as Inactive.

2.3 INSTALLATION

2.3.1 Connection Cable (KCT-60: Option)The KCT-60 connection cable kit is used to connect thetransceiver to a Horn alert cable, KCT-18 (Ignition sense cable),KES-5 (External speaker), or through the KCT-36 extensioncable.

2.3.1.1 Installing the KCT-60 (Connection cable) in thetransceiver

(1) Remove the ACC. cap on the rear of the transceiver.(2) Connect the D-sub connector of the KCT-60 to the D-sub

15-pin terminal of the transceiver.(3) Connect the 15-pin connector of the KCT-60 to a Horn alert

cable, KCT-18, KES-5, or through a KCT-36 extensioncable.

Note:You must setup using the KPG-D3/D3N.

2.3.1.2 Terminal function

2.3.2 Horn Alert FunctionThe Horn alert function (max. 2A drive) is enabled by installingthe KCT-60 in the transceiver.

2.3.2.1 Installation Procedure(1) Remove the ACC. cap on the rear of the transceiver.(2) Connect the D-sub connector of the KCT-60 to the D-sub

15-pin terminal of the transceiver.(3) Insert the two crimp terminals of the Horn alert cable to pins

13 and 14 of the square plug.(4) Connect the square plug to the 15-pin connector of the

KCT-60.(5) Connect the remaining two Horn alert cables to your car

Horn alert signal control.The internal FET switch can be controlled by turning the HAfunction on/off and by using a signaling decode output. Themaximum current of HA is 2A. This switch is the FET switchof P-channel type. Therefore, a DC power supply isnecessary to use the HR1. The voltage range is from 5V to16V.

Note:You must set up using the KPG-D3/D3N.

Transceiver

firmware versionEncryption Library

Version

[ ]/[ ]

[ ]/[ ]

D-sub 15-pin Pin No. Name Molex 15-pin Pin No.

1 SB 1

2 IGN 2

3 PA or EXT-SP 12

4 DO 4

5 DI 5

6 FNC1 9

7 FNC2 11

8 FNC3 7

9 FNC4 6

10 FNC5 8

KCT-60

Horn alert cable,

KCT-18, KES-5 or through

KCT-36 extension cable

11 FNC6 10

12 5C -

13 HR1 13

14 HR2 14

15 GND 3

D-sub 15-pin Pin No. Name Molex 15-pin Pin No.

3. GND

13. HR1

14. HR2

13

14 Square plug

13

14

15

10

11

12

7

8

9

4

5

6

1

2

3

KCT-60

Crimp terminalHorn alert cable

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(No.RA054<Rev.001>)1-15

2.3.3 Ignition Sense Cable (KCT-18: Option)The KCT-18 is an optional cable for enabling the ignitionfunction. The ignition function lets you turn the transceiver poweron and off with the car ignition button.

2.3.3.1 Installing the KCT-18 (Ignition sense cable) in thetransceiver

2.3.4 External Speaker (Option)

2.3.4.1 KES-5External speaker KES-5 can be installed for KCT-60.

Connection procedure(1) Remove the ACC. cap on the rear of the transceiver.(2) Connect the D-sub connector of the KCT-60 to the D-sub

15-pin terminal of the transceiver.(3) Insert the two crimp terminals of the KES-5 to pins 3 and

12 of the square plug.(4) Connect the square plug to the 15-pin connector of the

KCT-60.

Note:You must set up using the KPG-D3/D3N.Before the external speaker can be used, you must assignone of the buttons as “External Speaker”, using the KPG-D3/D3N.

2.3.5 Changing Serial Port Level

2.3.5.1 Change FNC1 (TXD) and FNC2 (RXD) of D-SUB 15-pin connector from TTL level to RS-232C level

FNC1 (TXD /6pin ) and FNC2 (RXD /7pin ) of D-SUB 15-pinconnector are confi gured at the TTL level as the default value.But you can change these serial port level to RS-232C levelthrough the RS-232C level converter IC (IC605) by confi guringthe port.Remove the R625, R633 and R634 chip jumpers and sol-der thechip jumpers to R605, R610 and R611.

2.3.5.2 Change FNC1 (TXD), FNC2 (RXD), FNC3 (RTS) andFNC4 (CTS) of D-SUB 15-pin connector from TTLlevel to RS-232C level

FNC1 (TXD /6pin ), FNC2 (RXD /7pin ), FNC3 (RTS /8pin ) andFNC4 (CTS /9pin ) of D-SUB 15-pin connector are configured atthe TTL level as the default value. But you can change theseserial port level to RS-232C level through the RS-232C levelconverter IC (IC605) by confi guring the port.Remove the R623, R625, R630, R631, R633 and R634 chipjumpers and solder the chip jumpers to R604, R605, R608,R609, R610 and R611.

In the case of 5-1.[TTL level]R625,R633 and R634: 0ohm chip jumper.R605, R610 and R611: open.[RS-232C level]R605, R610 and R611: 0ohm chip jumper.R625, R633 and R634: open.

In the case of 5-2.[TTL level]R623, R625, R630, R631, R633 and R634: 0ohm chip jumper.R604, R605, R608, R609, R610 and R611: open.[RS-232C level]R604, R605, R608, R609, R610 and R611: 0ohm chip jumper.R623, R625, R630, R631, R633 and R634: open.

2.3.6 Changing of Signal Type

2.3.6.1 Change signal output of D-SUB connector fromDEO to AFO

The output (4pin) of D-SUB 15-pin connector is confi gured at theDEO as the default value. Remove the R613 chip jumper and solder the clip jumper toR612.

2.3.6.2 Change signal input of D-SUB connector from DI toMI2

The input (5pin) of D-SUB 15-pin connector is confi gured at theDI as the default value.Remove the R659 chip jumper and solder the chip jumper toR601.

KCT-60

2

Ignitionline of the car

Square plug

13

14

15

10

11

12

7

8

9

4

5

6

1

2

3

KCT-18

KCT-60

Square plug

13

14

15

10

11

12

7

8

9

4

5

6

1

2

3

12

3

Black lead

Black/

White lead

7 8

11 12 15 16

R625

R605

R631

R609

R623

R604

R634

R611

R633

R610

R630

R608

R601

R659

R613

R612

5 6

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1-16 (No.RA054<Rev.001>)

2.4 CIRCUIT DESCRIPTION

2.4.1 OverviewThe NX-3720H/3720 is a VHF Analog FM & Digital Mobile transceiver designed to operate in the frequency range of 136 to 174MHz.The NX-3820H/3820 is a UHF Analog FM & Digital Mobile transceiver designed to operate in the frequency range of 450 to 520MHz(K) or 400 to 470MHz (K2, E).The unit consists of a transceiver IC, a transmitter, a digital control unit, and a power supply circuit.

2.4.2 Frequency ConfigurationThe receiver uses the direct conversion system. Incoming signals from the antenna are mixed with the local signal from the PLL circuitand converted to the baseband signal. The transmit signal frequency is generated by the VCO/PLL, and modulated by the signal fromthe DSP. It is then amplified and fed to the antenna.

Fig.1 Frequency Configuration

2.4.3 Receiver System

2.4.3.1 RF circuitThe receive signal from ANT SW (D205, D206, D207, D208 and D209) passes through the high-pass filter (L303, L304, L313, L315and L317 (L315 and L317 are the NX-3720H/3720 only.)) to remove unwanted signals and amplified by a RF amplifier (incorporatedin IC302) . The signal is then fed to the mixer (incorporated in IC302) and converted to the baseband signal.

2.4.3.2 Baseband circuitThe baseband signal is then be fed into an ADC (incorporated in IC302), generates the I and Q data. This data is in the form of SerialInterface, and sent to the MPU/DSP (IC404).

Fig.2 RF and Baseband circuit

2.4.3.3 Audio amplifier circuitAudio processing (high-pass filter, low-pass filter, de-emphasized and so on) at Analog FM mode and decoding at Digital mode areprocessed by MPU/DSP. I2S signal from DSP is converted to audio signal at IC607. The signal goes to internal speaker and connectorfor external speaker (J2) through the electronic volume control (IC412), pre amplifier (IC608) and audio power amplifier (IC601).

ANT SW

FINAL AMP

DRIVE AMP

TRANSCEIVER IC

VCO

TCXO 19.2MHz

BASEBAND CIRCUIT

CODEC

AF AMP

MIC

SP

ANT

ANT

LPF SW

D205, D206

D207, D208

D209

ANT

L303,L304

L313,L315

L317

HPF

IC302

L308, L309

L310, L311

HPF

RFAMP MIXER

PLL

VCO

ADC

Serial

I/F

IC404

MPU/DSP

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(No.RA054<Rev.001>)1-17

2.4.4 Transmitter System

2.4.4.1 Audio Band CircuitThe signal from microphone is amplified and converted to digital signal by IC607. IC607 includes AGC function.Digital signal is transferred to IC404.

2.4.4.2 Baseband CircuitThe audio signal transferred from IC607 is processed at IC404.Voice signals of 300Hz or lower and frequencies of 3 kHz or higher arecut off and an audio range 300Hz to 3 kHz is extracted. The audio signal is then pre-emphasized in FM mode and synthesized withthe signals, such as QT and DQT, as required, and is transferred to PLL Frequency Synthesizer block in IC302. The DTMF and MSKbaseband signals are also generated by IC404.In Digital mode, the audio signal is converted to the 4-Level FSK baseband signal and is transferred to PLL Frequency Synthesizerblock in IC302.

2.4.4.3 Drive and Final amplifierThe RF signal from IC302 is amplified by pre-drive amplifier (IC202). The output of the pre-drive amplifier is amplified by the driveamplifier (Q201) and RF Power module (IC201) to 50W [NX-3720H], 45W [NX-3820H], 25W [NX-3720, NX-3820] (5W when the poweris low). IC202 is MMIC.Q201 is MOS FET. The output of the final amplifier is then passed through the coupler, antenna switch (D205,D206 and D207), harmonic filter (LPF) and applied to the antenna terminal.

2.4.4.4 APC circuitThe Automatic transmission power control (APC) circuit controls the transmitter output in adjusted value by monitoring it with a coupler.RF detection and comparison functions are included in the power-control IC (IC205).The power control IC output is given as a drive source of the RF power module’s gate (IC201), and completes APC feedback loop.When a normal antenna load is connected, forward RF Power is detected by the coupler and direct in power-control IC (IC205).Forward RF Power is converted into DC voltage in IC205 and compared with the SPC.The output voltage goes through DC amp (IC203 2/2) to Drive amp (Q201) and RF Power module (IC201).The voltage controls the gate bias voltage of Q201 and IC201, and keeps transmission output stable.

Fig.3 Drive and Final amplifier and APC circuit

2.4.5 PLL Frequency Synthesizer

2.4.5.1 TCXO (X401)TCXO (X401) generates a reference frequency of 19.2MHz for the PLL frequency synthesizer. This reference signal is buffered byQ401. And it is distributed to PLL (IC302).The oscillation frequency is adjusted TCXO directly by controlled the D/A converter of FCNT.

IC302 Pre-Drive

IC202 Q201

Drive

Gate Bias 1 Gate Bias 2

IC201

Final

SPC

IC205

Coupler

PA

CTRL

DC

AMP

IC203

DC

AMP

REV

DETREV

D204

ANT

SW

D205,D206 D207 D208,D209

ANT

LPF

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1-18 (No.RA054<Rev.001>)

2.4.5.2 VCO• NX-3720H (K), NX-3720 (E)

There is one VCO contain TX VCO and RX VCO.The VCO (Q105) generates the carrier for the transmitter and the receiver. VCO oscillation frequency range is 272 to 348MHz. Thetransmit frequency range is same as receiver frequency range.The local signal frequency range is also 272 to 348MHz.The oscillation frequency is divided into two by IC 302 and it becomes the use frequency.The VCO oscillation frequency is determined by voltage control terminals "CP" and "ASSIST".The voltage control terminal "CP" is controlled by PLL (IC302). The voltage control terminal "ASSIST" is controlled by the controlvoltage from D/A converter (IC411).For the modulation input terminal, "VCO_MOD" of PLL (IC302), the output frequency changes according to the applied voltage. Thisis used to modulate the VCO output.

• NX-3820H (K)There is one VCO contain TX VCO and RX VCO.The VCO (Q105) generates the carrier for the transmitter and the receiver. VCO oscillation frequency range is 300 to 346.7MHz.The transmit frequency range is same as receiver frequency range.The local signal frequency range is 900 to 1040MHz. The local signal is three times the number of VCO oscillation frequency range.The output frequency is divided into two by IC 302 and it becomes the use frequency.The VCO oscillation frequency is determined by voltage control terminals "CP" and "ASSIST".The voltage control terminal "CP" is controlled by PLL (IC302). The voltage control terminal "ASSIST" is controlled by the controlvoltage from D/A converter (IC411).For the modulation input terminal, "VCO_MOD" of PLL (IC302), the output frequency changes according to the applied voltage. Thisis used to modulate the VCO output.

• NX-3820H (K2), NX-3820 (E)There is one VCO contain TX VCO and RX VCO.The VCO (Q105) generates the carrier for the transmitter and the receiver. VCO oscillation frequency range is 266.7 to 313.3MHz.The transmit frequency range is same as receiver frequency range.The local signal frequency range is 800 to 940MHz. The local signal is three times the number of VCO oscillation frequency range.The output frequency is divided into two by IC 302 and it becomes the use frequency.The VCO oscillation frequency is determined by voltage control terminals "CP" and "ASSIST".The voltage control terminal "CP" is controlled by PLL (IC302). The voltage control terminal "ASSIST" is controlled by the controlvoltage from D/A converter (IC411).For the modulation input terminal, "VCO_MOD" of PLL (IC302), the output frequency changes according to the applied voltage. Thisis used to modulate the VCO output.

2.4.5.3 PLL ICPLL (IC302) compares the difference in phases of the VCO oscillation signal and the TCXO(X401) reference frequency. And it returnsthe difference voltage to the VCO CP terminal and realizes the "Phase Locked Loop".This allows the VCO oscillation frequency to accurately match (lock) the desired frequency.When the frequency is controlled by the PLL, the frequency convergence time increases as the frequency difference increases whenthe set frequency is changed. To supplement this, The ASSIST Voltage from D/A converter (IC411) is used before control by the PLL(IC302) to bring the VCO oscillation frequency close to the desired frequency. As a result, the VCO CP voltage does not change andis always stable at approx. 2.5V.The desired frequency is set for the PLL (IC302) by the MPU/DSP (IC404) through the 3-line "/DCR_CS", "DCR_DO", "BCLK" serialbus for PLL. IC404 monitors through the "PLD", whether the PLL (IC302) is locked or not. If the VCO does not lock to desired frequency(unlock), the "PLD" logic is low.

2.4.6 Control CircuitThe control circuit consists of MPU/DSP (IC404) and its peripheral circuits. IC404 mainly performs the following;

(1) Switching between transmission and reception by PTT signal input.(2) Reading system, zone, frequency, and program data from the memory circuit.(3) Sending frequency program data to the PLL.(4) Controlling the audio mute circuit by decode data input.

2.4.6.1 MPUThe MPU/DSP (IC404) is 32bit RISC processor and Fixed/Floating-Point VLIW DSP, equipped with peripheral function.This MPU operates at 288MHz (MAX) clock and 3.2V /1.8V/1.2V DC. Controls the flash memory, Mobile DDR, the receive circuit, thetransmitter circuit, the control circuit, and the display circuit and transfers data to or from an external device.

2.4.6.2 Memory CircuitMemory circuit consists of the MPU/DSP (IC404) and the Mobile DDR (IC402), the flash memory (IC401). The flash memory hascapacity of 512Mbit that contains the transceiver control program for the MPU and stores the data. It also stores the data for transceiverchannels and operating parameter that are written by the FPU. This program can be easily written from external devices. The MobileDDR has capacity of 512Mbit. The MPU copies the program to the Mobile DDR from Flash memory. And MPU is used as a work areaMobile DDR.

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(No.RA054<Rev.001>)1-19

Flash memory

Note:The flash memory stores the data that is written by the FPU (KPG-D3/D3N), tuning data (Deviation, Squelch, etc.), and firmwareprogram (User mode, Test mode, Tuning mode, etc.). This data must be rewritten when replacing the flash memory.

Mobile DDR (static memory)

Note:Mobile DDR is used as a work area of the MPU.

2.4.6.3 LCDLCD interface connector (CN6) of the SUB unit.The LCD is controlled using parallel interface from MPU/DSP (IC404) through the interface connectors (CN1 of the TX-RX unit andCN7 of SUB unit) and flexible cable.

2.4.6.4 Button Detection CircuitButtons are detected using I/O Expander IC (IC6) of the SUB unit. If pressed button is detected by IC6, it is informed to MPU/DSP(IC404) of the TX-RX unit through serial line.

2.4.6.5 DSPThe DSP circuit consists of a MPU/DSP (IC404) and processes the baseband signal. The DSP operates at 288MHz (MAX) clock, theI/O section operates at 3.2V/1.8V and the core section operates at 1.2V. The DSP carries out the following processes:• 4Level FSK processing• Analog FM pre-emphasis/de-emphasis• Vocoder processing between audio codec and modulation/demodulation• CAI processing, such as error correction encoding• QT/DQT encoding/decoding• DTMF encoding/decoding• MSK encoding/decoding• 2-tone /5-tone encoding/decoding• Compressor/expander processing• Voice scrambler processing• Transmit/receive audio filtering processing• Microphone amplifier AGC processing• Audio mute processing• Modulation level processing• Active Noise Reduction• Voice recording/playback processing• Voice announce processing

2.4.7 Power Supply Circuit+B is connected to RF Power Module, 50BU regulator (Q15, Q16 and D13) through the fuse (F1), DC/DC converter IC (IC25) via fuse(F1), SB1 switch (Q12 and Q13) through the fuse (F4) and SB2 switch (Q17 and Q18) through the fuse (F5).Q15, Q16 and D13 regulates +B voltage to 5V (50BU). Then IC13 regulates 50BU to 3.1V (31BU). Then IC15 regulates 31BU to 1.2V(12BU). 50BU, 31BU and 12BU operate whenever +B is supplied.IC25 regulates +B voltage to 5.4V (54M). 54M is controlled by BAT_CNT signal from Power management IC (IC22). When Powerswitch is turned on, BAT_CNT signal is controlled by /PSW signal. 54M goes to DC/DC converter ICs (IC24, IC12) and AVR ICs (IC20,IC17, IC26, IC609, IC23).IC24 (12M) is enabled while the 54M is operating. 12M provides the power to the MPU/DSP (IC404) and turns on IC12 (18M). 18Mprovides the power to the MPU/DSP and DDR (IC402) and turns on IC20 (32M). 32M provides the power to the MPU/DSP, Flashmemory (IC401) and many control circuits and turns on IC17 (32A), IC26 (50A). Then 32A turns on IC21 (18M_3). The Power management IC (IC22) watches +B voltage. If +B voltage is higher than 8.5V, IC22 outputs high voltage to the /BINTterminal. If the /BINT is high, SB1 (Q12 and Q13) and SB2 (Q17 and Q18) are turned on by SBC signal from MPU/DSP (IC404). Inthe same way, IC609 (50AC) and IC23 (50C) and IC19 (32C) are turned on by SBC. 50C is fed to IC14 (200C). IC14 (200C) is theDC/DC boost converter. The 200C circuit then outputs approximately +20VDC. SB1 supplies SUB unit and Audio power amplifier (IC601) with +B voltage. SB2 supplies D-sub unit and 9VAVR (IC1) with +B voltage.Then IC1 regulates +B to 9V (90C). Then IC16 regulates 90C to 5V (50CT). If the MPU/DSP (IC404) controls TXC, ANT SW andASSW signals to High, Q20, Q23 (90T), Q21, Q22 (90ANT) and Q206 are turned on and transmission circuits are enabled to transmit.When the Power management IC (IC22) and MPU/DSP (IC404) detect /PSW signal (Power switch), /IGN signal (Ignition sense) and/BINT signal, they set the SBC signal to Low, and turn the transceiver power off.When D20, Q11 detect over-voltage condition, they turn SB1 and SB2 off, and transfer that the MPU/DSP (IC404) through IC22.

Page 20: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-20 (No.RA054<Rev.001>)

Fig.4 Power Supply Circuit

54M 12M

31BU

12BU

18M

18M_3

CODEC DVDD

18M

Power management

Sub unit

Module unit

50A

[SBC]

32C

200C50C

50B F1

20V DC/DC

54M

SB1

D-sub 15

TX circuit90C

[SBC]

90ANT

SB2

TX PreDrive(MMIC)50CT

Sub unit

Audio Power Amp

[TXC]

90T

Antenna switch

IC1

IC16

IC19

3.2V AVR

50AC

[SBC]

[SBC]

+

[ANTSW]

[ASSW]

IC255.4V DC/DC

(IC22)Power management IC

[BAT_CNT]from

Q15,Q16,D13

5V Reg

IC13

3.1V AVR

BackUpBattery

IC151.2V AVR

IC241.2V DC/DC

IC12DC/DC1.8V

MPU/DSP I/O(B),DDR

Mobile DDR2,Sub unit

RF Power Module

MPU/DSP PLL

MPU/DSP Core

MPU/DSP RTC

Power management IC

Flash ROMV(I/O) & 3state(512M)

MPU/DSP I/O(A,C) DVDD, USB_VDDA33

Flash ROM, I/O Expander,ADC, CODEC

19.2M TCXO circuit, Uart SW, RS232C

driver, SP GND switch clock, Sub unit

8bit/8ch DAC

12bit/4ch DAC

CODEC AVDD,DRVDD

I/O Expander, D-sub level shift.

8bit/16ch ADC AVCC

OPamp for VREF/25REF

MPU/DSP USB_VBUS

SP GND switch driver

Sub unit

D-sub 15

VCO Assist

Direct Conversion Transceiver

RF Detector / Controller

IC21

DC SW

32A

32M3.2V AVR

IC20

32A

32M

IC173.2V AVR

32M

IC265V AVR

IC6095V AVR

IC235V AVR

IC14

F4

F5

Q12, Q13DC SW

Q17, Q18DC SW

5V AVR

Q206

Q 20, Q 23DC SW

DC SW

Q 21, Q 22DC SW

9V AVR

Page 21: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-21

2.4.8 Signaling Circuit

2.4.8.1 Encode (QT/DQT/DTMF/2-tone /MSK)Each signaling data signal of QT, DQT, DTMF, 2-tone and MSK is generated by IC404, superposed on a modulation signal and outputto VCO and PLL.

2.4.8.2 Decode (QT/DQT/DTMF/2-tone/MSK)The audio signal and signaling data (QT, DQT, DTMF, 2-tone and MSK) are separated by IC404. Next IC404 decode the signalingdata.

2.4.9 Bluetooth/GPS Circuit (GPS model only)The main component of the Bluetooth/GPS circuit is Bluetooth/GPS IC (IC5) on Module unit.The clocks of Bluetooth/GPS IC require 19.2MHz for core and 32.768 kHz slow clock (X1 and X2) for UART.Bluetooth/GPS IC communicates to the MPU/DSP (IC404) on the HCI UART. Interface of UART & Digital audio (PCM) between theMPU/DSP (IC404) and the Bluetooth/GPS IC (IC5), have level conversion at the level conversion IC (IC6 and IC7) on Module unit.The Bluetooth/GPS IC is powered by 1.8V and 3.3V which are supplied from 2 discrete external regulators (IC2 and IC3) on Moduleunit.

Fig.5 Bluetooth/GPS Circuit

X1 X2

TX-RX unit

IC404

MPU/DSP

UART

PCM

Module unit

PCM

UART

IC6

IC7

Level Conversion

IC

Conversion IC

Level UART

PCM

IC5

BT/GPS

IC

BPF

BPF

Bluetooth

antenna

GPS

antenna

connector

CN532.768kHz

Clock

TCXO 19.2MHz

Page 22: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-22 (No.RA054<Rev.001>)

2.4.9.1 Bluetooth CircuitTX/RX frequency is 2400-2483.5MHz (79ch Hopping, 2402-2480MHz, 1MHz step). Transmitting power is +2dBm at Bluetoothantenna input.Using the printed antenna with Bluetooth, and connected to the Bluetooth/GPS IC (IC5) through the saw filter (L11).Frequency configuration for Bluetooth is following:There are two LO modes: 2X and Offset LO (OSLO). 2X where LO is 2*RF_FREQ (e.g. when transmitting at 2441MHz it is at4882MHz). OSLO where LO is at (2/3)*RF_FREQ (e.g. when transmitting at 2441MHz it is at 1627.333MHz). In RX the 2X is always used. In GFSK TX if power is >10dBm then OSLO is usedIn EDR2 TX if power is >-12dBm then OSLO is usedIn EDR3 TX if power is >-12dBm then OSLO is usedOtherwise 2X is used for TX as well.

2.4.9.2 GPS CircuitThe GPS RF signal is received with the active antenna, and connected to the Bluetooth/GPS IC (IC5) through the terminal (CN5) andsaw filter (L9).The output is passed to pin L2 of the GPS IC. The input match for pin L2 comprises of C38, C36 and L7. The control and data linesfor the GPS IC are GPS_PA_EN, BTFM_nSHUTDOWN, GPS_TX and GPS_RX. GPS_TX and GPS_RX are shared with Bluetoothdata line. Frequency configuration for GPS is following:Lo is GPS: 1571.324MHz

Fig.6 GPS Circuit

BPF

GPS

antenna

TCXO

19.2MHz

MPU/DSP

IC404

1.8V

3.3V

GPS_LNA_IN(L2)

TCXO_CLK_LV(F1)

BT_HCI_UART_TX(A4)

BT_HCI_UART_RX(B5)

RTC_CLK(H9)OSCILLATOR

32.768kHz

BTFM_nSHUTDOWN(A6)

GPS_PA_EN(G3)

VBAT1(A2)

Level

Conversion

TCXO_LDO_IN(H1)

VDDS

GPS TX

GPS_RX

BT

antenna

BT_RF

BT/GPS IC

Antenna

connector

BPF

GPS ANT ALM

GPS ANT PWRGPS

Antenna

Detect3.3V

33GPS

33BT

18BT

Page 23: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-23

2.5 COMPONENTS DESCRIPTION

2.5.1 TX-RX unit (XC1-182K-00,XC1-183K-XX)

Ref. No. Part Name Use / Function

IC1 IC Voltage regulator (90C)

IC12 IC DC/DC converter (18M)

IC13 IC Voltage regulator (31BU)

IC14 IC DC/DC converter (200C)

IC15 IC Voltage regulator (12BU)

IC16 IC Voltage regulator (50CT)

IC17 IC Voltage regulator (32A)

IC18 IC Ignition

IC19 IC Voltage regulator (32C)

IC20 IC Voltage regulator (32M)

IC21 IC Load Switch (18M_3 )

IC22 IC Power management

IC23 IC Voltage regulator (50C)

IC24 IC DC/DC converter (12M)

IC25 IC DC/DC converter (54M)

IC26 IC Voltage regulator (50A)

IC101 IC DC amplifier (CV/Assist)

IC202 IC MMIC (Pre-drive)

IC203 IC DC amplifier (APC)

IC205 IC RF power control

IC301 IC Attenuation

IC302 IC Transceiver IC

IC401 IC Flash memory

IC402 IC SDRAM

IC403 IC Logic control

IC404 IC MPU/DSP

IC405,406 IC Analog switch

IC407,408 IC Logic control

IC409 IC I/O expander

IC410 IC A/D converter

IC411,412 IC D/A converter

IC413 IC Ignition

IC414 IC DC amplifier (VREF/25VREF)

IC602,603 IC Logic control

IC604 IC I/O expander

IC605 IC RS232C Driver

IC606 IC Logic control

IC607 IC Codec

IC608 IC Audio amplifier

IC609 IC Voltage regulator (50AC)

Q11 Transistor DC switch (OVRB)

Q12 FET DC switch (SB1)

Q13,14 Transistor DC switch

Q15,16 Transistor Voltage regulator (50BU)

Q17 FET DC switch (SB2)

Q18 Transistor DC switch

Q19 FET DC switch

Q20 FET DC switch (90T)

Q21 Transistor DC switch

Q22 FET DC switch (90ANT)

Q23 Transistor DC switch

Q25 Transistor DC switch (SBC)

Q101 Transistor Tripler

Q102 Transistor Tripler

Q103 FET DC switch

Q104 Transistor Ripple filter

Q105 FET VCO oscillation

Q106,107 Transistor VCO Buffer amplifier

Q201 FET TX Drive amplifier

Q202 Transistor DC switch

Q204-206 Transistor DC switch

Q301 FET DC switch

Q401 Transistor TCXO Buffer amplifier

Q402-404 FET DC switch

Q601 FET Level conversion

Q602 Transistor DC switch

Q603 FET Horn alert switch

Q604 Transistor Audio mute

Q605 FET Audio mute

Q606 FET DC switch

D1 Zener diode Reverse protection

D13 Zener diode Voltage regulator (50BU)

D14,15 Diode Reverse current prevention

D16,17 Diode DC/DC converter

D18,19 Diode Reverse current prevention

D20 Zener diode Over voltage protection

D21 Diode Reverse current prevention

D22 Zener diode Over voltage protection

D24 Diode Backup battery charge

D26,27 Diode Reverse current prevention

D101 Zener diode Over voltage protection

D102 Variablecapacitance diode

VCO frequency control

D103-106 Variablecapacitance diode

VCO assist tune

D107 Zener diode Speed up

D108 Variablecapacitance diode

TX modulation

D201 Zener diode Over voltage protection

D202 Diode RF switch

D204 Diode TX Reverse power detection

Ref. No. Part Name Use / Function

Page 24: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-24 (No.RA054<Rev.001>)

2.5.2 SUB unit (XC3-050M-00)

2.5.3 Module(BT/GPS) unit (XC2-0040-10)

2.6 TERMINAL FUNCTION

2.6.1 TX-RX unit (XC1-182K-00,XC1-183K-XX)

D205-209 Diode Antenna switch

D301-304 Diode Excessive input protection

D401 Diode Reverse current prevention

D402-406 Diode Line protection

D407 Zener diode Over voltage protection

D408-410 Diode Reverse current prevention

D601 Zener diode Over voltage protection

D602 Diode Reverse current prevention

D603-608 Zener diode Line protection

D609,610 Diode Line protection

D611 Zener diode Over voltage protection

D612,613 Diode Line protection

D614,615 Diode Reverse current prevention

D616,617 Diode Surge protection

D618 Diode Over voltage protection

D619 Diode Reverse current prevention

Ref. No. Part Name Use / Function

IC1 IC Voltage regulator (50M)

IC3,4 IC Level conversion

IC5 IC Bus switch

IC6 IC I/O expander

Q1 FET DC switch

Q2 FET DC switch (KEY Illumination)

Q3,4,6 Transistor DC switch (TX/BUSY)

Q8 FET DC switch (LCD backlight)

D1,2 Diode Surge protection

D3-6 LED KEY Illumination

D9,10 LED LCD backlight

D11,12 LED KEY Illumination

D15,16 LED LCD backlight

D17,18 LED KEY Illumination

D20 LED TX/BUSY LED

D21 Zener diode Over voltage protection

D22 Diode Reverse current protection

D24 Zener diode Over voltage protection

D26 Zener diode Over voltage protection

D27 Diode Over current protection

D28 Zener diode Over voltage protection

D30 Zener diode Over voltage protection

D32 Zener diode Over voltage protection

D33,34 LED KEY Illumination

Ref. No. Part Name Use / Function

Ref. No. Part Name Use / Function

IC1 IC Level conversion

IC2 IC Voltage regulator (18BT)

IC3 IC Voltage regulator (33BT)

IC4 IC Voltage regulator (33GPS)

IC5 IC GPS/Bluetooth

IC6,7 IC Level conversion

Q1 FET DC switch

D17,18 Diode Over voltage protection

Pin No. Name I/O Function

CN1

1 GND - Ground

2 GND - Ground

3 GND - Ground

4 NC - No connection

5 SP+ O Speaker output

6 SP+ O Speaker output

7 SP+ O Speaker output

8 NC - No connection

9 GND - Ground

10 GND - Ground

11 GND - Ground

12 GND - Ground

13 IGN - Ignition sense input

14 SB1 O Switched power supply

15 SB1 O Switched power supply

16 SB1 O Switched power supply

17 SB1 O Switched power supply

18 NC - No connection

19 54M O 5.4V output

20 NC - No connection

21 32M O 3.2V output

22 NC - No connection

23 18M O 1.8V output

24 NC - No connection

25 GND - Ground

26 USB_D+ I/O USB0 PHY data plus

27 GND - Ground

28 USB_D- I/O USB0 PHY data minus

29 GND - Ground

30 NC - No connection

31 MIC/VBUS I MIC signal input / USB VBUS Detection

Page 25: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-25

2.6.2 Module (BT/GPS) unit (XC2-0040-10)

2.6.3 Sub unit (XC3-050M-00)

32 ME - MIC ground

33 /PTT I PTT input

34 DM I/O MIC data detection

35 /PSW I Detection signal input of power switch

36 TXD O Serial data output

37 RXD I Serial data input

38 GND - Ground

39 I2CDT I/O I2C serial data

40 I2CCK O I2C serial clock

41 /KEYINT I Key state change signal

42 P_TEMP I Temperature detection signal

43 /CS O LCD driver chip-serect signal

44 LCDRST O LCD driver reset signal

45 /RD O LCD driver RD signal

46 D[7] O LCD driver data output

47 D[6] O LCD driver data output

48 D[5] O LCD driver data output

49 D[4] O LCD driver data output

50 D[3] O LCD driver data output

51 D[2] O LCD driver data output

52 D[1] O LCD driver data output

53 D[0] O LCD driver data output

54 /WR O LCD driver WR signal

55 A23 O LCD driver data/command switch signal

56 GND - Ground

57 R_SET2 I Radio setting signal 2

58 R_SET1 I Radio setting signal 1

59 R_SET0 I Radio setting signal 0

60 GND - Ground

CN2

1 GPS_PWR I Antenna power supply detection

2 GPS_ALM I Antenna open/short detection

3 GND - Ground

4 GND - Ground

5 GPS_ANT_SW O Enable signal for 33GPS

6 GPS_PA_EN O GPS receiver part switching signal output

7 /BT_SHUTDOWN O Shutdown signal output

8 WCLK O Audio serial data bus word clock output

9 BCLK O Audio serial data bus bit clock output

10 BT_AUD_DI I Audio signal input

11 BT_AUD_DO O Audio signal output

12 RTS2 O Serial data output

Pin No. Name I/O Function

13 CTS2 I Serial data input

14 G_RXD2 I Serial data input

15 G_TXD2 O Serial data output

16 BT_SW O Enable signal for 33BT and 18BT

17 GPSBT_DET I BT/GPS unit detection

18 GND - Ground

19 54M O 5.4V output

20 54M O 5.4V output

Pin No. Name I/O Function

CN1

1 54M I 5.4V input

2 54M I 5.4V input

3 GND - Ground

4 GPSBT_DET O BT/GPS unit detection (Ground)

5 BT_SW I Enable signal for 33BT and 18BT

6 G_TXD2 I Serial data intput

7 G_RXD2 O Serial data output

8 CTS2 O Serial data output

9 RTS2 I Serial data input

10 BT_AUD_DO I Audio signal input

11 BT_AUD_DI O Audio signal output

12 BCLK I Audio serial data bus bit clock input

13 WCLK I Audio serial data bus word clock input

14 /BT_SHUTDOWN I Shutdown signal input

15 GPS_PA_EN I GPS receiver part switching signal input

16 GPS_ANT_SW I Enable signal for 33GPS

17 GND - Ground

18 GND - Ground

19 GPS_ALM O Antenna open/short detection

20 GPS_PWR O Antenna power supply detection

Pin No. Name I/O Function

J1

1 DM I/O MIC data detection

2 HOOK/RXD/D- I/O Hook detection / Serial data input / USB PHY data minus

3 MIC/VBUS I MIC signal input

4 ME - MIC ground

5 PTT/TXD I/O PTT input / Serial data output

6 GND - Ground

7 SB O Switched power supply

Pin No. Name I/O Function

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1-26 (No.RA054<Rev.001>)

8 BLC/D+ I/O Back light control signal / USB PHY data plus

CN3

1 GND - Ground

2 S8 I Switch 8

3 S9 I Switch 9

4 S10 I Switch 10

5 S7 I Switch 7

6 S6 I Switch 6

7 S5 I Switch 5

8 S4 I Switch 4

9 S1 I Switch 1

10 S2 I Switch 2

11 S3 I Switch 3

12 /PSW I Detection signal input of power switch

CN6

1 ESD - Ground

2 A0 O LCD driver data/command switch signal

3 /WR O LCD driver WR signal

4 D0 O LCD driver data output

5 D1 O LCD driver data output

6 D2 O LCD driver data output

7 D3 O LCD driver data output

8 D4 O LCD driver data output

9 D5 O LCD driver data output

10 D6 O LCD driver data output

11 D7 O LCD driver data output

12 /RD O LCD driver RD signal

13 RSTB O LCD driver reset signal

14 CSB O LCD driver chip-serect signal

15 VDDI O 1.8V output

16 VD1 - LCD Driver Internal power supply

17 VSS - Ground

18 VDD O 3.2V output

19 VM - VM is the non-select voltage level of COM-drivers

20 V0 - V0 is the LCD driving voltage for common circuits at positive frame

21 XV0 - XV0 is the LCD driving voltage for common circuits at negative frame

22 VG - VG is the LCD driving voltage for segment circuits

23 ESD - Ground

CN5

1 SP+ O Speaker output

2 SPG - Speaker ground

Pin No. Name I/O Function

CN7

1 GND - Ground

2 R_SET0 O Radio setting signal 0

3 R_SET1 O Radio setting signal 1

4 R_SET2 O Radio setting signal 2

5 GND - Ground

6 A23 I LCD driver data/command switch signal

7 /WR I LCD driver WR signal

8 D[0] I LCD driver data input

9 D[1] I LCD driver data input

10 D[2] I LCD driver data input

11 D[3] I LCD driver data input

12 D[4] I LCD driver data input

13 D[5] I LCD driver data input

14 D[6] I LCD driver data input

15 D[7] I LCD driver data input

16 /RD I LCD driver RD signal

17 LCDRST I LCD driver reset signal

18 /CS I LCD driver chip-serect signal

19 P_TEMP O Temperature detection signal

20 /KEYINT O Key state change signal

21 I2CCK I I2C serial clock

22 I2CDT I/O I2C serial data

23 GND - Ground

24 RXD O Serial data output

25 TXD I Serial data input

26 /PSW O Detection signal input of power switch

27 DM I/O MIC data detection

28 /PTT O PTT input

29 ME - MIC ground

30 MIC/VBUS O MIC signal input / USB VBUS Detection

31 NC - No connection

32 GND - Ground

33 USB_D- I/O USB0 PHY data minus

34 GND - Ground

35 USB_D+ I/O USB0 PHY data plus

36 GND - Ground

37 NC - No connection

38 18M I 1.8V input

39 NC - No connection

40 32M I 3.2V input

41 NC - No connection

42 54M I 5.4V input

43 NC - No connection

Pin No. Name I/O Function

Page 27: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-27

2.6.4 D-Sub 15-pin Connector Specification

44 SB1 O Switched power supply

45 SB1 O Switched power supply

46 SB1 O Switched power supply

47 SB1 O Switched power supply

48 NC - No connection

49 GND - Ground

50 GND - Ground

51 GND - Ground

52 GND - Ground

53 NC - No connection

54 SP+ I Speaker input

55 SP+ I Speaker input

56 SP+ I Speaker input

57 NC - No connection

58 GND - Ground

59 GND - Ground

60 GND - Ground

Pin No. Name I/O Function

Pin No. Pin Name I/O Modification

SignalType

DescriptionRating and Condition

Parameter Min Typ Max Unit

1 SB O No Power Switched B Output Voltage This parameter depends on Battery Voltage

Supply Current - - 2.0 A

2 IGN I No Digital Active High Input Voltage Range 0 - 30 V

Threshold High 6.0 - - V

Threshold Low - 5.0 - V

3 SP2/PA O No Analog Speaker output Audio Output 3 4 - W

Coupling Capacitor - 330 - uF

RL 3.0 - - ohm

Allowable Frequency 300.0 - 3000 Hz

4 DETO O Yes Analog FM detector output Output Level - 0.24 - Vp-p

Coupling Capacitor - 10 - uF

Allowable Load - 600 - ohm

Output Impedance - 100 - ohm

AFO O RX Audio output Output Level - 0.6 - Vp-p

Coupling Capacitor - 10 - uF

Allowable Load - 600 - ohm

Output Impedance - 100 - ohm

Allowable Frequency 300 - 3000 Hz

5 DATAI I Yes Analog External Modulation input Input Voltage Range - 0.5 - Vp-p

Input Impedance - 45 - kohm

MI2 I Analog External MIC AF Input Input Voltage Range - 5.0 - mVrms

Allowable Frequency 300 - 3000 Hz

Input Impedance - 600 - ohm

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1-28 (No.RA054<Rev.001>)

6 FNC1COM1_TXD

I/O Yes Digital Programmable I/O VIH 4.0 - 5.2 V

VIL -0.5 - 1.0 V

VOH(Io=-1.5mA) 4.0 - 5.2 V

VOL(Io=1.5mA) - - 1.1 V

TXD(RS-232C)

O Digital RS-232C Serial port(TXD)

Voltage Swing ±5 ±5.2 V

Baud Rate - 300k bps

7 FNC2COM1_RXD

I/O Yes Digital Programmable I/O VIH 4.0 - 5.2 V

VIL -0.5 - 1.0 V

VOH(Io=-1.5mA) 4.0 - 5.2 V

VOL(Io=1.5mA) - - 1.1 V

RXD(RS-232C)

I Digital RS-232C Serial port(RXD)

Input Voltage Range -30.0 - 30.00 V

Threshold Low 0.51 1.326 - V

Threshold High - 1.632 2.448 V

Baud Rate - - 300k bps

CL - 100 - pF

8 FNC3 I/O Yes Digital Programmable I/O VIH 4.0 - 5.2 V

VIL -0.5 - 1.0 V

VOH(Io=-1.5mA) 4.0 - 5.2 V

VOL(Io=1.5mA) - - 1.1 V

RTS(RS232C) O Digital RS-232C Serial port (RTS) Voltage Swing ±5 ±5.2 - V

9 FNC4 I/O Yes Digital Programmable I/O VIH 4.0 - 5.2 V

VIL -0.5 - 1.0 V

VOH(Io=-1.5mA) 4.0 - 5.2 V

VOL(Io=1.5mA) - - 1.1 V

CTS(RS232C)

I Digital RS-232C Serial port(CTS)

Input Voltage Range -30.0 30.00 V

Threshold Low 0.5 1.3 V

Threshold High 1.75 2.6 V

10 FNC5 I/O No Digital Programmable I/O VIH 4.0 - 5.2 V

VIL -0.5 - 1.0 V

VOH(Io=-1.5mA) 4.0 - 5.2 V

VOL(Io=1.5mA) - - 1.1 V

11 FNC6 I/O No Digital Programmable I/O VIH 4.0 - 5.2 V

VIL -0.5 - 1.0 V

VOH(Io=-1.5mA) 4.0 - 5.2 V

VOL(Io=1.5mA) - - 1.1 V

12 50AC O No Power 5V DC Power supply Output Voltage 4.5 5 5.25 V

Output Current - - 100.0 mA

13 HR1 I Yes Analog Horn alert signal input Input Voltage 5 - 16 V

Input Current - - 2.0 A

COM2_TXD O Digital TXD VOH(Io=-1.5mA) 4.0 - 5.2 V

VOL(Io=1.5mA) -0.5 - 1.0 V

Pin No. Pin Name I/O Modification

SignalType

DescriptionRating and Condition

Parameter Min Typ Max Unit

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(No.RA054<Rev.001>)1-29

14 HR2 O Yes Analog Horn alert signal output Output Voltage This parameter depends on HR1 Voltage

Output Voltage Loss - - 1.0 V

Output Current - - 2.0 A

COM2_RXD I Digital RXD VIH 2.8 - 5.2 V

VIL -0.5 - 0.5 V

15 GND - No GND Ground - - - -

Pin No. Pin Name I/O Modification

SignalType

DescriptionRating and Condition

Parameter Min Typ Max Unit

Page 30: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-30 (No.RA054<Rev.001>)

SECTION 3DISASSEMBLY

3.1 Disassembly Procedure

(1) Remove the cabinet, top packing and shielding plate of thetransceiver.

(2) To remove the panel assembly, first turn the transceiverupside down.Then, insert a flat-head screwdriver into the holes of thechassis and tilt it in the direction as shown by the arrow.

(3) Disconnect the flat cable from connector of the panelassembly.

(4) Remove the speaker lead from the holder hook.<1>Remove the speaker connector from the display unitconnector.<2>Insert a flat-head screwdriver at the stamp position (arrowmark) in the speaker holder.<3>

Tilt the screwdriver in the figure direction <4>, then removethe speaker holder from the front panel.

Cabinet

Holes

Panel assembly

Flat cable

<1>Holder hook<1>Holder hook

<2>Speaker connector<2>Speaker connector

<3><3><3>

Speaker holderSpeaker holder

<4><4>

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(No.RA054<Rev.001>)1-31

(5) When removing the TX-RX PCB, then remove the solder ofthe antenna hot pin and positive terminal of the DC cord.Remove the 15 screws from the TX-RX PCB, powermodule,and audio amp.

(6) Pull it out behind the chassis by rotating the bush <c> of theDC cord 90 degrees in the direction of the arrow after thescrew <a> in the negative terminal is removed, and thepositive terminal <b> is removed from the chassis.

3.2 Precautions for Reassembly

(1) Push the upper tabs of speaker holder (stamped mark <1>side) into the front panel first.Then push the lower tabs (stamped mark <2> side) into thefront panel.

(2) When mounting the panel assembly, pass the flat cablethrough the hole of the chassis as shown below thenconnect the flat cable to connector of the panel assembly.

(3) Fit the panel assembly into the two tabs of the chassis topside first.Then, fit the panel assembly into the two tabs of the chassisbottom side by turning the panel assembly.

of the DC cord

Antenna hot pin

TX-RX PCB

Power module

Audio amp

Positive terminal

DC cord

a

ccb

There are stamped marks <1> or <2> on

the four corners of the speaker holder.

<2>

<1>

<2>

<1>

Panel assembly

Panelassembly

Chassis

Chassis

Hole of the chassis

Page 32: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-32 (No.RA054<Rev.001>)

3.3 Precautions for Reassembly

3.3.1 Assembly Information (Sheet/Cushion)When “Main Parts” is changed (ordered), “Assembled Sheet / Cushion” should also be changed (ordered) together.The Sticker and Sheet etc are non-reusable parts. It requires the new one to get the radio’s performance after repairs.

Main Parts Assembled Sheet/ Cushion

Part Name Part Number Part Name Part Number

CHASSIS A1A-0096-00 NAME PLATE B72-2283-04

CAUTION STICKER B41-1837-04

SHEET G11-4578-04

TX-RX UNIT (NX-3720H K)TX-RX UNIT (NX-3720 E)TX-RX UNIT (NX-3820H K)TX-RX UNIT (NX-3820H K2) TX-RX UNIT (NX-3820 E)

XCA-033K-00XCA-033E-01XCA-034K-00XCA-034K-01XCA-034E-01

SHEET G11-4611-04

SHIELDING COVER F1B-0086-00

MODULE UNIT XC2-0040-10 SHIELDING COVER F10-3225-05

ILL.GUIDE B1B-0101-00 OPTI.DIFFUSER B1B-0102-00

MOUNTING J2B-0341-00 FLEX P.BOARD J8C-0018-00

PANEL ASSY A6C-0067-00 KENWOOD BADGE B4D-0044-00

CAUTION STICKER B4B-0008-00

SHIELDING CASE F10-3112-13 CONDUCTIVE CUSHION G13-2101-14

SUB UNIT XC3-050M-00 REF.SHEET B1B-0103-00

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(No.RA054<Rev.001>)1-33

SECTION 4ADJUSTMENT

4.1 NX-3720H(G)/3720HK TYPE Controls

4.1.1 Preparations for checking/tuning the transceiverBefore attempting to check/tune the transceiver, connect the unitto a suitable power supply.Whenever the transmitter is turned on, the unit must beconnected to a suitable dummy load (i.e. power meter).The speaker output connector must be terminated with an 4ohmdummy load and connected to an AC voltmeter and an audiodistortion meter or a SINAD measurement meter at all timesduring checking/tuning.

4.2 Panel Test Mode

4.2.1 Test mode operation featuresThis transceiver has a test mode. To enter test mode, press andhold the [ ] button while turning the transceiver power ON orpress the [ ] button and select the "Panel Test". Before thetransceiver enters test mode, the frequency version informationappears on the LCD momentarily. Test mode can be inhibited byprogramming. To exit test mode, turn the transceiver power OFF.The following functions are available in test mode.

• When the panel test mode is activated, the last used channeland signaling numbers are displayed. When the panel testmode is activated for the first time, the channel and signalingnumbers are 1.

4.2.2 Button operation

*1: When the mode is selected as Analog, this function isenabled.

Power switch

Channel Up/Down buttonVolume Up/Down button

MIC jack

KMC-36 (OPTION)

Keypad

[PTT]

Button "Func" not appears on the sub LCD display

Function Display

[+] Push: Volume upHold: Volume up continuously

-

[-] Push: Volume downHold: Volume down continuously

-

[] Push: Test channel upHold: Test channel up continuously

Channel No.

[] Push: Test channel downHold: Test channel down continuously

Channel No.

[] Push: Squelch level up *1Hold: Squelch off

Squelch levelSquelch off: icon appears

[] Wide/Narrow/Very Narrow

Wide : "w"Narrow: "n"Very Narrow: "v"

[ ] Shift to panel tuning mode

-

[ ] Function on "Func" appears on the sub LCD display

[ ] Push: Test signaling upHold: Test signaling up continuously

Signaling No.

[ (AUX)] MSK 1200bps and 2400bps *1

2400bps: [ ] icon appears

[PTT] Transmit -

[0] to [9]and[#], [ ]

- -

Button "Func" appears on the sub LCD display

Function Display

[+] Function off -

[-] Function off -

[] - -

[] Mode selectionAnalog/NXDN/DMR

Analog: "A"NXDN: "N"DMR: "D"

[] Function off -

[] Button/LCD check The contents of the pressed button etc., appear.

[ ] High power/Medium power/Low power

High:[ ] icon appearsMedium:[ ] icon appearsLow:[ ] icon appears

[ ] Function off -

Page 34: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-34 (No.RA054<Rev.001>)

• LED indicatorRed LED Lights during transmission.Green LED Lights when there is carrier.

• Sub LCD indicator"Func" Appears at function on.

• LCD display in panel test mode

4.2.3 Frequency and SignalingThe transceiver has been adjusted for the frequencies shown inthe following table. When required, readjust them following theadjustment procedure to obtain the frequencies you want inactual operation.

(1) Test frequency

(2) SignalingAnalog Type Signaling

[ ] External Speaker on/off

On: icon appears

[ (AUX)] Compander on/off On: [ ] icon appears

[PTT] Transmit -

[0] to [9]and[#], [ ]

Function off -

Button "Func" appears on the sub LCD display

Function Display

(Power ON)

Type Frequency range

136~174MHz

(After 2sec.)

Temperature [oC]Power

An : Analog narrow mode

Aw : Analog wide 5k mode

Nn : NXDN narrow mode

Nv : NXDN very narrow mode

D : DMR mode

Squelch level

(Analog mode only)

Sub LCD display

Main LCD display Signaling

No.

Channel No.

CH RX (MHz) TX (MHz)

1 155.05000 155.10000

2 136.05000 136.10000

3 173.95000 173.90000

4 155.00000 155.00000

5 155.20000 155.20000

6 155.40000 155.40000

7~16 - -

No. RX TX

1 None None

2 None Square Wave

3 LTR Data LTR Data

4 QT:67.0Hz QT:67.0Hz

5 QT:151.4Hz QT:151.4Hz

6 QT:210.7Hz QT:210.7Hz

7 QT:254.1Hz QT:254.1Hz

8 DQT:D023N DQT:D023N

9 DQT:D754I DQT:D754I

10 DTMF Decode (CODE: 159D)

DTMF Encode (CODE: 159D)

11 None DTMF Encode (CODE: 9)

12 2-tone Decode (A: 304.7Hz, B: 3106.0Hz)

2-tone Encode (A: 304.7Hz,B: 3106.0Hz)

13 Single Tone Decode (979.9Hz)

Single Tone Encode (979.9Hz)

14 None Single Tone Encode (1000Hz)

15 None MSK PN9

16 MSK Decode MSK Encode

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(No.RA054<Rev.001>)1-35

NXDN Type Signaling

RAN: Radio Access NumberPN9: Pseudo-Random PatternNo.7, 9 Item: PC test mode only

DMR Type Signaling

4.3 Panel Tuning Mode4.3.1 Transceiver tuning (To enter tuning mode)To enter tuning mode, press the [ ] button while the transceiveris in test mode. Use the [ (AUX)] button to write tuning datathrough tuning modes, and the [ ]/[ ] button to adjust tuningrequirements (1 to 4096 appears on the LCD).Use the [ ] button to select the adjustment item through tuningmodes. Use the [ ] button to adjust 5 or 9 reference leveladjustments, and use the [ ] button to switch between Wide/Narrow.

• LCD display in panel tuning mode

4.3.2 Button operation

4.3.3 5 or 9 reference level adjustments frequencyMaximum Transmit Power, High Transmit Power, MediumTransmit Power, Low Transmit Power, Balance, MaximumDeviation, NXDN High Deviation, DMR High Deviation, QTDeviation, DQT Deviation, LTR Deviation, DTMF Deviation,Single Tone Deviation, MSK Deviation, CW ID Deviation, IQPhase, RSSI Reference, Squelch Open, Squelch Tight, LowRSSI, High RSSI

No. RX TX

1 RAN1 RAN1

2 None PN9

3 RAN1 Maximum Deviation Pattern

7 FSW + PN9 FSW + PN9

9 Tone Pattern (1031Hz) Tone Pattern (1031Hz)

No. RX TX

1 CC 00 Burst CC 00 Burst

2 PN9 PN9

3 CC 00 Burst Maximum Deviation Pattern

4 CC 00 Burst 1/3 Deviation Pattern

5 CC 00 Burst 0 Continuous Pattern

6 SYNC (Each Slot) +PN9 Burst Pattern

SYNC (Each Slot) + PN9Burst Pattern

7 SYNC (Super Frame) +PN9 Burst Pattern

SYNC (Super Frame) +PN9 Burst Pattern

8 CC 00 Burst 0 Burst Pattern

9 Tone Pattern Tone Test Burst Pattern

10 Silence Pattern Silence Burst Pattern

11 Audio Test Pattern Audio Test Burst Pattern

12 Vocoder Loop None

An AST 2562.6

CV voltage, AD value, etc

Sub LCDdisplay

L1

Adjustment point

Main LCDdisplay Adjustment value

(1~4096)

Proper value guide(When the frequency adjustment is necessary,

or is displayed.)

Adjustment item

An : Analog narrow modeAw : Analog wide 5k modeAs : Analog wide 4k mode *1Nn : NXDN narrow modeNv : NXDN very narrow modeD : DMR mode

L1L2L3

C1C2C3

H1H2H3

*1: Wide 4k is displayed only when the PC test mode is used. However, it aims at production for factory, or a operation verification of the transceiver. It is not necessary in operation of the transceiver to adjust.

Button Function

Push Hold (1 second)

[+] Volume up Continuation up

[-] Volume down Continuation down

[ ] Adjustment value up Continuation up

[ ] Adjustment value down Continuation down

[ ] Auto adjustment start Output tone pattern change of balance adjustment (A change is possible only during balance adjustment.)

[ ] Wide/Narrow/NXDN/DMR

-

[ ] Shift to panel test mode -

[ ] To enter 5 or 9 reference level adjustments

-

[ ] Go to next adjustment item

Back to last adjustment item (At the time of 5 or 9 point adjustment: Adjustment point change)

[ (AUX)] Writes the adjustmentvalue

-

[PTT](MIC)

Transmit

[0] to [9]and[#],[ ](MIC)

-

Tuning point Display RX (MHz) TX (MHz)

1 L1 136.05000 136.10000

2 L3 145.55000 145.60000

3 C2 155.05000 155.10000

4 H1 164.55000 164.60000

5 H3 173.95000 173.90000

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1-36 (No.RA054<Rev.001>)

VCO Assist

4.3.4 Adjustment item supplement

Tuning point Display RX (MHz) TX (MHz)

1 L1 136.05000 136.10000

2 L2 140.80000 140.85000

3 L3 145.55000 145.60000

4 C1 150.30000 150.35000

5 C2 155.05000 155.10000

6 C3 159.80000 159.85000

7 H1 164.55000 164.60000

8 H2 169.30000 169.35000

9 H3 173.95000 173.90000

Adjustment Item Description

LCD Contrast The contrast of LCD display can be changed.

VCO Assist The lock voltage of VCO is adjusted.This item must be adjusted before receiver and transmitter adjustment items.

Frequency Frequency is adjusted under receivingcondition with SSG.The SSG needs 0.001ppm accuracy soplease use a standard oscillator if necessary.This item can be adjusted only in PC TestMode so that the adjustment value is notchanged easily.

RTC Correction Real Time Clock is adjusted.This item uses the internal clock.(Any measurement equipment is not required.)

Maximum Transmit Power

Maximum Transmit Power is adjusted.

High Transmit Power

High Transmit Power is adjusted.

Mid Transmit Power

Medium Transmit Power is adjusted.

Low Transmit Power

Low Transmit Power is adjusted.

Ramp Offset Adjust this item to the optimal Ramp voltage.

Balance The transmit modulation frequency response is adjusted.This item is adjusted so that the deviationof 2kHz becomes the same deviation of 20Hz.This item must be adjusted before all adjustment items for deviations are adjusted.

Maximum Deviation(Analog Wide 5k/Wide 4k/Narrow)

Maximum Deviation of Analog (Wide 5k/Wide 4k/Narrow) is adjusted.This item must be adjusted before all adjustment items for tone deviations are adjusted.

High Deviation NXDN/DMR high deviation is adjusted.

QT Deviation QT deviation is adjusted.

DQT Deviation DQT deviation is adjusted.

LTR Deviation LTR deviation is adjusted.

DTMF Deviation DTMF deviation is adjusted.

Single Tone Deviation

The deviation of Single Tone used in “2-tone” and “5-tone” is adjusted.

MSK Deviation MSK deviation is adjusted.

CW ID Deviation CWID tone deviation is adjusted.CWID is used to inform the others who istransmitting on a 6.25-kHz spacing channel.(In FCC rule, Analog mode or CWID isrequired for each channel-spacing.)

IQ Phase Correction of phase difference shift between I and Q.

RSSI Reference The minimum RSSI level for scan stop isadjusted.

Squelch Open The squelch level at level “1” is adjusted.

Squelch Tight The squelch level at level “9” is adjusted.

Low RSSI RSSI display level “ ” is adjusted.Both “Low RSSI” and “High RSSI” must beadjusted. (The curve data of RSSI level isapplied.)

High RSSI

Adjustment Item Description

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(No.RA054<Rev.001>)1-37

4.3.5 Adjustment item and Display

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide)

AS *2(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

1 LCD Contrast CNTR - 1 point ADJ CommonSection 21~256

2 VCO Assist AST (CV voltage) - - 9 - - - CommonSection 31~4096

3 RTC Correction RTC - - CommonSection 5-2.00 ~ -0.01 ,0.00 ,+0.01 ~ +2.00

4 Maximum Transmit Power

MAX_P - - - 5 - - - TransmitterSection 11~256

5 High Transmit Power

H_PWR - - - 5 - - - TransmitterSection 21~1024

6 Medium Transmit Power

M_PWR - - - 5 - - - TransmitterSection 31~1024

7 Low Transmit Power

L_PWR - - - 5 - - - TransmitterSection 41~1024

8 Ramp Offset RAMP (ADC measurement value)

1 point ADJ TransmitterSection 51~1024

9 Balance BAL (Encode frequency) - - 5 - - - TransmitterSection 61~1024

10 Maximum Deviation

ADEV - 5 5 *2 5 - - - TransmitterSection 71~1024

11 NXDN High Deviation

NDEV - - - - 5 5 - TransmitterSection 81~1024

12 DMR High Deviation

DDEV - - - - - - 5 TransmitterSection 91~1024

13 QT Deviation QT - 5 5 *2 5 - - - TransmitterSection 101~1024

14 DQT Deviation DQT - 5 5 *2 5 - - - TransmitterSection 111~1024

15 LTR Deviation LTR - 5 5 *2 5 - - - TransmitterSection 121~1024

16 DTMF Deviation DTMF - 5 5 *2 5 - - - TransmitterSection 131~1024

17 Single Tone Deviation

TONE - 5 5 *2 5 - - - TransmitterSection 141~1024

18 MSK Deviation MSK - 5 5 *2 5 - - - TransmitterSection 151~1024

19 CW ID Deviation CWID - - - 5 - - - TransmitterSection 161~1024

20 IQ Phase IQ (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 21~63

21 RSSI Reference 1 DSP (Receive)

RSSI1 (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

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1-38 (No.RA054<Rev.001>)

*2: Wide 4k can be set up only when the PC test mode is used.

22 RSSI Reference 2 RF IC(Receive)

RSSI2 (RSSI RF IC(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

23 RSSI Reference 3 DSP (Standby)

RSSI3 (RSSI DSP (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

24 RSSI Reference 4 RF IC (Standby)

RSSI4 (RSSI RF IC (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

25 Squelch Open SQL (ASQDET measurement value)

5 5 *2 5 5 5 5 ReceiveSection 41~256

26 Squelch Tight SQLT (ASQDET measurement value)

5 5 *2 5 - - - ReceiveSection 51~256

27 Low RSSI LRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 61~256

28 High RSSI HRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 71~256

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide)

AS *2(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

Page 39: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-39

4.3.6 Panel tuning mode flow chartNote:

* In this Panel tuning mode flow chart, the Adjustment item name is modified.

SQL An SQL Aw SQL Nn

Squelch (Open) Narrow Squelch (Open) Wide Squelch (Open) Narrow

Max PowerMAX_P

Panel Test Mode

[ ]hold

LCD Contrast

CNTR

levelecnerefer9VCO Assist

stnemtsujdAAST

RTC Correction

RTC

Ramp Offset

RAMP

High Power Narrow 5 reference level

H_PWR An Adjustments

Medium Power Narrow 5 reference level

M_PWR An Adjustments

Low Power Narrow 5 reference level

L_PWR An Adjustments

Balance Narrow 5 reference level

BAL An Adjustments

Analog Max Deviation Narrow Analog Max Deviation Wide

ADEV An ADEV Aw

5 reference level

Adjustments

5 reference level

Adjustments

5 reference level

Adjustments

NXDN High Deviation Narrow NXDN High Deviation VeryNarrow

NDEV Nn NDEV Nv

QT Deviation Narrow QT Deviation Wide

wATQnATQ

5 reference level

Adjustments

DQT Deviation Narrow DQT Deviation Wide

DQT An DQT Aw

5 reference level

Adjustments

LTR Deviation Narrow LTR Deviation Wide

wARTLnARTL

5 reference level

Adjustments

DTMF Deviation Narrow DTMF Deviation Wide

DTMF An DTMF Aw

5 reference level

Adjustments

MSK Deviation Narrow MSK Deviation Wide

MSK An MSK Aw

5 reference level

Adjustments

CW ID Deviation Narrow

CWID An

Squelch (Open) DMR

5 reference level

Adjustments

RSSI (Low) Narrow

nAISSRL

RSSI (High) Narrow

nAISSRH

Adjustment Item N/W/VN

LCD Display

For all adjustment items, press the [ ] button

to write the adjustment value.

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ] [ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ] [ ]

[ ] [ ] [ ] [ ] [ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

5 reference level

Adjustments

Narrow

An

[ ]

5 reference level

Adjustments

[ ]

RSSI Referance 1

RSSI1[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]IQ Phase

IQ[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 2

RSSI2[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 3

RSSI3[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 4

RSSI4[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]

[ ]

[ ]

[ ]

Single Tone Deviation Narrow Single Tone Deviation Wide

TONE An TONE Aw

5 reference level

Adjustments

[ ] [ ][ ]press [ ]hold

[ ]

[ ]

[ ]

[ ]

DMR High Deviation

DDEV

[ ]press [ ]hold

[ ]

[ ] [ ] [ ]

Adjustment Point

LCD Display

5 reference level

L1

L3

C2

H3

H1

Low 1

Adjustments

Low 3

Center 2

High 3

5 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]High 1 [ ]

[ ]

[ ]

High Transmit Power

Maximum Transmit Power

Medium Transmit Power

Low Transmit Power

Maximum Deviation

NXDN High Deviation

DMR High DeviationQT Deviation

DQT Deviation

LTR Deviation

DTMF Deviation

Single Tone Deviation

MSK Deviation

CW ID Deviation

IQ Phase

RSSI Reference 1

RSSI Reference 2

RSSI Reference 3

RSSI Reference 4

Open Squelch

Low RSSI

High RSSI

Tight Squelch

Adjustment Point

LCD Display

9 reference level

L1

L2

L3

H3

C1

C2

C3

H1

H2

Low 1

Adjustments

Low 2

Low 3

High 3

9 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]Center 1 [ ]

[ ]

Center 2

Center 3

[ ]

[ ][ ]

[ ]High 1 [ ]

[ ]

High 2 [ ]

[ ]

[ ]

Balance

VCO Assist

VeryNarrow

Squelch (Tight) Narrow Squelch (Tight) Wide

wATLQSnATLQS

5 reference level

Adjustments

[ ] [ ][ ]press [ ]hold

[ ] [ ]

TLSn

5 reference level

Adjustments

[ ] [ ][ ]press [ ]hold

[ ] [ ]

[ ]press [ ]hold

DMR

D

Squelch (Open)

Nv D

[ ]

5 reference level

Adjustments

[ ]

5 reference level

Adjustments

[ ]

Page 40: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-40 (No.RA054<Rev.001>)

4.4 Adjustment point

TX-RX UNIT (XC1-182)Component Side

4.5 Test Equipment Required for Alignment

*The test equipment which is not used for adjustment is contained in this table.

RTC (CN55)

RT

C

Test Equipment Major Specifications

1. Standard Signal Generator (SSG)

Frequency RangeModulation Output

100 to 900MHzFrequency modulation and external modulation-127dBm/0.1uV to greater than -20dBm/22.4mV

When performing the Frequency adjustment, the following accuracy is necessary.• 0.003ppmUse a standard oscillator for adjustments, if necessary.

2. Power Meter Input ImpedanceOperation FrequencyMeasurement Capability

50ohm100 to 900MHzVicinity of 100W

3. Deviation Meter Frequency Range 100 to 900MHz

4. Digital Volt Meter (DVM)

Measuring RangeInput Impedance

10mV to 20V DCHigh input impedance for minimum circuit loading

5. Oscilloscope DC through 30MHz

6. Frequency Counter Frequency RangeFrequency Stability

10Hz to 1000MHz0.2ppm or less

To measure the oscillating frequency of the internal clock 32766.00Hz~32770.00Hz forRTC Correction Resolution 0.01Hz is better for accuracy adjustment.

7. Ammeter 20A or more

8. AF Volt Meter (AF VM) Frequency RangeVoltage Range

50Hz to 10kHz1mV to 10V

9. Audio Generator (AG) Frequency RangeOutput

50Hz to 5kHz or more0 to 1V

10. Distortion Meter CapabilityInput Level

3% or less at 1kHz50mV to 10Vrms

11. Spectrum Analyzer Measuring Range DC to 1GHz or more

12. 4ohm Dummy Load Approx. 4ohm, 10W

13. Regulated Power Supply 13.6V, approx. 20A (adjustable from 9V to 17V)Useful if ammeter equipped

Page 41: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-41

Test cable for microphone input (E30-3360-28) MIC connector (Front panel view)

Tuning cable (E30-7754-05)Adapter cable (E30-7754-05) is required for injecting an audioif PC tuning is used.See “PC Mode” section for the connection.

4.6 Radio check Section

3

2

4

5

6

7

8

3

1

2

4

5

6

7

8

1GREEN

RED

BLACK

BLUE

SHIELD

WHITE

GRAY

YELLOW

PTT

E

MIC-E

MIC

HK

1 : BLC

2 : +B

3 : GND

4 : PTT/TXD (PC serial data from radio)

5 : MICE

6 : MIC

7 : HOOK/RXD (PC serial data to radio)

8 : DM

1

8

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Frequency check

1)CH-Sig: 1-1PTT: ON

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

f. counter Panel ANT Check an internal temperature of radio from 20°C to 33°C.

±0.25ppm±[email protected]

2. High power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 45W~55W13.0A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Page 42: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-42 (No.RA054<Rev.001>)

3.Mediumpowercheck

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 25W~35W10A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

4. Low power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 3.5W~6.5W7.0A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

5. MIC sensitivity check

1)CH-Sig: 1-1AG: 1kHzPTT: ON

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1AG: 1kHzPTT: Press [Transmit] button.

DeviationmeterOscilloscopeAGAF VM

Panel ANTMIC jack

Adjust AGinput to get astandardMOD.

5mV ±1mV

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 43: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-43

4.7 Common Section

6. Sensitivitycheck

1)CH-Sig: 1-1SSG outputWide: -117dBm(0.32μV)(MOD: 1kHz/±3kHz)Narrow: -117dBm(0.32μV)(MOD: 1kHz/±1.5kHz)

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1SSG outputWide: -117dBm (0.32μV)(MOD: 1kHz/±3kHz)Narrow: -117dBm (0.32μV)(MOD: 1kHz/±1.5kHz)

SSGAF VMOscilloscopeDistortionmeter4ohmDummy load

Panel ANTExt. SPconnector

Check 12dB SINAD or more

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Setting

1) DC voltage:13.6V2) SSG standard modulation

[Wide] MOD:1kHz,DEV:3kHz[Narrow] MOD:1kHz,DEV:1.5kHz

2.LCD Contrast

1) Adj item[CNTR]Adjust:[****]

Press [ ] button to store the adjustment value.

1) Adj item[LCD Contrast]Data: [****]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.

280 (Reference value)

3. VCO Assist

1) Adj item:[AST]Adjust:[****]2) Adj item:[L1]→[L2]→[L3]→[C1]→[C2]→[C3]→[H1]→[H2]→[H3]→

Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [VCO Assist]2) Adj item:[Low1],[Low2], [Low3], [Center1], [Center2], [Center3], [High1],[High2][High3]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment][V] Indicator on the PC window shows VCO lock voltage. Change the adjustment value to get VCO lock voltage within the limit of the specified voltage.

Note:Confirm the VCO lock voltage approximately 3 seconds after the adjustment value is changed.

2.5V±0.1V[Automatic Adjustment]After the automatic adjustment is performed, verify that the VCO lock voltage is within the voltage range which is specified by the manual adjustment.[Manual Adjustment]Press [Apply] button to store the adjustment value after all adjustment points have been adjusted.Adjustment value range: 300 - 3000

Page 44: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-44 (No.RA054<Rev.001>)

4.8 Transmitter Section

4. Frequency

*The Frequency adjustment can be performed only in PC test mode.

1) Adj item: [Frequency]SSG output: -20dBm (22.4mV) (CW (without modulation))

Caution:Perform the frequency adjustment under the following conditions.

• Temperature range of +20°C to +33°C (+68.0°F to +91.4°F).(The temperature is displayed on the Frequency adjustment screen of the KPG-D3/D3N and the LCD of the transceiver.)

• Use an accuracy of 0.003ppm for the SSG. (Use a standard oscillator if necessary.)

SSG Panel ANT [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode]Press [Start] button of “Auto Tuning”. Press [Apply] button to store the adjustment value after the automatic adjustment has finished.

[PC test mode]“IF20” value = Within 0±10 digits. The value of “IF20” will become around “0” after the adjustment has finished.

Remark:“Frequency” is adjusted under receiving condition with SSG.

5. RTC Correciton

1) Adj item:[RTC]Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [RTC Correction]Data: [****]Press [Apply] button to store the adjustment value.

Frequency Counter

TX-RX

TESTPOINT(CN55)

Remark:The adjustment value should input the display of a Frequency Counter.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1.MaximumTransmitPower

1) Adj item:[MAX_P]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maximum Transmit Power]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

57.5W ±2.5W15A or less

Page 45: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-45

2. High Transmit power

1) Adj item:[H_PWR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [High Transmit Power]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

50W ±1W 13A or less

3. Medium Transmit power

1) Adj item:[M_PWR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Medium Transmit Power]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

30W ±1W 10A or less

4. Low Transmit power

1) Adj item:[L_PWR]

Adjust:[****]2) Adj item:

[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Low Transmit Power]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

5W ±0.5W 7A or less

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 46: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-46 (No.RA054<Rev.001>)

5.Ramp Offset

1)Adj item:[RAMP]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Ramp Offset]Press [Autotune(TX Starts)] button. Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune(TX

starts)] button.2) Press [Apply] button

to store the adjustment value after the automatic adjustment has finished.

3) Check Ramp Offset Monitor Value Over 60.

[Manual Adjustment]1) Set the adjustment

value to "1".2) Press [Transmit]

button and increase the adjustment value slowly while monitoring the offset monitor value.

3) Set the adjustment value when the offset monitor value exceed "75".

6. Balance

1) Adj item: [An BAL]Adjust:[****]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Balance]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

The Deviation of 20Hz frequency is fixed.Change the 2kHz adjustment value to become the same deviation of 20Hz within the specified range.[Panel tuning mode]PTT:ONWhile PTT:ON, press the [] button to change the 20Hz/2kHz.[PC test mode]PTT: Press [Transmit] button.While PTT:ON, click the check box "2kHz Sine Wave" to change the 20Hz/2kHz.

2kHz Tone deviation is within ± 1.0% of 20Hz tone deviation.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 47: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-47

7. Maximum Deviation

[Analog Wide]

1) Adj item: [Aw ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the deviation is between 4150Hz and 4250Hz.Deviation meterLPF: 15kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

4150~4250Hz

[Analog Narrow]

1) Adj item: [An ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the deviation is between 2050Hz and 2150Hz. Deviation meterLPF: 15kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2050~2150Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 48: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-48 (No.RA054<Rev.001>)

8. NXDN High Deviation[NXDN Narrow]

1) Adj item: [Nn NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the Analog deviation is between 2995Hz and 3117Hz.Deviation meterLPF: 3kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2995~3117Hz

[NXDN Very Narrow]

1) Adj item: [Nv NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Very Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the Analog deviation is between 1311Hz and 1363Hz.Deviation meterLPF: 3kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

1311~1363Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 49: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-49

9. DMR High Deviation

1) Adj item: [D DDEV]Adjust: [****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DMR High Deviation (DMR Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the Analog deviation is between 2695Hz and 2803Hz.Deviation meterLPF: 3kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2695~2803Hz

10. QT Deviation

[Analog Wide]

1) Adj item: [Aw QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Wide)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.75kHz±0.05kHz

[Analog Narrow]

1) Adj item: [An QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.35kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 50: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-50 (No.RA054<Rev.001>)

11. DQT Deviation

[Analog Wide]

1) Adj item: [Aw DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Wide)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.430 (Reference value)

0.75kHz±0.05kHz

[Analog Narrow]

1) Adj item: [An DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.430 (Reference value)

0.35kHz±0.05kHz

12. LTR Deviation

[Analog Wide]

1) Adj item: [Aw LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Wide)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.00kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 51: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-51

[Analog Narrow]

1) Adj item: [An LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.75kHz±0.05kHz

13. DTMF Deviation

[Analog Wide]

1) Adj item: [Aw DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.555 (Reference value)

2.50kHz±0.05kHz

[Analog Narrow]

1) Adj item: [An DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.555 (Reference value)

1.25kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-52 (No.RA054<Rev.001>)

14. Single Tone Deviation

[Analog Wide]

1) Adj item: [Aw TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

3.00kHz±0.05kHz

[Analog Narrow]

1) Adj item: [An TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.50kHz±0.05kHz

15. MSK Deviation

[Analog Wide]

1) Adj item: [Aw MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

3.00kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-53

[Analog Narrow]

1) Adj item: [An MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.50kHz±0.05kHz

16. CWID Deviation

[Analog Narrow]

1) Adj item: [An CWID]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [CWID Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.10kHz±0.10kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-54 (No.RA054<Rev.001>)

4.8.1 Necessary Deviation adjustment item for each signaling and modeThe following shows the necessary adjustment items for each signaling deviation. Please read the following table like the followingexample. In the case of the signaling "QT (Analog Wide)", this signaling is composed of three elements [Balance, Maximum Deviation(Analog Wide) and QT Deviation (Analog Wide)]. Please adjust Balance and Maximum Deviation (Analog Wide) before adjusting QTDeviation (Analog Wide).

• Balance is common with all the above deviation adjustments. If Balance (Transmitter Section 6) has already adjusted, please skipStep1 and adjust from Step2.

• Maximum Deviation (Analog Wide/Narrow) is common with all the analog signaling deviations and CWID Deviation (NXDN VeryNarrow).If Balance and Maximum Deviation (Analog Wide /Narrow) (Transmitter Section 7) have already adjusted, please skip Step2 andadjust from Step3.

Mode Signaling Necessary adjustment and order

Wide Narrow Very Narrow

Analog Audio 1. Balance adjust2. Maximum Deviation

[Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]

-

QT 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. QT Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. QT Deviation [Analog Narrow]

-

DQT 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. DQT Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DQT Deviation

[Analog Narrow]

-

LTR 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. LTR Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. LTR Deviation [Analog Narrow]

-

DTMF 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. DTMF Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DTMF Deviation [Analog Narrow]

-

2TONE 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. Single Tone Deviation [Analog

Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. Single Tone Deviation

[Analog Narrow]

-

MSK(Fleetsync)

1. Balance adjust2. Maximum Deviation

[Analog Wide]3. MSK Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. MSK Deviation

[Analog Narrow]

-

NXDN Audio - 1. Balance adjust2. NXDN High Deviation

[NXDN Narrow]

1. Balance adjust2. NXDN High Deviation

[NXDN Very Narrow]

CWID - - 1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. CWID Deviation

[Analog Narrow]

DMR Audio - 1. Balance adjust2. DMR High Deviation

-

Page 55: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-55

4.9 Receiver Section

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. AF level setting

[Panel test mode]1) CH-Sig: 1-1

SSG output: -47dBm (1mV)(MOD: 1kHz/±1.5kHz)

1) Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1SSG output: -47dBm (1mV) (MOD:1kHz/±1.5kHz)

SSGDVMAF VMDummy load

Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Volume Up/Down knob to obtain 1.41V AF output.(0.5W @ 4ohm load)

1.41V±0.1V

2. IQ Phase

1) Adj item: [An IQ]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

1) Adj item: [IQ Phase]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]After input signal from SSG,1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment]Adjust RSSI Level(DSP Normal Power Mode)Value to the minimum.

3. RSSI reference [DSP (Receive)]

1) Adj item: [An RSSI 1]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 1 DSP (Receive)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Receive)]

1) Adj item: [An RSSI 2]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 2 RF IC (Receive)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

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1-56 (No.RA054<Rev.001>)

[DSP (Standby)]

1) Adj item: [An RSSI 3]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 3 DSP (Standby)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Standby)]

1) Adj item: [An RSSI 4]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 4 RF IC (Standby)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

4. Squelch Open

[Analog Wide]

1) Adj item: [Aw SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Open (Analog Wide)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 57: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-57

[Analog Narrow]

1) Adj item: [An SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Open (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[NXDN Narrow]

1) Adj item: [Nn SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[NXDN Very Narrow]

1) Adj item: [Nv SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Very Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-58 (No.RA054<Rev.001>)

[DMR] 1) Adj item: [D SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

1) Adj item: [Squelch Open (DMR)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

5. Squelch Tight

[Analog Wide]

1) Adj item: [Aw SQLT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Tight (Analog Wide)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[Analog Narrow]

1) Adj item: [An SQLT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Tight (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-59

6. Low RSSI

1) Adj item: [An LRSSI]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [Low RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

7. High RSSI

1) Adj item: [An HRSSI]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [High RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-60 (No.RA054<Rev.001>)

4.10 NX-3720(G)/3720E TYPE Controls

4.10.1 Preparations for checking/tuning the transceiverBefore attempting to check/tune the transceiver, connect the unitto a suitable power supply.Whenever the transmitter is turned on, the unit must beconnected to a suitable dummy load (i.e. power meter).The speaker output connector must be terminated with an 4ohmdummy load and connected to an AC voltmeter and an audiodistortion meter or a SINAD measurement meter at all timesduring checking/tuning.

4.11 Panel Test Mode

4.11.1 Test mode operation featuresThis transceiver has a test mode. To enter test mode, press andhold the [ ] button while turning the transceiver power ON orpress the [ ] button and select the "Panel Test". Before thetransceiver enters test mode, the frequency version informationappears on the LCD momentarily. Test mode can be inhibited byprogramming. To exit test mode, turn the transceiver power OFF.The following functions are available in test mode.

• When the panel test mode is activated, the last used channeland signaling numbers are displayed. When the panel testmode is activated for the first time, the channel and signalingnumbers are 1.

4.11.2 Button operation

*1: When the mode is selected as Analog, this function isenabled.

Power switch

Channel Up/Down buttonVolume Up/Down button

MIC jack

KMC-36 (OPTION)

Keypad

[PTT]

Button "Func" not appears on the sub LCD display

Function Display

[+] Push: Volume upHold: Volume up continuously

-

[-] Push: Volume downHold: Volume down continuously

-

[] Push: Test channel upHold: Test channel up continuously

Channel No.

[] Push: Test channel downHold: Test channel down continuously

Channel No.

[] Push: Squelch level up *1Hold: Squelch off

Squelch levelSquelch off: icon appears

[] Wide 5k/Wide 4k/Narrow/Very Narrow

Wide 5k: "w"Wide 4k: "s"Narrow: "n"Very Narrow: "v"

[ ] Shift to panel tuning mode

-

[ ] Function on "Func" appears on the sub LCD display

[ ] Push: Test signaling upHold: Test signaling up continuously

Signaling No.

[ (AUX)] MSK 1200bps and 2400bps *1

2400bps: [ ] icon appears

[PTT] Transmit -

[0] to [9]and[#], [ ]

- -

Button "Func" appears on the sub LCD display

Function Display

[+] Function off -

[-] Function off -

[] - -

[] Mode selectionAnalog/NXDN/DMR

Analog: "A"NXDN: "N"DMR: "D"

[] Function off -

[] Button/LCD check The contents of the pressed button etc.,appear.

[ ] High power/Medium power/Low power

High:[ ] icon appearsMedium:[ ] icon appearsLow:[ ] icon appears

[ ] Function off -

[ ] External Speaker on/off On: icon appears

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(No.RA054<Rev.001>)1-61

• LED indicatorRed LED Lights during transmission.Green LED Lights when there is carrier.

• Sub LCD indicator"Func" Appears at function on.

• LCD display in panel test mode

4.11.3 Frequency and SignalingThe transceiver has been adjusted for the frequencies shown inthe following table. When required, readjust them following theadjustment procedure to obtain the frequencies you want inactual operation.

(1) Test frequency

(2) SignalingAnalog Type Signaling

[ (AUX)] Compander on/off On: [ ] icon appears

[PTT] Transmit -

[0] to [9]and[#], [ ]

Function off -

Button "Func" appears on the sub LCD display

Function Display

(Power ON)

Type Frequency range

136~174MHz

(After 2sec.)

Temperature [oC]Power

An : Analog narrow mode

Aw : Analog wide 5k mode

As : Analog wide 4k mode

Nn : NXDN narrow mode

Nv : NXDN very narrow mode

D : DMR mode

Squelch level

(Analog mode only)

Sub LCD display

Main LCD display Signaling

No.

Channel No.

CH RX (MHz) TX (MHz)

1 155.05000 155.10000

2 136.05000 136.10000

3 173.95000 173.90000

4 155.00000 155.00000

5 155.20000 155.20000

6 155.40000 155.40000

7~16 - -

No. RX TX

1 None None

2 None Square Wave

3 LTR Data LTR Data

4 QT:67.0Hz QT:67.0Hz

5 QT:151.4Hz QT:151.4Hz

6 QT:210.7Hz QT:210.7Hz

7 QT:254.1Hz QT:254.1Hz

8 DQT:D023N DQT:D023N

9 DQT:D754I DQT:D754I

10 DTMF Decode (CODE: 159D)

DTMF Encode (CODE: 159D)

11 None DTMF Encode (CODE: 9)

12 2-tone Decode (A: 304.7Hz, B: 3106.0Hz)

2-tone Encode (A: 304.7Hz,B: 3106.0Hz)

13 Single Tone Decode (979.9Hz)

Single Tone Encode (979.9Hz)

14 None Single Tone Encode (1000Hz)

15 None MSK PN9

16 MSK Decode MSK Encode

Page 62: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-62 (No.RA054<Rev.001>)

NXDN Type Signaling

RAN: Radio Access NumberPN9: Pseudo-Random PatternNo.7, 9 Item: PC test mode only

DMR Type Signaling

4.12 Panel Tuning Mode

4.12.1 Transceiver tuning (To enter tuning mode)To enter tuning mode, press the [ ] button while the transceiveris in test mode. Use the [ (AUX)] button to write tuning datathrough tuning modes, and the [ ]/[ ] button to adjust tuningrequirements (1 to 4096 appears on the LCD).Use the [ ] button to select the adjustment item through tuningmodes. Use the [ ] button to adjust 5 or 9 reference leveladjustments, and use the [ ] button to switch between Wide5k/Wide4k/Narrow.

• LCD display in panel tuning mode

4.12.2 Button operation

4.12.3 5 or 9 reference level adjustments frequencyMaximum Transmit Power, High Transmit Power, MediumTransmit Power, Low Transmit Power, Balance, MaximumDeviation , NXDN High Deviation, DMR High Deviation, QTDeviation, DQT Deviation, LTR Deviation, DTMF Deviation,Single Tone Deviation, MSK Deviation, CW ID Deviation, IQPhase, RSSI Reference, Squelch Open, Squelch Tight, LowRSSI, High RSSI

No. RX TX

1 RAN1 RAN1

2 None PN9

3 RAN1 Maximum Deviation Pattern

7 FSW + PN9 FSW + PN9

9 Tone Pattern (1031Hz) Tone Pattern (1031Hz)

No. RX TX

1 CC 00 Burst CC 00 Burst

2 PN9 PN9

3 CC 00 Burst Maximum Deviation Pattern

4 CC 00 Burst 1/3 Deviation Pattern

5 CC 00 Burst 0 Continuous Pattern

6 SYNC (Each Slot) +PN9 Burst Pattern

SYNC (Each Slot) + PN9Burst Pattern

7 SYNC (Super Frame) +PN9 Burst Pattern

SYNC (Super Frame) +PN9 Burst Pattern

8 CC 00 Burst 0 Burst Pattern

9 Tone Pattern Tone Test Burst Pattern

10 Silence Pattern Silence Burst Pattern

11 Audio Test Pattern Audio Test Burst Pattern

12 Vocoder Loop None

An AST 2562.6

CV voltage, AD value, etc

Sub LCDdisplay

L1

Adjustment point

Main LCDdisplay Adjustment value

(1~4096)

Proper value guide(When the frequency adjustment is necessary,

or is displayed.)

Adjustment item

An : Analog narrow modeAw : Analog wide 5k modeAs : Analog wide 4k modeNn : NXDN narrow modeNv : NXDN very narrow modeD : DMR mode

L1L2L3

C1C2C3

H1H2H3

Button Function

Push Hold (1 second)

[+] Volume up Continuation up

[-] Volume down Continuation down

[ ] Adjustment value up Continuation up

[ ] Adjustment value down Continuation down

[ ] Auto adjustment start Output tone pattern change of balance adjustment (A change is possible only during balance adjustment.)

[ ] Wide 5k/Wide 4k/Narrow/NXDN/DMR

-

[ ] Shift to panel test mode -

[ ] To enter 5 or 9 reference level adjustments

-

[ ] Go to next adjustment item

Back to last adjustment item (At the time of 5 or 9 point adjustment: Adjustment point change)

[ (AUX)] Writes the adjustmentvalue

-

[PTT](MIC)

Transmit

[0] to [9]and[#],[ ](MIC)

-

Tuning point Display RX (MHz) TX (MHz)

1 L1 136.05000 136.10000

2 L3 145.55000 145.60000

3 C2 155.05000 155.10000

4 H1 164.55000 164.60000

5 H3 173.95000 173.90000

Page 63: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-63

VCO Assist

4.12.4 Adjustment item supplement

Tuning point Display RX (MHz) TX (MHz)

1 L1 136.05000 136.10000

2 L2 140.80000 140.85000

3 L3 145.55000 145.60000

4 C1 150.30000 150.35000

5 C2 155.05000 155.10000

6 C3 159.80000 159.85000

7 H1 164.55000 164.60000

8 H2 169.30000 169.35000

9 H3 173.95000 173.90000

Adjustment Item Description

LCD Contrast The contrast of LCD display can be changed.

VCO Assist The lock voltage of VCO is adjusted.This item must be adjusted before receiver and transmitter adjustment items.

Frequency Frequency is adjusted under receivingcondition with SSG.The SSG needs 0.001ppm accuracy soplease use a standard oscillator if necessary.This item can be adjusted only in PC TestMode so that the adjustment value is notchanged easily.

RTC Correction Real Time Clock is adjusted.This item uses the internal clock.(Any measurement equipment is not required.)

Maximum Transmit Power

Maximum Transmit Power is adjusted.

High Transmit Power

High Transmit Power is adjusted.

Mid Transmit Power

Medium Transmit Power is adjusted.

Low Transmit Power

Low Transmit Power is adjusted.

Ramp Offset Adjust this item to the optimal Ramp voltage.

Balance The transmit modulation frequency response is adjusted.This item is adjusted so that the deviationof 2kHz becomes the same deviation of 20Hz.This item must be adjusted before all adjustment items for deviations are adjusted.

Maximum Deviation(Analog Wide 5k/Wide 4k/Narrow)

Maximum Deviation of Analog (Wide 5k/Wide 4k/Narrow) is adjusted.This item must be adjusted before all adjustment items for tone deviations are adjusted.

High Deviation NXDN/DMR high deviation is adjusted.

QT Deviation QT deviation is adjusted.

DQT Deviation DQT deviation is adjusted.

LTR Deviation LTR deviation is adjusted.

DTMF Deviation DTMF deviation is adjusted.

Single Tone Deviation

The deviation of Single Tone used in “2-tone” and “5-tone” is adjusted.

MSK Deviation MSK deviation is adjusted.

CW ID Deviation CWID tone deviation is adjusted.CWID is used to inform the others who istransmitting on a 6.25-kHz spacing channel.(In FCC rule, Analog mode or CWID isrequired for each channel-spacing.)

IQ Phase Correction of phase difference shift between I and Q.

RSSI Reference The minimum RSSI level for scan stop isadjusted.

Squelch Open The squelch level at level “1” is adjusted.

Squelch Tight The squelch level at level “9” is adjusted.

Low RSSI RSSI display level “ ” is adjusted.Both “Low RSSI” and “High RSSI” must beadjusted. (The curve data of RSSI level isapplied.)

High RSSI

Adjustment Item Description

Page 64: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-64 (No.RA054<Rev.001>)

4.12.5 Adjustment item and Display

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide 5k)

AS(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

1 LCD Contrast CNTR - 1 point ADJ CommonSection 21~256

2 VCO Assist AST (CV voltage) - - 9 - - - CommonSection 31~4096

3 RTC Correction RTC - - CommonSection 5-2.00 ~ -0.01 ,0.00 ,+0.01 ~ +2.00

4 Maximum Transmit Power

MAX_P - - - 5 - - - TransmitterSection 11~256

5 High Transmit Power

H_PWR - - - 5 - - - TransmitterSection 21~1024

6 Medium Transmit Power

M_PWR - - - 5 - - - TransmitterSection 31~1024

7 Low Transmit Power

L_PWR - - - 5 - - - TransmitterSection 41~1024

8 Ramp Offset RAMP (ADC measurement value)

1 point ADJ TransmitterSection 51~1024

9 Balance BAL (Encode frequency) - - 5 - - - TransmitterSection 61~1024

10 Maximum Deviation

ADEV - 5 5 5 - - - TransmitterSection 71~1024

11 NXDN High Deviation

NDEV - - - - 5 5 - TransmitterSection 81~1024

12 DMR High Deviation

DDEV - - - - - - 5 TransmitterSection 91~1024

13 QT Deviation QT - 5 5 5 - - - TransmitterSection 101~1024

14 DQT Deviation DQT - 5 5 5 - - - TransmitterSection 111~1024

15 LTR Deviation LTR - 5 5 5 - - - TransmitterSection 121~1024

16 DTMF Deviation DTMF - 5 5 5 - - - TransmitterSection 131~1024

17 Single Tone Deviation

TONE - 5 5 5 - - - TransmitterSection 141~1024

18 MSK Deviation MSK - 5 5 5 - - - TransmitterSection 151~1024

19 CW ID Deviation CWID - - - 5 - - - TransmitterSection 161~1024

20 IQ Phase IQ (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 21~63

21 RSSI Reference 1 DSP (Receive)

RSSI1 (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

Page 65: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-65

22 RSSI Reference 2 RF IC(Receive)

RSSI2 (RSSI RF IC(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

23 RSSI Reference 3 DSP (Standby)

RSSI3 (RSSI DSP (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

24 RSSI Reference 4 RF IC (Standby)

RSSI4 (RSSI RF IC (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

25 Squelch Open SQL (ASQDET measurement value)

5 5 5 5 5 5 ReceiveSection 41~256

26 Squelch Tight SQLT (ASQDET measurement value)

5 5 5 - - - ReceiveSection 51~256

27 Low RSSI LRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 61~256

28 High RSSI HRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 71~256

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide 5k)

AS(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

Page 66: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-66 (No.RA054<Rev.001>)

4.12.6 Panel tuning mode flow chartNote:

* In this Panel tuning mode flow chart, the Adjustment item name is modified.Panel Test Mode

[ ]hold

LCD Contrast

CNTR

levelecnerefer9VCO Assist

stnemtsujdAAST

RTC Correction

RTC

Ramp Offset

RAMP

High Power Narrow 5 reference level

H_PWR An Adjustments

Medium Power Narrow 5 reference level

M_PWR An Adjustments

Low Power Narrow 5 reference level

L_PWR An Adjustments

Balance Narrow 5 reference level

BAL An Adjustments

5 reference level

Adjustments

5 reference level

Adjustments

NXDN High Deviation Narrow NXDN High Deviation VeryNarrow

NDEV Nn NDEV Nv

CW ID Deviation Narrow

CWID An

RSSI (Low) Narrow

nAISSRL

RSSI (High) Narrow

nAISSRH

Adjustment Item N/W/VN

LCD Display

For all adjustment items, press the [ ] button

to write the adjustment value.

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ] [ ]

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

5 reference level

Adjustments

[ ]

RSSI Referance 1

RSSI1[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]IQ Phase

IQ[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 2

RSSI2[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 3

RSSI3[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 4

RSSI4

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]

DMR High Deviation

DDEV

[ ]press [ ]hold

Adjustment Point

LCD Display

5 reference level

L1

L3

C2

H3

H1

Low 1

Adjustments

Low 3

Center 2

High 3

5 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]High 1 [ ]

[ ]

[ ]

High Transmit Power

Medium Transmit Power

Low Transmit Power

Maximum Deviation

NXDN High Deviation

DMR High DeviationQT Deviation

DQT Deviation

LTR Deviation

DTMF Deviation

Single Tone Deviation

MSK Deviation

CW ID Deviation

IQ Phase

RSSI Reference 1

RSSI Reference 2

RSSI Reference 3

RSSI Reference 4

Open Squelch

Low RSSI

High RSSI

Tight Squelch

Adjustment Point

LCD Display

9 reference level

L1

L2

L3

H3

C1

C2

C3

H1

H2

Low 1

Adjustments

Low 2

Low 3

High 3

9 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]Center 1 [ ]

[ ]

Center 2

Center 3

[ ]

[ ][ ]

[ ]High 1 [ ]

[ ]

High 2 [ ]

[ ]

[ ]

Balance

VCO Assist

[ ]press [ ]hold

DMR

D

5 reference level

Adjustments

[ ]

5 reference level

Adjustments

[ ]

Maximum Transmit Power

5 reference level

Adjustments

Analog Max Deviation Narrow Analog Max Deviation Wide4k Analog Max Deviation Wide5k

ADEV An ADEV As ADEV Aw

[ ]

[ ] [ ] [ ]

[ ] [ ]

[ ]press [ ]hold

Single Tone Deviation Narrow Single Tone Deviation Wide4k

TONE An TONE Aw[ ] [ ][ ]press [ ]hold

[ ]

MSK Deviation Narrow MSK Deviation Wide4k MSK Deviation Wide5k

MSK An MSK As MSK Aw5 reference levelAdjustments

[ ]

[ ]

QT Deviation Narrow QT Deviation Wide4k

sATQnATQ

DQT Deviation Narrow DQT Deviation Wide4k

DQT An DQT As

LTR Deviation Narrow LTR Deviation Wide4k

sARTLnARTL

DTMF Deviation Narrow DTMF Deviation Wide4k

DTMF An DTMF As

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]5 reference level

[ ]

QT Deviation Wide5k

QT Aw

5 reference levelAdjustments

[ ]

5 reference levelAdjustments

DQT Deviation Wide5k

DQT Aw5 reference levelAdjustments

LTR Deviation Wide5k

LTR Aw

DTMF Deviation Wide5k

DTMF Aw

Adjustments

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]

[ ]

[ ]

[ ]

[ ]

5 reference level

[ ]Single Tone Deviation Wide5k

TONE Aw

Adjustments[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]press [ ]hold

[ ]

Squelch (Open) Narrow Squelch (Open) Wide4k Squelch (Open) Wide5k Squelch (Open)

SQL An SQL As SQL Aw SQL

[ ]

[ ] [ ] [ ] [ ] [ ]

[ ] [ ] [ ] [ ]

[ ]

5 reference level

Adjustments

VeryNarrow

NvNarrow

Nn

Squelch (Open)

DMR

D

Squelch (Open)[ ]press [ ]hold

[ ]Squelch (Tight) Narrow Squelch (Tight) Wide4k Squelch (Tight) Wide5k

wATLQSsATLQSnATLQS

5 reference level

Adjustments

[ ] [ ] [ ]

[ ] [ ]

[ ]press [ ]hold

Max PowerMAX_P

[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

Page 67: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-67

4.13 Adjustment points

TX-RX UNIT (XC1-182)Component Side

4.14 Test Equipment Required for Alignment

*The test equipment which is not used for adjustment is contained in this table.

RTC (CN55)

RT

C

Test Equipment Major Specifications

1. Standard Signal Generator (SSG)

Frequency RangeModulation Output

100 to 900MHzFrequency modulation and external modulation-127dBm/0.1uV to greater than -20dBm/22.4mV

When performing the Frequency adjustment, the following accuracy is necessary.• 0.003ppmUse a standard oscillator for adjustments, if necessary.

2. Power Meter Input ImpedanceOperation FrequencyMeasurement Capability

50ohm100 to 900MHzVicinity of 100W

3. Deviation Meter Frequency Range 100 to 900MHz

4. Digital Volt Meter (DVM)

Measuring RangeInput Impedance

10mV to 20V DCHigh input impedance for minimum circuit loading

5. Oscilloscope DC through 30MHz

6. Frequency Counter Frequency RangeFrequency Stability

10Hz to 1000MHz0.2ppm or less

To measure the oscillating frequency of the internal clock 32766.00Hz~32770.00Hz forRTC Correction Resolution 0.01Hz is better for accuracy adjustment.

7. Ammeter 20A or more

8. AF Volt Meter (AF VM) Frequency RangeVoltage Range

50Hz to 10kHz1mV to 10V

9. Audio Generator (AG) Frequency RangeOutput

50Hz to 5kHz or more0 to 1V

10. Distortion Meter CapabilityInput Level

3% or less at 1kHz50mV to 10Vrms

11. Spectrum Analyzer Measuring Range DC to 1GHz or more

12. 4ohm Dummy Load Approx. 4ohm, 10W

13. Regulated Power Supply 13.2V, approx. 20A (adjustable from 9V to 17V)Useful if ammeter equipped

Page 68: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-68 (No.RA054<Rev.001>)

Test cable for microphone input (E30-3360-28) MIC connector (Front panel view)

Tuning cable (E30-7754-05)Adapter cable (E30-7754-05) is required for injecting an audioif PC tuning is used.See “PC Mode” section for the connection.

4.15 Radio check Section

3

2

4

5

6

7

8

3

1

2

4

5

6

7

8

1GREEN

RED

BLACK

BLUE

SHIELD

WHITE

GRAY

YELLOW

PTT

E

MIC-E

MIC

HK

1 : BLC

2 : +B

3 : GND

4 : PTT/TXD (PC serial data from radio)

5 : MICE

6 : MIC

7 : HOOK/RXD (PC serial data to radio)

8 : DM

1

8

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Frequency check

1)CH-Sig: 1-1PTT: ON

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

f. counter Panel ANT Check an internal temperature of radio from 20°C to 33°C.

±0.25ppm±[email protected]

2. High power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 21W~29W10A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Page 69: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-69

3. Low power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 3.5W~6.5W7.0A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

4. MIC sensitivity check

1)CH-Sig: 1-1AG: 1kHzPTT: ON

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1AG: 1kHzPTT: Press [Transmit] button.

DeviationmeterOscilloscopeAGAF VM

Panel ANTMIC jack

Adjust AGinput to get astandardMOD.

5mV ±1mV

5. Sensitivitycheck

1)CH-Sig: 1-1SSG outputWide 5k: -117dBm(0.32μV)(MOD: 1kHz/±3kHz)Wide 4k:-117dBm (0.32μV)(MOD: 1kHz/±2.4kHz)Narrow: -117dBm (0.32μV)(MOD: 1kHz/±1.5kHz)

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1SSG outputWide 5k: -117dBm (0.32μV)(MOD: 1kHz/±3kHz)Wide 4k: -117dBm (0.32μV)(MOD: 1kHz/±2.4kHz)Narrow: -117dBm (0.32μV)(MOD: 1kHz/±1.5kHz)

SSGAF VMOscilloscopeDistortionmeter4ohmDummy load

Panel ANTExt. SPconnector

Check 12dB SINAD or more

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 70: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-70 (No.RA054<Rev.001>)

4.16 Common Section

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Setting

1) DC voltage:13.2V2) SSG standard modulation

[Wide 5k] MOD:1kHz,DEV:3kHz[Wide 4k] MOD:1kHz,DEV:2.4kHz[Narrow] MOD:1kHz,DEV:1.5kHz

2.LCD Contrast

1) Adj item[CNTR]Adjust:[****]

Press [ ] button to store the adjustment value.

1) Adj item[LCD Contrast]Data: [****]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.

280 (Reference value)

3. VCO Assist

1) Adj item:[AST]Adjust:[****]

2) Adj item:[L1]→[L2]→[L3]→[C1]→[C2]→[C3]→[H1]→[H2]→[H3]→

Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [VCO Assist]

2) Adj item:[Low1],[Low2], [Low3], [Center1], [Center2], [Center3], [High1],[High2][High3]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment][V] Indicator on the PC window shows VCO lock voltage. Change the adjustment value to get VCO lock voltage within the limit of the specified voltage.

Note:Confirm the VCO lock voltage approximately 3 seconds after the adjustment value is changed.

2.5V±0.1V[Automatic Adjustment]After the automatic adjustment is performed, verify that the VCO lock voltage is within the voltage range which is specified by the manual adjustment.[Manual Adjustment]Press [Apply] button to store the adjustment value after all adjustment points have been adjusted.Adjustment value range: 300 - 3000

Page 71: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-71

4. Frequency

*The Frequency adjustment can be performed only in PC test mode.

1) Adj item: [Frequency]SSG output: -20dBm (22.4mV) (CW (without modulation))

Caution:Perform the frequency adjustment under the following conditions.

• Temperature range of +20°C to +33°C (+68.0°F to +91.4°F).(The temperature is displayed on the Frequency adjustment screen of the KPG-D3/D3N and the LCD of the transceiver.)

• Use an accuracy of 0.003ppm for the SSG. (Use a standard oscillator if necessary.)

SSG Panel ANT [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode]Press [Start] button of “Auto Tuning”. Press [Apply] button to store the adjustment value after the automatic adjustment has finished.

[PC test mode]“IF20” value = Within 0±10 digits. The value of “IF20” will become around “0” after the adjustment has finished.

Remark:“Frequency” is adjusted under receiving condition with SSG.

5. RTC Correciton

1) Adj item:[RTC]Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [RTC Correction]Data: [****]Press [Apply] button to store the adjustment value.

Frequency Counter

TX-RX

TESTPOINT(CN55)

Remark:The adjustment value should input the display of a Frequency Counter.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 72: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-72 (No.RA054<Rev.001>)

4.17 Transmitter Section

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Maximum Transmit Power

1) Adj item:[MAX_P]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maximum Transmit Power]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

57.5W ±2.5W 15A or less

2. High Transmit power

1) Adj item:[H_PWR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust: [****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [High Transmit Power]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

25W ±1W10A or less

3. Low Transmit power

1) Adj item:[L_PWR]

Adjust:[****]2) Adj item:

[L1]→[L3]→[C2]→[H1]→[H3]Adjust: [****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Low Transmit Power]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

5W ±0.5W7A or less

Page 73: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-73

4.Ramp Offset

1)Adj item:[RAMP]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Ramp Offset]Press [Autotune(TX starts)] button. Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune(TX

starts)] button.2) Press [Apply] button

to store the adjustment value after the automatic adjustment has finished.

3) Check Ramp Offset Monitor Value Over 60.

[Manual Adjustment]1) Set the adjustment

value to "1".2) Press [Transmit]

button and increase the adjustment value slowly while monitoring the offset monitor value.

3) Set the adjustment value when the offset monitor value exceed "75".

5. Balance

1) Adj item: [An BAL]Adjust:[****]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Balance]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

The Deviation of 20Hz frequency is fixed.Change the 2kHz adjustment value to become the same deviation of 20Hz within the specified range.[Panel tuning mode]PTT:ONWhile PTT:ON, press the [] button to change the 20Hz/2kHz.[PC test mode]PTT: Press [Transmit] button.While PTT:ON, click the check box "2kHz Sine Wave" to change the 20Hz/2kHz.

2kHz Tone deviation is within ± 1.0% of 20Hz tone deviation.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 74: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-74 (No.RA054<Rev.001>)

6. Maximum Deviation

[Analog Wide 5k]

1) Adj item: [Aw ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the deviation is between 4150Hz and 4250Hz.Deviation meterLPF: 15kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

4150~4250Hz

[Analog Wide 4k]

1) Adj item: [As ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the deviation is between 3310Hz and 3410Hz.Deviation meterLPF: 15kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

3310~3410Hz

[Analog Narrow]

1) Adj item: [An ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the deviation is between 2050Hz and 2150Hz.Deviation meterLPF: 15kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2050~2150Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 75: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-75

7. NXDN High Deviation[NXDN Narrow]

1) Adj item: [Nn NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the Analog deviation is between 2995Hz and 3117Hz.Deviation meterLPF: 3kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2995~3117Hz

[NXDN Very Narrow]

1) Adj item: [Nv NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Very Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the Analog deviation is between 1311Hz and 1363Hz.Deviation meterLPF: 3kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

1311~1363Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 76: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-76 (No.RA054<Rev.001>)

8. DMR High Deviation

1) Adj item: [D DDEV]Adjust: [****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DMR High Deviation (DMR Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the Analog deviation is between 2695Hz and 2803Hz.Deviation meterLPF: 3kHzHPF: OFF

500(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2695~2803Hz

9. QT Deviation

[Analog Wide 5k]

1) Adj item: [Aw QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Wide 5k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.75kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Wide 4k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.60kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 77: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-77

[Analog Narrow]

1) Adj item: [An QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.35kHz±0.05kHz

10. DQT Deviation

[Analog Wide 5k]

1) Adj item: [Aw DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Wide 5k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.430 (Reference value)

0.75kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Wide 4k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.430 (Reference value)

0.60kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 78: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-78 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.430 (Reference value)

0.35kHz±0.05kHz

11. LTR Deviation

[Analog Wide 5k]

1) Adj item: [Aw LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Wide 5k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.00kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Wide 4k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.90kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 79: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-79

[Analog Narrow]

1) Adj item: [An LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

0.75kHz±0.05kHz

12. DTMF Deviation

[Analog Wide 5k]

1) Adj item: [Aw DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.555 (Reference value)

2.50kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.555 (Reference value)

2.00kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 80: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-80 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.555 (Reference value)

1.25kHz±0.05kHz

13. Single Tone Deviation

[Analog Wide 5k]

1) Adj item: [Aw TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

3.00kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

2.40kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 81: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-81

[Analog Narrow]

1) Adj item: [An TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.50kHz±0.05kHz

14. MSK Deviation

[Analog Wide 5k]

1) Adj item: [Aw MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

3.00kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

2.40kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 82: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-82 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.50kHz±0.05kHz

15. CWID Deviation

[Analog Narrow]

1) Adj item: [An CWID]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [CWID Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.512 (Reference value)

1.10kHz±0.10kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-83

4.17.1 Necessary Deviation adjustment item for each signaling and modeThe following shows the necessary adjustment items for each signaling deviation. Please read the following table like the followingexample. In the case of the signaling "QT (Analog Wide 5k)", this signaling is composed of three elements [Balance, MaximumDeviation (Analog Wide 5k) and QT Deviation (Analog Wide 5k)]. Please adjust Balance and Maximum Deviation (Analog Wide 5k)before adjusting QT Deviation (Analog Wide 5k).

• Balance is common with all the above deviation adjustments. If Balance (Transmitter Section 6) has already adjusted, please skipStep1 and adjust from Step2.

• Maximum Deviation (Analog Wide 5k/Wide 4k/Narrow) is common with all the analog signaling deviations and CWID Deviation(NXDN Very Narrow).If Balance and Maximum Deviation (Analog Wide 5k /Wide 4k/Narrow) (Transmitter Section 7) have already adjusted, please skipStep2 and adjust from Step3.

Mode Signaling Necessary adjustment and order

Wide 5k Wide 4k Narrow Very Narrow

Analog Audio 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]

-

QT 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. QT Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. QT Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. QT Deviation

[Analog Narrow]

-

DQT 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. DQT Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. DQT Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DQT Deviation

[Analog Narrow]

-

LTR 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. LTR Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. LTR Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. LTR Deviation

[Analog Narrow]

-

DTMF 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. DTMF Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. DTMF Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DTMF Deviation

[Analog Narrow]

-

5TONE 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. Single Tone Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. Single Tone Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. Single Tone Deviation

[Analog Narrow]

-

MSK(Fleetsync)

1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. MSK Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. MSK Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. MSK Deviation

[Analog Narrow]

-

NXDN Audio - - 1. Balance adjust2. NXDN High Deviation

[NXDN Narrow]

1. Balance adjust2. NXDN High

Deviation [NXDN Very Narrow]

CWID - - - 1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. CWID Deviation

[Analog Narrow]

DMR Audio - - 1. Balance adjust2. DMR High Deviation

-

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1-84 (No.RA054<Rev.001>)

4.18 Receiver Section

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. AF level setting

[Panel test mode]1) CH-Sig: 1-1

SSG output: -47dBm (1mV)(MOD: 1kHz/±1.5kHz)

1) Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1SSG output: -47dBm (1mV) (MOD:1kHz/±1.5kHz)

SSGDVMAF VMDummy load

Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Volume Up/Down knob to obtain 1.41V AF output.(0.5W @ 4ohm load)

1.41V±0.1V

2. IQ Phase

1) Adj item: [An IQ]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

1) Adj item: [IQ Phase]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]After input signal from SSG,1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment]Adjust RSSI Level(DSP Normal Power Mode)Value to the minimum.

3. RSSI reference [DSP (Receive)]

1) Adj item: [An RSSI 1]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 1 DSP (Receive)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Receive)]

1) Adj item: [An RSSI 2]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 2 RF IC (Receive)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

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(No.RA054<Rev.001>)1-85

[DSP (Standby)]

1) Adj item: [An RSSI 3]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 3 DSP (Standby)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Standby)]

1) Adj item: [An RSSI 4]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 4 RF IC (Standby)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

4. Squelch Open

[Analog Wide 5k]

1) Adj item: [Aw SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Open (Analog Wide 5k)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-86 (No.RA054<Rev.001>)

[Analog Wide 4k]

1) Adj item: [As SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±2.4kHz)

1) Adj item: [Squelch Open (Analog Wide 4k)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±2.4kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[Analog Narrow]

1) Adj item: [An SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Open (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[NXDN Narrow]

1) Adj item: [Nn SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-87

[NXDN Very Narrow]

1) Adj item: [Nv SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Very Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[DMR] 1) Adj item: [D SQL]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

1) Adj item: [Squelch Open (DMR)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

5. Squelch Tight

[Analog Wide 5k]

1) Adj item: [Aw SQLT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Tight (Analog Wide 5k)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-88 (No.RA054<Rev.001>)

[Analog Wide 4k]

1) Adj item: [As SQLT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±2.4kHz)

1) Adj item: [Squelch Tight (Analog Wide 4k)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±2.4kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[Analog Narrow]

1) Adj item: [An SQLT]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Tight (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

6. Low RSSI

1) Adj item: [An LRSSI]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [Low RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

7. High RSSI

1) Adj item: [An HRSSI]Adjust:[****]

2) Adj item:[L1]→[L3]→[C2]→[H1]→[H3]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [High RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low3]→[Center2]→[High1]→[High3]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-89

4.19 NX-3820H(G)/3820H K,K2 TYPE Controls

4.19.1 Preparations for checking/tuning the transceiverBefore attempting to check/tune the transceiver, connect the unitto a suitable power supply.Whenever the transmitter is turned on, the unit must beconnected to a suitable dummy load (i.e. power meter).The speaker output connector must be terminated with an 4ohmdummy load and connected to an AC voltmeter and an audiodistortion meter or a SINAD measurement meter at all timesduring checking/tuning.

4.20 Panel Test Mode

4.20.1 Test mode operation featuresThis transceiver has a test mode. To enter test mode, press andhold the [ ] button while turning the transceiver power ON orpress the [ ] button and select the "Panel Test". Before thetransceiver enters test mode, the frequency version informationappears on the LCD momentarily. Test mode can be inhibited byprogramming. To exit test mode, turn the transceiver power OFF.The following functions are available in test mode.

• When the panel test mode is activated, the last used channeland signaling numbers are displayed. When the panel testmode is activated for the first time, the channel and signalingnumbers are 1.

4.20.2 Button operation

*1: When the mode is selected as Analog, this function isenabled.

Power switch

Channel Up/Down buttonVolume Up/Down button

MIC jack

KMC-36 (OPTION)

Keypad

[PTT]

Button "Func" not appears on the sub LCD display

Function Display

[+] Push: Volume upHold: Volume up continuously

-

[-] Push: Volume downHold: Volume down continuously

-

[] Push: Test channel upHold: Test channel up continuously

Channel No.

[] Push: Test channel downHold: Test channel down continuously

Channel No.

[] Push: Squelch level up *1Hold: Squelch off

Squelch levelSquelch off: icon appears

[] Wide/Narrow/Very Narrow

Wide : "w"Narrow: "n"Very Narrow: "v"

[ ] Shift to panel tuning mode

-

[ ] Function on "Func" appears on the sub LCD display

[ ] Push: Test signaling upHold: Test signaling up continuously

Signaling No.

[ (AUX)] MSK 1200bps and 2400bps *1

2400bps: [ ] icon appears

[PTT] Transmit -

[0] to [9]and[#], [ ]

- -

Button "Func" appears on the sub LCD display

Function Display

[+] Function off -

[-] Function off -

[] - -

[] Mode selectionAnalog/NXDN/DMR

Analog: "A"NXDN: "N"DMR: "D"

[] Function off -

[] Button/LCD check The contents of the pressed button etc., appear.

[ ] High power/Medium power/Low power

High:[ ] icon appearsMedium:[ ] icon appearsLow:[ ] icon appears

[ ] Function off -

[ ] External Speaker on/off On: icon appears

[ (AUX)] Compander on/off On: [ ] icon appears

[PTT] Transmit -

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1-90 (No.RA054<Rev.001>)

• LED indicatorRed LED Lights during transmission.Green LED Lights when there is carrier.

• Sub LCD indicator"Func" Appears at function on.

• LCD display in panel test mode

4.20.3 Frequency and SignalingThe transceiver has been adjusted for the frequencies shown inthe following table. When required, readjust them following theadjustment procedure to obtain the frequencies you want inactual operation.

(1) Test frequency

(2) SignalingAnalog Type Signaling

[0] to [9]and[#], [ ]

Function off -

Button "Func" appears on the sub LCD display

Function Display

(Power ON)

Type Frequency range

"F1": 450~520MHz

"F2": 400~470MHz

(After 2sec.)

Temperature [oC]Power

An : Analog narrow mode

Aw : Analog wide 5k mode

Nn : NXDN narrow mode

Nv : NXDN very narrow mode

D : DMR mode

Squelch level

(Analog mode only)

Sub LCD display

Main LCD display Signaling

No.

Channel No.

Kx types are

displayed as "K".

CH K K2

RX (MHz) TX (MHz) RX (MHz) TX (MHz)

1 485.05000 485.10000 435.05000 435.10000

2 450.05000 450.10000 400.05000 400.10000

3 519.95000 519.90000 469.95000 469.90000

4 485.00000 485.00000 435.00000 435.00000

5 485.20000 485.20000 435.20000 435.20000

6 485.40000 485.40000 435.40000 435.40000

7~16 - -

No. RX TX

1 None None

2 None Square Wave

3 LTR Data LTR Data

4 QT:67.0Hz QT:67.0Hz

5 QT:151.4Hz QT:151.4Hz

6 QT:210.7Hz QT:210.7Hz

7 QT:254.1Hz QT:254.1Hz

8 DQT:D023N DQT:D023N

9 DQT:D754I DQT:D754I

10 DTMF Decode (CODE: 159D)

DTMF Encode (CODE: 159D)

11 None DTMF Encode (CODE: 9)

12 2-tone Decode (A: 304.7Hz, B: 3106.0Hz)

2-tone Encode (A: 304.7Hz,B: 3106.0Hz)

13 Single Tone Decode (979.9Hz)

Single Tone Encode (979.9Hz)

14 None Single Tone Encode (1000Hz)

15 None MSK PN9

16 MSK Decode MSK Encode

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(No.RA054<Rev.001>)1-91

NXDN Type Signaling

RAN: Radio Access NumberPN9: Pseudo-Random PatternNo.7, 9 Item: PC test mode only

DMR Type Signaling

4.21 Panel Tuning Mode

4.21.1 Transceiver tuning (To enter tuning mode)To enter tuning mode, press the [ ] button while the transceiveris in test mode. Use the [ (AUX)] button to write tuning datathrough tuning modes, and the [ ]/[ ] button to adjust tuningrequirements (1 to 4096 appears on the LCD).Use the [ ] button to select the adjustment item through tuningmodes. Use the [ ] button to adjust 5, 9 or 17 reference leveladjustments, and use the [ ] button to switch between Wide/Narrow.• LCD display in panel tuning mode

4.21.2 Button operation

No. RX TX

1 RAN1 RAN1

2 None PN9

3 RAN1 Maximum Deviation Pattern

7 FSW + PN9 FSW + PN9

9 Tone Pattern (1031Hz) Tone Pattern (1031Hz)

No. RX TX

1 CC 00 Burst CC 00 Burst

2 PN9 PN9

3 CC 00 Burst Maximum Deviation Pattern

4 CC 00 Burst 1/3 Deviation Pattern

5 CC 00 Burst 0 Continuous Pattern

6 SYNC (Each Slot) +PN9 Burst Pattern

SYNC (Each Slot) + PN9Burst Pattern

7 SYNC (Super Frame) +PN9 Burst Pattern

SYNC (Super Frame) +PN9 Burst Pattern

8 CC 00 Burst 0 Burst Pattern

9 Tone Pattern Tone Test Burst Pattern

10 Silence Pattern Silence Burst Pattern

11 Audio Test Pattern Audio Test Burst Pattern

12 Vocoder Loop None

An AST 2562.6

CV voltage, AD value, etc

Sub LCDdisplay

L1

Adjustment point

Main LCDdisplay Adjustment value

(1~4096)

Proper value guide(When the frequency adjustment is necessary,

or is displayed.)

Adjustment item

An : Analog narrow modeAw : Analog wide 5k modeAs : Analog wide 4k mode *1Nn : NXDN narrow modeNv : NXDN very narrow modeD : DMR mode

*1: Wide 4k is displayed only when the PC test mode is used. However, it aims at production for factory, or a operation verification of the transceiver. It is not necessary in operation of the transceiver to adjust.

L1L2L3L4L5L6C1C2C3

C4C5H1H2H3H4H5H6

Button Function

Push Hold (1 second)

[+] Volume up Continuation up

[-] Volume down Continuation down

[ ] Adjustment value up Continuation up

[ ] Adjustment value down Continuation down

[ ] Auto adjustment start Output tone pattern change of balance adjustment (A change is possible only during balance adjustment.)

[ ] Wide/Narrow/NXDN/DMR

-

[ ] Shift to panel test mode -

[ ] To enter 5,9 or 17 reference level adjustments

-

[ ] Go to next adjustment item

Back to last adjustment item (At the time of 5, 9 or 17 point adjustment: Adjustment point change)

[ (AUX)] Writes the adjustmentvalue

-

[PTT](MIC)

Transmit

[0] to [9]and[#],[ ](MIC)

-

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1-92 (No.RA054<Rev.001>)

4.21.3 5, 9 or 17 reference level adjustments frequencyMaximum Transmit Power, High Transmit Power, Medium Transmit Power, Low Transmit Power, IQ Phase, RSSI Reference,Squelch Open, Squelch Tight, Low RSSI, High RSSI

Balance, Maximum Deviation , NXDN High Deviation, DMR High Deviation, QT Deviation, DQT Deviation, LTR Deviation,DTMF Deviation, Single Tone Deviation, MSK Deviation, CW ID Deviation

VCO Assist

Tuning point Display K K2

RX (MHz) TX (MHz) RX (MHz) TX (MHz)

1 L1 450.050000 450.100000 400.05000 400.10000

2 L5 467.550000 467.600000 417.55000 417.60000

3 C3 485.050000 485.100000 435.05000 435.10000

4 H2 502.550000 502.600000 452.55000 452.60000

5 H6 519.950000 519.900000 469.95000 469.90000

Tuning point Display K K2

RX (MHz) TX (MHz) RX (MHz) TX (MHz)

1 L1 450.050000 450.100000 400.05000 400.10000

2 L3 458.850000 458.900000 408.85000 408.90000

3 L5 467.550000 467.600000 417.55000 417.60000

4 C1 476.350000 476.400000 426.35000 426.40000

5 C3 485.050000 485.100000 435.05000 435.10000

6 C5 493.850000 493.900000 443.85000 443.90000

7 H2 502.550000 502.600000 452.55000 452.60000

8 H4 511.350000 511.400000 461.35000 461.40000

9 H6 519.950000 519.900000 469.95000 469.90000

Tuning point Display K K2

RX (MHz) TX (MHz) RX (MHz) TX (MHz)

1 L1 450.050000 450.100000 400.05000 400.10000

2 L2 454.450000 454.500000 404.45000 404.50000

3 L3 458.850000 458.900000 408.85000 408.90000

4 L4 463.250000 463.300000 413.25000 413.30000

5 L5 467.550000 467.600000 417.55000 417.60000

6 L6 471.950000 472.000000 421.95000 422.10000

7 C1 476.350000 476.400000 426.35000 426.40000

8 C2 480.750000 480.800000 430.75000 430.80000

9 C3 485.050000 485.100000 435.05000 435.10000

10 C4 489.450000 489.500000 439.45000 439.50000

11 C5 493.850000 493.900000 443.85000 443.90000

12 H1 498.250000 498.300000 448.25000 448.30000

13 H2 502.550000 502.600000 452.55000 452.60000

14 H3 506.950000 507.000000 456.95000 457.10000

15 H4 511.350000 511.400000 461.35000 461.40000

16 H5 515.750000 515.800000 465.75000 465.80000

17 H6 519.950000 519.900000 469.95000 469.90000

Page 93: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-93

4.21.4 Adjustment item supplement

Adjustment Item Description

LCD Contrast The contrast of LCD display can be changed.

VCO Assist The lock voltage of VCO is adjusted.This item must be adjusted before receiver and transmitter adjustment items.

Frequency Frequency is adjusted under receivingcondition with SSG.The SSG needs 0.001ppm accuracy soplease use a standard oscillator if necessary.This item can be adjusted only in PC TestMode so that the adjustment value is notchanged easily.

RTC Correction Real Time Clock is adjusted.This item uses the internal clock.(Any measurement equipment is not required.)

Maximum Transmit Power

Maximum Transmit Power is adjusted.

High Transmit Power

High Transmit Power is adjusted.

Mid Transmit Power

Medium Transmit Power is adjusted.

Low Transmit Power

Low Transmit Power is adjusted.

Ramp Offset Adjust this item to the optimal Ramp voltage.

Balance The transmit modulation frequency response is adjusted.This item is adjusted so that the deviationof 2kHz becomes the same deviation of 20Hz.This item must be adjusted before all adjustment items for deviations are adjusted.

Maximum Deviation(Analog Wide 5k/Wide 4k/Narrow)

Maximum Deviation of Analog (Wide 5k/Wide 4k/Narrow) is adjusted.This item must be adjusted before all adjustment items for tone deviations are adjusted.

High Deviation NXDN/DMR high deviation is adjusted.

QT Deviation QT deviation is adjusted.

DQT Deviation DQT deviation is adjusted.

LTR Deviation LTR deviation is adjusted.

DTMF Deviation DTMF deviation is adjusted.

Single Tone Deviation

The deviation of Single Tone used in “2-tone” and “5-tone” is adjusted.

MSK Deviation MSK deviation is adjusted.

CW ID Deviation CWID tone deviation is adjusted.CWID is used to inform the others who istransmitting on a 6.25-kHz spacing channel.(In FCC rule, Analog mode or CWID isrequired for each channel-spacing.)

IQ Phase Correction of phase difference shift between I and Q.

RSSI Reference The minimum RSSI level for scan stop isadjusted.

Squelch Open The squelch level at level “1” is adjusted.

Squelch Tight The squelch level at level “9” is adjusted.

Low RSSI RSSI display level “ ” is adjusted.Both “Low RSSI” and “High RSSI” must beadjusted. (The curve data of RSSI level isapplied.)

High RSSI

Adjustment Item Description

Page 94: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-94 (No.RA054<Rev.001>)

4.21.5 Adjustment item and Display

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide)

AS *2(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

1 LCD Contrast CNTR - 1 point ADJ CommonSection 21~256

2 VCO Assist AST (CV voltage) - - 17 - - - CommonSection 31~4096

3 RTC Correction RTC - - CommonSection 5-2.00 ~ -0.01 ,0.00 ,+0.01 ~ +2.00

4 Maximum Transmit Power

MAX_P - - - 5 - - - TransmitterSection 11~256

5 High Transmit Power

H_PWR - - - 5 - - - TransmitterSection 21~1024

6 Medium Transmit Power

M_PWR - - - 5 - - - TransmitterSection 31~1024

7 Low Transmit Power

L_PWR - - - 5 - - - TransmitterSection 41~1024

8 Ramp Offset RAMP (ADC measurement value)

1 point ADJ TransmitterSection 51~1024

9 Balance BAL (Encode frequency) - - 9 - - - TransmitterSection 61~1024

10 Maximum Deviation

ADEV - 9 9 *2 9 - - - TransmitterSection 71~1024

11 NXDN High Deviation

NDEV - - - - 9 9 - TransmitterSection 81~1024

12 DMR High Deviation

DDEV - - - - - - 9 TransmitterSection 91~1024

13 QT Deviation QT - 9 9 *2 9 - - - TransmitterSection 101~1024

14 DQT Deviation DQT - 9 9 *2 9 - - - TransmitterSection 111~1024

15 LTR Deviation LTR - 9 9 *2 9 - - - TransmitterSection 121~1024

16 DTMF Deviation DTMF - 9 9 *2 9 - - - TransmitterSection 131~1024

17 Single Tone Deviation

TONE - 9 9 *2 9 - - - TransmitterSection 141~1024

18 MSK Deviation MSK - 9 9 *2 9 - - - TransmitterSection 151~1024

19 CW ID Deviation CWID - - - 9 - - - TransmitterSection 161~1024

20 IQ Phase IQ (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 21~63

21 RSSI Reference 1 DSP (Receive)

RSSI1 (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

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(No.RA054<Rev.001>)1-95

*2: Wide 4k can be set up only when the PC test mode is used.

22 RSSI Reference 2 RF IC(Receive)

RSSI2 (RSSI RF IC(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

23 RSSI Reference 3 DSP (Standby)

RSSI3 (RSSI DSP (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

24 RSSI Reference 4 RF IC (Standby)

RSSI4 (RSSI RF IC (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

25 Squelch Open SQL (ASQDET measurement value)

5 5 *2 5 5 5 5 ReceiveSection 41~256

26 Squelch Tight SQLT (ASQDET measurement value)

5 5 *2 5 - - - ReceiveSection 51~256

27 Low RSSI LRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 61~256

28 High RSSI HRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 71~256

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide)

AS *2(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

Page 96: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-96 (No.RA054<Rev.001>)

4.21.6 Panel tuning mode flow chartNote:

* In this Panel tuning mode flow chart, the Adjustment item name is modified.

SQL An SQL Aw SQL Nn

Squelch (Open) Narrow Squelch (Open) Wide Squelch (Open) Narrow

Panel Test Mode

[ ]hold

LCD Contrast

CNTR

VCO Assist

AST

RTC Correction

RTC

Ramp Offset

RAMP

High Power Narrow 5 reference level

H_PWR An Adjustments

Medium Power Narrow 5 reference level

M_PWR An Adjustments

Low Power Narrow 5 reference level

L_PWR An Adjustments

Balance Narrow

BAL An

Analog Max Deviation Narrow Analog Max Deviation Wide

ADEV An ADEV Aw

9 reference level

Adjustments

9 reference level

Adjustments

9 reference level

Adjustments

NXDN High Deviation Narrow NXDN High Deviation VeryNarrow

NDEV Nn NDEV Nv

QT Deviation Narrow QT Deviation Wide

wATQnATQ

9 reference level

Adjustments

DQT Deviation Narrow DQT Deviation Wide

DQT An DQT Aw

9 reference level

Adjustments

LTR Deviation Narrow LTR Deviation Wide

wARTLnARTL

9 reference level

Adjustments

DTMF Deviation Narrow DTMF Deviation Wide

DTMF An DTMF Aw

9 reference level

Adjustments

MSK Deviation Narrow MSK Deviation Wide

MSK An MSK Aw

9 reference level

Adjustments

CW ID Deviation Narrow

CWID An

Squelch (Open) DMR

5 reference level

Adjustments

RSSI (Low) Narrow

nAISSRL

RSSI (High) Narrow

nAISSRH

Adjustment Item N/W/VN

LCD Display

For all adjustment items, press the [ ] button

to write the adjustment value.

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ] [ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ] [ ]

[ ] [ ] [ ] [ ] [ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

9 reference level

Adjustments

[ ]

RSSI Referance 1

RSSI1[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]IQ Phase

IQ[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 2

RSSI2[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 3

RSSI3[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 4

RSSI4[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]

[ ]

[ ]

[ ]

Single Tone Deviation Narrow Single Tone Deviation Wide

TONE An TONE Aw

9 reference level

Adjustments

[ ] [ ][ ]press [ ]hold

[ ]

[ ]

[ ]

[ ]

DMR High Deviation

DDEV

[ ]press [ ]hold

[ ]

[ ] [ ] [ ]VeryNarrow

Squelch (Tight) Narrow Squelch (Tight) Wide

wATLQSnATLQS

5 reference level

Adjustments

[ ] [ ][ ]press [ ]hold

[ ] [ ]

TLSn

[ ] [ ][ ]press [ ]hold

[ ] [ ]

[ ]press [ ]hold

DMR

D

Squelch (Open)

Nv D

[ ]

17 reference level

Adjustments

9 reference level

Adjustments

IQ Phase

RSSI Reference 1

RSSI Reference 2

RSSI Reference 3

RSSI Reference 4

Open Squelch

Low RSSI

High RSSI

Tight Squelch

VCO Assist

Maximum Deviation

NXDN High Deviation

DMR High DeviationQT Deviation

DQT Deviation

LTR Deviation

DTMF Deviation

Single Tone Deviation

MSK Deviation

CW ID Deviation

Balance

5 reference level

Adjustments

[ ]

5 reference level

Adjustments

[ ]

Max PowerMAX_P

[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

Maximum Transmit Power

Adjustment Point

LCD Display

5 reference level

L1

L5

C3

H6

H2

Low 1

Adjustments

Low 5

Center 3

High 6

5 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]High 2 [ ]

[ ]

[ ]

High Transmit Power

Medium Transmit Power

Low Transmit Power

Adjustment Point

LCD Display

9 reference level

L1

L3

L5

H6

C1

C3

C5

H2

H4

Low 1

Adjustments

Low 3

Low 5

High 6

9 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]Center 1 [ ]

[ ]

Center 3

Center 5

[ ]

[ ][ ]

[ ]High 2 [ ]

[ ]

High 4 [ ]

[ ]

[ ]

Adjustment Point

LCD Display

17 reference level

L1

L2

L3

L4

L5

L6

C1

C2

C3

C4

C5

H1

H2

H3

H4

H5

H6

Low 1

Adjustments

Low 2

Low 3

17 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]Low 4 [ ]

[ ]

Low 5

Low 6

[ ]

[ ][ ]

[ ]Center 1 [ ]

[ ]

Center 2 [ ]

[ ]

Center 3 [ ]

[ ]

Center 4 [ ]

[ ]

Center 5 [ ]

[ ]

High 1 [ ]

[ ]

High 2 [ ]

[ ]

High 3 [ ]

[ ]

High 4 [ ]

[ ]

High 5 [ ]

[ ]

High 6 [ ]

[ ]

Page 97: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-97

4.22 Adjustment points

TX-RX UNIT (XC1-183)Component Side

4.23 Test Equipment Required for Alignment

*The test equipment which is not used for adjustment is contained in this table.

RTC (CN55)

RT

C

Test Equipment Major Specifications

1. Standard Signal Generator (SSG)

Frequency RangeModulation Output

100 to 900MHzFrequency modulation and external modulation-127dBm/0.1uV to greater than -20dBm/22.4mV

When performing the Frequency adjustment, the following accuracy is necessary.• 0.001ppmUse a standard oscillator for adjustments, if necessary.

2. Power Meter Input ImpedanceOperation FrequencyMeasurement Capability

50ohm100 to 900MHzVicinity of 100W

3. Deviation Meter Frequency Range 100 to 900MHz

4. Digital Volt Meter (DVM)

Measuring RangeInput Impedance

10mV to 20V DCHigh input impedance for minimum circuit loading

5. Oscilloscope DC through 30MHz

6. Frequency Counter Frequency RangeFrequency Stability

10Hz to 1000MHz0.2ppm or less

To measure the oscillating frequency of the internal clock 32766.00Hz~32770.00Hz forRTC Correction Resolution 0.01Hz is better for accuracy adjustment.

7. Ammeter 20A or more

8. AF Volt Meter (AF VM) Frequency RangeVoltage Range

50Hz to 10kHz1mV to 10V

9. Audio Generator (AG) Frequency RangeOutput

50Hz to 5kHz or more0 to 1V

10. Distortion Meter CapabilityInput Level

3% or less at 1kHz50mV to 10Vrms

11. Spectrum Analyzer Measuring Range DC to 1GHz or more

12. 4ohm Dummy Load Approx. 4ohm, 10W

13. Regulated Power Supply 13.6V, approx. 20A (adjustable from 9V to 17V)Useful if ammeter equipped

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1-98 (No.RA054<Rev.001>)

Test cable for microphone input (E30-3360-28) MIC connector (Front panel view)

Tuning cable (E30-7754-05)Adapter cable (E30-7754-05) is required for injecting an audioif PC tuning is used.See “PC Mode” section for the connection.

4.24 Radio check Section

3

2

4

5

6

7

8

3

1

2

4

5

6

7

8

1GREEN

RED

BLACK

BLUE

SHIELD

WHITE

GRAY

YELLOW

PTT

E

MIC-E

MIC

HK

1 : MBL

2 : +B

3 : GND

4 : PTT/TXD (PC serial data from radio)

5 : MICE

6 : MIC

7 : HOOK/RXD (PC serial data to radio)

8 : DM

1

8

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Frequency check

1)CH-Sig: 1-1PTT: ON

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

f. counter Panel ANT Check an internal temperature of radio from 20°C to 33°C.

±0.25ppm±[email protected](K2)±[email protected](K)

2. High power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 40W~50W13A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

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(No.RA054<Rev.001>)1-99

3.Mediumpowercheck

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 25W~35W10A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

4. Low power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 3.5W~6.5W7.0A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Type: AnalogSignaling: 1PTT: Press [Transmit] button.

5. MIC sensitivity check

1)CH-Sig: 1-1AG: 1kHzPTT: ON

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1AG: 1kHzPTT: Press [Transmit] button.

DeviationmeterOscilloscopeAGAF VM

Panel ANTMIC jack

Adjust AGinput to get astandardMOD.

5mV ±1mV

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-100 (No.RA054<Rev.001>)

4.25 Common Section

6. Sensitivitycheck

1)CH-Sig: 1-1SSG outputWide: -117dBm(0.32μV)(MOD: 1kHz/±3kHz)Narrow: -117dBm(0.32μV)(MOD: 1kHz/±1.5kHz)

1)Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1SSG outputWide: -117dBm (0.32μV)(MOD: 1kHz/±3kHz)Narrow: -117dBm (0.32μV)(MOD: 1kHz/±1.5kHz)

SSGAF VMOscilloscopeDistortionmeter4ohmDummy load

Panel ANTExt. SPconnector

Check 12dB SINAD or more

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Setting

1) DC voltage:13.6V2) SSG standard modulation

[Wide] MOD:1kHz,DEV:3kHz[Narrow] MOD:1kHz,DEV:1.5kHz

2.LCD Contrast

1) Adj item[CNTR]Adjust:[****]

Press [ ] button to store the adjustment value.

1) Adj item[LCD Contrast]Data: [****]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.

280 (Reference value)

3. VCO Assist

1) Adj item:[AST]Adjust:[****]

2) Adj item:[L1]→[L2]→[L3]→[L4]→[L5]→[L6]→[C1]→[C2]→[C3]→[C4]→[C5]→[H1]→[H2]→[H3]→[H4]→[H5]→[H6]Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [VCO Assist]

2) Adj item:[Low1],[Low2], [Low3],[Low4],[Low5], [Low6][Center1], [Center2], [Center3], [Center4], [Center5], [High1],[High2][High3],[High4],[High5][High6]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment][V] Indicator on the PC window shows VCO lock voltage. Change the adjustment value to get VCO lock voltage within the limit of the specified voltage.

Note:Confirm the VCO lock voltage approximately 3 seconds after the adjustment value is changed.

2.5V±0.1V[Automatic Adjustment]After the automatic adjustment is performed, verify that the VCO lock voltage is within the voltage range which is specified by the manual adjustment.[Manual Adjustment]Press [Apply] button to store the adjustment value after all adjustment points have been adjusted.Adjustment value range:K: 1200 - 4096K2: 500 - 1950

Page 101: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-101

4.26 Transmitter Section

4. Frequency

*The Frequency adjustment can be performed only in PC test mode.

1) Adj item: [Frequency]SSG output: -20dBm (22.4mV) (CW (without modulation))

Caution:Perform the frequency adjustment under the following conditions.

• Temperature range of +20°C to +33°C (+68.0°F to +91.4°F).(The temperature is displayed on the Frequency adjustment screen of the KPG-D3/D3N and the LCD of the transceiver.)

• Use an accuracy of 0.001ppm for the SSG. (Use a standard oscillator if necessary.)

SSG Panel ANT [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode]Press [Start] button of “Auto Tuning”. Press [Apply] button to store the adjustment value after the automatic adjustment has finished.

[PC test mode]“IF20” value = Within 0±30 digits. The value of “IF20” will become around “0” after the adjustment has finished.

Remark:“Frequency” is adjusted under receiving condition with SSG.

5. RTC Correciton

1) Adj item:[RTC]Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [RTC Correction]Data: [****]Press [Apply] button to store the adjustment value.

Frequency Counter

TX-RX

TESTPOINT(CN55)

Remark:The adjustment value should input the display of a Frequency Counter.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1.MaximumTransmitPower

1) Adj item:[MAX_P]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maximum Transmit Power]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

57.5W ±2.5W15A or less

Page 102: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-102 (No.RA054<Rev.001>)

2. High Transmit power

1) Adj item:[H_PWR]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [High Transmit Power]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

45W ±1W 13A or less

3. Medium Transmit power

1) Adj item:[M_PWR]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Medium Transmit Power]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

30W ±1W 10A or less

4. Low Transmit power

1) Adj item:[L_PWR]

Adjust:[****]2) Adj item:

[L1]→[L5]→[C3]→[H2]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Low Transmit Power]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

5W ±0.5W 7A or less

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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(No.RA054<Rev.001>)1-103

5.Ramp Offset

1)Adj item:[RAMP]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Ramp Offset]Press [Autotune(TX starts)] button. Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune(TX

starts)] button.2) Press [Apply] button

to store the adjustment value after the automatic adjustment has finished.

3) Check Ramp Offset Monitor Value Over 50.

[Manual Adjustment]1) Set the adjustment

value to "1".2) Press [Transmit]

button and increase the adjustment value slowly while monitoring the offset monitor value.

3) Set the adjustment value when the offset monitor value exceed "60".

6. Balance

1) Adj item: [An BAL]Adjust:[****]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Balance]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

The Deviation of 20Hz frequency is fixed.Change the 2kHz adjustment value to become the same deviation of 20Hz within the specified range.[Panel tuning mode]PTT:ONWhile PTT:ON, press the [] button to change the 20Hz/2kHz.[PC test mode]PTT: Press [Transmit] button.While PTT:ON, click the check box "2kHz Sine Wave" to change the 20Hz/2kHz.

2kHz Tone deviation is within ± 1.0% of 20Hz tone deviation.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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1-104 (No.RA054<Rev.001>)

7. Maximum Deviation

[Analog Wide]

1) Adj item: [Aw ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2V]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the deviation is between 4150Hz and 4250Hz.Deviation meterLPF: 15kHzHPF: OFF

K:500(Reference value)K2:496(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

4150~4250Hz

[Analog Narrow]

1) Adj item: [An ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the deviation is between 2050Hz and 2150Hz. Deviation meterLPF: 15kHzHPF: OFF

K:500(Reference value)K2:493(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2050~2150Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

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Page 105: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-105

8. NXDN High Deviation[NXDN Narrow]

1) Adj item: [Nn NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the Analog deviation is between 2995Hz and 3117Hz.Deviation meterLPF: 3kHzHPF: OFF

K:503(Reference value)K2:498(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2995~3117Hz

[NXDN Very Narrow]

1) Adj item: [Nv NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Very Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point.(The value is written below.)Transmit at each adjustment point and check that the Analog deviation is between 1311Hz and 1363Hz.Deviation meterLPF: 3kHzHPF: OFF

K:503(Reference value)K2:498(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

1311~1363Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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Page 106: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-106 (No.RA054<Rev.001>)

9. DMR High Deviation

1) Adj item: [D DDEV]Adjust: [****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DMR High Deviation (DMR Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the Analog deviation is between 2695Hz and 2803Hz.Deviation meterLPF: 3kHzHPF: OFF

K:503(Reference value)K2:496(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2695~2803Hz

10. QT Deviation

[Analog Wide]

1) Adj item: [Aw QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Wide)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:520(Reference value)K2:529(Reference value)

0.75kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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Page 107: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-107

[Analog Narrow]

1) Adj item: [An QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:520(Reference value)K2:529(Reference value)

0.35kHz±0.05kHz

11. DQT Deviation

[Analog Wide]

1) Adj item: [Aw DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Wide)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:414(Reference value)K2:426(Reference value)

0.75kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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Page 108: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-108 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:414(Reference value)K2:426(Reference value)

0.35kHz±0.05kHz

12. LTR Deviation

[Analog Wide]

1) Adj item: [Aw LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Wide)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:508(Reference value)K2:518(Reference value)

1.00kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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Page 109: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-109

[Analog Narrow]

1) Adj item: [An LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:494(Reference value)K2:518(Reference value)

0.75kHz±0.05kHz

13. DTMF Deviation

[Analog Wide]

1) Adj item: [Aw DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:545(Reference value)K2:542(Reference value)

2.50kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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Page 110: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-110 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:540(Reference value)K2:542(Reference value)

1.25kHz±0.05kHz

14. Single Tone Deviation

[Analog Wide]

1) Adj item: [Aw TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:514(Reference value)K2:511(Reference value)

3.00kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

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Page 111: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-111

[Analog Narrow]

1) Adj item: [An TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:510(Reference value)K2:511(Reference value)

1.50kHz±0.05kHz

15. MSK Deviation

[Analog Wide]

1) Adj item: [Aw MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Wide)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:503(Reference value)K2:500(Reference value)

3.00kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 112: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-112 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:500(Reference value)K2:500(Reference value)

1.50kHz±0.05kHz

16. CWID Deviation

[Analog Narrow]

1) Adj item: [An CWID]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [CWID Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.K:506(Reference value)K2:508(Reference value)

1.10kHz±0.10kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-113

4.26.1 Necessary Deviation adjustment item for each signaling and modeThe following shows the necessary adjustment items for each signaling deviation. Please read the following table like the followingexample. In the case of the signaling "QT (Analog Wide)", this signaling is composed of three elements [Balance, Maximum Deviation(Analog Wide) and QT Deviation (Analog Wide)]. Please adjust Balance and Maximum Deviation (Analog Wide) before adjusting QTDeviation (Analog Wide).

• Balance is common with all the above deviation adjustments. If Balance (Transmitter Section 6) has already adjusted, please skipStep1 and adjust from Step2.

• Maximum Deviation (Analog Wide/Narrow) is common with all the analog signaling deviations and CWID Deviation (NXDN VeryNarrow).If Balance and Maximum Deviation (Analog Wide /Narrow) (Transmitter Section 7) have already adjusted, please skip Step2 andadjust from Step3.

Mode Signaling Necessary adjustment and order

Wide Narrow Very Narrow

Analog Audio 1. Balance adjust2. Maximum Deviation

[Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]

-

QT 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. QT Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. QT Deviation [Analog Narrow]

-

DQT 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. DQT Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DQT Deviation

[Analog Narrow]

-

LTR 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. LTR Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. LTR Deviation [Analog Narrow]

-

DTMF 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. DTMF Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DTMF Deviation [Analog Narrow]

-

2TONE 1. Balance adjust2. Maximum Deviation

[Analog Wide]3. Single Tone Deviation [Analog

Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. Single Tone Deviation

[Analog Narrow]

-

MSK(Fleetsync)

1. Balance adjust2. Maximum Deviation

[Analog Wide]3. MSK Deviation [Analog Wide]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. MSK Deviation

[Analog Narrow]

-

NXDN Audio - 1. Balance adjust2. NXDN High Deviation

[NXDN Narrow]

1. Balance adjust2. NXDN High Deviation

[NXDN Very Narrow]

CWID - - 1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. CWID Deviation

[Analog Narrow]

DMR Audio - 1. Balance adjust2. DMR High Deviation

-

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1-114 (No.RA054<Rev.001>)

4.27 Receiver Section

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. AF level setting

[Panel test mode]1) CH-Sig: 1-1

SSG output: -47dBm (1mV)(MOD: 1kHz/±1.5kHz)

1) Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1SSG output: -47dBm (1mV) (MOD:1kHz/±1.5kHz)

SSGDVMAF VMDummy load

Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Volume Up/Down knob to obtain 1.41V AF output.(0.5W @ 4ohm load)

1.41V±0.1V

2. IQ Phase

1) Adj item: [An IQ]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

1) Adj item: [IQ Phase]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]After input signal from SSG,1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment]Adjust RSSI Level(DSP Normal Power Mode)Value to the minimum.

3. RSSI reference [DSP (Receive)]

1) Adj item: [An RSSI 1]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 1 DSP (Receive)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Receive)]

1) Adj item: [An RSSI 2]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 2 RF IC (Receive)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

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(No.RA054<Rev.001>)1-115

[DSP (Standby)]

1) Adj item: [An RSSI 3]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 3 DSP (Standby)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Standby)]

1) Adj item: [An RSSI 4]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 4 RF IC (Standby)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

4. Squelch Open

[Analog Wide]

1) Adj item: [Aw SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Open (Analog Wide)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-116 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Open (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[NXDN Narrow]

1) Adj item: [Nn SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[NXDN Very Narrow]

1) Adj item: [Nv SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Very Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-117

[DMR] 1) Adj item: [D SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

1) Adj item: [Squelch Open (DMR)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

5. Squelch Tight

[Analog Wide]

1) Adj item: [Aw SQLT]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Tight (Analog Wide)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[Analog Narrow]

1) Adj item: [An SQLT]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Tight (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-118 (No.RA054<Rev.001>)

6. Low RSSI

1) Adj item: [An LRSSI]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [Low RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

7. High RSSI

1) Adj item: [An HRSSI]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [High RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-119

4.28 NX-3820(G)/3820 E TYPE Controls

4.28.1 Preparations for checking/tuning the transceiverBefore attempting to check/tune the transceiver, connect the unitto a suitable power supply.Whenever the transmitter is turned on, the unit must beconnected to a suitable dummy load (i.e. power meter).The speaker output connector must be terminated with an 4ohmdummy load and connected to an AC voltmeter and an audiodistortion meter or a SINAD measurement meter at all timesduring checking/tuning.

4.29 Panel Test Mode

4.29.1 Test mode operation featuresThis transceiver has a test mode. To enter test mode, press andhold the [ ] button while turning the transceiver power ON orpress the [ ] button and select the "Panel Test". Before thetransceiver enters test mode, the frequency version informationappears on the LCD momentarily. Test mode can be inhibited byprogramming. To exit test mode, turn the transceiver power OFF.The following functions are available in test mode.

• When the panel test mode is activated, the last used channeland signaling numbers are displayed. When the panel testmode is activated for the first time, the channel and signalingnumbers are 1.

4.29.2 Button operation

*1: When the mode is selected as Analog, this function isenabled.

Power switch

Channel Up/Down buttonVolume Up/Down button

MIC jack

KMC-36 (OPTION)

Keypad

[PTT]

Button "Func" not appears on the sub LCD display

Function Display

[+] Push: Volume upHold: Volume up continuously

-

[-] Push: Volume downHold: Volume down continuously

-

[] Push: Test channel upHold: Test channel up continuously

Channel No.

[] Push: Test channel downHold: Test channel down continuously

Channel No.

[] Push: Squelch level up *1Hold: Squelch off

Squelch levelSquelch off: icon appears

[] Wide 5k/Wide 4k/Narrow/Very Narrow

Wide 5k: "w"Wide 4k: "s"Narrow: "n"Very Narrow: "v"

[ ] Shift to panel tuning mode

-

[ ] Function on "Func" appears on the sub LCD display

[ ] Push: Test signaling upHold: Test signaling up continuously

Signaling No.

[ (AUX)] MSK 1200bps and 2400bps *1

2400bps: [ ] icon appears

[PTT] Transmit -

[0] to [9]and[#], [ ]

- -

Button "Func" appears on the sub LCD display

Function Display

[+] Function off -

[-] Function off -

[] - -

[] Mode selectionAnalog/NXDN/DMR

Analog: "A"NXDN: "N"DMR: "D"

[] Function off -

[] Button/LCD check The contents of the pressed button etc., appear.

[ ] High power/Medium power/Low power

High:[ ] icon appearsMedium:[ ] icon appearsLow:[ ] icon appears

[ ] Function off -

[ ] External Speaker on/off On: icon appears

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1-120 (No.RA054<Rev.001>)

• LED indicatorRed LED Lights during transmission.Green LED Lights when there is carrier.

• Sub LCD indicator"Func" Appears at function on.

• LCD display in panel test mode

4.29.3 Frequency and SignalingThe transceiver has been adjusted for the frequencies shown inthe following table. When required, readjust them following theadjustment procedure to obtain the frequencies you want inactual operation.

(1) Test frequency

(2) SignalingAnalog Type Signaling

[ (AUX)] Compander on/off On: [ ] icon appears

[PTT] Transmit -

[0] to [9]and[#], [ ]

Function off -

Button "Func" appears on the sub LCD display

Function Display

(Power ON)

Type Frequency range

400~470MHz

(After 2sec.)

Temperature [oC]Power

An : Analog narrow mode

Aw : Analog wide 5k mode

As : Analog wide 4k mode

Nn : NXDN narrow mode

Nv : NXDN very narrow mode

D : DMR mode

Squelch level

(Analog mode only)

Sub LCD display

Main LCD display Signaling

No.

Channel No.

CH RX (MHz) TX (MHz)

1 435.05000 435.10000

2 400.05000 400.10000

3 469.95000 469.90000

4 435.00000 435.00000

5 435.20000 435.20000

6 435.40000 435.40000

7~16 - -

No. RX TX

1 None None

2 None Square Wave

3 LTR Data LTR Data

4 QT:67.0Hz QT:67.0Hz

5 QT:151.4Hz QT:151.4Hz

6 QT:210.7Hz QT:210.7Hz

7 QT:254.1Hz QT:254.1Hz

8 DQT:D023N DQT:D023N

9 DQT:D754I DQT:D754I

10 DTMF Decode (CODE: 159D)

DTMF Encode (CODE: 159D)

11 None DTMF Encode (CODE: 9)

12 2-tone Decode (A: 304.7Hz, B: 3106.0Hz)

2-tone Encode (A: 304.7Hz,B: 3106.0Hz)

13 Single Tone Decode (979.9Hz)

Single Tone Encode (979.9Hz)

14 None Single Tone Encode (1000Hz)

15 None MSK PN9

16 MSK Decode MSK Encode

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(No.RA054<Rev.001>)1-121

NXDN Type Signaling

RAN: Radio Access NumberPN9: Pseudo-Random PatternNo.7, 9 Item: PC test mode only

DMR Type Signaling

4.30 Panel Tuning Mode

4.30.1 Transceiver tuning (To enter tuning mode)To enter tuning mode, press the [ ] button while the transceiveris in test mode. Use the [ (AUX)] button to write tuning datathrough tuning modes, and the [ ]/[ ] button to adjust tuningrequirements (1 to 4096 appears on the LCD).Use the [ ] button to select the adjustment item through tuningmodes. Use the [ ] button to adjust 5, 9 or 17 reference leveladjustments, and use the [ ] button to switch between Wide5k/Wide4k/Narrow.• LCD display in panel tuning mode

4.30.2 Button operation

4.30.3 5, 9 or 17 reference level adjustments frequencyMaximum Transmit Power, High Transmit Power, MediumTransmit Power, Low Transmit Power, IQ Phase, RSSIReference, Squelch Open, Squelch Tight, Low RSSI, HighRSSI

Balance, Maximum Deviation, NXDN High Deviation, DMRHigh Deviation, QT Deviation, DQT Deviation, LTRDeviation, DTMF Deviation, Single Tone Deviation, MSKDeviation, CW ID Deviation

No. RX TX

1 RAN1 RAN1

2 None PN9

3 RAN1 Maximum Deviation Pattern

7 FSW + PN9 FSW + PN9

9 Tone Pattern (1031Hz) Tone Pattern (1031Hz)

No. RX TX

1 CC 00 Burst CC 00 Burst

2 PN9 PN9

3 CC 00 Burst Maximum Deviation Pattern

4 CC 00 Burst 1/3 Deviation Pattern

5 CC 00 Burst 0 Continuous Pattern

6 SYNC (Each Slot) +PN9 Burst Pattern

SYNC (Each Slot) + PN9Burst Pattern

7 SYNC (Super Frame) +PN9 Burst Pattern

SYNC (Super Frame) +PN9 Burst Pattern

8 CC 00 Burst 0 Burst Pattern

9 Tone Pattern Tone Test Burst Pattern

10 Silence Pattern Silence Burst Pattern

11 Audio Test Pattern Audio Test Burst Pattern

12 Vocoder Loop None

An AST 2562.6

CV voltage, AD value, etc

Sub LCDdisplay

L1

Adjustment point

Main LCDdisplay Adjustment value

(1~4096)

Proper value guide(When the frequency adjustment is necessary,

or is displayed.)

Adjustment item

An : Analog narrow modeAw : Analog wide 5k modeAs : Analog wide 4k modeNn : NXDN narrow modeNv : NXDN very narrow modeD : DMR mode

L1L2L3L4L5L6C1C2C3

C4C5H1H2H3H4H5H6

Button Function

Push Hold (1 second)

[+] Volume up Continuation up

[-] Volume down Continuation down

[ ] Adjustment value up Continuation up

[ ] Adjustment value down Continuation down

[ ] Auto adjustment start Output tone pattern change of balance adjustment (A change is possible only during balance adjustment.)

[ ] Wide 5k/Wide 4k/Narrow/NXDN/DMR

-

[ ] Shift to panel test mode -

[ ] To enter 5,9 or 17 reference level adjustments

-

[ ] Go to next adjustment item

Back to last adjustment item (At the time of 5, 9 or 17 point adjustment: Adjustment point change)

[ (AUX)] Writes the adjustmentvalue

-

[PTT](MIC)

Transmit

[0] to [9]and[#],[ ](MIC)

-

Tuning point Display RX (MHz) TX (MHz)

1 L1 400.05000 400.10000

2 L5 417.55000 417.60000

3 C3 435.05000 435.10000

4 H2 452.55000 452.60000

5 H6 469.95000 469.90000

Tuning point Display RX (MHz) TX (MHz)

1 L1 400.05000 400.10000

2 L3 408.85000 408.90000

3 L5 417.55000 417.60000

4 C1 426.35000 426.40000

5 C3 435.05000 435.10000

6 C5 443.85000 443.90000

Page 122: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-122 (No.RA054<Rev.001>)

VCO Assist

4.30.4 Adjustment item supplement

7 H2 452.55000 452.60000

8 H4 461.35000 461.40000

9 H6 469.95000 469.90000

Tuning point Display RX (MHz) TX (MHz)

1 L1 400.05000 400.10000

2 L2 404.45000 404.50000

3 L3 408.85000 408.90000

4 L4 413.25000 413.30000

5 L5 417.55000 417.60000

6 L6 421.95000 422.10000

7 C1 426.35000 426.40000

8 C2 430.75000 430.80000

9 C3 435.05000 435.10000

10 C4 439.45000 439.50000

11 C5 443.85000 443.90000

12 H1 448.25000 448.30000

13 H2 452.55000 452.60000

14 H3 456.95000 457.10000

15 H4 461.35000 461.40000

16 H5 465.75000 465.80000

17 H6 469.95000 469.90000

Adjustment Item Description

LCD Contrast The contrast of LCD display can be changed.

VCO Assist The lock voltage of VCO is adjusted.This item must be adjusted before receiver and transmitter adjustment items.

Frequency Frequency is adjusted under receivingcondition with SSG.The SSG needs 0.001ppm accuracy soplease use a standard oscillator if necessary.This item can be adjusted only in PC TestMode so that the adjustment value is notchanged easily.

RTC Correction Real Time Clock is adjusted.This item uses the internal clock.(Any measurement equipment is not required.)

Maximum Transmit Power

Maximum Transmit Power is adjusted.

High Transmit Power

High Transmit Power is adjusted.

Mid Transmit Power

Medium Transmit Power is adjusted.

Low Transmit Power

Low Transmit Power is adjusted.

Tuning point Display RX (MHz) TX (MHz)

Ramp Offset Adjust this item to the optimal Ramp voltage.

Balance The transmit modulation frequency response is adjusted.This item is adjusted so that the deviationof 2kHz becomes the same deviation of 20Hz.This item must be adjusted before all adjustment items for deviations are adjusted.

Maximum Deviation(Analog Wide 5k/Wide 4k/Narrow)

Maximum Deviation of Analog (Wide 5k/Wide 4k/Narrow) is adjusted.This item must be adjusted before all adjustment items for tone deviations are adjusted.

High Deviation NXDN/DMR high deviation is adjusted.

QT Deviation QT deviation is adjusted.

DQT Deviation DQT deviation is adjusted.

LTR Deviation LTR deviation is adjusted.

DTMF Deviation DTMF deviation is adjusted.

Single Tone Deviation

The deviation of Single Tone used in “2-tone” and “5-tone” is adjusted.

MSK Deviation MSK deviation is adjusted.

CW ID Deviation CWID tone deviation is adjusted.CWID is used to inform the others who istransmitting on a 6.25-kHz spacing channel.(In FCC rule, Analog mode or CWID isrequired for each channel-spacing.)

IQ Phase Correction of phase difference shift between I and Q.

RSSI Reference The minimum RSSI level for scan stop isadjusted.

Squelch Open The squelch level at level “1” is adjusted.

Squelch Tight The squelch level at level “9” is adjusted.

Low RSSI RSSI display level “ ” is adjusted.Both “Low RSSI” and “High RSSI” must beadjusted. (The curve data of RSSI level isapplied.)

High RSSI

Adjustment Item Description

Page 123: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-123

4.30.5 Adjustment item and Display

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide 5k)

AS(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

1 LCD Contrast CNTR - 1 point ADJ CommonSection 21~256

2 VCO Assist AST (CV voltage) - - 17 - - - CommonSection 31~4096

3 RTC Correction RTC - - CommonSection 5-2.00 ~ -0.01 ,0.00 ,+0.01 ~ +2.00

4 Maximum Transmit Power

MAX_P - - - 5 - - - TransmitterSection 11~256

5 High Transmit Power

H_PWR - - - 5 - - - TransmitterSection 21~1024

6 Medium Transmit Power

M_PWR - - - 5 - - - TransmitterSection 31~1024

7 Low Transmit Power

L_PWR - - - 5 - - - TransmitterSection 41~1024

8 Ramp Offset RAMP (ADC measurement value)

1 point ADJ TransmitterSection 51~1024

9 Balance BAL (Encode frequency) - - 9 - - - TransmitterSection 61~1024

10 Maximum Deviation

ADEV - 9 9 9 - - - TransmitterSection 71~1024

11 NXDN High Deviation

NDEV - - - - 9 9 - TransmitterSection 81~1024

12 DMR High Deviation

DDEV - - - - - - 9 TransmitterSection 91~1024

13 QT Deviation QT - 9 9 9 - - - TransmitterSection 101~1024

14 DQT Deviation DQT - 9 9 9 - - - TransmitterSection 111~1024

15 LTR Deviation LTR - 9 9 9 - - - TransmitterSection 121~1024

16 DTMF Deviation DTMF - 9 9 9 - - - TransmitterSection 131~1024

17 Single Tone Deviation

TONE - 9 9 9 - - - TransmitterSection 141~1024

18 MSK Deviation MSK - 9 9 9 - - - TransmitterSection 151~1024

19 CW ID Deviation CWID - - - 9 - - - TransmitterSection 161~1024

20 IQ Phase IQ (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 21~63

21 RSSI Reference 1 DSP (Receive)

RSSI1 (RSSI DSP(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

Page 124: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-124 (No.RA054<Rev.001>)

22 RSSI Reference 2 RF IC(Receive)

RSSI2 (RSSI RF IC(Receive) measurement value)

- - 5 - - - ReceiveSection 31~256

23 RSSI Reference 3 DSP (Standby)

RSSI3 (RSSI DSP (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

24 RSSI Reference 4 RF IC (Standby)

RSSI4 (RSSI RF IC (Standby) measurement value)

- - 5 - - - ReceiveSection 31~256

25 Squelch Open SQL (ASQDET measurement value)

5 5 5 5 5 5 ReceiveSection 41~256

26 Squelch Tight SQLT (ASQDET measurement value)

5 5 5 - - - ReceiveSection 51~256

27 Low RSSI LRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 61~256

28 High RSSI HRSSI (RSSI DSP (Receive) measurement value)

- - 5 - - - ReceiveSection 71~256

Order Adjusutmentitem

Main LCD

display

Sub LCD display

AW (Analog Wide 5k)

AS(Analog Wide 4k)

AN (Analog Narrow)

Nn (NXDN

Narrow)

Nv (NXDN Very

Narrow)

D (DMR)

Adjust item

Number

Adjustment range

Page 125: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-125

4.30.6 Panel tuning mode flow chartNote:

* In this Panel tuning mode flow chart, the Adjustment item name is modified.Panel Test Mode

[ ]hold

LCD Contrast

CNTR

level ecnerefer 9VCO Assist

stnemtsujdAAST

RTC Correction

RTC

Ramp Offset

RAMP

High Power Narrow 5 reference level

H_PWR An Adjustments

Medium Power Narrow 5 reference level

M_PWR An Adjustments

Low Power Narrow 5 reference level

L_PWR An Adjustments

Balance Narrow 9 reference level

BAL An Adjustments

9 reference level

Adjustments

9 reference level

Adjustments

NXDN High Deviation Narrow NXDN High Deviation VeryNarrow

NDEV Nn NDEV Nv

CW ID Deviation Narrow

CWID An

RSSI (Low) Narrow

nAISSRL

RSSI (High) Narrow

nAISSRH

Adjustment Item N/W/VN

LCD Display

For all adjustment items, press the [ ] button

to write the adjustment value.

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ] [ ]

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

9 reference level

Adjustments

[ ]

RSSI Referance 1

RSSI1[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]IQ Phase

IQ[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 2

RSSI2[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]RSSI Referance 3

RSSI3[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

5 reference level

Adjustments

[ ]

5 reference level

Adjustments

[ ]

RSSI Referance 4

RSSI4

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]

DMR High Deviation

DDEV

[ ]press [ ]hold

[ ]press [ ]hold

DMR

D

9 reference level

Adjustments

Analog Max Deviation Narrow Analog Max Deviation Wide4k Analog Max Deviation Wide5k

ADEV An ADEV As ADEV Aw

[ ]

[ ] [ ] [ ]

[ ] [ ]

[ ]press [ ]hold

Single Tone Deviation Narrow Single Tone Deviation Wide4k

TONE An TONE Aw[ ] [ ][ ]press [ ]hold

[ ]

MSK Deviation Narrow MSK Deviation Wide4k MSK Deviation Wide5k

MSK An MSK As MSK Aw9 reference levelAdjustments

[ ]

[ ]

QT Deviation Narrow QT Deviation Wide4k

sATQnATQ

DQT Deviation Narrow DQT Deviation Wide4k

DQT An DQT As

LTR Deviation Narrow LTR Deviation Wide4k

sARTLnARTL

DTMF Deviation Narrow DTMF Deviation Wide4k

DTMF An DTMF As

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]9 reference level

[ ]

QT Deviation Wide5k

QT Aw

9 reference levelAdjustments

[ ]

9 reference levelAdjustments

DQT Deviation Wide5k

DQT Aw9 reference levelAdjustments

LTR Deviation Wide5k

LTR Aw

DTMF Deviation Wide5k

DTMF Aw

Adjustments

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]press [ ]hold

[ ]

[ ]

[ ]

[ ]

[ ]

9 reference level

[ ]Single Tone Deviation Wide5k

TONE Aw

Adjustments[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]press [ ]hold

[ ]

Squelch (Open) Narrow Squelch (Open) Wide4k Squelch (Open) Wide5k Squelch (Open)

SQL An SQL As SQL Aw SQL

[ ]

[ ] [ ] [ ] [ ] [ ]

[ ] [ ] [ ] [ ]

[ ]

5 reference level

Adjustments

VeryNarrow

NvNarrow

Nn

Squelch (Open)

DMR

D

Squelch (Open)[ ]press [ ]hold

[ ]Squelch (Tight) Narrow Squelch (Tight) Wide4k Squelch (Tight) Wide5k

wATLQSsATLQSnATLQS

5 reference level

Adjustments

[ ] [ ] [ ]

[ ] [ ]

IQ Phase

RSSI Reference 1

RSSI Reference 2

RSSI Reference 3

RSSI Reference 4

Open Squelch

Low RSSI

High RSSI

Tight Squelch

VCO Assist

Maximum Deviation

NXDN High Deviation

DMR High DeviationQT Deviation

DQT Deviation

LTR Deviation

DTMF Deviation

Single Tone Deviation

MSK Deviation

CW ID Deviation

Balance

Adjustment Point

LCD Display

5 reference level

L1

L5

C3

H6

H2

Low 1

Adjustments

Low 5

Center 3

High 6

5 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]High 2 [ ]

[ ]

[ ]

High Transmit Power

Medium Transmit Power

Low Transmit Power

Adjustment Point

LCD Display

9 reference level

L1

L3

L5

H6

C1

C3

C5

H2

H4

Low 1

Adjustments

Low 3

Low 5

High 6

9 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]Center 1 [ ]

[ ]

Center 3

Center 5

[ ]

[ ][ ]

[ ]High 2 [ ]

[ ]

High 4 [ ]

[ ]

[ ]

Adjustment Point

LCD Display

17 reference level

L1

L2

L3

L4

L5

L6

C1

C2

C3

C4

C5

H1

H2

H3

H4

H5

H6

Low 1

Adjustments

Low 2

Low 3

17 reference level

Adjustments exit

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]Low 4 [ ]

[ ]

Low 5

Low 6

[ ]

[ ][ ]

[ ]Center 1 [ ]

[ ]

Center 2 [ ]

[ ]

Center 3 [ ]

[ ]

Center 4 [ ]

[ ]

Center 5 [ ]

[ ]

High 1 [ ]

[ ]

High 2 [ ]

[ ]

High 3 [ ]

[ ]

High 4 [ ]

[ ]

High 5 [ ]

[ ]

High 6 [ ]

[ ]

[ ]press [ ]hold

Max PowerMAX_P

[ ]press [ ]hold

5 reference level

Adjustments

Narrow

An

[ ]

Maximum Transmit Power

Page 126: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-126 (No.RA054<Rev.001>)

4.31 Adjustment points

TX-RX UNIT (XC1-183)Component Side

4.32 Test Equipment Required for Alignment

*The test equipment which is not used for adjustment is contained in this table.

RTC (CN55)

RT

C

Test Equipment Major Specifications

1. Standard Signal Generator (SSG)

Frequency RangeModulation Output

100 to 900MHzFrequency modulation and external modulation-127dBm/0.1uV to greater than -20dBm/22.4mV

When performing the Frequency adjustment, the following accuracy is necessary.• 0.001ppmUse a standard oscillator for adjustments, if necessary.

2. Power Meter Input ImpedanceOperation FrequencyMeasurement Capability

50ohm100 to 900MHzVicinity of 100W

3. Deviation Meter Frequency Range 100 to 900MHz

4. Digital Volt Meter (DVM)

Measuring RangeInput Impedance

10mV to 20V DCHigh input impedance for minimum circuit loading

5. Oscilloscope DC through 30MHz

6. Frequency Counter Frequency RangeFrequency Stability

10Hz to 1000MHz0.2ppm or less

To measure the oscillating frequency of the internal clock 32766.00Hz~32770.00Hz forRTC Correction Resolution 0.01Hz is better for accuracy adjustment.

7. Ammeter 20A or more

8. AF Volt Meter (AF VM) Frequency RangeVoltage Range

50Hz to 10kHz1mV to 10V

9. Audio Generator (AG) Frequency RangeOutput

50Hz to 5kHz or more0 to 1V

10. Distortion Meter CapabilityInput Level

3% or less at 1kHz50mV to 10Vrms

11. Spectrum Analyzer Measuring Range DC to 1GHz or more

12. 4ohm Dummy Load Approx. 4ohm, 10W

13. Regulated Power Supply 13.2V, approx. 20A (adjustable from 9V to 17V)Useful if ammeter equipped

Page 127: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-127

Test cable for microphone input (E30-3360-28) MIC connector (Front panel view)

Tuning cable (E30-7754-05)Adapter cable (E30-7754-05) is required for injecting an audioif PC tuning is used.See “PC Mode” section for the connection.

4.33 Radio check Section

3

2

4

5

6

7

8

3

1

2

4

5

6

7

8

1GREEN

RED

BLACK

BLUE

SHIELD

WHITE

GRAY

YELLOW

PTT

E

MIC-E

MIC

HK

1 : BLC

2 : +B

3 : GND

4 : PTT/TXD (PC serial data from radio)

5 : MICE

6 : MIC

7 : HOOK/RXD (PC serial data to radio)

8 : DM

1

8

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Frequency check

1)CH-Sig: 1-1PTT: ON

1)Test ChannelChannel: 1Test Signaling Mode: AnalogSignaling: 1PTT: Press [Transmit] button.

f. counter Panel ANT Check an internal temperature of radio from 20°C to 33°C.

±0.25ppm±[email protected]

2. High power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Mode: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 21W~29W10A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Mode: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Mode: AnalogSignaling: 1PTT: Press [Transmit] button.

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1-128 (No.RA054<Rev.001>)

3. Low power check

1)CH-Sig: 1-1PTT: ONTA: OFF

1)Test ChannelChannel: 1Test Signaling Mode: AnalogSignaling: 1PTT: Press [Transmit] button.

Power meterAmmeter

Panel ANT Check 3.5W~6.5W7.0A or less

2)CH-Sig: 2-1PTT: ONTA: OFF

2)Test ChannelChannel: 2Test Signaling Mode: AnalogSignaling: 1PTT: Press [Transmit] button.

3)CH-Sig: 3-1PTT: ONTA: OFF

3)Test ChannelChannel: 3Test Signaling Mode: AnalogSignaling: 1PTT: Press [Transmit] button.

4. MIC sensitivity check

1)CH-Sig: 1-1AG: 1kHzPTT: ON

1)Test ChannelChannel: 1Test Signaling Mode: AnalogSignaling: 1AG: 1kHzPTT: Press [Transmit] button.

DeviationmeterOscilloscopeAGAF VM

Panel ANTMIC jack

Adjust AGinput to get astandardMOD.

5mV ±1mV

5. Sensitivitycheck

1)CH-Sig: 1-1SSG outputWide 5k: -117dBm(0.32μV)(MOD: 1kHz/±3kHz)Wide 4k:-117dBm (0.32μV)(MOD: 1kHz/±2.4kHz)Narrow: -117dBm (0.32μV)(MOD: 1kHz/±1.5kHz)

1)Test ChannelChannel: 1Test Signaling Mode: AnalogSignaling: 1SSG outputWide 5k: -117dBm (0.32μV)(MOD: 1kHz/±3kHz)Wide 4k:-117dBm (0.32μV)(MOD: 1kHz/±2.4kHz)Narrow: -117dBm (0.32μV)(MOD: 1kHz/±1.5kHz)

SSGAF VMOscilloscopeDistortionmeter4ohmDummy load

Panel ANTExt. SPconnector

Check 12dB SINAD or more

Item Condition Measurement Adjustment Specifications/RemarksPanel test

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 129: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-129

4.34 Common Section

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Setting

1) DC voltage:13.2V2) SSG standard modulation

[Wide 5k] MOD:1kHz,DEV:3kHz[Wide 4k] MOD:1kHz,DEV:2.4kHz[Narrow] MOD:1kHz,DEV:1.5kHz

2.LCD Contrast

1) Adj item[CNTR]Adjust:[****]

Press [ ] button to store the adjustment value.

1) Adj item[LCD Contrast]Data: [****]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.

280 (Reference value)

3. VCO Assist

1) Adj item:[AST]Adjust:[****]

2) Adj item:[L1]→[L2]→[L3]→[L4]→[L5]→[L6]→[C1]→[C2]→[C3]→[C4]→[C5]→[H1]→[H2]→[H3]→[H4]→[H5]→[H6]

Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [VCO Assist]

2) Adj item:[Low1],[Low2], [Low3],[Low4],[Low5], [Low6][Center1], [Center2], [Center3], [Center4], [Center5], [High1],[High2][High3],[High4],[High5][High6]

Press [Apply] button to store the adjustment value.

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment][V] Indicator on the PC window shows VCO lock voltage. Change the adjustment value to get VCO lock voltage within the limit of the specified voltage.

Note:Confirm the VCO lock voltage approximately 3 seconds after the adjustment value is changed.

2.5V±0.1V[Automatic Adjustment]After the automatic adjustment is performed, verify that the VCO lock voltage is within the voltage range which is specified by the manual adjustment.[Manual Adjustment]Press [Apply] button to store the adjustment value after all adjustment points have been adjusted.Adjustment value range:500 - 1950

Page 130: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-130 (No.RA054<Rev.001>)

4. Frequency

*The Frequency adjustment can be performed only in PC test mode.

1) Adj item: [Frequency]SSG output: -20dBm (22.4mV) (CW (without modulation))

Caution:Perform the frequency adjustment under the following conditions.

• Temperature range of +20°C to +33°C (+68.0°F to +91.4°F).(The temperature is displayed on the Frequency adjustment screen of the KPG-D3/D3N and the LCD of the transceiver.)

• Use an accuracy of 0.001ppm for the SSG. (Use a standard oscillator if necessary.)

SSG Panel ANT [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode]Press [Start] button of “Auto Tuning”. Press [Apply] button to store the adjustment value after the automatic adjustment has finished.

[PC test mode]“IF20” value = Within 0±30 digits. The value of “IF20” will become around “0” after the adjustment has finished.

Remark:“Frequency” is adjusted under receiving condition with SSG.

5. RTC Correciton

1) Adj item:[RTC]Adjust:[****]Press [ ] button to store the adjustment value.

1) Adj item: [RTC Correction]Data: [****]Press [Apply] button to store the adjustment value.

Frequency Counter

TX-RX

TESTPOINT(CN55)

Remark:The adjustment value should input the display of a Frequency Counter.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 131: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-131

4.35 Transmitter Section

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. Maximum Transmit Power

1) Adj item:[MAX_P]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maximum Transmit Power]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

57.5W ±2.5W 15A or less

2. High Transmit power

1) Adj item:[H_PWR]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [High Transmit Power]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

25W ±1W10A or less

3. Low Transmit power

1) Adj item:[L_PWR]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Low Transmit Power]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

5W ±0.5W7A or less

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1-132 (No.RA054<Rev.001>)

4.Ramp Offset

1)Adj item:[RAMP]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Ramp Offset]Press [Autotune(TX starts)] button. Press [Apply] button to store the adjustment value.

Power meterAmmeter

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]1) Press [Autotune(TX

starts)] button.2) Press [Apply] button

to store the adjustment value after the automatic adjustment has finished.

3) Check Ramp Offset Monitor Value Over 50.

[Manual Adjustment]1) Set the adjustment

value to "1".2) Press [Transmit]

button and increase the adjustment value slowly while monitoring the offset monitor value.

3) Set the adjustment value when the offset monitor value exceed "60".

5. Balance

1) Adj item: [An BAL]Adjust:[****]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Balance]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

The Deviation of 20Hz frequency is fixed.Change the 2kHz adjustment value to become the same deviation of 20Hz within the specified range.[Panel tuning mode]PTT:ONWhile PTT:ON, press the [] button to change the 20Hz/2kHz.[PC test mode]PTT: Press [Transmit] button.While PTT:ON, click the check box "2kHz Sine Wave" to change the 20Hz/2kHz.

2kHz Tone deviation is within ± 1.0% of 20Hz tone deviation.

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 133: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-133

6. Maximum Deviation

[Analog Wide 5k]

1) Adj item: [Aw ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2V]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the deviation is between 4150Hz and 4250Hz.Deviation meterLPF: 15kHzHPF: OFF

496(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

4150~4250Hz

[Analog Wide 4k]

1) Adj item: [As ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2V]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the deviation is between 3310Hz and 3410Hz.Deviation meterLPF: 15kHzHPF: OFF

496(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

3310~3410Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 134: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-134 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An ADEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Maxmum Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the deviation is between 2050Hz and 2150Hz.Deviation meterLPF: 15kHzHPF: OFF

493(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2050~2150Hz

7. NXDN High Deviation[NXDN Narrow]

1) Adj item: [Nn NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the Analog deviation is between 2995Hz and 3117Hz.Deviation meterLPF: 3kHzHPF: OFF

498(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2995~3117Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 135: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-135

[NXDN Very Narrow]

1) Adj item: [Nv NDEV]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [NXDN High Deviation (NXDN Very Narrow]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the Analog deviation is between 1331Hz 1311Hz and 1363Hz.Deviation meterLPF: 3kHzHPF: OFF

498(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

1311~1363Hz

8. DMR High Deviation

1) Adj item: [D DDEV]Adjust: [****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DMR High Deviation (DMR Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write fixed value for each adjustment point. (The value is written below.) Transmit at each adjustment point and check that the Analog deviation is between 2695Hz and 2803Hz.Deviation meterLPF: 3kHzHPF: OFF

496(Reference value)

[Panel tuning mode]PTT: ON

[PC test mode]PTT: Press [Transmit] button

2695~2803Hz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 136: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-136 (No.RA054<Rev.001>)

9. QT Deviation

[Analog Wide 5k]

1) Adj item: [Aw QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Wide 5k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.529(Reference value)

0.75kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Wide 4k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.529(Reference value)

0.60kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 137: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-137

[Analog Narrow]

1) Adj item: [An QT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [QT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.529(Reference value)

0.35kHz±0.05kHz

10. DQT Deviation

[Analog Wide 5k]

1) Adj item: [Aw DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Wide 5k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.426(Reference value)

0.75kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 138: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-138 (No.RA054<Rev.001>)

[Analog Wide 4k]

1) Adj item: [As DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Wide 4k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.426(Reference value)

0.60kHz±0.05kHz

[Analog Narrow]

1) Adj item: [An DQT]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DQT Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.426(Reference value)

0.35kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 139: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-139

11. LTR Deviation

[Analog Wide 5k]

1) Adj item: [Aw LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Wide 5k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.518(Reference value)

1.00kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Wide 4k)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.518(Reference value)

0.90kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 140: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-140 (No.RA054<Rev.001>)

[Analog Narrow]

1) Adj item: [An LTR]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [LTR Deviation (Analog Narrow)]Deviation meterLPF: 3kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.518(Reference value)

0.75kHz±0.05kHz

12. DTMF Deviation

[Analog Wide 5k]

1) Adj item: [Aw DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.542(Reference value)

2.50kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 141: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-141

[Analog Wide 4k]

1) Adj item: [As DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.542(Reference value)

2.00kHz±0.05kHz

[Analog Narrow]

1) Adj item: [An DTMF]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [DTMF Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.542(Reference value)

1.25kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 142: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-142 (No.RA054<Rev.001>)

13. Single Tone Deviation

[Analog Wide 5k]

1) Adj item: [Aw TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.511(Reference value)

3.00kHz±0.05kHz

[Analog Wide 4k]

1) Adj item: [As TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.511(Reference value)

2.40kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 143: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-143

[Analog Narrow]

1) Adj item: [An TONE]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [Single Tone Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.511(Reference value)

1.50kHz±0.05kHz

14. MSK Deviation

[Analog Wide 5k]

1) Adj item: [Aw MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Wide 5k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.500(Reference value)

3.00kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

Page 144: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-144 (No.RA054<Rev.001>)

[Analog Wide 4k]

1) Adj item: [As MSK]Adjust:[****][L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Wide 4k)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.500(Reference value)

2.40kHz±0.05kHz

[Analog Narrow]

1) Adj item: [An MSK]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [MSK Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.500(Reference value)

1.50kHz±0.05kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-145

15. CWID Deviation

[Analog Narrow]

1) Adj item: [An CWID]Adjust:[****]

2) Adj item:[L1]→[L3]→[L5]→[C1]→[C3]→[C5]→[H2]→[H4]→[H6]Adjust:[****]PTT : ONPress [ ] button to store the adjustment value.

1) Adj item: [CWID Deviation (Analog Narrow)]Deviation meterLPF: 15kHzHPF: OFF

2) Adj item:[Low1]→[Low3]→[Low5]→[Center1]→[Center3]→[Center5]→[High2]→[High4]→[High6]Press [Transmit] button.Press [Apply] button to store the adjustment value.

Deviation meterOscilloscope

Panel ANT Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Write the value as followings.508(Reference value)

1.10kHz±0.10kHz

Item Condition Measurement Adjustment Specifications/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-146 (No.RA054<Rev.001>)

4.35.1 Necessary Deviation adjustment item for each signaling and modeThe following shows the necessary adjustment items for each signaling deviation. Please read the following table like the followingexample. In the case of the signaling "QT (Analog Wide 5k)", this signaling is composed of three elements [Balance, MaximumDeviation (Analog Wide 5k) and QT Deviation (Analog Wide 5k)]. Please adjust Balance and Maximum Deviation (Analog Wide 5k)before adjusting QT Deviation (Analog Wide 5k).

• Balance is common with all the above deviation adjustments. If Balance (Transmitter Section 6) has already adjusted, please skipStep1 and adjust from Step2.

• Maximum Deviation (Analog Wide 5k/Wide 4k/Narrow) is common with all the analog signaling deviations and CWID Deviation(NXDN Very Narrow).If Balance and Maximum Deviation (Analog Wide 5k/Wide 4k /Narrow) (Transmitter Section 7) have already adjusted, please skipStep2 and adjust from Step3.

Mode Signaling Necessary adjustment and order

Wide 5k Wide 4k Narrow Very Narrow

Analog Audio 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]

-

QT 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. QT Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. QT Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. QT Deviation

[Analog Narrow]

-

DQT 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. DQT Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. DQT Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DQT Deviation

[Analog Narrow]

-

LTR 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. LTR Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. LTR Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. LTR Deviation

[Analog Narrow]

-

DTMF 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. DTMF Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. DTMF Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. DTMF Deviation

[Analog Narrow]

-

5TONE 1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. Single Tone Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. Single Tone Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. Single Tone Deviation

[Analog Narrow]

-

MSK(Fleetsync)

1. Balance adjust2. Maximum Deviation

[Analog Wide 5k]3. MSK Deviation

[Analog Wide 5k]

1. Balance adjust2. Maximum Deviation

[Analog Wide 4k]3. MSK Deviation

[Analog Wide 4k]

1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. MSK Deviation

[Analog Narrow]

-

NXDN Audio - - 1. Balance adjust2. NXDN High Deviation

[NXDN Narrow]

1. Balance adjust2. NXDN High

Deviation [NXDN Very Narrow]

CWID - - - 1. Balance adjust2. Maximum Deviation

[Analog Narrow]3. CWID Deviation

[Analog Narrow]

DMR Audio - - 1. Balance adjust2. DMR High Deviation

-

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(No.RA054<Rev.001>)1-147

4.36 Receiver Section

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

1. AF level setting

[Panel test mode]1) CH-Sig: 1-1

SSG output: -47dBm (1mV)(MOD: 1kHz/±1.5kHz)

1) Test ChannelChannel: 1Test Signaling Type: AnalogSignaling: 1SSG output: -47dBm (1mV) (MOD:1kHz/±1.5kHz)

SSGDVMAF VMDummy load

Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

Volume Up/Down knob to obtain 1.41V AF output.(0.5W @ 4ohm load)

1.41V±0.1V

2. IQ Phase

1) Adj item: [An IQ]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

1) Adj item: [IQ Phase]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output:Freq: Tune Freq +8kHzlevel: -53dBm (500μV)(MOD:OFF)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode] [], [][PC test mode][+], [-]

[PC test mode][Automatic Adjustment]After input signal from SSG,1) Press [Autotune] button.2) Press [Apply] button to store the adjustment value after the automatic adjustment has finished.[Manual Adjustment]Adjust RSSI Level(DSP Normal Power Mode)Value to the minimum.

3. RSSI reference [DSP (Receive)]

1) Adj item: [An RSSI 1]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 1 DSP (Receive)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Receive)]

1) Adj item: [An RSSI 2]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 2 RF IC (Receive)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

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1-148 (No.RA054<Rev.001>)

[DSP (Standby)]

1) Adj item: [An RSSI 3]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 3 DSP (Standby)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[RF IC (Standby)]

1) Adj item: [An RSSI 4]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [RSSI Reference (Analog Narrow) 4 RF IC (Standby)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG, 1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

4. Squelch Open

[Analog Wide 5k]

1) Adj item: [Aw SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Open (Analog Wide 5k)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-149

[Analog Wide 4k]

1) Adj item: [As SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±2.4kHz)

1) Adj item: [Squelch Open (Analog Wide 4k)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±2.4kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[Analog Narrow]

1) Adj item: [An SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Open (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level -3dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[NXDN Narrow]

1) Adj item: [Nn SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level at Analog Narrow -5dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-150 (No.RA054<Rev.001>)

[NXDN Very Narrow]

1) Adj item: [Nv SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

1) Adj item: [Squelch Open (NXDN Very Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level at Analog Narrow -2dB(MOD: 400Hz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[DMR] 1) Adj item: [D SQL]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

1) Adj item: [Squelch Open (DMR)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level at Analog Narrow -4dB(MOD: 400Hz/±1.8kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

5. Squelch Tight

[Analog Wide 5k]

1) Adj item: [Aw SQLT]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

1) Adj item: [Squelch Tight (Analog Wide 5k)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±3kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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(No.RA054<Rev.001>)1-151

[Analog Wide 4k]

1) Adj item: [As SQLT]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±2.4kHz)

1) Adj item: [Squelch Tight (Analog Wide 4k)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±2.4kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

[Analog Narrow]

1) Adj item: [An SQLT]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

1) Adj item: [Squelch Tight (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: 12dB SINAD level +6dB (MOD: 1kHz/±1.5kHz)

SSGDistortion meterOscilloscope

Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

6. Low RSSI

1) Adj item: [An LRSSI]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [Low RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: -118dBm (0.28μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

7. High RSSI

1) Adj item: [An HRSSI]Adjust:[****]

2) Adj item:[L1]→[L5]→[C3]→[H2]→[H6]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

1) Adj item: [High RSSI (Analog Narrow)]

2) Adj item:[Low1]→[Low5]→[Center3]→[High2]→[High6]SSG output: -80dBm (22.4μV) (MOD: 1kHz/±1.5kHz)

SSG Panel ANTExt. SP connector

Panel [Panel tuning mode]After input signal from SSG, press [ ] button to store the adjustment value.

[PC test mode]After input signal from SSG,1) Press [Acquire Monitored Value] button.2) Press [Apply] button to store the adjustment value.

Item Condition Measurement Adjustment Specifications

/RemarksPanel tuning

modePC test mode Test-

equipmentUnit Terminal Unit Parts Method

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1-152 (No.RA054<Rev.001>)

SECTION 5TROUBLESHOOTING

5.1 Fault Diagnosis of the BGA (Ball Grid Array) IC

OverviewA flowchart for determining whether or not the transceiver can be powered on (the LCD does not function even if the power switch isturned on) due to broken BGA parts.

BGA partsMPU/DSP(IC404), mobile DDR(IC402), Flash Memory(IC401)When the BGA IC is problematic, please bring the printed circuit board (XCA-033K-00/XCA-033E-01/XCA-034K-00/XCA-034K-01/XCA-034E-01) in for service. Various ESN/ default adjustment values are written on the printed cicuit board for service.Additionally various ESN stickers are included. (Please refer to "5.4 Replacing TX-RX Unit".)After the printed circuit board has been readjusted, please attach any ESN stickers to the chassis. When "ESN Validation" is used,youmust modify the ESN register.

Checking power supply voltage

Checking voltage

Points to be checked

Points to be checked

Points to be checked

Points to be checked Confirmed voltage

/IGN_OUT IC22(9pin) ON: 0V

OFF: 0V 3.1V

The ignition key is kept ON.

Points to be checked Confirmed voltage

/PSW_OUT IC22(15pin) ON: 0V

OFF: 0V 3.1V

Normal voltage

Normal voltage

1.2V

19.2MHz

12M C401.8V 18M C573.2V

1.8V3.1V

32M IC20(5pin)1.8V18M_3 IC21(1pin)

Power supply of each device is connected through the coil.[MPU/DSP]12M: L405, L406, L40818M: L410, L41132M: L412

[mobile DDR]18M: L403

[Flash Memory]

32M: L401

18M_3: L413

Checking the clock

Checking the clock

Normal voltage (1.2V)

19.2MHzMPU/DSP side R424

Pass

Pass

Pass

Pass

Checking the Reset/Control signal

Checking the control signal input to the MPU/DSP

/RST D14(Anode side)/BINT2 CN17

The POWER key is pressed and held.

Checking the MPU/DSP input switch signal

The BGA parts are not broken.

The BGA parts are not broken.

Checking for an abnormal point

12M has an abnormal voltage.[MPU/DSP]Remove L405 and L406 and L408 to check the

voltage of the 12M.

If the voltage becomes normal, the MPU/DSP is

broken.

Note: IC24(12M DC/DC Converter Device) is

fragile in the scratch.

Be careful when you touch this parts.

[MPU/DSP]

Check the peripheral circuit of IC2.*2

Fail

Fail

Fail

Fail

/OVRB_OUT IC22(12pin) 3.1V

Remove L410 and L411 to check the voltage

of the 18M.

If the voltage becomes normal, the MPU/DSP

is broken.

[mobile DDR]

Remove L403 to check the voltage of the 18M.

If the voltage becomes normal, the mobile DDR

is broken.

32M has an abnormal voltage.

[MPU/DSP]

Remove L412 to check the voltage of the 32M.

If the voltage becomes normal, the MPU/DSP

is broken.

[Flash Memory]

Remove L401 to check the voltage of the 32M.

If the voltage becomes normal, Flash memory

is broken.

If the voltage is not corrected, there is a problem

other than the BGA parts.*1

18M_3 has an abnormal voltage.

[Flash memory]

Remove L413 to check the voltage of the 18M_3.

If the voltage becomes normal, Flash memory is

broken.

18M has an abnormal voltage.

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(No.RA054<Rev.001>)1-153

Checking the output signal

from the MPU/DSP.

Fail

Fail

Fail

Pass

Points to be checked Normal voltageSBC MPU/DSP side R62 3.2V

Remove R62 to check the voltage of the SBC.

If the MPU/DSP side is 0V,

the MPU/DSP or Flash memory or mobile DDR

may be broken.

Fail

Fail

Fail

Pass

Pass

Pass

Pass

The LCD displays control

The LCD displays control

It is unlikely that the BGA parts are broken.

Points to be checked Normal voltagePRST

D410(Cathode side)

3.2V

Points to be checked Normal voltage

/FRST

D401(Anode side)

Points to be checked Normal voltage

/CS_LCD CP412(8pin)

After power-on,

and

1.8V fixed later

1.8V 0V 1.8V,

After power-on,

and

/CS_LCD has an abnormal voltage.

Check each of the following items.

Check to see the terminal of L419 and CP412.

Remove the FFC of TX-RX unit between

Sub (Display) Unit.

As a result, if the abnormality yet, the MPU/DSP or

Flash memory or mobile DDR may be broken.

Remove Q403.

If the MPU/DSP side is 3.2V, the MPU/DSP or Flash

memory or mobile DDR may be broken.

Points to be checked Normal voltage54M C520

18M C519

32M C511

5.36V

1.8V

3.2V

The BGA parts are not broken.

Remove the FFC of TX-RX unit between Sub

(Display) unit.

If the voltage becomes normal, the FFC or Sub

(Display) unit is broken.

The LCD display “INIT ERROR 1”.An error occurs when the mobile DDR internal

RAM reads or writes.

The mobile DDR may be broken.

Check the flowchart from beginning.

1) /RST : MPU/DSP reset signal LOW Reset

2) /BINT : Battery final voltage monitoring LOW Final voltage

3) /OVRB_OUT : Battery overvoltage monitoring LOW Overvoltage

4) /PSW_OUT : Power switch signal LOW ON

5) /IGN_OUT : Ignition switch signal LOW ON

6) /FRST : Flash Memory reset signal HIGH Reset

7) /CS_F : Flash Memory chip select signal LOW Active

10) /CS_LCD : LCD controller chip select signal LOW Active

9) PRST : LCD reset signal HIGH Reset

8) SBC : Switch +B control HIGH ON

1.8V

1.8V fixed later

Checking the control signal output from the MPU/DSP

Remove D401 to check the voltage of Flash memory

side R433.

If the voltage becomes abnormal, Flash memory is

broken.

If the /FRST is always 0V, the MPU/DSP is broken.

Pass

Points to be checked Normal voltage

/CS_F IC403(4pin)

If the IC403 (1pin) is 0V or 1.8V,

the MPU/DSP may be broken.

If the IC403 (2pin) is 0V or 1.8V,

the MPU/DSP or Flash memory may be broken.

1.8V 0V 1.8V,

Pass

When an error display appears on the LCD

Descriptions of signal names

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1-154 (No.RA054<Rev.001>)

Checking the operation of the MSP430When VIN of 54M

is 0V.

Pass

Pass

Check that the signal BAT_CNT

of MSP430(IC22 - 7pin) outputs High(3.1V). 54M(IC25) or its peripheral circuit is broken.

Fail

Fail

Pass

When the signal /OVRB_OUT has an abnormal outputs,

check that the /OVRB(IC22 - 2pin) is High(3.1V) in the

deck powered on.

MSP430 or its peripheral circuit is broken.

MSP430 is broken.

Checking the operation of MSP430 (/OVRB_OUT)

Pass

Fail

When the signal /RST(IC22 - 14pin) has an

abnormal output, check that the analog voltage of

/RST(IC22 - 6pin) is normal.(typically 2.7V.

Minimum detection voltage is 2.0V.).

MSP430 is broken.

MSP430, 54M(IC25) or its peripheral circuit of is

broken.

Pass

Fail

Check that the analog voltage

of /BINT(IC22 - 5pin) is normal(typically 2.6V.

Operating voltage range is 1.6V~3.0V).

MSP430 is broken.

Pass

Pass

Checking the operation of the MSP430 (/RST)

Checking the operation of MSP430 (/BINT)

Check that the voltage of VIN of 54M(IC25 - 8pin)

is 13.6V.

Standard Voltage/Operating Voltage range

K Type 13.6V/13.6 15%

E type 13.2V/10.8V~15.6V.

Set the supply voltage within the operating voltage

range. If set correctly, MSP430 or its peripheral

circuit is broken.

Set the supply voltage within the operating voltage

range. if set correctly, 54M(IC25) or its peripheral

circuit is broken.

When the signal /BINT(IC22 - 13pin) has an abnormal

outputs, check that the signal /RST(IC22 - 14pin) has

correct output.

MSP430 or its peripheral circuit of is broken.

Check the voltage (13.6V[operating voltage range])

at both ends of F1(fuse). If F1 is broken, replace the

F1 with a new one. If F1 is not broken, 54M(IC25) or

its peripheral circuit is broken.

Fail

Check that the voltage of DVCC of MSP430(IC22 - 1pin)

is 3.1V.

MSP430, 31BU, 50BU or one of these peripheral

circuit is broken.

When VIN of 54M is

out of operating

voltage range.

If 12M, 18M or 32M has still an abnormal voltage after the implementation of each procedure above,

54M(IC25),12M(IC24),18M(IC12),32M(IC20) or one of these peripheral circuit is broken.

54M(normally 5.4V at L13) has an abnormal voltage, check the MSP430(IC22) according to the following procedure.

*1

*2

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(No.RA054<Rev.001>)1-155

When /IGN is 0V and

/IGN_OUT is not 0V.

When both /IGN and

/IGN_OUT are not 0V.

When the ignition sense has 13.6V(set within the

operating voltage range), check that the signal

/IGN and IGN_OUT are 0V.

MSP430 is broken.

MSP430 or the circuit of the signal /IGN is broken.

If the ignition function is enabled,

check that the signal /IGN(IC22 - 8pin) and /IGN_OUT(IC22 - 9pin) are linked with the ignition sense.

When /PSW is linked

and /PSW_OUT is not

linked with the power button.

When both /PSW and /PSW_OUT are

not linked with the power button.

Check that the signal /PSW and /PSW_OUT are 0V

during the power button is pressed.MSP430 is broken.

MSP430 or the circuit of the signal /PSW is broken.

Check that the signal /PSW(IC22 - 10pin) and /PSW_OUT(IC22 - 15pin) are linked

with the power button on KCH-19 in power on state.

Checking the operation of MSP430 (/PSW and /IGN)

A. When MSP430(IC22) is replaced, IC22 must be replaced to "MSP430G25KGCA"(This MSP430 is written the program.).

B. OMAP communicates with MSP430 by serial communication at startup of deck.

Only firmware version of MSP430 is confirmed by OMAP in serial communication.

Even when firmware version of MSP430 can not be acquired, the system of MSP430 is started.

C. If there is the difference of firmware version of MSP430 between MSP430 and OMAP,

the firmware version of MSP430 is updated with the serial communication by OMAP.

"WAIT..." is displayed on the LCD during the firmware update. When the firmware update fails,

the system of MSP430 is started and OMAP is trying to update again at next startup.

Remarks related to MSP430

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1-156 (No.RA054<Rev.001>)

5.2 Failure diagnosis of the GPS section (GPS model only)

Overview:When the GPS function does not operate, use this flowchart to determine the problem.

Fail

Pass

Pass

MPU/DSP

IC

Level

Conversion

IC

Level

Conversion

IC

TCXO

19.2MHz

BT/GPS

IC

RF

Matching

SAW

Filter

GPS

Antenna

Bias

32.768KHz

Clock

GPS Antenna unitL9IC5IC6

Coaxial

cableX2X1

IC7

IC404

UART

PCM

UART

TX-RX UNIT

BT/GPS UNIT

CN5

PCM PCM

UART

Major parts for a GPS circuit

• Coaxial cable: E0E-0003-00

• GPS active antenna: KRA-40 (option)

• SAW Filter (L9)

• Bluetooth/GPS IC (IC5)

• Level conversion IC (IC6, IC7)

• TCXO 19.2MHz (X1)

• 32.768 kHz clock (X2)

• 33BT Regulator (IC3)

• 18BT Regulator (IC2)

• 33GPS Regulator (IC4)

• MPU/DSP IC (IC404)

Positioning is not carried out normally.

Power is not supplied to the KRA-40. When the power supply is turned ON, Displayed

“GPS ANT FAIL” is displayed

Not displayed

Fail Verify the connection of KRA-40.

(SMA connector)

Pass

Verify the connection of the SMA

connecting cable.

CN5 – E0E-0003-00

Pass

Fail

Check the BT/GPS UNIT PCB side A.

FailConnect the KRA-40

correctly.

Connect the cable to

the CN5 correctly.

Check the BT/GPS UNIT PCB side B.

CN5 – E0E-0003-00

Verify the connection of the SMA

connecting cable.

Verify the connection of KRA-40.

(SMA connector)

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(No.RA054<Rev.001>)1-157

Pass

Check the BT/GPS UNIT PCB side A.

Pass

Verify the BT/GPS power Fail

supply.

(33BT) L4: 3.3V

Pass

Verify the BT/GPS power

supply.

(18BT) L5: 1.8V

Pass

Fail

FailVerify the RTC for the

BT/GPS.

X2 (3 pin): Square waveform,

32.768 kHz, 1.8Vp-p

Pass

Fail

Verify the reference clock for

the BT/GPS.

(BT_CLK) Intersection of C8

and C9: Sine waveform,

19.2MHz, 0.2 to 1.2 Vp-p

Pass

Check the BT/GPS UNIT PCB side B.

Check the BT/GPS UNIT PCB side B.

Pass

Fail

Fail

[The BT/GPS power supply

line 33BT circuit is faulty]

Verify the PCB side A parts.

L4, C15, C19, C20, C33

Replace any abnormal parts.

[The BT/GPS power supply

line 18BT circuit is faulty]

Verify the PCB side A parts.

C18, C13, C31, L8, C39

Replace any abnormal parts.

Check the BT/GPS UNIT

PCB side B (a).

Check the BT/GPS UNIT

PCB side B (b).

Verify the RTC line circuit for

the BT/GPS.

X2, L8, C39

Replace any abnormal parts.

[The reference clock circuit

for the BT/GPS is faulty]

Verify the R9, Q1, R10, R26,

R12, R13, X1, C4, C8, C9

Replace any abnormal parts.

Fail Verify the BT/GPS power

supply.

(33GPS) L6: 3.3V

Fail

Fail

Verify the power supply voltage

after removing the KRA-40.

(33GPS) L6:3.3V

[The BT/GPS power supply

line 33GPS circuit is faulty]

C7, C23, C24, R15, C25, R16,

R19, C26, C27, C29, L2, R14,

C3

Replace any abnormal parts.

[The KRA-40 may be

broken]

Replace the KRA-40

[The BT/GPS IC is

abnormal]

Replace the PCB.

[The GPS RF input circuit is faulty]

Replace the GPS RF input circuit

parts. (only the parts which can be

replaced) If any unexchangeable

parts are abnormal, replace the PCB.

Fail

Verify the RF input circuit for the GPS.

SAW, GPS IC RF Matching

From connecter to SAW: CN5, C40, R24, R23

SAW parts: L9, D17, D18

GPS IC RF Matching parts: C38, C36, L7

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1-158 (No.RA054<Rev.001>)

Pass

Pass

Pass

Pass

Pass

Pass

Fail

Verify the BT/GPS control

signal

(BTFM_nSHUTDoWN).

IC1 (5pin): 1.8V

Pass

Verify the BT/GPS control

signal (18BT_RX).

IC6 (7pin):

Square waveform UART data

of 1.8V logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

Fail

Fail

Verify the BT/GPS control

signal (RXD2).

CN1 (7pin): Square

waveform UART data of 3.3V

logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

[The BT/GPS IC is

abnormal]

Replace the PCB.

FailCheck the TX-RX UNIT

PCB

Verify the BT/GPS control

signal (/BT_SHUTDOWN).

CN1 (14pin): 3.3V

[/BT_SHUTDOWN line circuit

is faulty]

Verify the IC1, R7

Replace any abnormal parts.

Fail

Verify the BT/GPS control

signal (TXD2).

CN1 (6pin):

Square waveform UART data

of 3.3V logic.

Check the TX-RX UNIT

PCB

Check the TX-RX UNIT

PCB

Fail

[The 18BT_HCI_RX (TXD2)

line circuit is faulty]

Verify the CP1, IC6, R22

Replace any abnormal parts.

Verify the BT/GPS control

signal (18BT_HCI_TX).

IC6 (8pin):

Square waveform UART data

of 1.8V logic.

[The RXD2 (18BT_HCI_TX)

line circuit is faulty]

Verify the CP1, IC6, R22

Replace any abnormal parts.

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(No.RA054<Rev.001>)1-159

Pass

Check the PCB side B (a).

Pass

Fail [The BT/GPS IC is

abnormal]

Replace the PCB.

[The BT/GPS power supply line 33BT circuit is

faulty]

Verify the PCB side B parts.

C5, C46, C44, C49

Replace any abnormal parts.

Check the PCB side B (b).

Fail [The BT/GPS IC is

abnormal]

Replace the PCB.

[The BT/GPS power supply line 18BT circuit is

faulty]

Verify the PCB side A parts.

C2, C47, L5, L13, C45, C48

Replace any abnormal parts.

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1-160 (No.RA054<Rev.001>)

Pass

Pass

Pass

Pass

Pass

Check the TX-RX UNIT PCB

Fail

Verify the BT/GPS control

signal (TXD2).

CN2 (15pin): Square

waveform UART data of 3.3V

logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

Fail

Verify the BT/GPS control

signal (RXD2).

CN2 (14pin): Square

waveform UART data of 3.3V

logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

[The MPU/DSP IC is

abnormal]

Replace the PCB.

Descriptions of signal names

1) 33BT: BT/GPS IC 3.3V power supply

2) 18BT: BT/GPS IC 1.8V power supply

3) 33GPS: BT/GPS IC 3.3V power supply

4) TXD2: BT/GPS serial data line connected to UART TX of MPU/DSP IC (MPU/DSP to BT/GPS IC)

5) RXD2: BT/GPS serial data line connected to UART RX of MPU/DSP IC (MPU/DSP to BT/GPS IC)

6) 18BT_HCI_RX: BT/GPS serial data line connected to UART RX of BT/GPS IC (MPU to BT/GPS IC)

7) 18BT_HCI_TX: BT/GPS serial data line connected to UART TX of GPS IC (BT/GPS IC to MPU)

8) /BT_SHUTDOWN: BT/GPS active control of MPU/DSP IC (MPU/DSP to BT/GPS IC) High Reset Active, Low

Fail

Fail

Verify the BT/GPS control

signal

CP405 (3pin):

Square waveform UART data

of 3.3V logic.

[The RXD2 (18BT_HCI_TX)

line circuit is faulty]

Verify the CP405

Replace any abnormal parts.

Verify the BT/GPS control

signal (18BT_HCI_TX).

CP405, (4pin):

Square waveform UART data

of 1.8V logic.

[The RXD2 (18BT_HCI_TX)

line circuit is faulty]

Verify the CP405

Replace any abnormal parts.

[The MPU/DSP IC or

unchangeable part is

abnormal]

Replace the PCB.

[The MPU/DSP IC or

unchangeable part is

abnormal]

Replace the PCB.

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(No.RA054<Rev.001>)1-161

5.3 Failure diagnosis of the Bluetooth section

Overview:When the Bluetooth function does not operate, use this flowchart to determine the problem.

No

Pass

Pass

Pass

Pass

Pass

Pass

X2X1

Major parts for a Bluetooth circuit TX-RX Unit BT/GPS UnitIC404

UART

MPU/DSPIC

PCM PCM

Power

UART

IC6 IC5

UART

5.4V

BluetoothAntenna

GPSAntenna

L11

LCFilter

L9

BPF

32.768kHzClock

BT/GPSIC

PCM

Level conversion

IC

IC7

Level conversion

IC

IC2, IC3, IC4

TCXO

19.2MH

1.8V

3.3V

3.3V

Voltage regulator

Charge the BT headset. Turn on your BT headset and bring it

within one meter.

Try again pair with BT headset.

• Bluetooth antenna (Pattern Antenna)

• LC filter (L11)

• Bluetooth/GPS IC (IC5)

• Level conversion IC (IC6, IC7)

• TCXO 19.2MHz (X1)

• 32.768 kHz clock (X2)

• 33BT Regulator (IC3)

• 18BT Regulator (IC2)

• MPU/DSP IC (IC404: TX-RX Unit)

I can not pair with the Bluetooth (BT) headset.

Is the BT headset charged enough?

Is the BT headset turned on?

Is the BT headset in pairing mode?

Check the BT/GPS UNIT PCB side A.

Check the BT/GPS UNIT PCB side A.

FailVerify the antenna matching

parts.

Visually check to L15, C68

Verify the BT/GPS power

supply.

(33BT) L4: 3.3V

FailVerify the BT/GPS power

supply.

(18BT) L5: 1.8V

Fail

FailVerify the RTC for the

BT/GPS.

X2 (3 pin): Square waveform,

32.768 kHz, 1.8Vp-p

Replace any abnormal parts.

[The BT/GPS power supply Fail

line 33BT circuit is faulty]

Verify the PCB side A parts.

L4, C15, C19, C20, C33

Replace any abnormal parts.

Check the BT/GPS UNIT

PCB side B (a).

Check the BT/GPS UNIT

PCB side B (b).

Fail[The BT/GPS power supply

line 18BT circuit is faulty]

Verify the PCB side A parts.

C18, C13, C31, L8, C39

Replace any abnormal parts.

Verify the RTC line circuit for

the BT/GPS.

X2, L8, C39

Replace any abnormal parts.

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1-162 (No.RA054<Rev.001>)

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Fail

Verify the reference clock for

the BT/GPS.

(BT_CLK) Intersection of C8

and C9: Sine waveform,

19.2MHz, 0.2 to 1.2 Vp-p

Check the BT/GPS UNIT PCB side B.

[The reference clock circuit

for the BT/GPS is faulty]

Verify the R9, Q1, R10, R26,

R12, R13, X1, C4, C8, C9

Replace any abnormal parts.

Check the BT/GPS UNIT PCB side B.

Verify the ANT Matching

Parts.

Visually check to R27, R29

Fail

Fail

Verify the BT/GPS control

signal

(BTFM_nSHUTDoWN).

IC1 (5pin): 1.8V

Fail

Verify the BT/GPS control

signal (18BT_RX).

IC6 (7pin):

Square waveform UART data

of 1.8V logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

Replace any abnormal parts.

Verify the BT/GPS control

signal (/BT_SHUTDOWN).

CN1 (16pin): 3.3V Fail

[/BT_SHUTDOWN line circuit

is faulty]

Verify the IC1, R7

Replace any abnormal parts.

Fail

Verify the BT/GPS control

signal (TXD2).

CN1 (6pin):

Square waveform UART data

of 3.3V logic.

[The 18BT_HCI_RX (TXD2)

line circuit is faulty]

Verify the CP1, IC6, R22

Replace any abnormal parts.

Check the TX-RX UNIT

PCB.

Check the TX-RX UNIT

PCB.

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(No.RA054<Rev.001>)1-163

Pass

Pass

Pass

Pass

Pass

Fail

Verify the BT/GPS control

signal (RXD2).

CN1 (7pin): Square

waveform UART data of 3.3V

logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

[The BT/GPS IC is

abnormal]

Replace the PCB.

Check the PCB side B (a).

[The BT/GPS power supply line 33BT circuit is

faulty]

Verify the PCB side B parts.

C5, C46, C44, C49

Replace any abnormal parts.

Fail

Check the PCB side B (b).

Fail[The BT/GPS power supply line 18BT circuit is

faulty]

Verify the PCB side A parts.

C2, C47, L5, L13, C45, C48

Replace any abnormal parts.

Fail

Verify the BT/GPS control

signal (18BT_HCI_TX).

IC6 (8pin):

Square waveform UART data

of 1.8V logic.

[The RXD2 (18BT_HCI_TX)

line circuit is faulty]

Verify the CP1, IC6, R22

Replace any abnormal parts.

Check the TX-RX UNIT

PCB.

[The BT/GPS IC is

abnormal]

Replace the PCB.

[The BT/GPS IC is

abnormal]

Replace the PCB.

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1-164 (No.RA054<Rev.001>)

Pass

Pass

Pass

Pass

Pass

Check the TX-RX UNIT PCB

Verify the BT/GPS control

signal (TXD2).

CN735 (15pin): Square

Fail

waveform UART data of 3.2V

logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

Fail

Verify the BT/GPS control

signal (G_TXD2).

CP705 (3pin):

Square waveform UART data

of 3.2V logic.

[The RXD2 (18BT_HCI_TX)

line circuit is faulty]

Verify the CP705

Replace any abnormal parts.

Fail

Verify the BT/GPS control

signal (18BT_HCI_TX).

CP705, (4pin):

Square waveform UART data

of 1.8V logic.

[The RXD2 (18BT_HCI_TX)

line circuit is faulty]

Verify the CP705

Replace any abnormal parts.

[The MPU/DSP IC is

abnormal]

Replace the TX-RX PCB.

[The MPU/DSP IC is

abnormal]

Replace the TX-RX PCB.

Fail

Verify the BT/GPS control

signal (RXD2).

CN735 (14pin): Square

waveform UART data of 3.3V

logic.

Baud rate:

Default: 115.2kbps

After: 3.967Mbps.

[The BT/GPS IC is

abnormal]

Replace the PCB.

Descriptions of signal names

1) 33BT: BT/GPS IC 3.3V power supply

2) 18BT: BT/GPS IC 1.8V power supply

3) TXD2: BT/GPS serial data line connected to UART TX of MPU/DSP IC (MPU/DSP to BT/GPS IC)

4) RXD2: BT/GPS serial data line connected to UART RX of MPU/DSP IC (MPU/DSP to BT/GPS IC)

5) 18BT_HCI_RX: BT/GPS serial data line connected to UART RX of BT/GPS IC (MPU to BT/GPS IC)

6) 18BT_HCI_TX: BT/GPS serial data line connected to UART TX of GPS IC (BT/GPS IC to MPU)

7) /BT_SHUTDOWN: BT/GPS active control of MPU/DSP IC (MPU/DSP to BT/GPS IC) High Active, Low Reset

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(No.RA054<Rev.001>)1-165

5.4 Replacing TX-RX Unit

TX-RX unit Information

Method of confirming “Original TX-RX unit” and “ServiceTX-RX unit”

Supplied Accessories of “Service TX-RX unit”

“Service TX-RX unit” DataThe following data is written on the service unit:

After Changing the PCB(1) After changing the printed circuit board, write the up-to-

date Firmware following the instructions in the “2.2REALIGNMENT - 2.2.6 Firmware Programming Mode”.• Write the Firmware in accordance to the Market. If you

write different Market Firmware, there are timescommunication with the FPU is not possible.

(2) Using the KPG-D3/D3N, select your desired item (ModelName) from the Radio Configuration> ProductInformation menu, then use Read/ Write > WriteConfiguration to the Transceiver to write the FPU data(PC Programming mode). When writing to thetransceiver, a Warning Message, corresponding to theitem selected, appears. Click [OK] to continue writing thedata.

(3) Tools > Test/Tuning, then adjust the various adjustmentdata (PC Test Mode) as described in the “SECTION 4ADJUSTMENT”.

(4) Attach the new labels corresponding to the new printedcircuit board. (Refer to the images below for labelplacement.)

(5) If necessary, write the FPU data used by the customerwith the KPG-D3/D3N.

Model Name Original TX-RX unit Number

For Service TX-RX unit Number

NX-3720H(G)/3720H(K)

XC1-182K-00 XCA-033K-00

NX-3720(G)/3720(E)

XC1-182K-00 XCA-033E-01

NX-3820H(G)/3820H(K)

XC1-183K-00 XCA-034K-00

NX-3820H(G)/3820H(K2)

XC1-183K-01 XCA-034K-01

NX-3820(G)/3820(E)

XC1-183K-01 XCA-034E-01

Model Name Marking seal

NX-3720H(G)/3720H(K)

XCA-033K-00

NX-3720(G)/3720(E)

XCA-033E-01

NX-3820H(G)/3820H(K)

XCA-034K-00

NX-3820H(G)/3820H(K2)

XCA-034K-01

NX-3820(G)/3820(E)

XCA-034E-01

Item (Including Parts Number) Quantity

TX-RX Unit (XC1-182, XC1-183) 1

KENWOOD ESN/ NXDN ESN/ ProductNumber/ MPT ESN Label

1

The following marking seals are affixed on the shield cover

of the service TX-RX unit (XCA-033K-00/XCA-033E-01/

XCA-034K-00/XCA-034K-01/XCA-034E-01).

Data Type Desctiption

KENWOOD ESN NX-3720, NX-3720HModel name: [XCA-033]NX-3720S (K, E)Type:K, EThe same number as the KENWOODESN label is written.

NX-3820, NX-3820HModel name: [XCA-034]NX-3820S (K, K2, E)Type:K, K2, EThe same number as the KENWOOD ESN label is written.

NXDN ESN/ MPT ESN/Product number

The same number as the NXDN ESN/ MPT ESN/ Pruduct Number label is written.

Page 166: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-166 (No.RA054<Rev.001>)

Note:• When using the ESN Validation function of NXDN

Trunking, the NXDN ESN number changes when thecircuit board is changed (the number is written on thecircuit board); the NXDN Trunking System cannot beaccessed.Use the KPG-110SM on the NXDN Trunking System sideto reprogram the NXDN ESN number.

• When a new printed circuit board is used, the KENWOODESN changes, as does the Transceiver Informationdisplay of the KPG-D3/D3N, but this does not have anyeffect on the operation of the transceiver.

• If changing to the original ESN, please contact our servicecenter.

• KPG-D3N can't be used for E type.

ESN Label Layout

• NX-3720H(G)[K], NX-3720(G)[E], NX-3720[E], NX-3820H(G)[K], NX-3820H[K], NX-3820H(G)[K2], NX-3820(G)[E], NX-3820[E]

• NX-3720H[K], NX-3820H[K2]

Cut a ESN Label at dotted line.

ESN Label

Note:

Page 167: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>)1-167

5.5 Operating Method of Enforced Firmware Overwriting Mode

Enforced firmware overwriting mode is a mode to forcibly overwrite the transceiver firmware when the operations as instructed inSection 2.2.2 "How to Enter Each Mode" does not allow the transceiver to enter the firmware programming mode, for instance, whenthe transceiver fails to start up due to the transceiver failure.

(1) Prepare the followings:• Transceiver (NX-3720, NX-3720H, NX-3820 or NX-3820H)• Regulated DC power supply• Programming interface cable (KPG-46U or KPG-46X)• Power cable

(2) Remove the cabinet, top packing and shielding plate of the transceiver. Connect a transceiver, regulated DC power supply, programming interface cable (KPG-46U or KPG-46X) and power cable.

(3) While FLDM terminal has a short-circuit with GND terminal on the PCB, turn its power ON.

Left: FLDM terminal

Right: GND terminal

Page 168: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

1-168 (No.RA054<Rev.001>)

(4) Upon startup of FLDM loader, "FIRMWARE PROG" appears on an LCD screen.(5) Start KFL up, select the desired firmware you wish to overwrite, select the COM port number and baud rate, and then click the

"Write" button.

Note:Configuring "Auto" for baud rate automatically apply the maximal speed of baud rate allowed for a programming cableconnected to the selected COM port number.Upon start of overwriting on the transceiver, "LOADING" appears on an LCD screen.

(6) Upon completion of the firmware overwriting, "CHECKSUM xxxx" appears on an LCD screen.

Page 169: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-1 2-1 (No.RA054<Rev.001>)

PRECAUTIONS ON SCHEMATIC DIAGRAMS

* Due to the improvement in performance, some part numbers shown in the circuit diagrams

may not agree with those indicated in the Parts List.

* The parts numbers, values and rated voltage etc. in the Schematic Diagrams are for

reference only.

* Since the circuit diagrams are standard ones, the circuits and circuit constants may be

subject to change for improvement without any notice.

* The parts of the symbol with " * " may vary depending on model. Refer to the parts list for details.

* The parts of the symbol with " $ " are unmounted parts.

Page 170: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-2 2-2 (No.RA054<Rev.001>)

D

C

B

A

5 4 3 2 1

R681

R672

R671

R667

R666

R659

R6

58

R655

R654

R6

53

R652

R651

R650

R6

49

R648

R6

47

R646

R645

R644

R643

R634

R633 R631

R630

R628R627

R625

R623

R622

R6

18

R615

R613

R5

39

R534

R533

R532R531

R5

30

R529

R5

28

R527

R5

24 R523 R522

R5

20

R5

19

R5

16

R5

11 R505

R5

03

R502

R501

R4

99

R4

89

R486

R485

R4

83

R4

62

R444

R441

R440R439

R438

R4

18

R4

08

R4

07

R2

80

R2

79

R277 R276

R2

75

R2

74

R2

73

R2

71

R266

R265 R2

60R259

R251

R250

R2

48

R247

R245

R244

R2

43

R242

R241R

24

0

R239

R2

38

R235

R231

R230

R229

R213

R2

12

R2

11

R204

R203

R1

49

R1

48

R1

47

R1

46

R1

45

R1

44

R135

R1

34

R1

33

R1

32

R128

R127 R125

R124

R1

23

R1

22

R121

R120

R119

R1

18

R1

17

R1

15

R1

14

R1

13

R112

R109

R108

R84

R8

3

R8

2

R8

1

R7

7

R76R75

R7

4

R73R

72

R7

1

R70

R6

9

R6

8

R67 R66

R65

R6

4

R62

R5

7R

55

R5

4

R53

R5

2R5

1 R48

R42

R40

R39

R3

8

R36R

35

R29

R2

7

R2

Q6

06

Q605

Q604

Q404

Q4

03

Q402

Q2

06

Q205

Q204

Q202

Q1

07

Q1

04

Q1

03

Q2

5

Q2

3

Q22

Q21

Q2

0

Q1

9

Q13

Q1

2

Q1

1

L4

18

L4

17

L412

L4

11

L410

L4

09

L4

08

L4

07

L4

06

L405

L2

26

L2

25

L221

L220

L219

L2

18

L2

17

L2

08

L2

07

L1

24

L123L121

L119

L107

L19L

17

L16

L1

4

L1

1

IC14

E101

D6

19

D617

D6

15

D602

D410

D4

09

D407

D406 D405 D404D403 D402

D2

01

D107

D1

01

D2

0

D1

7

CP405CP404CP403

CN97

CN96 CN95

CN93

CN92

CN91

CN90

CN89

CN88

CN

87

CN

86

CN82

CN81

CN80

CN79

CN78

CN

77

CN

76

CN75

CN74

CN68

CN67

CN61

CN60

CN59

CN58

CN

57

CN55

CN49

CN48

CN33

CN32

CN31

CN30

CN29

CN28

CN27

CN26

CN25

CN24

CN23

CN22

CN21

CN20

CN

19

CN17

CN

16

CN15

CN14

CN13CN12 CN11

C6

61

C658

C6

57

C651

C634

C633

C632

C6

31

C630

C629

C6

28

C627

C6

26

C606C605

C528

C527

C5

26

C5

23

C522

C521

C5

20

C5

19 C514

C5

11

C509

C5

07

C5

06

C5

05

C5

03

C501

C498

C492

C4

91

C4

89

C488 C487

C486

C485

C4

84

C475

C474C473

C472

C471

C470

C469

C468

C467

C466

C465

C464

C463

C461

C460

C459

C458

C457

C456

C455

C4

53

C4

52

C451

C449

C448

C4

46

C444

C443

C442

C441

C440

C439

C437

C434

C431

C4

29

C428

C4

25

C424

C4

22

C421

C4

12

C4

11

C4

10

C2

80

C279

C2

72

C271

C2

70

C2

66

C2

63

C260

C249

C247

C2

45

C2

44

C2

43

C2

42

C2

41

C239

C237

C236

C2

35

C232

C2

14 C213

C2

12

C211

C148

C1

47

C1

46

C145

C1

43C142

C1

41C140

C1

39

C1

30

C125

C116

C1

15

C1

14

C112

C111

C110

C1

09

C108

C69

C68

C6

7

C66

C6

5

C64

C63

C62C61

C6

0

C59

C58

C57

C5

6

C5

5

C5

2

C51

C50

C4

9

C46

C44

C4

3

C4

1

C4

0

C3

9

C38

C37

C35

C33

C3

0

C2

9

C2

8

C26

C25

C22

C21

C2

0

C12

R5

L1

J2

C5

VoUT1

+B

XC1-182

F3

BA

TT

_C

HK

R2

CN1

IC407

RT

C

IC406

IC405

IC413

CN3

C4

F4

IC602

IC603RXD1

C2 C3

J1

IC12

IC24

IC20

IC16

IC608IC414 IC17

IC204

IC203

IC205

IC101

CN

2

C1

TX

D1

IC1

GN

D

FLDM

TXD0

IC601

J7C-0192-00

IC201

3

4

57

8

15

16

11

12

F2

R1

R3R4

10

13

14

F5

9

6

RXD0

IC26

IC21

IC23

F6

1

2

F1

D1

IC408

_DET

VBUS

--- Component side view (J7C-0192-00) ---

TX-RX UNIT (XC1-182K-00 (NX-3720H(G), NX-3720H, NX-3720(G), NX-3720))

PRINTED CIRCUIT BOARD

Page 171: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-3 2-3 (No.RA054<Rev.001>)

D

C

B

A

54321

TH401

TH

203

TH202

TH201

R680

R679

R678

R677

R676

R675

R674

R673

R670

R669

R668

R665

R664

R663

R662R661

R660

R657

R656

R642

R641

R640

R639 R638

R637

R636

R635

R632

R629

R626 R624

R621

R620 R619

R617R616

R614

R538

R537

R536

R535

R526

R525

R518

R517

R514

R513

R512

R509

R508

R507

R506

R504

R500

R498

R497

R496

R495

R494

R493 R492R491

R490

R488

R487R484

R482

R481

R480

R479

R478

R477

R476

R475

R474

R473

R472R471

R470

R469

R468

R467

R466R465

R464R463

R461

R460

R459

R458

R457

R456R455

R454

R453

R452

R451

R450

R449

R448

R447

R446

R445

R443

R442

R437

R436

R435

R434

R433

R432

R431

R429

R428

R427

R426

R425

R424

R423

R422

R421

R420

R416

R326

R325

R324

R323

R322

R321

R320

R319

R317

R316

R315

R314

R313

R312

R311

R310

R309

R308

R307

R305

R304

R303

R302

R282

R278

R272

R270

R269

R267

R262

R261

R256

R233

R228 R227

R226

R225

R224

R223

R222

R221

R220

R219

R218

R217

R216

R215

R214

R208

R207

R206

R205

R143

R142

R141

R140

R139

R138

R137

R136R131

R116

R80

R79

R78

R6

3

R61

R60

R59

R58

R56

R50

R49

R47

R46

R45

R44

R43

R41

R37

R34

R33

R32

R31

R30

R28

R26

R25

R24R23

R22

R21

Q603

Q602

Q601

Q401

Q301

Q201

Q106

Q105

Q18

Q17

Q1

6Q

15

Q14

L603

L602

L601

L420

L419 L416L415

L41

4

L413

L404

L403

L402

L401

L3

17

L315

L314

L313

L312

L311

L310

L309

L308

L307

L306

L305

L304

L303

L302

L224

L223

L222

L215

L214

L213

L212

L211

L210

L209

L118

L117

L116

L115

L113

L112

L111

L110

L109

L108

L18

L15

L13

L12

IC609

IC404

IC302

IC301

IC25

IC19

IC13

E11

D618

D616

D614

D613

D612

D611

D610 D609

D608

D607

D606D605

D604

D603

D601

D408

D401

D304

D303

D302

D301

D209

D208

D207

D206

D205

D204

D202

D108

D106

D105

D104

D103

D102

D27

D26

D24

D22

D21

D19

D18

D16

D15

D14

D13

CP

605

CP604

CP602 CP601

CP414 CP413CP412

CP

411

CP

410

CP409 CP408

CP

407

CP406

CP402

CP401

CP303 CP302 CP301

CN98

CN94

CN85

CN83

CN72

CN71

CN70

CN69

CN66

CN65

CN64

CN63

CN62

CN56

CN54

CN53

CN52

CN51

CN50

CN47

CN46

CN45

CN44

CN43

CN42

CN41CN40

CN39

CN38CN37

CN36

CN35

CN34

CN

18

C665

C664

C663

C660

C659

C656

C655

C653

C652

C650

C649

C648

C647

C646

C645

C644

C643

C642

C641

C640

C639

C638

C637

C636

C635

C625

C624

C623

C622

C621

C620

C619

C618

C617

C616

C615

C614

C613

C612

C611

C610

C609

C608

C607

C525

C524

C518

C517

C516

C515

C510

C504

C502

C49

7

C495

C4

94C493 C490 C483

C482

C481C480C479

C478C

477

C476

C462

C454

C450

C447

C445

C438

C436

C435

C433

C432

C430

C427

C426

C423C420

C419

C418

C41

7

C416

C415

C414

C405

C348

C347

C346

C345

C344

C343

C342

C341

C340

C339

C338

C337

C336

C335

C334

C333

C332

C331

C330

C329

C328

C327

C326

C325

C324

C323

C322

C321

C320

C319

C318

C317

C316

C315

C314

C313

C312

C311

C310

C309

C308

C307

C306

C305

C304

C278

C277

C275

C274

C268

C267

C265

C264

C262

C261

C259

C258

C257

C256

C255

C254

C253

C252

C251

C250

C238

C234

C233

C231

C230

C229

C228

C227

C226

C225

C224

C223

C222

C221

C220

C219

C218

C216

C209

C208

C207

C138

C137

C136

C135

C134

C133

C132

C131

C129

C128

C127

C124

C123

C120

C113

C76

C75

C74

C73

C72

C54

C53

C4

8

C47

C45

C42 C36

C34

C32

C31

C27

C24

C19

C18

C17

C16

C15

C14

C11

L4

L3

L2

L6

IC412

L5

IC411

IC410IC401

IC403

IC409

IC202

IC402

IC604

IC606

L7

IC15

IC605IC

18

IC22

IC607

X401

X402

TX-RX UNIT (XC1-182K-00 (NX-3720H(G), NX-3720H, NX-3720(G), NX-3720))

--- Foil side view (J7C-0192-00) ---

Page 172: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-4 2-4 (No.RA054<Rev.001>)

A-1C

Side Y axisX axis

ADDRESS TABLE OF BOARD PARTS

Each address may have an address error by one

interval.

REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION

IC IC1 B- 4CIC12 B- 3AIC13 A- 5AIC14 B- 2AIC15 A- 5AIC16 B- 3BIC17 B- 3BIC18 A- 5AIC19 A- 1AIC20 B- 3BIC21 B- 3AIC22 A- 4AIC23 B- 2AIC24 B- 3BIC25 A- 5CIC26 B- 3BIC101 B- 2BIC202 A- 2CIC203 B- 2BIC205 B- 2BIC301 A- 1AIC302 A- 1AIC401 A- 3BIC402 A- 4AIC403 A- 3BIC404 A- 4AIC405 B- 4AIC406 B- 4AIC407 B- 3AIC408 B- 3AIC409 A- 3BIC410 A- 3BIC411 A- 3AIC412 A- 2AIC413 B- 4AIC414 B- 3BIC602 B- 5BIC603 B- 4BIC604 A- 5BIC605 A- 5CIC606 A- 4DIC607 A- 4BIC608 B- 4BIC609 A- 4D TRANSISTORQ11 B- 4BQ12 B- 5BQ13 B- 4BQ14 A- 5AQ15 A- 5AQ16 A- 5AQ17 A- 4CQ18 A- 4CQ19 B- 3BQ20 B- 3BQ21 B- 2BQ22 B- 1BQ23 B- 3CQ25 B- 4BQ103 B- 2BQ104 B- 2AQ105 A- 2AQ106 A- 2AQ107 B- 1AQ201 A- 3CQ202 B- 3B

Q204 B- 2BQ205 B- 2BQ206 B- 3BQ301 A- 1AQ401 A- 4BQ402 B- 4AQ403 B- 3AQ404 B- 4AQ601 A- 4BQ602 A- 4DQ603 A- 4DQ604 B- 5AQ605 B- 5BQ606 B- 4A DIODE D1 B- 5CD13 A- 5AD14 A- 3BD15 A- 4CD16 A- 5CD17 B- 2AD18 A- 5AD19 A- 5AD20 B- 4BD21 A- 5AD22 A- 5AD24 A- 5AD26 A- 5AD27 A- 5AD101 B- 2BD102 A- 2AD103 A- 2BD104 A- 2BD105 A- 2BD106 A- 2BD107 B- 2AD108 A- 2AD201 B- 3BD202 A- 2BD204 A- 1CD205 A- 1CD206 A- 1CD207 A- 1BD208 A- 1BD209 A- 1BD301 A- 1AD302 A- 1AD303 A- 1BD304 A- 1BD401 A- 3BD402 B- 4AD403 B- 4AD404 B- 3AD405 B- 3AD406 B- 3AD407 B- 4AD408 A- 4AD409 B- 4AD410 B- 3AD601 A- 4DD602 B- 4BD603 A- 4CD604 A- 4CD605 A- 4DD606 A- 4DD607 A- 4CD608 A- 4C

D609 A- 4DD610 A- 4DD611 A- 4DD612 A- 4BD613 A- 4BD614 A- 4CD615 B- 5BD616 A- 4DD617 B- 4DD618 A- 4DD619 B- 4A RESISTOR R2 B- 4BR5 A- 1DR21 A- 5AR22 A- 5AR23 A- 5AR24 A- 5AR25 A- 5AR26 A- 5AR27 B- 4BR28 A- 5AR29 B- 4BR30 A- 5AR31 A- 5AR32 A- 5AR33 A- 4AR34 A- 4AR35 B- 3BR36 B- 3BR37 A- 3BR38 B- 3BR39 B- 3BR40 B- 3BR41 A- 5CR42 B- 2AR43 A- 5CR44 A- 4CR45 A- 5CR46 A- 5CR47 A- 4CR48 B- 3BR49 A- 4CR50 A- 4CR51 B- 3BR52 B- 3BR53 B- 3AR54 B- 3BR55 B- 3AR56 A- 5CR57 B- 3AR58 A- 5CR59 A- 5CR60 A- 5CR61 A- 5CR62 B- 4BR63 A- 5CR64 B- 3AR65 B- 3BR66 B- 2AR67 B- 2AR68 B- 2AR69 B- 4CR70 B- 4CR71 B- 3BR72 B- 3CR73 B- 1B

R74 B- 1BR75 B- 4AR76 B- 4AR77 B- 4BR78 A- 5BR79 A- 5BR80 A- 5AR81 B- 4BR82 B- 4BR83 B- 3CR84 B- 3CR108 B- 1AR109 B- 1AR112 B- 2BR113 B- 1BR114 B- 2BR115 B- 2BR116 A- 1AR117 B- 2BR118 B- 1AR119 B- 1BR120 B- 1AR121 B- 2BR122 B- 2BR123 B- 1AR124 B- 1AR125 B- 2BR127 B- 2BR128 B- 2BR131 A- 2AR132 B- 2AR133 B- 2AR134 B- 2AR135 B- 2AR136 A- 2AR137 A- 2AR138 A- 2AR139 A- 2AR140 A- 2AR141 A- 2AR142 A- 2AR143 A- 2AR144 B- 1AR145 B- 1AR146 B- 2AR147 B- 2AR148 B- 1AR149 B- 1AR203 B- 2BR204 B- 3BR205 A- 2CR206 A- 2CR207 A- 1BR208 A- 1BR211 B- 3BR212 B- 3BR213 B- 2BR214 A- 2BR215 A- 2BR216 A- 2BR217 A- 2CR218 A- 2CR219 A- 2CR220 A- 2CR221 A- 2CR222 A- 2BR223 A- 2BR224 A- 2B

R225 A- 2BR226 A- 3BR227 A- 3BR228 A- 3BR229 B- 2BR230 B- 2BR231 B- 3BR233 A- 3BR235 B- 3BR238 B- 3BR239 B- 3CR240 B- 3CR241 B- 2BR242 B- 3CR243 B- 3CR244 B- 2BR245 B- 2BR247 B- 2BR248 B- 2BR250 B- 2BR251 B- 2BR256 A- 2BR259 B- 2BR260 B- 2BR261 A- 2BR262 A- 2CR265 B- 2BR266 B- 2BR267 A- 2BR269 A- 1BR270 A- 1CR271 B- 2BR272 A- 1CR273 B- 2BR274 B- 2BR275 B- 2BR276 B- 1BR277 B- 1BR278 A- 2CR279 B- 2BR280 B- 3BR282 A- 2BR302 A- 1AR303 A- 1AR304 A- 1AR305 A- 1BR307 A- 1AR308 A- 1BR309 A- 1AR310 A- 1AR311 A- 1AR312 A- 1AR313 A- 1BR314 A- 1BR315 A- 1BR316 A- 1AR317 A- 1AR319 A- 1AR320 A- 1AR321 A- 1AR322 A- 1AR323 A- 1AR324 A- 1AR325 A- 1AR326 A- 1AR407 B- 3AR408 B- 3AR416 A- 3A

R418 B- 5AR420 A- 4BR421 A- 4BR422 A- 4BR423 A- 4BR424 A- 4BR425 A- 4BR426 A- 4BR427 A- 4BR428 A- 4BR429 A- 4BR431 A- 3BR432 A- 3BR433 A- 3BR434 A- 4BR435 A- 4AR436 A- 3BR437 A- 3BR438 B- 4AR439 B- 4AR440 B- 4AR441 B- 4AR442 A- 4BR443 A- 4BR444 B- 4BR445 A- 4AR446 A- 4AR447 A- 4BR448 A- 4BR449 A- 4AR450 A- 4BR451 A- 4AR452 A- 4AR453 A- 4AR454 A- 4AR455 A- 4AR456 A- 4AR457 A- 4AR458 A- 4AR459 A- 4AR460 A- 4AR461 A- 4AR462 B- 3BR463 A- 4AR464 A- 4AR465 A- 4AR466 A- 4AR467 A- 4AR468 A- 4AR469 A- 4AR470 A- 4AR471 A- 4AR472 A- 4AR473 A- 4BR474 A- 4BR475 A- 4BR476 A- 4BR477 A- 4BR478 A- 4AR479 A- 4BR480 A- 4AR481 A- 4BR482 A- 4AR483 B- 4AR484 A- 4BR485 B- 4AR486 B- 4AR487 A- 4B

R488 A- 3BR489 B- 5AR490 A- 4AR491 A- 4AR492 A- 4AR493 A- 4AR494 A- 2BR495 A- 2BR496 A- 2BR497 A- 2BR498 A- 3BR499 B- 3AR500 A- 3BR501 B- 4AR502 B- 4AR503 B- 3AR504 A- 3BR505 B- 3AR506 A- 3AR507 A- 3AR508 A- 3AR509 A- 2AR511 B- 3AR512 A- 3BR513 A- 3BR514 A- 3BR516 B- 3AR517 A- 3BR518 A- 3AR519 B- 3AR520 B- 3AR522 B- 4AR523 B- 4AR524 B- 4AR525 A- 3BR526 A- 3AR527 B- 4AR528 B- 4BR529 B- 3BR530 B- 3BR531 B- 3BR532 B- 4BR533 B- 3BR534 B- 3BR535 A- 3BR536 A- 4BR537 A- 4BR538 A- 3BR539 B- 3AR613 B- 4DR614 A- 4DR615 B- 5BR616 A- 4DR617 A- 4DR618 B- 4BR619 A- 5BR620 A- 4BR621 A- 4BR622 B- 5BR623 B- 4CR624 A- 4DR625 B- 4DR626 A- 4DR627 B- 4DR628 B- 4DR629 A- 4DR630 B- 4CR631 B- 4C

R632 A- 4DR633 B- 4CR634 B- 4DR635 A- 4DR636 A- 4DR637 A- 4DR638 A- 4DR639 A- 4DR640 A- 4DR641 A- 4DR642 A- 4DR643 B- 5DR644 B- 5BR645 B- 5AR646 B- 5BR647 B- 5BR648 B- 5AR649 B- 5BR650 B- 4DR651 B- 5DR652 B- 5BR653 B- 5BR654 B- 5AR655 B- 5BR656 A- 4DR657 A- 4DR658 B- 4BR659 B- 4DR660 A- 4BR661 A- 4BR662 A- 4BR663 A- 4BR664 A- 4BR665 A- 4BR666 B- 4BR667 B- 4BR668 A- 4BR669 A- 4BR670 A- 5BR671 B- 4BR672 B- 4BR673 A- 4BR674 A- 4BR675 A- 4BR676 A- 4BR677 A- 4BR678 A- 5BR679 A- 5BR680 A- 5BR681 B- 4A CAPACITORC1 B- 5DC2 B- 5DC3 B- 5DC4 B- 5AC5 B- 3CC11 A- 5AC12 B- 4AC14 A- 5AC15 A- 5AC16 A- 5AC17 A- 5AC18 A- 5AC19 A- 5AC20 B- 4BC21 B- 5BC22 B- 4C

C24 A- 5AC25 B- 4BC26 B- 4CC27 A- 5AC28 B- 5BC29 B- 4AC30 B- 5CC31 A- 5AC32 A- 5CC33 B- 3BC34 A- 5CC35 B- 3BC36 A- 4CC37 B- 3BC38 B- 3BC39 B- 2AC40 B- 3B

C41 B- 2AC42 A- 4CC43 B- 3BC44 B- 3BC45 A- 5CC46 B- 2AC47 A- 4CC48 A- 5CC49 B- 3AC50 B- 3BC51 B- 3BC52 B- 3AC53 A- 5CC54 A- 5CC55 B- 3BC56 B- 4BC57 B- 3BC58 B- 3AC59 B- 3AC60 B- 2AC61 B- 2AC62 B- 2AC63 B- 2AC64 B- 4CC65 B- 4CC66 B- 4CC67 B- 1BC68 B- 3CC69 B- 3BC72 A- 1AC73 A- 1AC74 A- 5AC75 A- 5AC76 A- 5AC108 B- 2BC109 B- 2BC110 B- 2BC111 B- 2BC112 B- 2BC113 A- 1AC114 B- 1AC115 B- 2AC116 B- 2BC120 A- 2AC123 A- 2BC124 A- 2BC125 B- 2AC127 A- 2BC128 A- 2BC129 A- 2AC130 B- 2A

C131 A- 2AC132 A- 2AC133 A- 2AC134 A- 2AC135 A- 2AC136 A- 2AC137 A- 2AC138 A- 2AC139 B- 1AC140 B- 1AC141 B- 1AC142 B- 1AC143 B- 1AC145 B- 1AC146 B- 1AC147 B- 1AC148 B- 1AC207 A- 1CC208 A- 1CC209 A- 1DC211 B- 3BC212 B- 3BC213 B- 2BC214 B- 2BC216 A- 2BC218 A- 2CC219 A- 2CC220 A- 2CC221 A- 2CC222 A- 2CC223 A- 2CC224 A- 2CC225 A- 2CC226 A- 2BC227 A- 2BC228 A- 2CC229 A- 3CC230 A- 3CC231 A- 3BC232 B- 3CC233 A- 3CC234 A- 3BC235 B- 2BC236 B- 2BC237 B- 1BC238 A- 3CC239 B- 2BC241 B- 3CC242 B- 2CC243 B- 2CC244 B- 2CC245 B- 2CC247 B- 2CC249 B- 2CC250 A- 2CC251 A- 2BC252 A- 2BC253 A- 2CC254 A- 1CC255 A- 1CC256 A- 1BC257 A- 1BC258 A- 1CC259 A- 1CC260 B- 2CC261 A- 1BC262 A- 1CC263 B- 2B

C264 A- 1CC265 A- 1CC266 B- 1DC267 A- 1DC268 A- 1DC270 B- 2BC271 B- 2BC272 B- 2BC274 A- 2BC275 A- 2BC277 A- 1CC278 A- 1DC279 B- 1CC280 B- 1DC304 A- 1AC305 A- 1AC306 A- 1AC307 A- 1BC308 A- 1BC309 A- 1BC310 A- 1AC311 A- 1BC312 A- 1AC313 A- 1AC314 A- 1AC315 A- 1AC316 A- 1AC317 A- 1AC318 A- 1BC319 A- 1BC320 A- 1BC321 A- 1AC322 A- 1AC323 A- 1AC324 A- 1AC325 A- 1AC326 A- 1AC327 A- 1AC328 A- 1AC329 A- 1AC330 A- 1AC331 A- 1AC332 A- 1AC333 A- 1BC334 A- 1BC335 A- 1AC336 A- 1AC337 A- 1BC338 A- 1AC339 A- 1AC340 A- 1AC341 A- 1AC342 A- 1AC343 A- 1AC344 A- 1AC345 A- 1AC346 A- 1AC347 A- 1AC348 A- 1AC405 A- 2AC410 B- 5AC411 B- 5AC412 B- 5AC414 A- 3AC415 A- 3AC416 A- 3AC417 A- 5BC418 A- 4B

C419 A- 4AC420 A- 4BC421 B- 4AC422 B- 4AC423 A- 5BC424 B- 4AC425 B- 4AC426 A- 5BC427 A- 5AC428 B- 4AC429 B- 4AC430 A- 5AC431 B- 4AC432 A- 5AC433 A- 4BC434 B- 4BC435 A- 5BC436 A- 4BC437 B- 4BC438 A- 4BC439 B- 4AC440 B- 4BC441 B- 4AC442 B- 4BC443 B- 4AC444 B- 4AC445 A- 4BC446 B- 4BC447 A- 4BC448 B- 4BC449 B- 4AC450 A- 4BC451 B- 4BC452 B- 4BC453 B- 4BC454 A- 4BC455 B- 4AC456 B- 4BC457 B- 4AC458 B- 4AC459 B- 4BC460 B- 4AC461 B- 4BC462 A- 4BC463 B- 4AC464 B- 4BC465 B- 4AC466 B- 4BC467 B- 4AC468 B- 4BC469 B- 4AC470 B- 4AC471 B- 4AC472 B- 4BC473 B- 4BC474 B- 4BC475 B- 4BC476 A- 3AC477 A- 3BC478 A- 3BC479 A- 3BC480 A- 3BC481 A- 4BC482 A- 4BC483 A- 4BC484 B- 4AC485 B- 4AC486 B- 4A

C487 B- 4AC488 B- 4AC489 B- 4AC490 A- 4BC491 B- 3AC492 B- 4AC493 A- 3BC494 A- 3BC495 A- 3BC497 A- 2BC498 B- 3AC501 B- 4AC502 A- 3BC503 B- 3AC504 A- 3BC505 B- 3AC506 B- 3AC507 B- 3AC509 B- 3AC510 A- 3BC511 B- 4AC514 B- 3AC515 A- 3AC516 A- 3AC517 A- 2AC518 A- 2AC519 B- 4AC520 B- 4AC521 B- 4AC522 B- 4AC523 B- 4AC524 A- 3BC525 A- 3BC526 B- 3BC527 B- 3BC528 B- 3BC605 B- 5BC606 B- 4BC607 A- 5BC608 A- 4CC609 A- 5DC610 A- 5CC611 A- 5CC612 A- 5CC613 A- 4DC614 A- 4DC615 A- 4DC616 A- 4DC617 A- 4DC618 A- 4DC619 A- 4DC620 A- 4DC621 A- 4DC622 A- 4DC623 A- 4DC624 A- 4DC625 A- 4DC626 B- 5BC627 B- 5AC628 B- 5BC629 B- 5BC630 B- 5DC631 B- 5BC632 B- 5BC633 B- 5AC634 B- 5BC635 A- 4DC636 A- 4B

C637 A- 4DC638 A- 4BC639 A- 4BC640 A- 4BC641 A- 4BC642 A- 4BC643 A- 4BC644 A- 4BC645 A- 4BC646 A- 4BC647 A- 4BC648 A- 4BC649 A- 4BC650 A- 4BC651 B- 4BC652 A- 4BC653 A- 4BC655 A- 4BC656 A- 4BC657 B- 4BC658 B- 4BC659 A- 4BC660 A- 4DC661 B- 4BC663 A- 4CC664 A- 4DC665 A- 4D OTHER X401 A- 4BX402 A- 3B TH201 A- 1BTH202 A- 1DTH203 A- 2BTH401 A- 4B CN1 B- 3ACN2 B- 5ACN3 B- 5ACN11 B- 4ACN12 B- 4ACN13 B- 4ACN14 B- 5ACN15 B- 5ACN16 B- 5ACN17 B- 4ACN18 A- 5BCN19 B- 5CCN20 B- 4DCN21 B- 4ACN22 B- 2BCN23 B- 2BCN24 B- 2ACN25 B- 1BCN26 B- 2CCN27 B- 2CCN28 B- 3BCN29 B- 3BCN30 B- 2BCN31 B- 2BCN32 B- 2BCN33 B- 1ACN34 A- 1ACN35 A- 1ACN36 A- 1ACN37 A- 1ACN38 A- 1A

CN39 A- 1ACN40 A- 1ACN41 A- 1ACN42 A- 1ACN43 A- 1ACN44 A- 1ACN45 A- 1ACN46 A- 1ACN47 A- 1ACN48 B- 1ACN49 B- 1ACN50 A- 2ACN51 A- 3BCN52 A- 3ACN53 A- 3BCN54 A- 3ACN55 B- 3BCN56 A- 4BCN57 B- 4ACN58 B- 4ACN59 B- 4ACN60 B- 4ACN61 B- 4BCN62 A- 4BCN63 A- 4BCN64 A- 4ACN65 A- 4ACN66 A- 4ACN67 B- 3BCN68 B- 3BCN69 A- 4ACN70 A- 4BCN71 A- 3ACN72 A- 3BCN74 B- 4ACN75 B- 4ACN76 B- 3ACN77 B- 3ACN78 B- 3ACN79 B- 2ACN80 B- 3ACN81 B- 3BCN82 B- 3BCN83 A- 3ACN85 A- 3ACN86 B- 4ACN87 B- 4BCN88 B- 4DCN89 B- 3BCN90 B- 5BCN91 B- 4BCN92 B- 2BCN93 B- 3CCN94 A- 4ACN95 B- 4DCN96 B- 4DCN97 B- 4DCN98 A- 4B CP301 A- 1ACP302 A- 1ACP303 A- 1ACP401 A- 3BCP402 A- 4ACP403 B- 5ACP404 B- 5ACP405 B- 4ACP406 A- 3B

CP407 A- 3BCP408 A- 3ACP409 A- 3ACP410 A- 3ACP411 A- 2ACP412 A- 3ACP413 A- 3ACP414 A- 3ACP601 A- 5BCP602 A- 5BCP604 A- 4BCP605 A- 4B E11 A- 5CE101 B- 1A F1 B- 5CF2 B- 5BF3 B- 4DF4 B- 4BF5 B- 4CF6 B- 4D J1 A- 4DJ2 A- 5D L1 A- 1DL2 A- 1DL3 A- 1DL4 A- 1CL5 A- 1BL6 A- 1BL7 A- 2AL11 B- 3AL12 A- 5CL13 A- 5CL14 B- 2BL15 A- 5CL16 B- 3BL17 B- 3BL18 A- 1AL19 B- 3BL107 B- 2AL108 A- 2AL109 A- 2BL110 A- 2BL111 A- 2BL112 A- 2BL113 A- 2BL115 A- 2AL116 A- 2AL117 A- 2AL118 A- 2AL119 B- 2AL121 B- 1AL123 B- 1AL124 B- 1AL207 B- 3BL208 B- 2BL209 A- 2CL210 A- 2CL211 A- 2BL212 A- 2BL213 A- 3CL214 A- 3BL215 A- 3CL217 B- 1BL218 B- 3C

L219 B- 2CL220 B- 2CL221 B- 2CL222 A- 2BL223 A- 1CL224 A- 1CL225 B- 2BL226 B- 1DL302 A- 1BL303 A- 1BL304 A- 1AL305 A- 1AL306 A- 1AL307 A- 1AL308 A- 1BL309 A- 1BL310 A- 1BL311 A- 1BL312 A- 1AL313 A- 1AL314 A- 1AL315 A- 1BL317 A- 1BL401 A- 3AL402 A- 4BL403 A- 5BL404 A- 4B

L405 B- 4AL406 B- 4BL407 B- 4BL408 B- 4BL409 B- 4BL410 B- 4BL411 B- 4BL412 B- 4BL413 A- 3BL414 A- 3BL415 A- 3AL416 A- 3AL417 B- 4AL418 B- 4AL419 A- 3AL420 A- 4BL601 A- 4BL602 A- 4BL603 A- 4D

Page 173: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-5 2-5 (No.RA054<Rev.001>)

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C112

C111

C110

C1

09

C108

C105

C1

04

C1

03

C1

02

C69

C68

C6

7

C66

C6

5

C64

C63

C62C61

C6

0

C59

C58

C57

C5

6

C5

5

C5

2

C51

C50

C4

9

C46

C44

C4

3

C4

1

C4

0

C3

9

C38

C37

C35

C33

C3

0

C2

9

C2

8C26

C25

C22

C21

C2

0

C12

R5

L1

J2

C5

VoUT1

+B

XC1-183

BA

TT

_C

HK

R2

CN1

IC407

IC408

RT

C

IC406

IC405

IC413

CN3

C4

F4

IC602

IC603RXD1

C2 C3

J1

IC12

IC24

IC20

IC608IC414

IC17

IC204

IC203

IC205

IC101

CN

2

C1

D1

_DETVBUS

TX

D1

IC1

GN

D

F1

FLDM

TXD0

IC601

J7C-0193-00

IC201

1

3

4

57

8

15

16

11

12

F2

R1

R3R4

10

13

14

F5

9

6

RXD0

IC26

IC21IC23

2

F3

F6

IC16

TX-RX UNIT (XC1-183K-00 (NX-3820H(G), NX-3820H, NX-3820(G), NX-3820))

--- Component side view (J7C-0193-00) ---

Page 174: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-6 2-6 (No.RA054<Rev.001>)

D

C

B

A

54321

TH401

TH

20

3

TH202

TH201

R680

R679

R678

R677

R676

R6

75

R6

74

R673

R670

R6

69

R668

R6

65

R6

64

R663

R662R661

R660

R6

57

R6

56

R642

R6

41

R6

40

R6

39 R6

38

R6

37

R6

36

R6

35

R6

32

R629

R6

26 R6

24

R621

R620 R619

R617R616

R6

14

R5

38

R5

37

R5

36

R535

R526

R5

25

R518

R5

17

R5

14

R513

R512

R5

09

R5

08

R5

07

R5

06

R5

04

R5

00

R498

R497

R496

R495

R494

R493 R492R491

R490

R4

88

R487R484

R482

R481

R480

R479

R478

R477

R476

R475

R474

R473

R472R471

R470

R469

R468

R467

R466R465

R464R463

R461

R460R459

R458

R457

R456R455

R454

R453

R452

R451

R450

R449

R448

R447

R446

R445

R443

R442

R437

R4

36

R4

35

R4

34

R433

R432

R431

R429

R4

28

R427

R426

R425

R424

R423

R422

R421

R420

R4

16

R326

R325

R3

24

R3

23

R3

22

R321

R3

20

R319

R3

18

R3

17

R316

R3

15

R314

R3

13

R3

12

R3

11

R310

R3

09

R308

R307

R305

R304

R303

R302

R2

82

R2

81

R278

R272

R2

70

R2

69

R268

R2

67

R262

R2

56

R2

33

R228 R227

R2

26

R2

25

R224

R223

R222

R2

21

R2

20

R219

R218

R217

R2

16

R2

15

R214

R1

43

R1

42

R1

41

R1

40

R139

R138

R1

37

R136R131

R1

16

R80

R7

9

R7

8

R6

3

R6

1

R6

0

R5

9

R5

8

R56

R5

0

R4

9

R47

R46

R45

R44

R43

R41

R3

7

R34

R3

3

R3

2

R3

1

R30

R28

R2

6

R2

5

R2

4R23

R22

R21

Q6

03

Q602

Q6

01

Q4

01

Q301

Q201

Q1

06

Q1

05

Q18

Q17

Q1

6Q

15

Q14

L6

03

L602

L6

01

L420

L419 L416L415

L4

14

L413

L404

L4

03

L402

L4

01

L314

L313

L312

L311

L3

10

L309

L3

08

L3

07

L306

L3

05

L3

04

L303

L3

02

L227

L224

L2

23

L2

22

L2

16

L215

L2

14

L2

13

L212

L2

11

L210L209

L1

18

L1

17

L116

L115

L1

13

L1

12

L111

L110

L109

L1

08

L1

8

L15

L13

L1

2

IC609

IC404

IC302

IC301

IC2

5

IC19

IC1

3

E1

1

D618

D616

D614

D613

D612

D6

11

D610

D6

09

D608

D6

07

D606D605

D604

D6

03

D6

01

D408

D401

D304

D303

D3

02

D3

01

D209

D208

D207

D206

D205

D204

D108

D1

06

D1

05

D1

04

D1

03

D102

D2

7

D26

D24

D22

D2

1

D19

D1

8

D16

D1

5

D1

4

D1

3

CP

60

5

CP604

CP602 CP601

CP414 CP413CP412

CP

41

1

CP

41

0

CP409 CP408

CP

40

7

CP406

CP402

CP401

CP303 CP302 CP301

CN98

CN94

CN85

CN83

CN72

CN71

CN70

CN69

CN66

CN65

CN64

CN63

CN62

CN56

CN54

CN53

CN52

CN51

CN50

CN47

CN46

CN45

CN44

CN43

CN42

CN41CN40

CN39

CN38CN37

CN36

CN35

CN34

CN

18

C6

65

C664

C663

C6

60

C6

59

C6

56

C655

C6

53

C6

52

C650

C649

C6

48

C6

47

C6

46

C6

45

C644

C643

C642

C641

C6

40

C6

39

C638

C6

37

C6

36

C635

C6

25

C6

24

C6

23

C6

22

C6

21

C6

20

C6

19

C6

18

C6

17

C6

16

C6

15

C6

14

C613

C612

C6

11

C6

10

C6

09

C6

08

C607

C525

C524

C5

18

C5

17

C516

C5

15

C510

C5

04

C5

02

C4

97

C4

95

C4

94C4

93 C490 C483

C482

C481C480C4

79

C478

C4

77

C4

76

C462

C454

C4

50

C447

C4

45

C438

C436

C435

C433

C4

32

C4

30

C4

27

C4

26

C4

23C4

20

C4

19

C418

C4

17

C416

C415

C414

C405

C3

47

C346

C345

C344

C343

C342

C341

C3

40

C3

39

C3

38

C3

37

C3

36

C3

35

C3

34

C333

C332

C3

31

C330

C329

C328

C327

C326

C325

C3

24

C3

23

C322

C321

C3

20

C3

19

C317

C316

C315

C314

C313

C312

C311

C3

10

C3

09

C3

08

C307

C3

06

C3

05

C3

04

C2

74

C268

C267

C265

C264

C2

62

C261

C259

C258

C257

C256

C255

C254

C2

53

C2

50

C2

38

C234C233

C231

C2

30C

22

9

C228

C227

C2

26

C225

C2

24

C223

C2

22

C2

21

C2

20C

21

9

C218C217

C216

C207

C201

C1

38

C1

37

C1

36

C135

C1

34

C133

C1

32

C131

C129

C1

28

C127

C124

C1

23

C120

C1

13

C101

C7

6

C7

5

C74

C7

3

C7

2

C5

4

C5

3

C4

8

C4

7

C45

C42 C36

C3

4

C3

2

C31

C2

7

C2

4

C1

9

C18

C1

7

C1

6

C15

C14

C11

L4

L3

L2

L6

IC412

L5

IC411

IC410 IC401

IC403

IC409

IC202

IC22

IC4

02

IC607IC604

X4

02

IC606

X4

01

L7

IC1

5

IC605

IC1

8

TX-RX UNIT (XC1-183K-00 (NX-3820H(G), NX-3820H, NX-3820(G), NX-3820))

--- Foil side view (J7C-0193-00) ---

Page 175: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-7 2-7 (No.RA054<Rev.001>)

A-1C

Side Y axisX axis

ADDRESS TABLE OF BOARD PARTS

Each address may have an address error by one

interval.

REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION

IC IC1 B- 4CIC12 B- 3AIC13 A- 5AIC14 B- 2AIC15 A- 5AIC16 B- 3BIC17 B- 3BIC18 A- 5AIC19 A- 1AIC20 B- 3BIC21 B- 3AIC22 A- 4AIC23 B- 2AIC24 B- 3BIC25 A- 5CIC26 B- 3BIC101 B- 2BIC202 A- 2CIC203 B- 2BIC205 B- 2BIC301 A- 1AIC302 A- 1AIC401 A- 3BIC402 A- 4AIC403 A- 3BIC404 A- 4AIC405 B- 4AIC406 B- 4AIC407 B- 3AIC408 B- 3AIC409 A- 3BIC410 A- 3BIC411 A- 3AIC412 A- 2AIC413 B- 4AIC414 B- 3BIC602 B- 5BIC603 B- 4BIC604 A- 5BIC605 A- 5CIC606 A- 4DIC607 A- 4BIC608 B- 4BIC609 A- 4D TRANSISTORQ11 B- 4BQ12 B- 5BQ13 B- 4BQ14 A- 5AQ15 A- 5AQ16 A- 5AQ17 A- 4CQ18 A- 4CQ19 B- 3BQ20 B- 3BQ21 B- 2BQ22 B- 1BQ23 B- 3CQ25 B- 4BQ101 B- 1AQ102 B- 2AQ103 B- 2BQ104 B- 2AQ105 A- 2AQ106 A- 2AQ201 A- 3CQ202 B- 3B

Q204 B- 2BQ205 B- 2BQ206 B- 3BQ301 A- 1AQ401 A- 4BQ402 B- 4AQ403 B- 3AQ404 B- 4AQ601 A- 4BQ602 A- 4DQ603 A- 4DQ604 B- 5AQ605 B- 5BQ606 B- 4A DIODE D1 B- 5CD13 A- 5AD14 A- 3BD15 A- 4CD16 A- 5CD17 B- 2AD18 A- 5AD19 A- 5AD20 B- 4BD21 A- 5AD22 A- 5AD24 A- 5AD26 A- 5AD27 A- 5AD101 B- 2BD102 A- 2AD103 A- 2BD104 A- 2BD105 A- 2BD106 A- 2BD107 B- 2AD108 A- 2AD201 B- 3BD202 B- 2BD204 A- 1CD205 A- 1CD206 A- 1CD207 A- 1BD208 A- 1BD209 A- 1BD301 A- 1AD302 A- 1AD303 A- 1BD304 A- 1BD401 A- 3BD402 B- 4AD403 B- 4AD404 B- 3AD405 B- 3AD406 B- 3AD407 B- 4AD408 A- 4AD409 B- 4AD410 B- 3AD601 A- 4DD602 B- 4BD603 A- 4CD604 A- 4CD605 A- 4DD606 A- 4DD607 A- 4CD608 A- 4CD609 A- 4D

D610 A- 4DD611 A- 4DD612 A- 4BD613 A- 4BD614 A- 4CD615 B- 5BD616 A- 4DD617 B- 4DD618 A- 4DD619 B- 4A RESISTOR R2 B- 4BR3 B- 4BR4 B- 4BR5 A- 1DR21 A- 5AR22 A- 5AR23 A- 5AR24 A- 5AR25 A- 5AR26 A- 5AR27 B- 4BR28 A- 5AR29 B- 4BR30 A- 5AR31 A- 5AR32 A- 5AR33 A- 4AR34 A- 4AR35 B- 3BR36 B- 3BR37 A- 3BR38 B- 3BR39 B- 3BR40 B- 3BR41 A- 5CR42 B- 2AR43 A- 5CR44 A- 4CR45 A- 5CR46 A- 5CR47 A- 4CR48 B- 3BR49 A- 4CR50 A- 4CR51 B- 3BR52 B- 3BR53 B- 3AR54 B- 3BR55 B- 3AR56 A- 5CR57 B- 3AR58 A- 5CR59 A- 5CR60 A- 5CR61 A- 5CR62 B- 4BR63 A- 5CR64 B- 3AR65 B- 3BR66 B- 2AR67 B- 2AR68 B- 2AR69 B- 4CR70 B- 4CR71 B- 3BR72 B- 3CR73 B- 1B

R74 B- 1BR75 B- 4AR76 B- 4AR77 B- 4BR78 A- 5BR79 A- 5BR80 A- 5AR81 B- 4BR82 B- 4BR83 B- 3CR84 B- 3CR103 B- 1AR104 B- 1AR105 B- 1AR106 B- 1AR108 B- 1AR109 B- 1AR110 B- 1AR111 B- 1AR112 B- 2BR113 B- 1BR114 B- 2BR115 B- 2BR116 A- 1AR117 B- 2BR118 B- 1AR119 B- 1BR120 B- 1AR121 B- 2BR122 B- 2BR123 B- 1AR124 B- 1AR125 B- 2BR126 B- 2AR127 B- 2BR128 B- 2BR129 B- 2AR130 B- 1AR131 A- 2AR132 B- 2AR133 B- 2AR134 B- 2AR135 B- 2AR136 A- 2AR137 A- 2AR138 A- 2AR139 A- 2AR140 A- 2AR141 A- 2AR142 A- 2AR143 A- 2AR145 B- 1AR146 B- 2AR147 B- 1AR203 B- 2BR204 B- 3BR211 B- 3BR212 B- 3BR213 B- 2BR214 A- 2BR215 A- 2BR216 A- 2BR217 A- 2CR218 A- 2CR219 A- 2CR220 A- 2CR221 A- 2CR222 A- 2BR223 A- 2B

R224 A- 2BR225 A- 2BR226 A- 3BR227 A- 3BR228 A- 3BR229 B- 2BR230 B- 2BR231 B- 3BR233 A- 3BR235 B- 3BR238 B- 3BR239 B- 3CR240 B- 3CR241 B- 2BR242 B- 3CR243 B- 3CR244 B- 2BR245 B- 2BR247 B- 2BR248 B- 2BR250 B- 2BR251 B- 2BR256 A- 2BR258 B- 2BR259 B- 2BR260 B- 2BR261 B- 2BR262 A- 2CR265 B- 2BR266 B- 2BR267 A- 2BR268 A- 2BR269 A- 1BR270 A- 1CR271 B- 2BR272 A- 1CR273 B- 2BR274 B- 2BR275 B- 2BR276 B- 1BR277 B- 1BR278 A- 2CR280 B- 3BR281 A- 2BR282 A- 2BR302 A- 1AR303 A- 1AR304 A- 1AR305 A- 1BR307 A- 1AR308 A- 1BR309 A- 1AR310 A- 1AR311 A- 1AR312 A- 1AR313 A- 1BR314 A- 1BR315 A- 1BR316 A- 1AR317 A- 1AR318 A- 1BR319 A- 1AR320 A- 1AR321 A- 1AR322 A- 1AR323 A- 1AR324 A- 1AR325 A- 1AR326 A- 1A

R407 B- 3AR408 B- 3AR416 A- 3AR418 B- 5AR420 A- 4BR421 A- 4BR422 A- 4BR423 A- 4BR424 A- 4BR425 A- 4BR426 A- 4BR427 A- 4BR428 A- 4BR429 A- 4BR431 A- 3BR432 A- 3BR433 A- 3BR434 A- 4BR435 A- 4AR436 A- 3BR437 A- 3BR438 B- 4AR439 B- 4AR440 B- 4AR441 B- 4AR442 A- 4BR443 A- 4BR444 B- 4BR445 A- 4AR446 A- 4AR447 A- 4BR448 A- 4BR449 A- 4AR450 A- 4BR451 A- 4AR452 A- 4AR453 A- 4AR454 A- 4AR455 A- 4AR456 A- 4AR457 A- 4AR458 A- 4AR459 A- 4AR460 A- 4AR461 A- 4AR462 B- 3BR463 A- 4AR464 A- 4AR465 A- 4AR466 A- 4AR467 A- 4AR468 A- 4AR469 A- 4AR470 A- 4AR471 A- 4AR472 A- 4AR473 A- 4BR474 A- 4BR475 A- 4BR476 A- 4BR477 A- 4BR478 A- 4AR479 A- 4BR480 A- 4AR481 A- 4BR482 A- 4AR483 B- 4AR484 A- 4BR485 B- 4A

R486 B- 4AR487 A- 4BR488 A- 3BR489 B- 5AR490 A- 4AR491 A- 4AR492 A- 4AR493 A- 4AR494 A- 2BR495 A- 2BR496 A- 2BR497 A- 2BR498 A- 3BR499 B- 3AR500 A- 3BR501 B- 4AR502 B- 4AR503 B- 3AR504 A- 3BR505 B- 3AR506 A- 3AR507 A- 3AR508 A- 3AR509 A- 2AR511 B- 3AR512 A- 3BR513 A- 3BR514 A- 3BR516 B- 3AR517 A- 3BR518 A- 3AR519 B- 3AR520 B- 3AR522 B- 4AR523 B- 4AR524 B- 4AR525 A- 3BR526 A- 3AR527 B- 4AR528 B- 4BR529 B- 3BR530 B- 3BR531 B- 3BR532 B- 4BR533 B- 3BR534 B- 3BR535 A- 3BR536 A- 4BR537 A- 4BR538 A- 3BR539 B- 3AR613 B- 4DR614 A- 4DR615 B- 5BR616 A- 4DR617 A- 4DR618 B- 4BR619 A- 5BR620 A- 4BR621 A- 4BR622 B- 5BR623 B- 4CR624 A- 4DR625 B- 4DR626 A- 4DR627 B- 4DR628 B- 4DR629 A- 4DR630 B- 4C

R631 B- 4CR632 A- 4DR633 B- 4CR634 B- 4DR635 A- 4DR636 A- 4DR637 A- 4DR638 A- 4DR639 A- 4DR640 A- 4DR641 A- 4DR642 A- 4DR643 B- 5DR644 B- 5BR645 B- 5AR646 B- 5BR647 B- 5BR648 B- 5AR649 B- 5BR650 B- 4DR651 B- 5DR652 B- 5BR653 B- 5BR654 B- 5AR655 B- 5BR656 A- 4DR657 A- 4DR658 B- 4BR659 B- 4DR660 A- 4BR661 A- 4BR662 A- 4BR663 A- 4BR664 A- 4BR665 A- 4BR666 B- 4BR667 B- 4BR668 A- 4BR669 A- 4BR670 A- 5BR671 B- 4BR672 B- 4BR673 A- 4BR674 A- 4BR675 A- 4BR676 A- 4BR677 A- 4BR678 A- 5BR679 A- 5BR680 A- 5BR681 B- 4A CAPACITORC1 B- 5DC2 B- 5DC3 B- 5DC4 B- 5AC5 B- 3CC11 A- 5AC12 B- 4AC14 A- 5AC15 A- 5AC16 A- 5AC17 A- 5AC18 A- 5AC19 A- 5AC20 B- 4BC21 B- 5BC22 B- 4C

C24 A- 5A

C25 B- 4BC26 B- 4CC27 A- 5AC28 B- 5BC29 B- 4AC30 B- 5CC31 A- 5AC32 A- 5CC33 B- 3BC34 A- 5CC35 B- 3BC36 A- 4CC37 B- 3BC38 B- 3BC39 B- 2AC40 B- 3BC41 B- 2AC42 A- 4CC43 B- 3BC44 B- 3BC45 A- 5CC46 B- 2AC47 A- 4CC48 A- 5CC49 B- 3AC50 B- 3BC51 B- 3BC52 B- 3AC53 A- 5CC54 A- 5CC55 B- 3BC56 B- 4BC57 B- 3BC58 B- 3AC59 B- 3AC60 B- 2AC61 B- 2AC62 B- 2AC63 B- 2AC64 B- 4CC65 B- 4CC66 B- 4CC67 B- 1BC68 B- 3CC69 B- 3BC72 A- 1AC73 A- 1AC74 A- 5AC75 A- 5AC76 A- 5AC101 A- 2AC102 B- 1AC103 B- 1AC104 B- 1AC105 B- 1AC108 B- 2BC109 B- 2BC110 B- 2BC111 B- 2BC112 B- 2BC113 A- 1AC114 B- 1AC115 B- 2AC116 B- 2BC117 B- 2AC119 B- 1AC120 A- 2AC121 B- 2A

C122 B- 1AC123 A- 2BC124 A- 2BC125 B- 2AC126 B- 1AC127 A- 2BC128 A- 2BC129 A- 2AC130 B- 2AC131 A- 2AC132 A- 2AC133 A- 2AC134 A- 2AC135 A- 2AC136 A- 2AC137 A- 2AC138 A- 2AC139 B- 1AC140 B- 1AC141 B- 1AC142 B- 1AC143 B- 1AC144 B- 1AC145 B- 1AC146 B- 1AC147 B- 1AC148 B- 1AC201 A- 2CC207 A- 1CC211 B- 3BC212 B- 3BC213 B- 2BC214 B- 2BC216 A- 2BC217 A- 2CC218 A- 2CC219 A- 2CC220 A- 2CC221 A- 2CC222 A- 2CC223 A- 2CC224 A- 2CC225 A- 2CC226 A- 2BC227 A- 2BC228 A- 2CC229 A- 3CC230 A- 3CC231 A- 3BC232 B- 3CC233 A- 3CC234 A- 3CC235 B- 2BC236 B- 2BC237 B- 1BC238 A- 3CC239 B- 2BC241 B- 3CC242 B- 2CC243 B- 2CC244 B- 2CC245 B- 2CC247 B- 2CC249 B- 2CC250 A- 2CC251 B- 2BC252 B- 2BC253 A- 1BC254 A- 1C

C255 A- 1CC256 A- 1BC257 A- 1BC258 A- 1CC259 A- 1CC260 B- 2CC261 A- 1BC262 A- 1CC263 B- 2BC264 A- 1CC265 A- 1CC266 B- 1CC267 A- 1DC268 A- 1DC270 B- 2BC271 B- 2BC272 B- 2BC274 A- 3BC304 A- 1AC305 A- 1AC306 A- 1AC307 A- 1BC308 A- 1BC309 A- 1BC310 A- 1AC311 A- 1BC312 A- 1AC313 A- 1AC314 A- 1AC315 A- 1AC316 A- 1AC317 A- 1AC319 A- 1BC320 A- 1BC321 A- 1AC322 A- 1AC323 A- 1AC324 A- 1AC325 A- 1AC326 A- 1AC327 A- 1AC328 A- 1AC329 A- 1AC330 A- 1AC331 A- 1AC332 A- 1AC333 A- 1BC334 A- 1BC335 A- 1AC336 A- 1AC337 A- 1BC338 A- 1AC339 A- 1AC340 A- 1AC341 A- 1AC342 A- 1AC343 A- 1AC344 A- 1AC345 A- 1AC346 A- 1AC347 A- 1AC405 A- 2AC410 B- 5AC411 B- 5AC412 B- 5AC414 A- 3AC415 A- 3AC416 A- 3AC417 A- 5B

C418 A- 4BC419 A- 4AC420 A- 4BC421 B- 4AC422 B- 4AC423 A- 5BC424 B- 4AC425 B- 4AC426 A- 5BC427 A- 5AC428 B- 4AC429 B- 4AC430 A- 5AC431 B- 4AC432 A- 5AC433 A- 4BC434 B- 4BC435 A- 5BC436 A- 4BC437 B- 4BC438 A- 4BC439 B- 4AC440 B- 4BC441 B- 4AC442 B- 4BC443 B- 4AC444 B- 4AC445 A- 4BC446 B- 4BC447 A- 4BC448 B- 4BC449 B- 4AC450 A- 4BC451 B- 4BC452 B- 4BC453 B- 4BC454 A- 4BC455 B- 4AC456 B- 4BC457 B- 4AC458 B- 4AC459 B- 4BC460 B- 4AC461 B- 4BC462 A- 4BC463 B- 4AC464 B- 4BC465 B- 4AC466 B- 4BC467 B- 4AC468 B- 4BC469 B- 4AC470 B- 4AC471 B- 4AC472 B- 4BC473 B- 4BC474 B- 4BC475 B- 4BC476 A- 3AC477 A- 3BC478 A- 3BC479 A- 3BC480 A- 3BC481 A- 4BC482 A- 4BC483 A- 4BC484 B- 4AC485 B- 4AC486 B- 4A

C487 B- 4AC488 B- 4AC489 B- 4AC490 A- 4BC491 B- 3AC492 B- 4AC493 A- 3BC494 A- 3BC495 A- 3BC497 A- 2BC498 B- 3AC501 B- 4AC502 A- 3BC503 B- 3AC504 A- 3BC505 B- 3AC506 B- 3AC507 B- 3AC509 B- 3AC510 A- 3BC511 B- 4AC514 B- 3AC515 A- 3AC516 A- 3AC517 A- 2AC518 A- 2AC519 B- 4AC520 B- 4AC521 B- 4AC522 B- 4AC523 B- 4AC524 A- 3BC525 A- 3BC526 B- 3BC527 B- 3BC528 B- 3BC605 B- 5BC606 B- 4BC607 A- 5BC608 A- 4CC609 A- 5DC610 A- 5CC611 A- 5CC612 A- 5CC613 A- 4DC614 A- 4DC615 A- 4DC616 A- 4DC617 A- 4DC618 A- 4DC619 A- 4DC620 A- 4DC621 A- 4DC622 A- 4DC623 A- 4DC624 A- 4DC625 A- 4DC626 B- 5BC627 B- 5AC628 B- 5BC629 B- 5BC630 B- 5DC631 B- 5BC632 B- 5BC633 B- 5AC634 B- 5BC635 A- 4DC636 A- 4BC637 A- 4D

C638 A- 4BC639 A- 4BC640 A- 4BC641 A- 4BC642 A- 4BC643 A- 4BC644 A- 4BC645 A- 4BC646 A- 4BC647 A- 4BC648 A- 4BC649 A- 4BC650 A- 4BC651 B- 4BC652 A- 4BC653 A- 4BC655 A- 4BC656 A- 4BC657 B- 4BC658 B- 4BC659 A- 4BC660 A- 4DC661 B- 4BC663 A- 4CC664 A- 4DC665 A- 4D OTHER X401 A- 4BX402 A- 3B TH201 A- 1BTH202 A- 1DTH203 A- 2BTH401 A- 4B CN1 B- 3ACN2 B- 5ACN3 B- 5ACN11 B- 4ACN12 B- 4ACN13 B- 4ACN14 B- 5ACN15 B- 5ACN16 B- 5ACN17 B- 4ACN18 A- 5BCN19 B- 5CCN20 B- 4DCN21 B- 4ACN22 B- 2BCN23 B- 2BCN24 B- 2ACN25 B- 1BCN26 B- 2CCN27 B- 2CCN28 B- 3BCN29 B- 3BCN30 B- 2BCN31 B- 2BCN32 B- 2BCN33 B- 1ACN34 A- 1ACN35 A- 1ACN36 A- 1ACN37 A- 1ACN38 A- 1ACN39 A- 1ACN40 A- 1A

CN41 A- 1ACN42 A- 1ACN43 A- 1ACN44 A- 1ACN45 A- 1ACN46 A- 1ACN47 A- 1ACN48 B- 1ACN49 B- 1ACN50 A- 2ACN51 A- 3BCN52 A- 3ACN53 A- 3BCN54 A- 3ACN55 B- 3BCN56 A- 4BCN57 B- 4ACN58 B- 4ACN59 B- 4ACN60 B- 4ACN61 B- 4BCN62 A- 4BCN63 A- 4BCN64 A- 4ACN65 A- 4ACN66 A- 4ACN67 B- 3BCN68 B- 3BCN69 A- 4ACN70 A- 4BCN71 A- 3ACN72 A- 3BCN74 B- 4ACN75 B- 4ACN76 B- 3ACN77 B- 3ACN78 B- 3ACN79 B- 2ACN80 B- 3ACN81 B- 3BCN82 B- 3BCN83 A- 3ACN85 A- 3ACN86 B- 4ACN87 B- 4BCN88 B- 4DCN89 B- 3BCN90 B- 5BCN91 B- 4BCN92 B- 2BCN93 B- 3CCN94 A- 4ACN95 B- 4DCN96 B- 4DCN97 B- 4DCN98 A- 4B CP301 A- 1ACP302 A- 1ACP303 A- 1ACP401 A- 3BCP402 A- 4ACP403 B- 5ACP404 B- 5ACP405 B- 4ACP406 A- 3BCP407 A- 3BCP408 A- 3ACP409 A- 3A

CP410 A- 3ACP411 A- 2ACP412 A- 3ACP413 A- 3ACP414 A- 3ACP601 A- 5BCP602 A- 5BCP604 A- 4BCP605 A- 4B E11 A- 5CE101 B- 1A F1 B- 5CF2 B- 5BF3 B- 4DF4 B- 4BF5 B- 4CF6 B- 4D J1 A- 4DJ2 A- 5D L1 A- 1DL2 A- 1DL3 A- 1DL4 A- 1CL5 A- 1CL6 A- 1BL7 A- 2AL11 B- 3AL12 A- 5CL13 A- 5CL14 B- 2BL15 A- 5CL16 B- 3BL17 B- 3BL18 A- 1AL19 B- 3BL101 B- 1AL102 B- 1AL103 B- 1AL104 B- 1AL105 B- 2AL106 B- 1AL107 B- 2AL108 A- 2AL109 A- 2BL110 A- 2BL111 A- 2BL112 A- 2BL113 A- 2BL115 A- 2AL116 A- 2AL117 A- 2AL118 A- 2AL119 B- 2AL120 B- 1AL121 B- 1AL122 B- 1AL123 B- 1AL124 B- 1AL207 B- 3BL208 B- 2BL209 A- 2CL210 A- 2CL211 A- 2BL212 A- 2BL213 A- 3C

L214 A- 3BL215 A- 3CL216 A- 3BL217 B- 1BL218 B- 3CL219 B- 2CL220 B- 2CL221 B- 2CL222 A- 2BL223 A- 1CL224 A- 1CL225 B- 2BL226 B- 1CL227 A- 1BL302 A- 1BL303 A- 1BL304 A- 1A

L305 A- 1AL306 A- 1AL307 A- 1AL308 A- 1BL309 A- 1BL310 A- 1BL311 A- 1BL312 A- 1AL313 A- 1AL314 A- 1AL401 A- 3AL402 A- 4BL403 A- 5BL404 A- 4BL405 B- 4AL406 B- 4BL407 B- 4BL408 B- 4BL409 B- 4BL410 B- 4BL411 B- 4BL412 B- 4BL413 A- 3BL414 A- 3BL415 A- 3AL416 A- 3AL417 B- 4AL418 B- 4AL419 A- 3AL420 A- 4BL601 A- 4BL602 A- 4BL603 A- 4D

Page 176: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-8 2-8 (No.RA054<Rev.001>)

B

A

4321

B

A

4 3 2 1

R87

R86R85

R8

4

R8

3

R8

2

R81

R8

0

R7

9

R75R74R73R72

R7

1

R70R69R68R67

R6

6

R64

R6

3

R6

2

R6

1

R60

R5

8 R5

7

R5

6

R5

1

R50

R49

R48

R47

R4

6

R4

5R

44

R43

R4

2

R41

R4

0 R39

R38

R3

7

R36R21

R2

0

R1

9R

18

R17

R16

R1

5

R1

4

R7

R6

R5

R4 R

2

R1

Q6

Q4

Q3

Q1

L14

L1

3

L12

L11

L1

0

L9

L8

L6

L3L

2

L1

D3

2D

30

D28

D27

D2

6

D2

4

D22

D2

1

D2 D1

C7

3

C7

2

C7

1

C7

0

C6

8

C67

C6

6

C6

4

C6

2

C6

1

C59

C5

8

C5

7

C5

6

C5

5

C5

4

C5

3

C5

2

C5

1

C5

0C

49

C4

7

C46

C45

C41

C4

0

C39

C3

8

C3

7

C3

6

C35

C34

C33

C30

C2

8

C2

2

C21

C20

C17

C16

C15

C1

4

C13

C12

C11

C9

C8

C7

C6C

3

C2

C1

IC4

IC3

IC6

IC5CN3

CN5

CN7

CN6

IC1

R77

R33

R3

2

R31

R3

0

R2

9

R2

8R2

7

R25

R2

4

R23

R22

R13

R12

R11

R1

0

R9

R8

Q8

Q2

D34

D33

D2

0

D18 D17

D1

6

D1

5

D12 D11

D1

0

D9

D6 D5

D4

D3

C65

C2

6

C2

5C2

4

J7C-0194-00XC3-050

J1

SUB UNIT (XC3-050M-00)

--- Component side view (J7C-0194-00) ---

--- Foil side view (J7C-0194-00) ---

A-1C

Side Y axisX axis

ADDRESS TABLE OF BOARD PARTS

Each address may have an address error by one

interval.

REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION

IC IC1 B- 1BIC3 B- 1AIC4 B- 1BIC5 B- 1AIC6 B- 2B TRANSISTORQ1 B- 2BQ2 A- 1BQ3 B- 1BQ4 B- 1BQ6 B- 1BQ8 A- 3A DIODE D1 B- 3BD2 B- 3BD3 A- 4BD4 A- 4AD5 A- 4AD6 A- 2AD9 A- 1AD10 A- 4AD11 A- 3AD12 A- 2AD15 A- 1BD16 A- 4BD17 A- 3AD18 A- 3AD20 A- 1BD21 B- 1AD22 B- 1AD24 B- 1AD26 B- 1AD27 B- 1AD28 B- 1AD30 B- 1AD32 B- 1AD33 A- 1BD34 A- 1A RESISTOR R1 B- 3BR2 B- 3BR4 B- 3BR5 B- 3BR6 B- 3BR7 B- 3BR8 A- 4BR9 A- 4AR10 A- 4AR11 A- 2AR12 A- 1BR13 A- 1AR14 B- 3BR15 B- 3BR16 B- 1AR17 B- 1AR18 B- 3AR19 B- 3BR20 B- 3AR21 B- 3BR22 A- 1BR23 A- 4AR24 A- 3AR25 A- 2AR27 A- 3A

R28 A- 4AR29 A- 1BR30 A- 1BR31 A- 4BR32 A- 3AR33 A- 3AR36 B- 1BR37 B- 1BR38 B- 1BR39 B- 1BR40 B- 1BR41 B- 1BR42 B- 1BR43 B- 1AR44 B- 1BR45 B- 1BR46 B- 2BR47 B- 1AR48 B- 1BR49 B- 1AR50 B- 1AR51 B- 1AR56 B- 1AR57 B- 1AR58 B- 1AR60 B- 1BR61 B- 1AR62 B- 1AR63 B- 1BR64 B- 2BR66 B- 2AR67 B- 2AR68 B- 2AR69 B- 2AR70 B- 2AR71 B- 2AR72 B- 2AR73 B- 2AR74 B- 2AR75 B- 2AR77 A- 3AR79 B- 2BR80 B- 2BR81 B- 2AR82 B- 1AR83 B- 1AR84 B- 1AR85 B- 2BR86 B- 2BR87 B- 3B CAPACITORC1 B- 3AC2 B- 2BC3 B- 2BC6 B- 2BC7 B- 2BC8 B- 2BC9 B- 3BC11 B- 3BC12 B- 3BC13 B- 2BC14 B- 2BC15 B- 3BC16 B- 3BC17 B- 3BC20 B- 3BC21 B- 3B

C22 B- 3BC24 A- 3AC25 A- 4AC26 A- 1BC28 B- 1BC30 B- 1BC33 B- 1AC34 B- 1BC35 B- 1AC36 B- 2AC37 B- 2AC38 B- 2AC39 B- 1BC40 B- 1AC41 B- 1AC45 B- 1BC46 B- 1BC47 B- 3AC49 B- 2AC50 B- 2AC51 B- 2AC52 B- 2AC53 B- 2AC54 B- 2AC55 B- 2AC56 B- 2AC57 B- 2AC58 B- 2AC59 B- 1AC61 B- 3AC62 B- 3AC64 B- 3AC65 A- 3AC66 B- 3AC67 B- 3BC68 B- 3AC70 B- 1AC71 B- 1AC72 B- 1AC73 B- 1A OTHER CN3 B- 2ACN5 B- 2ACN6 B- 3ACN7 B- 3B J1 A- 1A L1 B- 2BL2 B- 3BL3 B- 2BL6 B- 2AL8 B- 3AL9 B- 2BL10 B- 3AL11 B- 1BL12 B- 1AL13 B- 1AL14 B- 1A

Page 177: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

(No.RA054<Rev.001>) 2-9 2-9 (No.RA054<Rev.001>)

B

A

321

B

A

3 2 1

R29

R27

R25

R24

R23

R22

R19

R16

R15

R14

R11

R8

R7

R4

R3 R2

R1

L14L13

L6

L3

L2

L1

IC7 D18

D17

CP

2

CP

1

CN9

CN8

CN7

CN

3

CN2

C50C49C48

C47C46

C45 C44

C40

C29

C27C26

C25

C24

C23

C7

C6

C5C3

C2

C1

IC1CN5IC

4

CN1

IC2

IC3 IC6

X2

X1

R26

R21R18

R13

R12

R10

R9Q1

L15

L11

L9

L8

L7

L5

L4

IC5

E1

CN6

CN4

C68

C39

C38

C37

C36

C35

C34

C33

C32

C31

C30

C28

C22

C21

C20

C19

C18

C17

C16

C15

C14

C13

C12

C11

C10

C9

C8

C4

-10J7C-0037

XC2-003/004

MODULE (BT/GPS) UNIT (XC2-0040-10 (NX-3720H(G), NX-3720(G), NX-3820H(G), NX-3820(G)))

--- Component side view (J7C-0037-10) --- --- Foil side view (J7C-0037-10) ---

A-1C

Side Y axisX axis

ADDRESS TABLE OF BOARD PARTS

Each address may have an address error by one interval.

REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION

IC IC1 B- 2AIC2 B- 3BIC3 B- 3AIC4 B- 3AIC5 A- 2BIC6 B- 3BIC7 B- 3B

TRANSISTORQ1 A- 1B

DIODE D17 B- 1BD18 B- 1B

RESISTOR R1 B- 3AR2 B- 2AR3 B- 3AR4 B- 3A

R7 B- 3AR8 B- 3BR9 A- 1BR10 A- 1BR11 B- 3AR12 A- 1BR13 A- 1BR14 B- 3AR15 B- 1BR16 B- 1BR18 A- 2BR19 B- 1BR21 A- 2BR22 B- 3AR23 B- 1BR24 B- 1AR25 B- 2AR26 A- 1BR27 B- 2AR29 B- 2B

CAPACITORC1 B- 3BC2 B- 3BC3 B- 3AC4 A- 1BC5 B- 3AC6 B- 3AC7 B- 3AC8 A- 1BC9 A- 1BC10 A- 1BC11 A- 2BC12 A- 1BC13 A- 1BC14 A- 1BC15 A- 1BC16 A- 2BC17 A- 1BC18 A- 1BC19 A- 1BC20 A- 2B

C21 A- 2BC22 A- 2BC23 B- 1BC24 B- 1BC25 B- 1BC26 B- 1BC27 B- 1BC28 A- 2BC29 B- 1BC30 A- 2BC31 A- 2BC32 A- 2BC33 A- 2BC34 A- 2BC35 A- 2BC36 A- 2BC37 A- 2BC38 A- 1BC39 A- 2BC40 B- 1AC44 B- 3B

C45 B- 3BC46 B- 2AC47 B- 2AC48 B- 3BC49 B- 2BC50 B- 2BC68 A- 2A

OTHER X1 A- 1BX2 A- 2B

CN1 B- 3BCN2 B- 2BCN3 B- 2BCN4 A- 2BCN5 B- 1ACN6 A- 1ACN7 B- 2ACN8 B- 1BCN9 B- 2B

CP1 B- 3BCP2 B- 2B

E1 A- 2B

L1 B- 3BL2 B- 3AL3 B- 3AL4 A- 1BL5 A- 1BL6 B- 1AL7 A- 2BL8 A- 2BL9 A- 1BL11 A- 2BL13 B- 3BL14 B- 3BL15 A- 2A

Page 178: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

2

3

4

5

B C D E F G(No.RA054<Rev.001>) 2-10 2-10 (No.RA054<Rev.001>)

EXT SP

RF

SPG

SP+

RF POWER MODULE

DR

AIN

BIA

S

1

IC601

RF

OU

TP

UT 4

ST

BY

XC1-183(UHF)

IC201

HOOK/RXD/D-2

RF

INP

UT

ME

TX-RX UNIT

12

-

DM/KVL

AF AMP

IN2

8

GA

TE

BIA

S

R5

CN1

+

PTT/TXD

IN11

ANT

SUB UNIT

J1

+

SB

E

-

INT SP

GN

D

MIC

BLC/D+2

XC1-182(VHF)

15

SB

J1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

13.6 V(K,K2)

13.2 V(E)

D[2]

/KEYINT

60

I2CCK

60

SP+

D[0]

1

D[1]

1

SPG

SPG

NC

SP+

SP+

I2CDT

SPG

DM/KVL

GND

P_TEMP

/PSW

R_SET0

R_SET1

RXD

USB_D-

TXD

GND

NC(IGN)

/PTT

USB_D+

ME

GND

GND

1

J2

BT/GPSGPS ANT

CN

2

1

20G

PS

_P

WR

GN

D

GN

D

GP

S_

AL

M

GP

S_

AN

T_

SW

GP

S_

PA

_E

N

/BT

_S

HU

TD

OW

N

WC

LK

BC

LK

BT

_A

UD

_D

I

BT

_A

UD

_D

O

RT

S2

CT

S2

RX

D2

TX

D2

BT

_S

W

GP

SB

T_

DE

T

GN

D

54

M

54

M

CN

1

1

20

CN

5

CN7

CN5

D7

RSTB

ESD_GND

/RD

CN6

VDDI

23

VG

VDD

VSS

VD1

V0

1

LC

D A

SS

Y

XC3-050

2

1

VC

C

NC

1

oU

T2

PP

NC

2

oU

T1

GN

D

NC

GND

GND

GND

GND

SB

SB

SB

SB

D[3]

D[4]

D[5]

NC

54M

NC

32M

NC

18M

NC

GND

NC

MIC/VBUS

/CS

LCDRST

/RD

D[7]

D[6]

/WR

A[23]

R_SET2

GND

IGN

SP2

DETO

DATAI

FCN2

FCN3

FCN4

FCN5

FCN1

50AC

HR1

HR2

GND

FCN6

DC Supply

D[1]

D[3]

SPG

SPG

NC

SP+

SP+

I2CDT

SPG

DM/KVL

ESD_GND

P_TEMP

/PSW

R_SET0

R_SET1

NC

RXD

NC

USB_D-

GND

GND

TXD

GND

GND

GND

NC(IGN)

SB

SB

SB

SB

NC

54M

NC

32M

NC

18M

GND

NC

MIC/VBUS

/CS

LCDRST

/RD

D[7]

D[6]

/WR

A[23]

R_SET2

D[2]

D[5]

/KEYINT

I2CCK

D[4]

SP+

/PTT

D[0]

USB_D+

ME

GND

GND

ESD_GND

XV0

VM

CSB

D6

D5

D4

D3

D2

D1

D0

/WR

A0

ESD_GND

1

12

GND

S8

S9

S10

S7

S6

S5

S4

S1

S2

S3

/PSW

FL

EX

P.B

OA

RD

CN3

(K

EY

PA

D)

MODULE (BT/GPS) UNIT

XC2-004

(NX-3720H(G), NX-3720(G), NX-3820H(G), NX-3820(G) only)

INTERCONNECTION DIAGRAM

Page 179: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

2

3

4

5

B C D E F G(No.RA054<Rev.001>) 2-11 2-11 (No.RA054<Rev.001>)

LEVEL DIAGRAM

Receiver Section

RF (Center Frequency) AF (1kHz)

C311

ANT D205 IC607

D206

C262 D207 C337 C306 IC302 IC404 C655 IC412 C661 IC608 C627 IC601

C145

To make measurements in the AF section, connect the AC level meter.

(ANT input: –53dBm, 1kHz FM, 3kHz DEV (Wide). SP output: 4W@4ohm Load)

In the RF section, use 1000pF coupling capacitor.

(The display shows the SSG input value required to obtain 12dB SINAD.)

Transmitter Section

AF (1kHz) AF (1kHz) RF (Center Frequency)

(Mod) (Local)IC607 IC404 C327 C145

MIC

D205 ANT

D206

IC303 C216 IC202 C225 Q201 C238 IC201 C250 D207 C262

* Transmit frequency : 155MHz

LPFANTSW

HPF Transceiver IC

VCO

MPU/DSP

CODEC

-120dBm -121.5dBm -122.5dBm 141mVrms

CODECMPU/DSP Pre-

DriveDrive Final LPF

ANTSW

6.0mVrms 3dBm 14.5dBm K:18.2dBm

E:15.2dBm

K:48dBm

E:45dBm

K:47.8dBm

E:44.8dBm

K:50W

E:25W

HPF

-107.5dBm

-5dBm~+5dBm

-121dBm

Transceiver IC

123.3mVrms -5~5dBm

VOL

72.1mVrms 77.4mVrms

VCO

NX-3720/3720H

Page 180: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

2

3

4

5

B C D E F G(No.RA054<Rev.001>) 2-12 2-12 (No.RA054<Rev.001>)

Receiver Section

RF (Center Frequency) AF (1kHz)

C311

ANT D205 IC607

D206

C262 D207 C337 C306 IC302 IC404 C655 IC412 C661 IC608 C627 IC601

C145

To make measurements in the AF section, connect the AC level meter.

(ANT input: –53dBm, 1kHz FM, 3kHz DEV (Wide). SP output: 4W@4ohm Load)In the RF section, use 470pF coupling capacitor.(The display shows the SSG input value required to obtain 12dB SINAD.)

Transmitter Section

AF (1kHz) AF (1kHz) RF (Center Frequency)

(Mod) (Local)

IC607 IC404 C327 C145

MIC

D205 ANT

D206

IC303 C216 IC202 C225 Q201 C238 IC201 C250 D207 C262

* Transmit frequency : 435MHz (K2,E), 485MHz (K)

LPFANTSW

HPF Transceiver IC

VCO

MPU/DSP

CODEC

-120dBm -121.5dBm 141mVrms

CODECMPU/DSP Pre-

DriveDrive Final LPF

ANTSW

5.8mVrms 2dBm 14.2dBm K,K2:18.2dBm

E:14.5dBm

K,K2:47.7dBm

E:45.2dBm

K,K2:47.5dBm

E:45dBm

K,K2:45W

E:25W

-107.5dBm

-5dBm~+5dBm

-121dBm

Transceiver IC

149.4mVrms -5~5dBm

72.1mVrms 77.4mVrms

VOL

NX-3820/3820H

Page 181: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

2

3

4

5

B C D E F G(No.RA054<Rev.001>) 2-13 2-13 (No.RA054<Rev.001>)

13.6V

5.0V

1.8V

3.2V3.2V

5.4V

13.6V

1.9V Reg.

RGB

TO

IN

T S

P

GND

GND

GND

SB

SB

SB

GND(SPG)

GND(SPG)

NC

SP+

SP+

SP+

GND

/PSW

GND

NC

SP+

SPG

TO

TX

-RX

UN

IT (

XC

1-1

82, X

C1-1

83)

CN

1

TO

KE

Y P

AD

LCD BACKLIGHT

KEY ILLUMINATION

NC

SB

GND(SPG)

NC(IGN)

NC

NC

NC

/PSW

S3

S2

S1

S4

S5

S6

S7

S10

S9

S8

GND

ESD

A0

/WR

D0

D1

D2

D3

D4

D5

D6

D7

/RD

RSTB

CSB

VDDI

VD1

VSS

VDD

VM

V0

XV0

VG

ESD

ESD_GND

ESD_GND

D1,D2

Analog SW

TX

D t

o R

J4

5

PT

T t

o R

ad

io

BUSSWC

HIGH=2 USBLOW=1 UART/BLC

IO EXPANDER

GND

R_SET0

R_SET1

R_SET2

ME

MIC/VBUS

/PTT

TXD

RXD

GND

DM/KVL

32M

P_TEMP

USB_D-

USB_D+

GND

I2CDT

I2CCK

/KEYINT

54M

18M

LCDRST

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

/CS

A[23]

/WR

/RD

NC

Q3,Q4,Q6

RGB LED

RJ45

TO

LC

D

50M

/LC

DR

ST

18M_LCD

18M

32M

I2CCK

I2CDT

MIC_VBUS3

SB2

BLC4_D+2

PTT_TXD3

HOOK_RXD_D-2DM_KVL3

PTT_TXD

PTT_TXD

RX

D_

50

V

S6

S5

ME

LCDBLC1

LCDBLC2 LC

DB

LC

2

KE

YB

LC

54M

KEYBLC

P_TEMP

/PSW

I2CDT

I2CCK

/KEYINT

/CS

SB

/RD

DAT[7]

DAT[6]

DAT[5]

DAT[4]

DAT[3]

DAT[2]

DAT[1]

DAT[0]

/WR

A[23]

/LCDRST

D-

D+

A[23]

/WR

DAT[0]

DAT[1]

DAT[2]

DAT[3]

DAT[4]

DAT[5]

DAT[6]

DAT[7]

/RD

/CS

32M_LCD

/PSW

50M

50

M

RX

D_

32

V

/PT

T

P_TEMP

/KE

YIN

T

MIC_VBUS

RXD_32V

TXD

DM_KVL

/PTT

ME

LE

D_

R

LE

D_

G

LE

D_

B

/TXDEN

S2

S7

BU

SS

WC

S10

BLC

S7

S3

S2

S1

S6

S5

S4

S10

S9

S8

LC

DB

LC

1

S8

S9

BL

CS

W

BLC_3

D+

D-

S4

ME3

S3

S1

LED_R

LED_G

LED_B

MIC

_V

BU

S

BL

C_

2

HOOK_RXD_D-

BLC4_D+

TX

D

DM

_K

VL

SB

LCD_GNDD

ESD_GNDE

ESD_GNDE

ESD_GNDE

ESD_GNDE

ESD_GNDE

ESD_GNDE

ESD_GNDE ESD_GND

E

ESD_GNDE

LCD_GNDD

$C

75

$C

74

$L15

$R88STBY3

GND

2

VIN4

VoUT

1

$IC7

2.2kR86

2.2kR85

100R84

LB73G0AM-004

L14

47

pC

73

47

pC

72

47

pC

71

47

pC

70

LB73H0AV-003L13

LB

73

G0

AM

-00

4

L1

2

1k

R83

1k

R82

0

R87

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

EC720AA-0523A

CN6

0R2

RSB12ZD32

RSB12ZD26

68

R77

1k

R2

71

00

p

C2

4

330

R12

330

R13

B30-2365-05D34B30-2365-05

D33

Q1SSM3K15AMFV

10

k

R6

41

00

0p

C4

7

330

R8

330

R9

B30-2365-05D4B30-2365-05

D3

NSSW206C-T865

D9

1000pC1 0R1

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

EC710AM-0560ACN7

10

00

pC

45

$C

5

$C

44

$C24$C23

$C

19

$C

18

$C

10

1kR81

$C69

4.7

uC

6

NSSW206C-T865

D16

NSSW206C-T865

D15

NSSW206C-T865

D10

1u

C68

$T

H1 -t

$C

27

$L4

100pC67

$C60

100R80

100R79

180

R31

180

R30

180

R23

180

R22

1k

R2

8

SSM6N37FE

Q8

10

0p

C2

5

LB73G0AM-004

L11

0.1uC62

LB73H0AV-003L9

LB73G0AM-004

L2

0.1

u

C1

5

10

0p

C9

100R75

100R74

100R73

100R72

100R71

100R70

100R69

100R68

100R67

100R66

100pC58

100pC57

100pC56

100pC55

100pC54

100pC53

100pC52

100pC51

100pC50

100pC49

1uC66

1uC65

1uC64

12

11

10

9

8

7

6

5

4

3

2

1

EC720AK-0512A

CN3

VD

D_

64

4

PW

M2

43

PW

M1

42

VD

D_

54

1

PW

M0

40

IRQ

N3

9

KP

Y8

38

KP

X3

37

KP

X2

36

VD

D_

43

5

VS

S_

73

4

SDA

33

SCL

32

DIR25

31

DIR24

30

VSS_6 29

KPY7 28

RESETN

27

KPX5

26

KPY4

25

KPY6

24KPX4

23

KP

Y5

22

VS

S_

52

1

NC

20

VD

D_

31

9

KP

X6

18

VS

S_

41

7

VD

D_

21

6

KP

X7

15

VD

D_

11

4

VS

S_

31

3

KP

X0

12

KPX1

11

KPY2

10

KPY3

9

KPY1

8

KPY07

VSS_26

KPY95

EXITIo0

4

KPY10

3 KPY11

2 VSS_1

1

TC35894FGIC6

VCC 10

S

9

D+

8

D-

7

oE

6GND5

2D-4

2D+3

1D-2

1D+1

BD11600NUX

IC5VCC

8

G2

7

Y1

6

A2

5GND4

Y23

A12

G11

TC7WH126FK

IC3

VCC

8

G2

7

Y1

6

A2

5GND4

Y23

A12

G11

TC7WT125FUF

IC4

VoUT

3GND2

VDD

4CE1

MM3404A50URE

IC1

SSM6N37FE

Q2

SPC10501A01D2

D1

68

0

R3

8

330

R10

330

R24

330

R11

330

R33

330

R32

330

R25

2.2

k

R5

1

2.2

kR

40

2.2

kR

42

2.2

k

R3

9

2.2

k

R4

4

2.2

k

R2

9

2.2

k

R4

8

2.2

kR

43

2.2

kR

37

2.2

kR

41

10

kR

63

10

kR

49

10kR47

1k

R36

1k

R4

5

100R62

0R15

0R7

0R19

0R16

0R20

0R18

0R60

0R58

0R61

0R14

0R57

0R56

0R6

0R

46

0R5

0R21

0R17

150R50

0R4

$R3

RB

52

1C

M-3

0D

22 MINISMDC020F

D27

LTC014EEBFS8Q3 Q4 Q6

LB73H0AV-003L8

LB73H0AV-003L6

LB73H0AV-003

L3

LB73H0AV-003L10

LB73G0AM-004

L1

EMZ6.8ND28

12345678

E58-0535-05J1

2

1

E41-2671-05CN5

ED

ZV

6.8

B

D2

4

ED

ZV

6.8

BD

30

ED

ZV

6.2

B

D2

1

0.0

1u

C3

8

0.1uC35

0.1uC34

0.1

uC

37

0.1u

C61

0.1uC33

0.1

uC

3

0.1

u

C1

3

0.1

uC

14

0.1

uC

41

10

00

pC

20

10

00

p

C2

2

$C

48

10

00

pC

461

00

0p

C4

0 10

00

pC

59

1000pC16

10

00

p

C2

1

1u

C2

8

1u

C3

0

1u

C3

6

$C

32

100p

C39

10

0p

C2

6

$C

63

100pC11

10

0p

C1

2

10

0p

C7

10

0p

C1

7

10

0p

C2

10

0p

C8

B30-2365-05D17

B30-2365-05

D6

B30-2365-05D18

B30-2365-05D11

B30-2365-05D12

B30-2365-05

D5

B30-2364-05D20

SUB UNIT (XC3-050M-00)

SCHEMATIC DIAGRAM

Page 182: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

2

3

4

5

B C D E F G(No.RA054<Rev.001>) 2-14 2-14 (No.RA054<Rev.001>)

TX

-RX

UN

IT (

XC

1-1

82

, X

C1

-18

3)

CN

2

ANT UNCONNECTED:3.30VANT CONNECT:3.13V

GPS ANT

MODULE UNIT (BT/GPS) (XC2-004)

1.80V

3.32V

1.80V

0V

ANT UNCONNECTED:3.30VANT CONNECT:3.13V

3.30V

3.30V

0V

1.80V

1.80V

3.30V3.20V

5.30V3.32V

3.31V

1.80V

3.17V

5.34V0V

0V

CONVERTERLEVEL

IC7

CONVERTERLEVEL

IC6

IC1

CONVERTERLEVEL

GPS/BLUETOOTH

REGULATOR(33GPS)VOLTAGE

IC4

REGULATOR(18BT)VOLTAGE

IC2 IC3

DC SW

REGULATOR(33BT)VOLTAGE

19.2MHz

1.8V

3.3

V

3.3

V

3.3

V

1.8V

MSL

MSL-SL-MSL

MSL

33GPS

to ADC

to ADC

(3216)

3.3V

BT ANT

18BT

33BT

33BT

18BT

1.8V

33

BT

1.8V

3.3V

18

BT

SAW FILTERGPS

GPS&BT RTC

GPS_ALM

GPS_PA_EN_LV

18BT_TX

BT_SW

/BT

_S

HU

TD

OW

N

GPS_ANT_SW

GPS_PWR

GP

S_

PA

_E

N

BC

LK

33BT

18BT_RX 18BT_HCI_TX18BT_HCI_RX

RXD2TXD2

RTS2

CTS2

BT_AUD_DI

BT_AUD_DOWCLK

BCLK

WC

LK

BT

_A

UD

_D

O

BT

_A

UD

_D

I

RT

S2

CT

S2

TX

D2

RX

D2

18

BT

_A

UD

_IN

18

BT

_A

UD

_C

LK

18

BT

_A

UD

_O

UT

18

BT

_A

UD

_F

SY

NC

18

BT

_H

CI_

RT

S

18

BT

_T

X

18

BT

_H

CI_

CT

S

18

BT

_R

X

18

BT

_H

CI_

RX

18

BT

_H

CI_

CT

S

18

BT

_H

CI_

RT

S

18

BT

_A

UD

_F

SY

NC

18

BT

_A

UD

_IN

18

BT

_A

UD

_O

UT

18

BT

_H

CI_

TX

18

BT

_A

UD

_C

LK

L14

L13

2.2n

L15

0

R29

0

R27

CN

8

47p

C50

VoU

T3

VIN

4

GN

D2

CoN

TR

oL

1

NJM

2878F

4-3

3IC

4

CN

9

5678

4321

10*4CP1

5678

4321

10*4 CP2

0.1u

C49

0.1uC48

0.1u

C46

0.1uC47

CN

7

0

R26

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

CN1

F10-3226-05E1

10k

R3

0

R18

0

R21

10k

R2

B1

16

B2

15

B3

14

B4

13

DIR312

OE11

GND10

DIR49

A4

8

A3

7

A2

6

A1

5

DIR14

VCC(A)3

VCC(B)2

DIR21

74AVC4TD245GU

IC1

0.4

7u

C7

18p

C40

1000p

C25

1k

R15

1000p

C26

1k

R19

1000p

C27

0.1

u

C29

0.1

u

C24

1000p

C23

1k

R14

0.1

uC

3

100k

R9

100k

R10

CN6

BT

_T

X_

DB

GX

CN

3

GPS_PPS_OUT

CN2

CN4

10

R16

27n

L6

L2

CE6

VSS5

NC24VoUT 3

NC1 2

VIN 1

IC3

EM6M2

Q1

10p

C9

22p

C8

0

R23

0

R24

47k

R13

47k

R12

0.1u

C4

VCC 4

oUTPUT 3GND2

VCoNT1

L77-3123-05

X1

1p

C68

CN5

0.4

7u

C2

1k

R11

1k

R8

L3

STBY3

VIN4

GND2

VoUT1

BU18TD2WNVXIC2

1uC5

0.4

7u

C1

L1

0.47uC6

(-71)10n

L7

0.1uC44

0.1u

C45

B1

16

B2

15

B3

14

B4

13

DIR312

OE11

GND10

DIR49

A4

8

A3

7

A2

6

A1

5

DIR1 4

VCC(A) 3

VCC(B) 2

DIR2 1

74AVC4TD245GU

IC7

GND1GND2

oUT IN

L11

B1

16

B2

15

B3

14

B4

13

DIR312

OE11

GND10

DIR49

A4

8

A3

7

A2

6

A1

5

DIR1 4

VCC(A) 3

VCC(B) 2

DIR2 1

74AVC4TD245GUIC6

10k

R25

10k

R22

235

4 1

L9

100

R7

100

R4

100

R1

1uC31

18p

C18

18p

C19

RN

262C

SD

18

RN

262C

SD

17

0.1uC11

0.1uC34

1uC15

L8

0.1uC33

L4

0.1uC14

VSS_RF_BT

B10

VS

S_

DC

o_

BT

A9

VD

D_

RF

_B

TB

9

BT

_T

ES

TT

MA

10

VDD1P8_FM

J8

VSS_PASYNTH_FM

J10

VB

AT

1A

2

VD

D1

P8

V_

2A

3

VD

DS

1B

3

BT

_A

UD

_C

LK

D1

BT

_A

UD

_F

SY

NC

D2

BT

_A

UD

_IN

D3

BT

_A

UD

_o

UT

C3

BT

_H

CI_

UA

RT

_T

XA

4

BT

_H

CI_

UA

RT

_R

XB

5

BT

_H

CI_

UA

RT

_C

TS

B4

BT

_H

CI_

UA

RT

_R

TS

B7

BT

_H

oS

T_

WA

KE

UP

A5

BT

FM

_n

SH

UT

Do

WN

A6

VD

D_

DIG

1E

5

VS

S_

DIG

6B

6

BT

_G

PIo

[6]

H5

BT

_G

PIo

[5]

D7

BT

_G

PIo

[4]

C5

BT

_G

PIo

[3]

D6

BT

_G

PIo

[2]

C7

BT

_T

ES

TT

PB

8

VS

S_

DP

LL

_B

TA

7

VD

D_

DC

o_

BT

A8

BT_RF

C10

VDD1P8V_BT

C8

VDD_LDoIN_CLASS1P5_BT

D8

VDD_CLASS1P5_BTD9

VDD_PPAIF_BTD10

REF_CLK_LVE7

REF_CLK_HVE8

BT_WAKEUPH10

VSS_REF_CLKE9

VSS_DIG3E10

VDD_SRAM1F9

VDD_DIG4F10

VSS_DIG1G9

VDDS2G10

FM_I2C_SDAE6

FM_I2C_SCLF6

FM_IRQG6

FM_I2S_CLKF8

FM_I2S_FSYNCF7

FM_I2S_oUTG7

FM_I2S_ING8

FM_AUD_IN_LH7

FM_AUD_IN_RH8

RTC_CLK

H9

VS

S_

LN

A_

GP

S3

K2

TE

ST

_E

NL

10

VS

S_

PA

_F

MJ9

FM

_R

FP

_o

UT

K9

FM

_R

FP

_IN

L9

VS

S_

RF

_F

MK

8F

M_

AB

GA

P_

CA

PL

8

VS

S_

AD

CP

LL

_F

MJ7

FM

_A

UD

_o

UT

_R

K7

FM

_A

UD

_o

UT

_L

L7

RE

F_

CL

K_

RE

QJ6

VD

D_

DIG

3K

6V

PP

L6

VS

S_

DIG

4J5

VD

DS

3K

5V

DD

_S

RA

M2

L5

CL

K_

RE

QP

oL

G4

VS

EN

SE

J4

IFo

RC

EL

4

GP

S_

I2C

_U

AR

T_

SE

LH

4G

PS

_P

A_

EN

G3

GP

S_

EX

T_

LN

A_

EN

H6

GP

S_

IRQ

G5

VS

S_

MIX

_G

PS

K3

VD

D_

IF_

GP

SK

4V

SS

_L

NA

_G

PS

2L

3

GP

S_

LN

A_

INL

2

VSS_LNA_GPS1

L1

VDD_PLL_GPS

J2

VSS_PLL_GPS

J1

VDD1P8_GPS

J3

GPS_TPH3

GPS_TMH2

GPS_UART_TXF5

GPS_UART_RXE3

GPS_SENS_I2C_SCLF4

GPS_SENS_I2C_SDAE4

GPS_nSHUTDoWND5

GPS_TIMESTAMPC6

GPS_PPS_oUTC4

TCXo_LDo_INH1

VSS_DIG2F3

VDD_DIG2F2

VDD_TCXoG1

VSS_TCXo_CLKG2

TCXo_CLK_LVF1

TCXo_LDo_VPRoGE1

VDDS4E2

TCXo_CLK_REQD4

VSS_DIG5C2

VDD_SRAM_LDoC1

VDD_DIG_LDo

B2

VDD1P8V_1

B1

PMTEST_1P8V

A1

IC5

0.1uC13

1uC10

0.1

uC

39

0.1

u

C22

0.1

uC

30

1u

C21

0.1

uC

28

0.1uC35

0.1u

C17

0.1u

C16

0.1uC12

22p

C37

0.1uC32

L5

1u

C20

2.5

p

C38

-32.768000k

L77-3121-05@C-FRE

X2

22p

C36

MSL

MODULE (BT/GPS) UNIT (XC2-0040-10 (NX-3720H(G), NX-3720(G), NX-3820H(G), NX-3820(G)))

Page 183: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

P2.3

P2.4

P2.5

P1.6

P1.7

SBWTDlo

SBWTCK

P2.7

P2.6

P2.2

P2.1

P2.0

P1.5

A4

A3

TXD

RXD

P1.0

AK2401

MP2560DQ-LF-Z

PWR

R1

$C

N9

$CN10

Destination

R3

R2

R4

TX:9.0VRX:0V

5.4V

13.6V5.4V

1.8V

3.2V

13.6V

1.8V

5.0V

1.8V

3.2V

1.8V

1.8V

1.2V

1.2V

1.2V

1.2V

13.6V

5.0V

13.6V13.6V

5.0V

3.2V

3.1V3.2V

1.2V

1.8V5.0V

5.0V

1.8V

1.2V

TX:4.2VRX:4.2V

19.6V

9.0V

TX Low power:4.1VTX High power:4.6V

5.4V

TX:0.8VRX:0V

TX:1.6VRX:0V

TX:5.0VRX:0V

13.6V

VCO Buffer/LPF SHIELD CASE

54M DC/DC SHIELD CASE

50AC

SB

SP

G

TO SUB UNIT (XC3-050) CN7

TO MODULE (BT/GPS) UNIT (XC2-004) CN1 NC

(IG

N)

NC

GN

D

SP

G

SP

+

R_

SE

T0

NC

NC

R_

SE

T1

32

M

SP

+

R_

SE

T2

US

B_

D-

SP

+

GN

D

GN

D

/PS

W

A[2

3]

NC

GN

D

/WR

GN

D

NC

D[0

]

GN

D

D[1

]

GN

D

D[2

]

GN

D

D[3

]

SB

D[4

]

SB

D[5

]

ME

D[6

]

SB

D[7

]

MIC

/VB

US

/RD

SP

G

LC

DR

ST

/PT

T

/CS

P_

TE

MP

/KE

YIN

T

I2C

CK

I2C

DT

GN

D

RX

D

TX

D

DM

/KV

L

NC

GN

D

US

B_

D+

18

M

NC

54

M

CTS

RTS

+B

20

19 18

17

VCO Buffer

VCO

50

FNC6

FNC5

EXT.SP

FNC4

FNC3

FNC2

15

FNC1

RXD1

7 DATAI

14

DATO

HORN ALERT SW

13

SP212

IGN

11

SB

10

D-Sub15

9

8

6

16

5

2

1

4

3

TXD1

GND

RXD

HR

2

TXD

HR

1

RX HPF

32C

Pre-Drive

Drive

90T

90T

90T

For DDR_DVDDFor RVDD,USBFor CVDD

For DVDD IO For DVDD IO For USB

90C

90ANT

Ga

te B

ias 2

DE

T

Ga

te B

ias 1

CV

FWD

TH2

50CT

20V DC/DC

50C

12BU

31BU

BATT CHK

18M

50BU

12M

18M SWLoad Switch

/OVRB(For MSP430)

SB2(9Vreg/D-sub)

50A

SB1(HEAD/AFamp)

54M

32M

32A

AFOAMP

25VREF

DAC

12bit/4ch

DAC E-Vol

8bit/8ch

AFAMPDSUBExSP

19.2MHz

CODEC

VREF

BOOT PIN

Emulation Debug BOOT = 00011110

For Production line

UART BOOT=10010111

CN941 CN922 CN923 CN924 CN925

BO

OT

[2]

BO

OT

[3]

BO

OT

[0]

BO

OT

[7]

BO

OT

[6]

BO

OT

[5]

BO

OT

[1]

BO

OT

[4]

For DVDD IO

/FLDM

FlashROM 512Mb

LOW = UART OR USB LOADER

/FRST = OPEN DRAIN

/WP internal Pull-Up

19.2MHz

TH1

RX

SB

2

GP

SB

T_

DE

T

+B

32M

32M

32M

31BU

31BU

31BU

US

B0

_D

P

/INT15P

32M

US

B0

_D

M

/RST

50A

50A

50A

RE

V

/IN

T_

IO

PRST_MON

R_

SE

T0

R_

SE

T1

R_

SE

T2

UA

RT

2_

SW

2

UART2_SW1

/BT_SHUTDOWN

GPS_PA_EN

UMode

I2C

DT

I2C

CK

/INT15P

TXD1

RXD1

R_

SE

T1

/KEYINT

/ADC

TX

DD

RC

_D

[15]

PWR_CNT

GPS_ANT_SW

/FR

ST

19.2M

32k_I

CTS2

RXD2

UART2_SW1

G_

RX

D2

AD

D[6

]

54M

/ADC_INT

/ADC_INT

IGN

SYMTIM_IN

/OVRB

32A

SPAF_4

25REF

I2CDTI2CCK

P_

TE

MP

/VB

US

_D

ET

18

M_

1

SP

O

MIC

ME

P_

TE

MP

/CS

4

R_

SE

T0

R_

SE

T2

DA

TA

[6]

DA

TA

[7]

DA

TA

[5]

DA

TA

[4]

DA

TA

[3]

DA

TA

[2]

DA

TA

[1]

DA

TA

[0]

/OE

/WR

AD

D[2

3]

PR

ST

_M

ON

PR

ST

/KE

YIN

T

I2C

CK

I2C

DT

RX

D0

TX

D0

/PS

W

/PT

T

/IG

N

18

M

32

M

54

M

SB

1

31

BU

DA

TA

7D

AT

A6

DA

TA

5D

AT

A4

DA

TA

3D

AT

A2

DA

TA

1D

AT

A0

/CS

_L

CD

/RD

_L

CD

/WR

_L

CD

DC

DA

TA

1D

AT

A2

DA

TA

5D

AT

A4

DA

TA

7

DA

TA

3

DA

TA

6

DA

TA

0

/CS

_L

CD

/RD

_L

CD

/WR

_L

CD

DC

32M

DC

R_

AC

LK

DC

R_

DD

O/D

CR

_D

CS

/DC

R_

AC

SD

CR

_A

DI

GP

SB

T_

DE

T

AP

C1

TX

PW

R_

H_

/L

Ra

mp

_O

ffse

t

/DS

W

TX

C

AN

TS

W

AS

SW

AS

TS

W

VC

O_

MO

D

AS

SIS

T

BC

LK

PL

D

DC

R_

DI

DC

R_

DO

/DC

R_

CS

AG

CK

EE

PT

XR

X

/DC

R_

RS

T

CP

AT

T_

SW

50

C

SP

C

I2CDT

50A

SP

C

GP

S_

PA

_E

N

GP

S_

PW

R

GP

S_

AL

M

GP

S_

AN

T_

SW

D33_TXD2

APC

TXD1

RTS1

D33_RXD2

BER_DATABER_CLK

BER_EN

DI

I2CCK

BE

R_E

N

/PS

W_O

UT

50

CT

BT

_S

W

BER_DATA

BER_CLK

SP_MUTE

SBC

VC

O_

MO

D

/DCR_RST

RX

AGCKEEP

18M_1

18M_1

ATT_SW

TXPWR_H_/L

CPZ

CP

SCK1

SDO1

BC

LK

/EVCS

/PTT

/IG

N_O

UT

PA

_M

UT

E

DA

TA

[0]

/SA

VE

/WP

DCR_DI

DCR_DDO

/DCR_DCS

32

M

32M

32M

32

M

50C

50C

20

0C

20

0C

18

M_

1

12M

54M

54M

BA

T_

CN

T

SB1

DI

AFO

DEO_0

CTS1

RXD1

SB2

IGN

PLL_CLK

SB

C

SBC

SDO1SCK1/EVCS

GP

S_

AL

MG

PS

_P

WR

RE

VT

HP

2T

HP

1T

EM

P

CT

S2

SPO

PA_MUTE

SP_MUTE

CP

Z

50

C

32k_O

50

CT

50

CT

32

A

TH

P2

VREF

ME

50

CT

/BINT2

AP

C1

MCLK

MCLK

50C

CV

54

M

BT

_S

W

BT

_A

UD

_D

IB

T_

AU

D_

DO

RT

S2

WC

LK

/BT

_S

HU

TD

OW

N

BCLK

12BU_1

18

M

12BU

12BU_1

18M

18M

DD

RM

_D

[14]

MIC

32

A

18M_3

SBWTDIOSBWTCK

32M

32M

SB1

BLVL

SB2

SBC

18M

32A

12

M_

1

12

M_

1

18

M_

2

32

M_

1

32

M_

1

32

M_

1

/FL

DM

/OE

32M

50A

18M_3

/VB

US

_D

ET

DA

TA

[15

]

DM_IN

DM_OUT

/DM_EN

50A

/CS

_F

/CS

2

/CS2

/CS

2

DM_OUT

DM_IN

/DM_EN

/CS

4

+B

+B

CV

THP1

BT_AUD_DI

BT_AUD_DO

G_

TX

D2

32M

50A

32M

25REF

RTS2

/DACCS

AS

TS

W

/CS

2

TXD2

D33_RXD2

UART2_SW2

D33_TXD2

P_TXD2

P_RXD2

12M

/RST

Ra

mp

_O

ffse

t

32M

/AD

C

BL

VL

50

A

SD

I0S

DO

0S

CK

0

/CRST

18

M_

3

+B

BAT_CNT

P_TXD2

/OVRB

/IGN

P_RXD2

/IGN_OUT

/PSW_OUT

12BU

/BINT

/OVRB_OUT

PWR_CNT

/PSW

50A

/IGN

PLL1_VDDA

12M_1

PLL0_VDDA

32A

/CS3

/CS

3

AS

SIS

T

BCLK DEO_0

SCK1/DACCSSDO1

CODEC_DICODEC_DOWCLK

FC

NT

DD

RM

_D

[1]

DD

RM

_A

[12]

DD

RM

_W

E

DD

RM

_D

QS

[1]

/INT_IO

ASSW

UMode

USB0_DPUSB0_DM

50

A

50A

AD

D[9

]

DA

TA

[9]

AD

D[1

0]

DA

TA

[4]

DA

TA

[6]

AD

D[7

]

AD

D[1

5]

AD

D[1

8]

DA

TA

[15

]

DA

TA

[10

]

DA

TA

[8]

DA

TA

[11

]

DA

TA

[12

]

DA

TA

[7]

AD

D[2

]

AD

D[1

6]

AD

D[1

9]

DA

TA

[13

]

AD

D[1

4]

AD

D[8

]

DA

TA

[1]

AD

D[4

]

AD

D[1

7]

AD

D[3

]

AD

D[1

3]

AD

D[1

1]

DA

TA

[3]

/WR

AD

D[2

2]

AD

D[2

1]

AD

D[2

0]

AD

D[0

]

AD

D[1

]

AD

D[1

2]

AD

D[2

3] VER2

DA

TA

[14

]

DA

TA

[0]

DA

TA

[2]

AD

D[5

]

DA

TA

[5]

DD

RM

_A

[2]

/BIN

T2

PLD

SB

C

/OV

RB

_O

UT

WCLK

CODEC_DI

RXD0

/DCR_ACS

(TXSLOT) RTS1

/DCR_CS

DCR_ACLK

TXD0

DCR_DO

CODEC_DO

/CRST

SYMTIM_IN

I2CDT

PRST

/DSW

SDI0

ANTSW

I2CCK

/BINT

TXC

CTS1

SCK0

SDO0

DCR_ADI

18M_2

18M_1

32M_1

PLL1_VDDA

12M_1

PLL0_VDDA

32M_1

18M_1

32M_1

32M_1

18M_2

DD

RC

_B

A[1

]

DD

RC

_B

A[0

]

DD

RM

_B

A[1

]

DD

RM

_C

LK

P

DD

RM

_D

[3]

DD

RC

_D

QS

[1]

DD

RC

_D

QS

[0]

DD

RC

_D

QM

[1]

DD

RC

_D

QM

[0]

DD

RC

_C

S

DD

RC

_C

AS

DD

RC

_R

AS

DD

RC

_W

E

DD

RC

_C

KE

DD

RC

_C

LK

N

DD

RC

_C

LK

P

DD

RC

_A

[0]

DD

RC

_A

[1]

DD

RC

_A

[2]

DD

RC

_D

[4]

DD

RM

_A

[7]

DD

RC

_A

[12]

DD

RC

_A

[13]

DD

RM

_D

[15]

DD

RC

_A

[11]

DD

RC

_D

[10]

DD

RC

_A

[4]

DD

RM

_D

QM

[0]

DD

RM

_D

[13]

DD

RM

_D

[11]

DD

RM

_B

A[0

]

DD

RC

_D

[3]

DD

RM

_D

QM

[1]

DD

RM

_A

[6]

DD

RM

_R

AS

DD

RM

_A

[3]

DD

RC

_A

[6]

DD

RM

_A

[9]

DD

RC

_D

[2]

DD

RC

_D

[6]

DD

RM

_D

[5]

DD

RM

_A

[8]

DD

RM

_D

[0]

DD

RM

_C

LK

N

DD

RC

_A

[9]

DD

RC

_A

[8]

DD

RM

_A

[4]

DD

RM

_D

[12]

DD

RC

_A

[7]

DD

RC

_D

[14]

DD

RC

_D

[12]

DD

RM

_C

S

DD

RM

_C

AS

DD

RM

_C

KE

DD

RC

_A

[5]

DD

RC

_D

[1]

DD

RM

_D

[7]

DD

RC

_D

[13]

DD

RC

_D

[5]

DD

RC

_D

[9]

DD

RM

_A

[13]

DD

RM

_D

[10]

DD

RM

_A

[5]

DD

RM

_D

[4]

DD

RM

_A

[10]

DD

RM

_D

QS

[0]

DD

RM

_D

[6]

DD

RM

_D

[8]

DD

RC

_D

[11]

DD

RC

_A

[3]

DD

RC

_A

[10]

DD

RC

_D

[0]

DD

RM

_A

[1]

DD

RM

_A

[0]

DD

RM

_A

[11]

DD

RC

_D

[7]

DD

RC

_D

[8]

DD

RM

_D

[2]

DD

RM

_D

[9]

12

M_

1

12M_1

18

M_

1

DD

RM

_B

A[1

]

DD

RM

_D

QM

[0]

AD

D[1

9]

DD

RM

_A

[0]

AD

D[1

4]

DD

RM

_A

[12

]

DD

RM

_A

[6]

DD

RM

_A

[9]

DA

TA

[12

]

AD

D[1

6]

DD

RM

_D

[9]

DA

TA

[1]

AD

D[1

7]

DD

RM

_D

QS

[1]

DA

TA

[7]

AD

D[2

1]

AD

D[0

]

DD

RM

_D

[13

]

DD

RM

_B

A[0

]

DD

RM

_A

[2]

AD

D[7

]

DD

RM

_A

[1]

32M

DD

RM

_A

[13

]

DD

RM

_C

KE

DD

RM

_C

LK

P

DA

TA

[10

]

DA

TA

[13

]

/WR

DD

RM

_A

[10

]

DA

TA

[9]

DD

RM

_C

AS

/WP

AD

D[1

1]

AD

D[1

3]

DD

RM

_D

[3]

DD

RM

_D

[10

]

DA

TA

[14

]

DA

TA

[6]

DD

RM

_A

[8]

DD

RM

_D

[15

]

AD

D[8

]

AD

D[1

]

AD

D[2

0]

DD

RM

_R

AS

DA

TA

[2]

DD

RM

_A

[4]

DD

RM

_D

[11

]

AD

D[2

]

DD

RM

_D

QM

[1]

/CS

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5GND4

Y23

A12

G11

TC7WT126FU-F

IC602

VCC

8

G2

7

Y1

6

A2 5

GND

4

Y2

3

A12

G11

TC7WH126FKIC603

VDD

8

oUT2

7

IN2-

6

IN2+

5VSS4

IN1+3

IN1-2

oUT11

BU7462NUXIC414

V+8

BoUTPUT7

B-INPUT6

B+INPUT5

V-

4

A+INPUT

3

A-INPUT

2

AoUTPUT

1

$IC204

V+

8

Bo

UT

PU

T

7

B-I

NP

UT

6

B+

INP

UT

5

V-

4

A+

INP

UT

3

A-I

NP

UT

2

Ao

UT

PU

T

1

NJM

29

04

CR

B1

IC1

01

VDD

8

oUT2

7

IN2-

6

IN2+

5VSS4

IN1+3

IN1-2

oUT11

BU7462NUX

IC608

GN

D_

3

9

GN

D_

2

8

EN7

VIN_2

6

VIN_1

5GND_1

4VoUT_2 3

VoUT_1 2MoDE 1

LXDC2XQ12A-252IC24

VCC

10

S9

D+8

D-7

oE6

GND

5

2D-

4

2D+

3

1D-

2

1D+

1

BD11600NUXIC405

SCLK

10

SYNC9

DIN8

VREFIN7

GND6

VoUTD

5

VoUTC

4

VoUTB 3

VoUTA

2

VA

1

DAC124S085CISIC411

VCC

10

S9

D+8

D-7

oE6

GND

5

2D-

4

2D+

3

1D-

2

1D+

1

BD11600NUXIC406

EXPOSED11

BS

T

10

VIN

_2

9

VIN

_1

8

FR

EQ

7

GN

D

6

FB

5

Co

MP

4

EN

3

SW

_2

2

SW

_1

1

IC25

oU

T1

12

NC

2

11

PW

RG

ND

10

NC

1

9

oU

T2

8

VC

C

7

PP

6

ST

BY

5

IN2

4

PR

EG

ND

3

IN1

2

RF

1

LA4631VC-XEIC601

VCC

16

GND

15

R2IN

8

T1oUT

14

R1IN

13

R1oUT

12

T1IN

11

T2IN

10

R2oUT9

T2oUT

7

V-

6

C2-

5

C2+

4

C1-

3

V+

2

C1+

1

ADM3202ARUZ

IC605

DVSS

20

19

10

18

17

16

15

14

13

12

11

98

76

54

32

DVCC1

MSP430G2533P0

IC22

Vo

UT

2

24

Vo

UT

12

3

VIN

12

2

VIN

82

1

Vo

UT

82

0V

oU

T7

19

VIN7 18

GND 17

RESET 16

VDAREF2 15

VDAREF1

14

VIN6

13

Vo

UT

6

12

Vo

UT

51

1

VIN

51

0

VIN

49

Vo

UT

48

Vo

UT

37

VIN36

DI5

CLK4

LD3

VDD2

VIN21

R2A20178NPIC412

EX

PA

D25

A2

24

A1

23

INT

22

VC

C

21

SD

A

20

SC

L

19

A018

P1717

P1616

P1515

P1414

P1313

P1

2

12P

11

11

P1

0

10

GN

D

9

P0

7

8

P0

6

7

P05 6

P04 5

P03 4

P02 3

P01 2

P00 1

TCA9555RTWRIC409

EXPAD

25

A224

A123

INT22

VCC21

SDA20

SCL19

A0

18

P1

71

7

P1

61

6

P1

51

5

P1

41

4

P1

31

3

P12 12

P11 11

P10 10

GND 9

P07 8

P06 7

P0

56

P0

45

P0

34

P0

23

P0

12

P0

01

TCA9555RTWRIC604

+VA232

REFP31

REFM30

GPIo29

+VBD28

BDGND27

SDo26

SDI25

SC

LK

24

CS

23

AG

ND

2

22

+V

A1

21

CH

0

20

CH

1

19

CH

2

18

CH

3

17

CH4 16

CH5 15

CH6 14

CH7 13

CH8 12

CH9 11

CH10 10

CH11 9

CH

12

8

CH

13

7

CH

14

6

CH

15

5

AIN

M

4

AIN

P

3

MX

o

2

AG

ND

1

1

ADS7961SRHBIC410

DV

DD

32

RE

SE

T3

1

RIG

HT

_L

oM

30

RIG

HT

_L

oP

29

LE

FT

_L

oM

28

LE

FT

_L

oP

27

AV

SS

22

6A

VD

D

25

DRVDD2

24

HPRoUT

23

HPRCoM 22

DRVSS 21

HPLCoM 20

HPLoUT 19

DRVDD1 18

AVSS1 17

MIC

2R

/LIN

E2

R

16

MIC

BIA

S

15

MIC

2L

/LIN

E2

L/M

ICD

ET

14

MIC

1R

M/L

INE

1R

M1

3

MIC

1R

P/L

INE

1R

P1

2

MIC

1L

M/L

INE

1L

M1

1

MIC

1L

P/L

INE

1L

P1

0S

DA

9

SCL8

IoVDD7

DVSS6

DoUT5

DIN4

WCLK3

BCLK2

MCLK1

TLV32AIC3104IIC607

VSS4

53

DA_FS52

AD_FS51

AD_SDo50

AD_SCLK49

DVDD48

LD47

SDATAo46

SCLK45

SDATAI44

CSN43

AGC_KEEP42

TX_PDN41

RX_PDN40

RS

TN

39

VC

oM

_A

D

38

AD

VD

D

37

AD

VS

S

36

TE

ST

2

35

Ao

UT

_N

34

Ao

UT

_P

33

RX

VD

D

32

BIA

S1

31

LN

AV

DD

30

LN

AC

oN

T

29

LN

AIN

28

VS

S3

27

VSS2 26

LNAoUT 25

DEMVDD 24

DEMIN 23

VSS1 22

LoVDD 21

RFoUTN 20

RFoUTP 19

LoIN 18

LoDVDD 17

CPZ 16

SWIN 15

CP 14

CP

VD

D

13

SY

NV

DD

12

SY

NV

SS

11

VR

EF

2

10

TC

Xo

IN

9

VR

EF

1

8

DA

CV

DD

7

SM

Fo

UT

6

BIA

S2

5T

ES

T1

4D

A_

SD

I3

DV

SS

2

DA

_S

CL

K

1

IC302

VSSQ5 E1

VSSQ1 D9

VSSQ4 C1

VSSQ3 B9

VSSQ2 A3

VSS3 K1

VSS2 F1

VSS1 A1

VDDQ5E9

VDDQ4D1

VDDQ3C9

VDDQ2B1

VDDQ1A7

VDD3K9

VDD2F9

VDD1A9

A1

2

H3

NC

1

F7

NC

2

F3

UD

QS

E2

LD

QS

E8

DQ

15

A2

DQ

14

B3

DQ

13

B2

DQ

12

C3

DQ

11

C2

DQ

10

D3

DQ

9

D2

DQ

8

E3

DQ

7

E7

DQ

6

D8

DQ

5

D7

DQ

4

C8

DQ

3

C7

DQ

2

B8

DQ

1

B7

DQ

0

A8

UD

M

F2

LD

M

F8

WE

G7

CA

S

G8

RA

S

G9

BA

1

H9

BA

0

H8

CS

H7

CK

E

G1

CK

G2

CK

G3

A1

1

H2

A1

0/A

P

J7

A9

H1

A8

J3

A7

J2

A6

J1

A5

K3

A4

K2

A3

K8

A2

K7

A1

J9

A0

J8

IC402

VSS1E8VSS2

H2VSS3

H7

VCCG5

NC

1

A1

NC

2

A8

RF

U1

B1

RF

U2

C1

RF

U3

D1

NC

3

H1

NC

4

H8

RY

/BY

A4

RF

U4

E1

BY

TE

F7

RF

U5

G1

DQ

15

/A-1

G7

DQ

14

F6

DQ

13

G6

DQ

12

F5

DQ

11

G4

DQ

10

F4

DQ

9

G3

DQ

8

F3

DQ

7

E6

DQ

6

H6

DQ

5

E5

DQ

4

H5

DQ

3

H4

DQ

2

E4

DQ

1

H3

DQ

0

E3

VIo

2

D8

VIo

1

F1

WP

/AC

C

B4

RE

SE

T

B5

WE

A5

oE

G2

CE

F2

A2

5

G8

A2

4

F8

A2

3

C8

A2

2

B8

A2

1

C5

A2

0

D4

A1

9

D5

A1

8

C4

A1

7

B3

A1

6

E7

A1

5

D7

A1

4

C7

A1

3

A7

A1

2

B7

A1

1

D6

A1

0

C6

A9

A6

A8

B6

A7

A3

A6

C3

A5

D3

A4

B2

A3

A2

A2

C2

A1

D2

A0

E2

IC401

DVDD3318_C10

R4

DVDD3318_C9

P12

DVDD3318_C8

P6

DVDD3318_C7

P5

DVDD3318_C6

N13

DVDD3318_C5

M13

DVDD3318_C4L13

DVDD3318_C3L4

DVDD3318_C2K13

DVDD3318_C1J5

DVDD3318_B11K15

DVDD3318_B10J14

DVDD3318_B9G9

DVDD3318_B8F13

DVDD3318_B7F12

DVDD3318_B6F11

DVDD3318_B5F10

DVDD3318_B4F8

DVDD3318_B3F7

DVDD3318_B2F6

DVDD3318_B1E14

DVDD3318_A6H5

DVDD3318_A5G15

DVDD3318_A4G14

DVDD3318_A3G5

DVDD3318_A2F15

DVDD3318_A1F5

DV

DD

18

_1

0

R13

DV

DD

18

_9

P13

DV

DD

18

_8

L6

DV

DD

18

_7

K5

DV

DD

18

_6

J13

DV

DD

18

_5

G12

DV

DD

18

_4

G11

DV

DD

18

_3

G10

DV

DD

18

_2

G6

DV

DD

18

_1

F14

RV

DD

3

N7

RV

DD

2

H14

RV

DD

1

E5

CV

DD

18

N8

CV

DD

17

M9

CV

DD

16

M8

CV

DD

15

L12

CV

DD

14

K12

CV

DD

13

K6

CV

DD

12

J12

CV

DD

11

J6

CV

DD

10

H13

CV

DD

9

H12

CV

DD

8

H11

CV

DD

7

H10

CV

DD

6

H7

CV

DD

5

H6

CV

DD

4

G13

CV

DD

3

G8

CV

DD

2

G7

CV

DD

1

E15

NC3

M3

RSV2

T19

SATA_VDD4

N4

SATA_VDD3

P2

SATA_VDD2

P1

SATA_VDD1 M2

SATA_VDDR P3

USB_CVDDM12

USB1_VDDA18 P14

USB1_VDDA33 P15

USB0_VDDA18 N14

USB0_VDDA33 N18

DDR_DVDD18_10 R9

DDR_DVDD18_9 R8

DDR_DVDD18_8 R7

DDR_DVDD18_7 P10

DDR_DVDD18_6 P9

DDR_DVDD18_5 P8

DDR_DVDD18_4 P7

DDR_DVDD18_3 N10

DDR_DVDD18_2 N9

DDR_DVDD18_1 N6

DDR_VREF

R6

DDR_ZP

U12

RTC_CVDD

L14

PLL1_VDDA

N15

PLL0_VDDA

L15

VS

S3

0

P11

VS

S2

9

N12

VS

S2

8

N11

VS

S2

7

N5

VS

S2

6

M11

VS

S2

5

M10

VS

S2

4

M7

VS

S2

3

M6

VS

S2

2

M5

VS

S2

1

M4

VS

S2

0

L11

VS

S1

9

L10

VS

S1

8

L9

VS

S1

7

L8

VS

S1

6

L7

VS

S1

5

L5

VS

S1

4

K11

VS

S1

3

K10

VS

S1

2

K9

VS

S1

1

K8

VS

S1

0

K7

VS

S9

J11

VS

S8

J10

VS

S7

J9

VS

S6

J8

VS

S5

J7

VS

S4

H15

VS

S3

H9

VS

S2

H8

VS

S1

A19

NC

2

N16

NC

1

M14

SA

TA

_V

SS

6

M1

SA

TA

_V

SS

5

L3

SA

TA

_V

SS

4

K2

SA

TA

_V

SS

3

K1

SA

TA

_V

SS

2

H2

SA

TA

_V

SS

1

H1

RT

C_

VS

S

H18

PL

L1

_V

SS

A

M15

PL

L0

_V

SS

A

M17

oS

CV

SS

L18

PRU1_R30<0>/PRU1_R31<1>

K4

MMCSD1_DAT<1>/PRU1_R30<1>/PRU1_R31<2>

J3

MMCSD1_DAT<2>/PRU1_R30<2>/PRU1_R31<3>

K3

MMCSD1_DAT<3>/PRU1_R30<3>/PRU1_R31<4>

H3

RMII_CRS_DV/PRU1_R31<29>

W19

RMII_MHZ_50_CLK/PRU0_R31<23>

W18

RMII_RXER/PRU0_R31<24>W17

RMII_RXD<0>/PRU0_R31<25>V17

RMII_RXD<1>/PRU0_R31<26>W16

RMII_TXEN/PRU0_R31<27>R14

RMII_TXD<0>/PRU0_R31<28>V16

RMII_TXD<1>/PRU0_R31<29>U18

GP6<5>P17

PRU0_R30<9>/PRU0_R31<9>R15

PRU0_R30<10>/PRU0_R31<10>R19

PRU0_R30<11>/PRU0_R31<11>R18

PRU0_R30<12>/PRU0_R31<12>T16

PRU0_R30<13>/PRU0_R31<13>U19

PRU0_R30<14>/PRU0_R31<14>V19

PRU0_R30<15>/PRU0_R31<15>V18

GP6<6>V15

GP6<7>W14

SATA_REGN3

SATA_REFCLKNN1

SATA_REFCLKPN2

SATA_TXNJ2

SATA_TXPJ1

SATA_RXNL2

SATA_RXPL1

LCD_AC_ENB_CSR5

MMCSD1_DAT<4>/LCD_VSYNCG4

MMCSD1_DAT<5>/LCD_HSYNCH4

MMCSD1_DAT<6>/LCD_MCLKF2

MMCSD1_DAT<7>/LCD_PCLKF1

MMCSD0_CLKE9

USB1_DPP19

USB1_DMP18

USB0_VDDA12N17

USB0_DRVVBUSK18

USB0_VBUSN19

USB0_IDP16

USB0_DPM19

USB0_DMM18

RTC_ALARM/DEEPSLEEPF4

RTC_XoH19

RTC_XIJ19

oSCoUTK19

oSCINL19

CLKoUTT18

RTCK/GP8<0>K17

EMU1K16

EMU0J16

TRSTL17

TCKJ15

TDoJ18

TDIM16

TMS

L16

RESEToUT

T17

NMI

J17

RESET

K14

LC

D_D

<0>

W1

LC

D_D

<1>

W2

LC

D_D

<2>

W3

LC

D_D

<3>

V1

LC

D_D

<4>

V2

LC

D_D

<5>

V3

LC

D_D

<6>

U1

LC

D_D

<7>

U2

LC

D_D

<8>

/BooT

<0>

U3

LC

D_D

<9>

/BooT

<1>

T1

LC

D_D

<10>

/BooT

<2>

T2

LC

D_D

<11>

/BooT

<3>

T3

LC

D_D

<12>

/BooT

<4>

R1

LC

D_D

<13>

/BooT

<5>

R2

LC

D_D

<14>

/BooT

<6>

R3

LC

D_D

<15>

/BooT

<7>

P4

DD

R_D

QG

AT

E1

R12

DD

R_D

QG

AT

E0

R11

DD

R_B

A<

0>

V8

DD

R_B

A<

1>

T9

DD

R_B

A<

2>

U8

DD

R_D

QS

<1>

V11

DD

R_D

QS

<0>

T14

DD

R_D

QM

<1>

R10

DD

R_D

QM

<0>

W13

DD

R_C

S

V9

DD

R_C

AS

U9

DD

R_R

AS

W9

DD

R_W

E

T8

DD

R_C

KE

V7

DD

R_C

LK

N

W7

DD

R_C

LK

P

W8

DD

R_A

<0>

U7

DD

R_A

<1>

T7

DD

R_A

<2>

W6

DD

R_A

<3>

V6

DD

R_A

<4>

U5

DD

R_A

<5>

V5

DD

R_A

<6>

W5

DD

R_A

<7>

U6

DD

R_A

<8>

U4

DD

R_A

<9>

T6

DD

R_A

<10>

W4

DD

R_A

<11>

T4

DD

R_A

<12>

V4

DD

R_A

<13>

T5

DD

R_D

<0>

U15

DD

R_D

<1>

U14

DD

R_D

<2>

V14

DD

R_D

<3>

U13

DD

R_D

<4>

V13D

DR

_D

<5>

V12D

DR

_D

<6>

W12

DD

R_D

<7>

W11

DD

R_D

<8>

T13

DD

R_D

<9>

T11

DD

R_D

<10>

T10

DD

R_D

<11>

T12

DD

R_D

<12>

U10

DD

R_D

<13>

V10

DD

R_D

<14>

U11

DD

R_D

<15>

W10

AMUTE/UART2_RTS D5

AFSR C2

ACLKR A1

AHCLKR/UART1_RTS A2

AFSX B2

ACLKX B1

AHCLKX/USB_REFCLKIN/UART1_CTS A3

AXR0/ECAP0_APWM0/MII_TXD<0>/CLKS0 F3

AXR1/DX0/MII_TXD<1> E1

AXR2/DR0/MII_TXD<2> E2

AXR3/FSX0/MII_TXD<3> E3

AXR4/FSR0/MII_CoL D1

AXR5/CLKX0/MII_TXCLK D3

AXR6/CLKR0/MII_TXEN C1

AXR7 D2

AXR8/CLKS1/ECAP1_APWM1 E4

AXR9/DX1 C3

AXR10/DR1 D4

AXR11/FSX1 C5

AXR12/FSR1 C4

AXR13/CLKX1 B3AXR14/CLKR1 B4

AXR15/ECAP2_APWM2A4

GP8<12> G3

MMCSD1_CMD J4

MMCSD1_CLK G2

MMCSD1_DAT<0> G1

GP6<8> T15

GP6<9> U16

GP6<10> W15

GP6<11> U17

GP6<12> R16

GP6<13> R17

SPI1_SoMI H17

SPI1_SIMo G17

SPI1_SCS<7>/I2C0_SCL

G16

SPI1_SCS<6>/I2C0_SDA

G18

SPI1_SCS<5>/UART2_RXD

F17

SPI1_SCS<4>/UART2_TXD

F16

SPI1_SCS<3>/UART1_RXD

E18

SPI1_SCS<2>/UART1_TXD

F19

SPI1_SCS<1>F18

SPI1_SCS<0>E19

SPI1_ENA H16

SPI1_CLK G19

SPI0_SoMI/MII_RXER C16

SPI0_SIMo/MII_CRS C18

SPI0_SCS<5>/UART0_RXD/MII_RXD<3> C19

SPI0_SCS<4>/UART0_TXD/MII_RXD<2>

D18

SPI0_SCS<3>/UART0_CTS/MII_RXD<1>

E17

SPI0_SCS<2>/UART0_RTS/MII_RXD<0>

D16

SPI0_SCS<1>/MDIo_CLK

E16

SPI0_SCS<0>/MDIo_D

D17

SPI0_ENA/MII_RXDV

C17

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D19

EM

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10k

R643

100*4CP409

RK74HB1J100JCP302

4.7k*4

CP602

10*4

CP

40

5

10*4

CP

40

3

10*4

CP604

10*4

CP

40

4

100*4CP411

10

0*4

CP

40

6

100*4CP408

10

0*4

CP

40

7

RK74HB1J100JCP303

47*4

CP

41

347*4

CP

41

447*4

CP

41

2

4.7k*4

CP601

100*4

CP605

100*4

CP410

2.2k

CP402

10

k*4

CP

40

1

RK74HB1J100J

CP301

NC

U1

5W

F1

04

F6

ST

H2

03

-t

10

0k

NC

U1

5W

F10

4F

6S

TH

20

1

-t

10

0k

NC

U1

5W

F1

04

F6

S

TH

20

2

-t

10

0k

TH

40

1

-t

CN31

CN30

CN29CN93CN92CN28

CN

49

CN23CN24

CN22

CN

47

CN

46

CN

45

CN

44

CN

38

CN

42

CN

43

CN

41

CN

40

CN32

CN

39

CN

37

CN90

CN98

CN97

CN96

CN50

CN80CN75

CN74

CN78

CN76

CN91

CN77CN82

CN

83

CN81

CN

35

CN95

CN

48

CN89

CN25

CN87

CN

15

CN68

CN16

CN67

CN

14

CN

58

CN79

CN

60

CN

11

CN

21

CN18

CN61

CN

17

CN

13

CN55

CN

12

CN88

CN

59

CN20

CN27CN26

CN19

CN

52

CN

34

CN33

CN

53

CN

65

CN

70

CN71

CN

62

CN86

CN

69

CN72

CN

63

CN

64

CN94

CN

36

CN

51 C

N5

4

CN56

CN

66

CN

57

CN

85

AV

RM

10

27

0K

10

1

D6

17

D404

D405

SP

C1

05

01

A0

1 D406

SP

C1

05

01

A0

1

D402

D403

AVRM10270K101D616

VCC

oUTGND

VC

L7H-0076-00X401

L77-1802-05X402

SCHEMATIC DIAGRAM TX-RX UNIT (XC1-182K-00 (NX-3720H(G), NX-3720H, NX-3720(G), NX-3720))

A

1

B C D E F G

2

3

4

5

6

7

8

9

10

H I J K L M N O P Q(No.RA054<Rev.001>) 2-15

Page 184: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

PWR

R1

Destination

R3

R2

R4

$R1

$R11

*R4

*R3

$R12

$R13

$R14

R2

$R15

$R16

F2

F1

0

R4

-

R3

-

0

(F2:400-470)

K-01

(F1:450-520)

K-00

13.6V

+B$C

71

$C

70

100p

C26

470p

C22

25

1000u

C1

ST

70-2

7F

-572

D1

F53-0

286-0

5

F1

SBWTDIOSBWTCK

0

R24

CN

15

CN

14

CN

11

CN

21

CN

13

CN

12

$CN10

2200pC29

13

12

11

10

9

8

7

6

5

4

3

2

1

330

R7547k

R76

P_TXD2

/OVRB

P_RXD2

1u

C76

0.1

uC

16

10u

C14

D26

100k

R30

RB521CM-30

RB

520S

M-3

0D

21

100k

R23

R22

R25

22k

R26

100k

100k

P2.3

P2.4

P2.5

P1.6

P1.7

SBWTDlo

SBWTCK

P2.7

P2.6

P2.2

P2.1

P2.0

P1.5

A4

A3

TXD

RXD

P1.0DVSS

20

19

10

18

17

16

15

14

13

12

11

98

76

54

32

DVCC1

MSP430G2533P0

IC22

/BINT2

/PSW_OUT

/BINT

/OVRB_OUT

PWR_CNT

100k

R33

10kR34

CN

17

BAT_CNT

/IGN

/IGN_OUT

/PSW

RB521CM-30D27

3.1V

5.0V

12BU

31BUBATT CHK

50BU

31BU

0.1

uC

11

RB520SM-30D24

EDZV5.6BD13

Q15LSCR523EBFS8

Q16LSAR523UBFS8

47k

R31

0

R32

CN16

0.0

47u

C75

0.1

uC

74

1u

C18 0.4

7u

C17

STBY

3GND2

VIN

4VoUT1

BU31TD2WNVXIC13

1.2V32M

1u

C24

1u

C31

CN

3

VoU

T

3

VS

S

2

VIN

4

CE

1XC

6215B

122N

-GIC

15

1k

R28

13.6V

/OVRB(For MSP430)

SB1(HEAD/AFamp)

470p

C20

1u

C28

470pC21

1000p

C25

ED

ZV

18B

D20

FZA10BS-5R0F4

LTC014EEBFS8Q13

LTC014EEBFS8Q11

EMD9

Q25

TPCP8107-FQ12

10k

R29

10k

R27

470

R77

CN18

IGN

1000p

C27

0.0

1u

C19

0.1

uC

15

RB521CM-30D18

RB521CM-30D19

EDZV8.2BD22

NC

3

VIN

2

VS

S

4

VO

UT

1

XC

61C

N5002N

-G

IC18

LTC014TEBFS8Q14

100k

R21

3.3k

R78

3.3k

R79

3.3k

R80

19.2MHz

32M

FCNT

OSCGNDB

0.01u

C438

0.0

1u

C436

100p

C433

10

R423

1k

R420

22

R425

15k

R426

22

R424

0

R421

VCC

oUTGND

VC

L7H-0076-00X401

TEMP

0.0

1u

C418

LB73H0AV-003L402

100k

TH

401

-t

NC

U15W

F104F

6S

0.01u

C447

1u

C462

0.0

1u

C450

5p

C454

100p

C445

(-39)4.7u

L404

Q4012SC4617/S/

10

R428

33k

R427

680

R429

$R

430

For RVDD,USBFor CVDD

12M

_1

12M

_1

0.1

uC

428

0.1

uC

441

0.1

uC

434

0.1

uC

444

0.1

uC

443

0.1

uC

431

0.1

uC

424

22u

C421

10u

C439

For DVDD IO For DVDD IO For USB

32M

_1

32M

_1

32M

_1

0.1

uC

425

0.1

uC

429

0.1

uC

448

0.1

uC

451

0.1

uC

442

0.1

uC

440

10u

C437

10u

C446

10u

C422

For DDR_DVDD

For DVDD IO

18M

_1

18M

_2

0.1

uC

471

0.1

uC

470

0.1

uC

469

0.1

uC

468

0.1

uC

463

0.1

uC

466

0.1

uC

464

0.1

uC

455

0.1

uC

461

0.1

uC

457

0.1

uC

458

0.1

uC

459

0.1

uC

467

0.1

uC

465

0.1

uC

460

10u

C452

10u

C456

10u

C453

10u

C449

1.8V

12BU

18M

12M

LB

73G

0A

K-0

01

L403

0.1

uC

419

0.1

uC

427

0.1

uC

420

0.1

uC

430

0.1

uC

432

0.1

uC

435

0.1

uC

426

0.1

uC

423

22u

C4

17

18M

DD

RM

_B

A[1

]

DD

RM

_D

QM

[0]

DD

RM

_A

[0]

DD

RM

_A

[12]

DD

RM

_A

[6]

DD

RM

_A

[9]

DD

RM

_D

[9]

DD

RM

_D

QS

[1]

DD

RM

_D

[13]

DD

RM

_B

A[0

]

DD

RM

_A

[2]

DD

RM

_A

[1]

DD

RM

_A

[13]

DD

RM

_C

KE

DD

RM

_C

LK

P

DD

RM

_A

[10]

DD

RM

_C

AS

DD

RM

_D

[3]

DD

RM

_D

[10]

DD

RM

_A

[8]

DD

RM

_D

[15]

DD

RM

_R

AS

DD

RM

_A

[4]

DD

RM

_D

[11]

DD

RM

_D

QM

[1]

DD

RM

_D

[8]

DD

RM

_D

[2]

DD

RM

_D

[5]

DD

RM

_A

[3]

DD

RM

_C

LK

N

DD

RM

_D

[6]

DD

RM

_D

[1]

DD

RM

_A

[7]

DD

RM

_W

E

DD

RM

_A

[5]

DD

RM

_D

[7]

DD

RM

_D

[14]

DD

RM

_A

[11]

DD

RM

_D

[4]

DD

RM

_D

[12]

DD

RM

_D

QS

[0]

DD

RM

_D

[0]

DD

RM

_C

S

VSSQ5 E1

VSSQ1 D9

VSSQ4 C1

VSSQ3 B9

VSSQ2 A3

VSS3 K1

VSS2 F1

VSS1 A1

VDDQ5E9

VDDQ4D1

VDDQ3C9

VDDQ2B1

VDDQ1A7

VDD3K9

VDD2F9

VDD1A9

A12

H3

NC

1

F7

NC

2

F3

UD

QS

E2

LD

QS

E8

DQ

15

A2

DQ

14

B3

DQ

13

B2

DQ

12

C3

DQ

11

C2

DQ

10

D3

DQ

9

D2

DQ

8

E3

DQ

7

E7

DQ

6

D8

DQ

5

D7

DQ

4

C8

DQ

3

C7

DQ

2

B8

DQ

1

B7

DQ

0

A8

UD

M

F2

LD

M

F8

WE

G7

CA

S

G8

RA

S

G9

BA

1

H9

BA

0

H8

CS

H7

CK

E

G1

CK

G2

CK

G3

A11

H2

A10/A

P

J7

A9

H1

A8

J3

A7

J2

A6

J1

A5

K3

A4

K2

A3

K8

A2

K7

A1

J9

A0

J8

IC402

FlashROM 512Mb

/FRST = OPEN DRAIN

/WP internal Pull-Up

18M_1

DA

TA

[0]

18M_3

DA

TA

[15]

/CS

2

AD

D[1

9]

AD

D[1

4]

DA

TA

[12]

AD

D[1

6]

DA

TA

[1]

AD

D[1

7]

DA

TA

[7]

AD

D[2

1]

AD

D[0

]

AD

D[7

]

32M

DA

TA

[10]

DA

TA

[13]

/WR

DA

TA

[9]

/WP

AD

D[1

1]

AD

D[1

3]

DA

TA

[14]

DA

TA

[6]

AD

D[8

]

AD

D[1

]

AD

D[2

0]

DA

TA

[2]

AD

D[2

]

/CS

_F

AD

D[3

]

DA

TA

[4]

DA

TA

[11]

DA

TA

[5]

AD

D[9

]

DA

TA

[8]

AD

D[2

3]

AD

D[6

]

AD

D[1

8]

AD

D[5

]

AD

D[2

2]

AD

D[1

5]

/OE

AD

D[1

2]

/FR

ST

AD

D[4

]

AD

D[1

0]

DA

TA

[3]

1u

C478

1u

C414 0.1

uC

415

0.1

uC

477

0.1

uC

476

0.1

uC

416

RB521CM-30

D401

VSS1E8VSS2

H2VSS3

H7

VCCG5

NC

1

A1

NC

2

A8

RF

U1

B1

RF

U2

C1

RF

U3

D1

NC

3

H1

NC

4

H8

RY

/BY

A4

RF

U4

E1

BY

TE

F7

RF

U5

G1

DQ

15

/A-1

G7

DQ

14

F6

DQ

13

G6

DQ

12

F5

DQ

11

G4

DQ

10

F4

DQ

9

G3

DQ

8

F3

DQ

7

E6

DQ

6

H6

DQ

5

E5

DQ

4

H5

DQ

3

H4

DQ

2

E4

DQ

1

H3

DQ

0

E3

VIo

2

D8

VIo

1

F1

WP

/AC

C

B4

RE

SE

T

B5

WE

A5

oE

G2

CE

F2

A25

G8

A24

F8

A23

C8

A22

B8

A21

C5

A20

D4

A19

D5

A18

C4

A17

B3

A16

E7

A15

D7

A14

C7

A13

A7

A12

B7

A11

D6

A10

C6

A9

A6

A8

B6

A7

A3

A6

C3

A5

D3

A4

B2

A3

A2

A2

C2

A1

D2

A0

E2

IC401

LB

73G

0A

K-0

01

L401

100k

R431

100k

R432

4.7

k

R433

CN

83

CN

52

CN

53

CN

51 C

N54

/CS

3

1.8V

/FR

ST

/WP

/CS

_F

/CS

2

0.1uC479

VCC5

oUTY4 GND 3

INA 2

INB 1

TC7SZ08FE

IC403

LB73G0AK-001

L413

/FLDMLOW = UART OR USB LOADER

AD

D[6

]

GP

SB

T_D

ET

BT

_S

W

/FLD

M

/OE

/CS

2

/CS

4

AS

TS

W

/CS

3

AD

D[9

]

AD

D[1

0]

AD

D[7

]

AD

D[2

]

AD

D[8

]

AD

D[4

]

AD

D[3

]

AD

D[1

1]

/WR

AD

D[0

]

AD

D[1

]

AD

D[5

]

1k

R462CN68

CN67

CN

85

/CS2/CS3

DA

TA

[9]

DA

TA

[4]

DA

TA

[6]

AD

D[1

5]

AD

D[1

8]

DA

TA

[15]

DA

TA

[10]

DA

TA

[8]

DA

TA

[11]

DA

TA

[12]

DA

TA

[7]

AD

D[1

6]

AD

D[1

9]

DA

TA

[13]

AD

D[1

4]

DA

TA

[1]

AD

D[1

7]

AD

D[1

3]

DA

TA

[3]

AD

D[2

2]

AD

D[2

1]

AD

D[2

0]

AD

D[1

2]

AD

D[2

3]

DA

TA

[14]

DA

TA

[0]

DA

TA

[2]

DA

TA

[5]

19.2M32k_I

32k_O

USB0_DPUSB0_DM RTCGNDG

15pC481

18pC480$C401 0

R437

1M

R436

CN55

L77-1802-05X402

CTS2

UMode

50A

0

R434

0.1

u

C482

0.22uC483

CN56

SYMTIM_IN

/DCR_RST

DM_OUT

DM_IN

ASSW

PWR_CNT

GPS_ANT_SW

AGCKEEP

32M

/INT_IO 10k

R435

CN98

CN86

TDI

TDO

/TRST

TMS

TCK$C

N9

19.2M

/RST

MCLK10

9

8

7

6

5

4

3

2

1

10R422

BE

R_E

N

/PS

W_O

UT

/IG

N_O

UT

PA

_M

UT

E

/BIN

T2

PLD

SB

C

/OV

RB

_O

UT

10k*4

CP

401

BO

OT

[2]

BO

OT

[3]

BO

OT

[0]

BO

OT

[7]

BO

OT

[6]

BO

OT

[5]

BO

OT

[1]

BO

OT

[4]

12BU_1

18M_2

18M_1

32M_1

PLL1_VDDA

12M_1

PLL0_VDDA

32M_1

18M_1

32M_1

12

M_

1

12M_1

18

M_

1

OSCGNDB

PLL0GNDE

PLL1GNDFRTCGNDG

0.1uC485

0.1

uC

48

6DVDD3318_C10

R4

DVDD3318_C9

P12

DVDD3318_C8

P6

DVDD3318_C7

P5

DVDD3318_C6

N13

DVDD3318_C5

M13

DVDD3318_C4L13

DVDD3318_C3L4

DVDD3318_C2K13

DVDD3318_C1J5

DVDD3318_B11K15

DVDD3318_B10J14

DVDD3318_B9G9

DVDD3318_B8F13

DVDD3318_B7F12

DVDD3318_B6F11

DVDD3318_B5F10

DVDD3318_B4F8

DVDD3318_B3F7

DVDD3318_B2F6

DVDD3318_B1E14

DVDD3318_A6H5

DVDD3318_A5G15

DVDD3318_A4G14

DVDD3318_A3G5

DVDD3318_A2F15

DVDD3318_A1F5

DV

DD

18

_1

0

R13

DV

DD

18

_9

P13

DV

DD

18

_8

L6

DV

DD

18

_7

K5

DV

DD

18

_6

J13

DV

DD

18

_5

G12

DV

DD

18

_4

G11

DV

DD

18

_3

G10

DV

DD

18

_2

G6

DV

DD

18

_1

F14

RV

DD

3

N7

RV

DD

2

H14

RV

DD

1

E5

CV

DD

18

N8

CV

DD

17

M9

CV

DD

16

M8

CV

DD

15

L12

CV

DD

14

K12

CV

DD

13

K6

CV

DD

12

J12

CV

DD

11

J6

CV

DD

10

H13

CV

DD

9

H12

CV

DD

8

H11

CV

DD

7

H10

CV

DD

6

H7

CV

DD

5

H6

CV

DD

4

G13

CV

DD

3

G8

CV

DD

2

G7

CV

DD

1

E15

NC3

M3

RSV2

T19

SATA_VDD4

N4

SATA_VDD3

P2

SATA_VDD2

P1

SATA_VDD1 M2

SATA_VDDR P3

USB_CVDDM12

USB1_VDDA18 P14

USB1_VDDA33 P15

USB0_VDDA18 N14

USB0_VDDA33 N18

DDR_DVDD18_10 R9

DDR_DVDD18_9 R8

DDR_DVDD18_8 R7

DDR_DVDD18_7 P10

DDR_DVDD18_6 P9

DDR_DVDD18_5 P8

DDR_DVDD18_4 P7

DDR_DVDD18_3 N10

DDR_DVDD18_2 N9

DDR_DVDD18_1 N6

DDR_VREF

R6

DDR_ZP

U12

RTC_CVDD

L14

PLL1_VDDA

N15

PLL0_VDDA

L15

VS

S3

0

P11

VS

S2

9

N12

VS

S2

8

N11

VS

S2

7

N5

VS

S2

6

M11

VS

S2

5

M10

VS

S2

4

M7

VS

S2

3

M6

VS

S2

2

M5

VS

S2

1

M4

VS

S2

0

L11

VS

S1

9

L10

VS

S1

8

L9

VS

S1

7

L8

VS

S1

6

L7

VS

S1

5

L5

VS

S1

4

K11

VS

S1

3

K10

VS

S1

2

K9

VS

S1

1

K8

VS

S1

0

K7

VS

S9

J11

VS

S8

J10

VS

S7

J9

VS

S6

J8

VS

S5

J7

VS

S4

H15

VS

S3

H9

VS

S2

H8

VS

S1

A19

NC

2

N16

NC

1

M14

SA

TA

_V

SS

6

M1

SA

TA

_V

SS

5

L3

SA

TA

_V

SS

4

K2

SA

TA

_V

SS

3

K1

SA

TA

_V

SS

2

H2

SA

TA

_V

SS

1

H1

RT

C_

VS

S

H18

PL

L1

_V

SS

A

M15

PL

L0

_V

SS

A

M17

oS

CV

SS

L18

PRU1_R30<0>/PRU1_R31<1>

K4

MMCSD1_DAT<1>/PRU1_R30<1>/PRU1_R31<2>

J3

MMCSD1_DAT<2>/PRU1_R30<2>/PRU1_R31<3>

K3

MMCSD1_DAT<3>/PRU1_R30<3>/PRU1_R31<4>

H3

RMII_CRS_DV/PRU1_R31<29>

W19

RMII_MHZ_50_CLK/PRU0_R31<23>

W18

RMII_RXER/PRU0_R31<24>W17

RMII_RXD<0>/PRU0_R31<25>V17

RMII_RXD<1>/PRU0_R31<26>W16

RMII_TXEN/PRU0_R31<27>R14

RMII_TXD<0>/PRU0_R31<28>V16

RMII_TXD<1>/PRU0_R31<29>U18

GP6<5>P17

PRU0_R30<9>/PRU0_R31<9>R15

PRU0_R30<10>/PRU0_R31<10>R19

PRU0_R30<11>/PRU0_R31<11>R18

PRU0_R30<12>/PRU0_R31<12>T16

PRU0_R30<13>/PRU0_R31<13>U19

PRU0_R30<14>/PRU0_R31<14>V19

PRU0_R30<15>/PRU0_R31<15>V18

GP6<6>V15

GP6<7>W14

SATA_REGN3

SATA_REFCLKNN1

SATA_REFCLKPN2

SATA_TXNJ2

SATA_TXPJ1

SATA_RXNL2

SATA_RXPL1

LCD_AC_ENB_CSR5

MMCSD1_DAT<4>/LCD_VSYNCG4

MMCSD1_DAT<5>/LCD_HSYNCH4

MMCSD1_DAT<6>/LCD_MCLKF2

MMCSD1_DAT<7>/LCD_PCLKF1

MMCSD0_CLKE9

USB1_DPP19

USB1_DMP18

USB0_VDDA12N17

USB0_DRVVBUSK18

USB0_VBUSN19

USB0_IDP16

USB0_DPM19

USB0_DMM18

RTC_ALARM/DEEPSLEEPF4

RTC_XoH19

RTC_XIJ19

oSCoUTK19

oSCINL19

CLKoUTT18

RTCK/GP8<0>K17

EMU1K16

EMU0J16

TRSTL17

TCKJ15

TDoJ18

TDIM16

TMS

L16

RESEToUT

T17

NMI

J17

RESET

K14

LC

D_D

<0>

W1

LC

D_D

<1>

W2

LC

D_D

<2>

W3

LC

D_D

<3>

V1

LC

D_D

<4>

V2

LC

D_D

<5>

V3

LC

D_D

<6>

U1

LC

D_D

<7>

U2

LC

D_D

<8>

/BooT

<0>

U3

LC

D_D

<9>

/BooT

<1>

T1

LC

D_D

<10>

/BooT

<2>

T2

LC

D_D

<11>

/BooT

<3>

T3

LC

D_D

<12>

/BooT

<4>

R1

LC

D_D

<13>

/BooT

<5>

R2

LC

D_D

<14>

/BooT

<6>

R3

LC

D_D

<15>

/BooT

<7>

P4

DD

R_D

QG

AT

E1

R12

DD

R_D

QG

AT

E0

R11

DD

R_B

A<

0>

V8

DD

R_B

A<

1>

T9

DD

R_B

A<

2>

U8

DD

R_D

QS

<1>

V11

DD

R_D

QS

<0>

T14

DD

R_D

QM

<1>

R10

DD

R_D

QM

<0>

W13

DD

R_C

S

V9

DD

R_C

AS

U9

DD

R_R

AS

W9

DD

R_W

E

T8

DD

R_C

KE

V7

DD

R_C

LK

N

W7

DD

R_C

LK

P

W8

DD

R_A

<0>

U7

DD

R_A

<1>

T7

DD

R_A

<2>

W6

DD

R_A

<3>

V6

DD

R_A

<4>

U5

DD

R_A

<5>

V5

DD

R_A

<6>

W5

DD

R_A

<7>

U6

DD

R_A

<8>

U4

DD

R_A

<9>

T6

DD

R_A

<10>

W4

DD

R_A

<11>

T4

DD

R_A

<12>

V4

DD

R_A

<13>

T5

DD

R_D

<0>

U15

DD

R_D

<1>

U14

DD

R_D

<2>

V14D

DR

_D

<3>

U13

DD

R_D

<4>

V13

DD

R_D

<5>

V12

DD

R_D

<6>

W12

DD

R_D

<7>

W11

DD

R_D

<8>

T13

DD

R_D

<9>

T11

DD

R_D

<10>

T10

DD

R_D

<11>

T12

DD

R_D

<12>

U10

DD

R_D

<13>

V10

DD

R_D

<14>

U11

DD

R_D

<15>

W10

AMUTE/UART2_RTS D5

AFSR C2

ACLKR A1

AHCLKR/UART1_RTS A2

AFSX B2

ACLKX B1

AHCLKX/USB_REFCLKIN/UART1_CTS A3

AXR0/ECAP0_APWM0/MII_TXD<0>/CLKS0 F3

AXR1/DX0/MII_TXD<1> E1

AXR2/DR0/MII_TXD<2> E2

AXR3/FSX0/MII_TXD<3> E3

AXR4/FSR0/MII_CoL D1

AXR5/CLKX0/MII_TXCLK D3

AXR6/CLKR0/MII_TXEN C1

AXR7 D2

AXR8/CLKS1/ECAP1_APWM1 E4

AXR9/DX1 C3

AXR10/DR1 D4

AXR11/FSX1 C5

AXR12/FSR1 C4

AXR13/CLKX1 B3AXR14/CLKR1 B4

AXR15/ECAP2_APWM2A4

GP8<12> G3

MMCSD1_CMD J4

MMCSD1_CLK G2

MMCSD1_DAT<0> G1

GP6<8> T15

GP6<9> U16

GP6<10> W15

GP6<11> U17

GP6<12> R16

GP6<13> R17

SPI1_SoMI H17

SPI1_SIMo G17

SPI1_SCS<7>/I2C0_SCL

G16

SPI1_SCS<6>/I2C0_SDA

G18

SPI1_SCS<5>/UART2_RXD

F17

SPI1_SCS<4>/UART2_TXD

F16

SPI1_SCS<3>/UART1_RXD

E18

SPI1_SCS<2>/UART1_TXD

F19

SPI1_SCS<1>F18

SPI1_SCS<0>E19

SPI1_ENA H16

SPI1_CLK G19

SPI0_SoMI/MII_RXER C16

SPI0_SIMo/MII_CRS C18

SPI0_SCS<5>/UART0_RXD/MII_RXD<3> C19

SPI0_SCS<4>/UART0_TXD/MII_RXD<2>

D18

SPI0_SCS<3>/UART0_CTS/MII_RXD<1>

E17

SPI0_SCS<2>/UART0_RTS/MII_RXD<0>

D16

SPI0_SCS<1>/MDIo_CLK

E16

SPI0_SCS<0>/MDIo_D

D17

SPI0_ENA/MII_RXDV

C17

SPI0_CLK/MII_RXCLK

D19

EM

A_

WA

IT<

1>

B19

EM

A_

WA

IT<

0>

B18

EM

A_

oE

B15

EM

A_

WE

N_

DQ

M<

0>

C8

EM

A_

WE

N_

DQ

M<

1>

A5

EM

A_

WE

B9

EM

A_

A_

RW

D10

EM

A_

CS

<5

>

B16

EM

A_

CS

<4

>

F9

EM

A_

CS

<3

>

A17

EM

A_

CS

<2

>

B17

EM

A_

CS

<0

>

A18

EM

A_

CA

S

A9

EM

A_

RA

S

A16

EM

A_

SD

CK

E

D8

EM

A_

CL

K

B7

EM

A_

BA

<1

>

A15

EM

A_

BA

<0

>

C15

EM

A_

A<

0>

C14

EM

A_

A<

1>

D15

EM

A_

A<

2>

B14

EM

A_

A<

3>

D14

EM

A_

A<

4>

A14

EM

A_

A<

5>

C13

EM

A_

A<

6>

E13

EM

A_

A<

7>

B13

EM

A_

A<

8>

A13

EM

A_

A<

9>

D12

EM

A_

A<

10

>

C12

EM

A_

A<

11

>

B12

EM

A_

A<

12

>

D13

EM

A_

A<

13

>

D11

EM

A_

A<

14

>/M

MC

SD

0_

DA

T<

7>

A12

EM

A_

A<

15

>/M

MC

SD

0_

DA

T<

6>

C11

EM

A_

A<

16

>/M

MC

SD

0_

DA

T<

5>

E12

EM

A_

A<

17

>/M

MC

SD

0_

DA

T<

4>

B11

EM

A_

A<

18

>/M

MC

SD

0_

DA

T<

3>

E11

EM

A_

A<

19

>/M

MC

SD

0_

DA

T<

2>

C10

EM

A_

A<

20

>/M

MC

SD

0_

DA

T<

1>

A11

EM

A_

A<

21

>/M

MC

SD

0_

DA

T<

0>

B10

EM

A_

A<

22

>/M

MC

SD

0_

CM

D

A10

EM

A_

D<

0>

C9

EM

A_

D<

1>

A8

EM

A_

D<

2>

B8

EM

A_

D<

3>

E8

EM

A_

D<

4>

B5

EM

A_

D<

5>

E7

EM

A_

D<

6>

C6

EM

A_

D<

7>

D7

EM

A_

D<

8>

E10

EM

A_

D<

9>

D9

EM

A_

D<

10

>

A7

EM

A_

D<

11

>

D6

EM

A_

D<

12

>

A6

EM

A_

D<

13

>

B6

EM

A_

D<

14

>

C7

EM

A_

D<

15

>

E6

IC404

1kR486

1kR485

49.9R483

3.2V

1.8V

1.8V18M_1

32M_1

18M_2L411

L410

LB73G0AK-001

L412

1.2V

1.2V

1.2V

1.2V

12BU_1

PLL1_VDDA

12M_1

PLL0_VDDA

PLL0GNDE

PLL1GNDF

RTCGNDG

0.1

uC

490

0.1

u

C4

74

0.1

u

C475

0.1

u

C4

72

0.1

u

C473

LB73G0AM-004

L405

L92-1101-05L420

L92-1101-05

L409

L408

L406

L407

32M

18M

22

R444

CN61 BOOT PIN

Emulation Debug BOOT = 00011110

For Production line

UART BOOT=10010111

CN941 CN922 CN923 CN924 CN925

PLL_CLK

2.2

k

R441

2.2

k

R440

2.2

k

R439

2.2

kR

438

CN

58

CN

60

CN

59

CN

65

CN

62

CN

63

CN

64

CN

66

CN

57

2.2k

CP402

32M

50A

DC

R_A

CLK

DC

R_D

DO

/DC

R_D

CS

/DC

R_A

CS

DC

R_A

DI

BC

LK

PLD

DC

R_D

ID

CR

_D

O/D

CR

_C

S

AG

CK

EE

PT

XR

X

/DC

R_R

ST

50C

0.1uC336

100pC33510

R322

RK74HB1J100J

CP301

CN

47

CN

46

CN

45

CN

44

CN

43

CP

VC

O_M

OD

CP

Z

50C

100p

C332

0.1uC330

100pC329

0.1uC3280.4

7u

C345

10u

C344

10u

C346

100p

C343

470p

C338

1u

C327

0

R304

(D)

27k

R319

0R

326

AK2401

VSS4

53

DA_FS52

AD_FS51

AD_SDo50

AD_SCLK49

DVDD48

LD47

SDATAo46

SCLK45

SDATAI44

CSN43

AGC_KEEP42

TX_PDN41

RX_PDN40

RS

TN

39

VC

oM

_A

D

38

AD

VD

D

37

AD

VS

S

36

TE

ST

2

35

AoU

T_N

34

AoU

T_P

33

RX

VD

D

32

BIA

S1

31

LN

AV

DD

30

LN

AC

oN

T

29

LN

AIN

28

VS

S3

27

VSS2 26

LNAoUT 25

DEMVDD 24

DEMIN 23

VSS1 22

LoVDD 21

RFoUTN 20

RFoUTP 19

LoIN 18

LoDVDD 17

CPZ 16

SWIN 15

CP 14

CP

VD

D

13

SY

NV

DD

12

SY

NV

SS

11

VR

EF

2

10

TC

XoIN

9

VR

EF

1

8

DA

CV

DD

7

SM

FoU

T

6

BIA

S2

5

TE

ST

1

4

DA

_S

DI

3D

VS

S2

DA

_S

CLK

1

IC302

LR

79G

0C

Q39N

G

39n

L307 R

311

RK

73H

H1J391D

390

100pC326

$C348

0.1

uC

347

100pC325

2p

C307

$C

301

3p

C334

15p

C333

$C

302

$C

303

100p

33n

L312

$L301

LK73H0AM33NJ

33nL302

LK

73H

0A

MR

27J

270n

L314

150

R325

100

R305

100

R308

0.01uC324

C323

470p

C306

5.6

R312

820

R303

820

R302

470p

C341

LR79G0CQ22NG

22nL305

LR79G0CQ3N9C

3.9nL3064p

C312

RK

73H

H1J473D

47k

R317

CN

49

CN

48

470pC313

0.01uC314

1u

C315

3.2V

10u

C321

100p

C322

2.2

u

C342 1u

C316

0.1u

C340

1u

C73

0

R321

470k

R316

32C

50C

SB

C

SBC

1u

C72

CE3 VSS 2

VIN4 VoUT 1

XC6223D321G-GIC19

LB73H0AV-002L18

10R323

10R324

1k

R320

RK74HB1J100JCP302

RK74HB1J100JCP303

CN

38

CN

42

CN

41

CN

40

CN

39

CN

37

CN

35

CN

34

CN

36

SB2(9Vreg/D-sub)

31BU

/OVRB

SB1

BLVL

SB2

SBC

+B

/IGN

1000p

C56

1000p

C47

1S

S400S

M

D15

100k

R50

2.2

kR

62

220k

R49

CN20

5.0V50C54M

470p

C39

2.2

u

C4650

1uC41

CE

3 VSS 2

VIN

4 VoUT 1

XC6221D501G-GIC23

0

R42

13.6V

470pC42

470p

C36

FZA10BS-5R0F5

LTC014EEBFS8Q18

TPCP8107-F

Q17

10kR47

10k

R44

3.2V

32A

470p

C51

16

1u

C43

50

1u

C33

50

1uC

50

VoU

T

3

GN

D

2

VIN

4

CoN

TR

oL

1

NJM

2878F

4-3

2IC

17

LB73H0AV-002L17

0

R54

1k

R38

5.0V

18M SWLoad Switch

50A

32A12BU

50A

2.2

u

C55

CE3 VSS 2

VIN4 VoUT 1

XC6221D501G-GIC26

3.2V

1.8V

/RST

18M_3

32M

0.1

u

C49 CE

3 VSS 2

VIN

4 VoUT 1

XC8102AA07-GIC21

47kR53

32M

100p

C504

0.1

u

C35

2.2

u

C44

50

1u

C37

RB521CM-30

D14V

oU

T

5

VIN

4

CE

3

VS

S

2

NC

1XC

6223D

321P

-GIC

20

LB73G0AK-001

L16

10k

R39

4.7

kR

37

100

R538

1.2V

12M

10u

C40

10u

C38

4.7

u

C52

GN

D_3

9

GN

D_2

8

EN7

VIN_2

6VIN_1

5

GND_1

4

VoUT_2 3

VoUT_1 2

MoDE 1

LXDC2XQ12A-252IC24

LB

73G

0A

K-0

01

L11

LB

73G

0A

K-0

01

L19

VT6M1

Q19

100

R48

1k

R55

1k

R35

100k

R36

100k

R51

100k

R52

100k

R57

47k

R40

1.8V

18M

12M

18M

10u

C57

VoUT

3EN2

GND

4VIN1

LXDC2HN18F163IC12

50

4.7

uC

30

50

4.7

uC

34

50

4.7

uC

32

MP2560DQ-LF-Z

54M

EXPOSED11

BS

T

10

VIN

_2

9

VIN

_1

8

FR

EQ

7

GN

D

6

FB

5

CoM

P

4

EN

3

SW

_2

2

SW

_1

1

IC25

(D)10k

R61

(D)150k

R59

(D)11k

R46

(D)47k

R45

(D)11k

R60

(D)30kR58

25

0.1

uC45

LB73G0AM-004L15

5.4V10uL12

100p

C48

$C

1316

10u

C541

610u

C53

RB

060M

-40

D16

LB73G0AM-004L13

120k

R56

11k

R63

BA

T_C

NT

100

R43

22kR41

CN19

54M DC/DC SHIELD CASE

+B

54M

F1B-0085-00E11

4p

C101

*L118

*C137

47p

C138

150

R143

VCO Buffer

$C

106

470p

C134

9p

C131

7p

C133

9p

C132

2p

C128 0.5

pC

129

0.5pC135

100p

C136

220pC127

SM

V1130-0

79LF

D108

L41-2

785-5

3270n

L113 L41-2

785-5

3270n

L116

L41-2785-53

270n

L115

LB

73H

0A

Y-0

04

L117

L34-4610-1535.5n

L7

Q1062SC5108FT/Y/

Q105

MC

H3914-H

/8/ 0

R139

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3270n

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0

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10k

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220

R1200

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RK73HH1J391D390

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Tripler

4.2V

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100p

C117

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2SC5108FT/Y/

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R111

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22

R147

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kR

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126

*R130

270

R214

270

R217

15pC216

15pC218

5p

C217

2p

C201

5p

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(-71)15n

L209 22R218

39

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39

R215

Pre-Drive

470p

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0.0

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100p

C223

CUR_ADJ

6

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5

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4RF_IN3

NC2

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1k

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470p

C224

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C226

5p

C228

10p

C227

8p

C230

22p

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8.2n

L213

15n

L211LK73H0AM15NJ

15n

L212

270

R225

270

R222

39

R224

39

R223

47

R226

Drive

Q201RFM01U7PF

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C234

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73F

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150

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2pC274

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(-53)

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273

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24939

R24339

R240

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252

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R239

270

R242

470pC241

LB

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04

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L219

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TX Low power:3.7VTX High power:4.2V

Gate

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s 2

Gate

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s 1

+B

$C

215

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0

R280

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C245

100p

C244

22p

C242

47p

C243 2

5470u

C5

27p

C250

(-53)

47nL222

390

R256

*R262

$R

206

56

R268

56

R281

$R

205

100p

C249

100p

C247

RF

_oU

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4

VD

D

3

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G

2

RF

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1

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F2:RA60H3847-501

F1:RA60H4452-501

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27p

C256

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*R272

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$C

206

470pC254

RB

706F

-40

D204

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0

R270

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C257

470p

C255

56

R2771/2

W

56

R276

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T

L34-4

848-0

5

L6

470p

C258

*C259

L8104

D205

L8104D206

LR79G0GK82NG

82n

L224

C93-1932-05

100pC262

1.5

TL34-4

743-0

5L5

TX:0.9VRX:0V

RX

4p

C261

RN

142S

D209

L8104

D207

RN

142S

D208

LR79G0GK3N9B3.9n

L227

$C

209

6.0

p

C268

9.5

TL34-4

902-0

5

L1

*L2

*C265

$C

208

*C264

*C267

2.5T

L34-4758-05L3

2.5T

L34-4758-05L4

ANT0

R5

TH1

47p

C237

LB

73H

0A

V-0

03

L217

$R

201

100k

NC

U15W

F104F

6S

TH

201

-t

TH2

47p

C266

$R

210 100k

NC

U15W

F104F

6S

TH

202

-t

0.1

u

C260

VPoS

8

VAPC

7

NC

6

CoMM

5FLTR4

VSET3

ENBL2

RFIN1

AD8315ARMIC205

LB73H0AY-004L225 L

B73H

0A

V-0

03

L226

-t

470pC270

3.9k

R267

33k

R282

NC

U15W

F104F

6S

TH

203

90T

90ANT

DE

T

FWD

$R

264

$C

240

$C

248

V+8

BoUTPUT7

B-INPUT6

B+INPUT5

V-

4

A+INPUT

3

A-INPUT

2

AoUTPUT

1

$IC204

$R

237

$R

234

$R

236

$R254

$C246

4700p

C263

22k

R259

270k

R266

120k

R260

0

R203

22k

R265

47p

C236

15k

R251

22k

R245

22k

R244

120k

R250

AP

C1

+B

4700p

C239

Q204LSCR523EBFS8

10k

R247

2.2

kR

230 2.7k

R24147k

R229

CN31

Ram

p_O

ffset

120p

C213

0.0

1u

C2141

k

R271

$R

232

18k

R273

22k

R275

22k

R274

10k

R213

470p

C271

470p

C272

$C210EMD9Q205

RE

V

TX

PW

R_H

_/L

SP

C

50C

T

50C

T

TH

P2L

B73H

0A

Y-0

04

L208

CN30

CN32

50C

T

470p

C251

0.1

u

C252

RN142SD202

47

R261

$R

208

470R258

90T

470p

C232

100p

C231

2.2

k

R227

3.9k

R228

$C

203

$C

269

$C

204

ED

ZV

5.6

B

D201

$D

203$Q203

Q202LSCR523EBFS8

$R263

2.2k

R231

$R253

22k

R235

$R

255

270

R248

$R

257

47

R238

$R

202

0

R204

TX:9.0VRX:0V

90T

/DS

W

TX

C

AN

TS

W

LTC014EEBFS8Q23

4.7

k

R72

CN29CN93CN92

Q20SSM3J334R

10k

R71

47p

C67

Q22SSM3J334R

LTC014EEBFS8

Q21

10k

R73

4.7

k

R74

9.0V

90C

AD

J

5

VoU

T

4

GN

D

3

VC

C

2

CT

L

1

BA00DD0WHFPIC1

5.0V

50CT

16

1uC68

0.1

uC

66

16

2.2

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47u

C65

25

4.7

uC

64

VoU

T

5

VIN

4

CE

3

VS

S

2

NC

1XC

6209B

502P

-GIC

16

1k

R69

(D)

1.5

k

R83

(D)

27k

R70

(D)

4.7

kR84 3.3

R82

2.7

R81

470pC212

16

1uC

211

LB

73H

0A

Y-0

04

L207

VT

6M

1Q

206

1kR212

470k

R211

0

R278

20V DC/DC

50C

390p

C62

390p

C61 CK

730F

A1H

475K

4.7

uC

63

10u

C58

10u

C59

CK

73F

XR

1E

475K

4.7

uC

60

RB561VM-40D17

SW

6

NC

5

FB

4EN3

VIN2

GND1

TPS61041DRVRIC14

LR79Z0AA150M

15uL14 10R68

22k

R67

330k

R6610

R65R92-3769-0510

R64

19.6V

CV

AS

TS

W

VC

O_M

OD

AS

SIS

T

200C

200C

CV

0.0

1u

C108

CC730AD1H104J0.1uC116

100p

C110

100p

C112

33pC109

1u

C111

ED

ZV

8.2

BD

101

V+

8

BoU

TP

UT

7

B-I

NP

UT

6

B+

INP

UT

5

V-

4

A+

INP

UT

3

A-I

NP

UT

2

AoU

TP

UT

1

NJM

2904C

RB

1IC

101

EM6M2Q103

0R

117

$R

102

1k

R112

1k

R113

100k

R122

100k

R128

10MR125

12k

R132

120kR115

2.2

kR

119

22k

R114

47

R127

4.7

kR

121

CN23

CN22

CN25

5.0V

50C

16

10u

C130

100p

C125

1S

S400S

M

D107

LB73H0AY-004

L119

Q1042SD2654/W/

47k

R134 47k

R133

10k

R135

CN24

AT

T_S

W

$C107 $R107

CN33

*C144

9p

C143

0.5pC142

*C141 0.5p

C140

9p

C139

*L120

*L121*L123

*L124

*L122

RX HPF

8p

C3084pC309

7pC310

4p

C339

1S

S390

D301

1S

S390

D302

LR

79G

0C

Q12N

G

12n

L304

LR

79G

0C

Q18N

G18n

L313

LR

79G

0C

Q18N

G18n

L303

$C

318 1

SS

400S

M

D304

1S

S400S

M

D303

$L315

*C337

$L317

0

R318

SB

2

AS

SW

50C

T

CN28

DD

RC

_D

[15]

DD

RM

_D

[14]

DD

RM

_D

[1]

DD

RM

_A

[12]

DD

RM

_W

E

DD

RM

_D

QS

[1]

DD

RM

_A

[2]

DD

RC

_B

A[1

]

DD

RC

_B

A[0

]

DD

RM

_B

A[1

]

DD

RM

_C

LK

P

DD

RM

_D

[3]

DD

RC

_D

QS

[1]

DD

RC

_D

QS

[0]

DD

RC

_D

QM

[1]

DD

RC

_D

QM

[0]

DD

RC

_C

S

DD

RC

_C

AS

DD

RC

_R

AS

DD

RC

_W

E

DD

RC

_C

KE

DD

RC

_C

LK

N

DD

RC

_C

LK

P

DD

RC

_A

[0]

DD

RC

_A

[1]

DD

RC

_A

[2]

DD

RC

_D

[4]

DD

RM

_A

[7]

DD

RC

_A

[12]

DD

RC

_A

[13]

DD

RM

_D

[15]

DD

RC

_A

[11]

DD

RC

_D

[10]

DD

RC

_A

[4]

DD

RM

_D

QM

[0]

DD

RM

_D

[13]

DD

RM

_D

[11]

DD

RM

_B

A[0

]

DD

RC

_D

[3]

DD

RM

_D

QM

[1]

DD

RM

_A

[6]

DD

RM

_R

AS

DD

RM

_A

[3]

DD

RC

_A

[6]

DD

RM

_A

[9]

DD

RC

_D

[2]

DD

RC

_D

[6]

DD

RM

_D

[5]

DD

RM

_A

[8]

DD

RM

_D

[0]

DD

RM

_C

LK

N

DD

RC

_A

[9]

DD

RC

_A

[8]

DD

RM

_A

[4]

DD

RM

_D

[12]

DD

RC

_A

[7]

DD

RC

_D

[14]

DD

RC

_D

[12]

DD

RM

_C

S

DD

RM

_C

AS

DD

RM

_C

KE

DD

RC

_A

[5]

DD

RC

_D

[1]

DD

RM

_D

[7]

DD

RC

_D

[13]

DD

RC

_D

[5]

DD

RC

_D

[9]

DD

RM

_A

[13]

DD

RM

_D

[10]

DD

RM

_A

[5]

DD

RM

_D

[4]

DD

RM

_A

[10]

DD

RM

_D

QS

[0]

DD

RM

_D

[6]

DD

RM

_D

[8]

DD

RC

_D

[11]

DD

RC

_A

[3]

DD

RC

_A

[10]

DD

RC

_D

[0]

DD

RM

_A

[1]

DD

RM

_A

[0]

DD

RM

_A

[11]

DD

RC

_D

[7]

DD

RC

_D

[8]

DD

RM

_D

[2]

DD

RM

_D

[9]

22

R491

22

R459

22

R452

22

R458

22

R466

22

R469

22

R472

22

R442

22

R475

22

R448

22

R450

22

R482

22

R457

22

R445

22

R480

22

R463

22

R454

22

R487

22

R447

22

R455

22

R481

22

R493

22

R474

22

R453

22

R490

22

R461

22

R451

22

R478

22

R443

22

R479

22

R456

22

R492

22

R460

22

R473

22

R476

22

R449

22

R484

22

R477

22

R464

22

R465

22

R471

22

R467

22

R446

22

R470

22

R468

CN

70

CN

69

100p

C305

100p

C3041000p

C331

VCTL1

6

PC

5

VCTL2

4P23

GND2

P11

NJG1608KB2IC301

Q301SSM3K15AMFV

22k

R307

47

R309

22k

R310

32M

TXD1

RXD1

/ADC

TX

RXD2

RX

SCK1

/EVCS

/PTT

32M

/DACCS

TXD2

32A

RXD0TXD0

SDI0

SDO0

10k

R498

10

R536

10

R537

/INT15P

/KEYINT

/ADC_INT

BER_DATA

BER_CLK

SP_MUTE

SDO1

/DM_EN

BT_AUD_DI

BT_AUD_DO

/DCR_CS

/CRST

I2CDT

PRST

/DSW

ANTSW

I2CCK

TXC

ATT_SW

TXPWR_H_/L

DCR_DI

DCR_DDO

/DCR_DCS

BCLK

RTS2

WCLK

CODEC_DI

/DCR_ACS

(TXSLOT) RTS1

DCR_ACLK

DCR_DO

CODEC_DO

SYMTIM_IN

/BINT

CTS1

DCR_ADI

330

R526

CN71

CN94

UART2_SW1

32M

D33_RXD2

UART2_SW2

D33_TXD2

P_TXD2

P_RXD2

SCK0

0.0

1u

C487

0.0

1u

C488

VCC

10

S9

D+8

D-7

oE6

GND

5

2D-

4

2D+

3

1D-

2

1D+

1

BD11600NUXIC405

VCC

10

S9

D+8

D-7

oE6

GND

5

2D-

4

2D+

3

1D-

2

1D+

1

BD11600NUXIC406

/VB

US

_D

ET

VER2

$R401

1k

R488

$R402

MODEL

VER1

32M

PRST_MON

R_S

ET

0

R_S

ET

1

R_S

ET

2

UA

RT

2_S

W2

UART2_SW1

/BT_SHUTDOWN

GPS_PA_EN

UMode

C510

EX

PA

D25

A2

24

A1

23

INT

22

VC

C

21

SD

A

20

SC

L

19

A018

P1717

P1616

P1515

P1414

P1313

P12

12

P11

11

P10

10

GN

D

9

P07

8

P06

7

P05 6

P04 5

P03 4

P02 3

P01 2

P00 1

TCA9555RTWRIC409

$R415

/IN

T_IO

I2C

DT

I2C

CK 0.1u

10k

R525

4.7

k

R517

4.7

kR

514

DM_IN

DM_OUT

/DM_EN

50A

32M

0.01uC498

0.0

1u

C491 VCC

5

oUTY

4 GND 3

INA

2

INB

1

TC7SZ08FEIC408

VCC 5

oUTY

4GND3

INA2

G1

TC7SET125FUF

IC407

1k

R503

33k

R511

47k

R505

/BT

_S

HU

TD

OW

NW

CLK

GP

S_P

A_E

N

54M

RT

S2

BT

_A

UD

_D

OB

T_A

UD

_D

IB

CLK

BT

_S

W

CT

S2

GP

S_A

LM

GP

S_P

WR

GP

SB

T_D

ET

GP

S_A

NT

_S

W

47

0R

489

0.0

1u

C412

1000p

C411

1000p

C410

1000p

C484

1k

R418

10*4

CP

405

10*4

CP

404

10*4

CP

403

5.4V

1u

C489

TO MODULE (BT/GPS) UNIT (XC2-004) CN1

20

19

18

17

16

15

14

13

12

11

10987654321

E40-6862-05CN2

R_S

ET

1

/VB

US

_D

ET

18M

_1

R_S

ET

0

R_S

ET

2

100p

C492

Q402SSM3K15AMFV

100k

R502

100k

R501

10k

R499

CN80

DA

TA

[6]

DA

TA

[7]

DA

TA

[5]

DA

TA

[4]

DA

TA

[3]

DA

TA

[2]

DA

TA

[1]

DA

TA

[0]

/OE

/WR

AD

D[2

3]

US

B0_D

M

MIC

ME

P_T

EM

P

/CS

4

PR

ST

_M

ON

PR

ST

/KE

YIN

T

I2C

CK

I2C

DT

RX

D0

TX

D0

/PS

W

/PT

T

RB

521C

M-3

0

D410

47*4

CP

413

47*4

CP

414

47*4

CP

412

CN78

CN76

CN77CN82

CN81

/CS

_LC

D/R

D_LC

D/W

R_LC

DD

C

/CS

_LC

D/R

D_LC

D/W

R_LC

DD

C1000pC514

L79-1

984-0

5L419

Q403

SS

M3K

15A

MF

V

$R

4090

R520

0R

516

0R

519

DA

TA

7D

AT

A6

DA

TA

5D

AT

A4

DA

TA

3D

AT

A2

DA

TA

1D

AT

A0

2

1

109

58

37

64L415

2

1

109

58

37

64L416

0R

407

$R

406

0R

408

0R

539

$R

540

$R

541

2

1

109

58

37

64

DA

TA

1D

AT

A2

DA

TA

5D

AT

A4

DA

TA

7

DA

TA

3

DA

TA

6

DA

TA

0

0.1uC521

1000p

C12

0.1

uC

511

0.1

uC

520

RB521CM-30D408

RB521CM-30

D409

EDZV8.2B

D407

3.3

k

R524

3.3

k

R523

3.3

k

R522

13.6V5.4V

1.8V

3.2V

US

B0_D

P

SP

O

/IG

N

18M

32M

54M

SB

1

31B

U

$C512

$C513

0.0

1u

C522

1000pC523

NC

3VIN2

VSS

4VOUT1

XC61CN5002N-GIC413

LT

C014T

EB

FS

8Q

404

100k

R527CN75

CN74

100p

C501

0.1

uC

519

LB

73H

0A

Y-0

02

L418

LB

73H

0A

Y-0

02

L417

SP

C10501A

01

D402

D403

100p

C509

100p

C506

100p

C505

100p

C503

100p

C507

D404

D405

SP

C10501A

01 D406

$R

414

$R

413

$R

411

$R

412

SB

SP

G

TO SUB UNIT (XC3-050) CN7

NC

(IG

N)

NC

GN

D

SP

G

SP

+

R_S

ET

0

NC

NC

R_S

ET

1

32M

SP

+

R_S

ET

2

US

B_D

-

SP

+

GN

D

GN

D

/PS

W

A[2

3]

NC

GN

D

/WR

GN

D

NC

D[0

]

GN

D

D[1

]

GN

D

D[2

]

GN

D

D[3

]

SB

D[4

]

SB

D[5

]

ME

D[6

]

SB

D[7

]

MIC

/VB

US

/RD

SP

G

LC

DR

ST

/PT

T

/CS

P_T

EM

P

/KE

YIN

T

I2C

CK

I2C

DT

GN

D

RX

D

TX

D

DM

/KV

L

NC

GN

D

US

B_D

+

18M

NC

54M

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

987654321

EC720AA-0560ACN1

(-71)

120n

L210

1.5p

C317

5pC311

6p

C319

$L316

LR

79G

0C

Q39N

G39n

L309

470

R315 12

R314

470

R313

15pC320

LR

79G

0C

QR

22G

220n

L311

LR

79G

0C

Q22N

G22n

L310

LR

79G

0C

Q39N

G

39n

L308

THP1

25VREF

VREF

50A

25REF

$C

404

$C

403

0.1u

C527 1u

C528

1u

C493

1u

C526

0.1

u

C495

0.1

u

C497

VDD

8

oUT2

7

IN2-

6

IN2+

5VSS4

IN1+3

IN1-2

oUT11

BU7462NUXIC414

+VA232

REFP31

REFM30 CH9 11

CH10 10

CH11 9

CH

12

8

CH

13

7

CH

14

6

CH

15

5

AIN

M

4

AIN

P

3

MX

o

2

AG

ND

1

1

0

R531

0R532

100

R496

100

R497

100

R495

100

R494

1k

R500

$R405

$R404

(D)

22k

R530

(D)

22k

R533

(D)

22k

R529

(D)22kR534

100*4CP409

/ADC_INT

P_T

EM

P

GP

S_A

LM

GP

S_P

WR

RE

VT

HP

2T

HP

1T

EM

P

CV

Ram

p_O

ffset

32M

/AD

C

BLV

L

50A

SD

I0S

DO

0S

CK

0

0.1u

C494

0.1u

C502

47p

C524

47p

C525

$C

402

GPIo29

+VBD28

BDGND27

SDo26

SDI25

SC

LK

24

CS

23

AG

ND

2

22

+V

A1

21

CH

0

20

CH

1

19

CH

2

18

CH

3

17

CH4 16

CH5 15

CH6 14

CH7 13

CH8 12ADS7961SRHB

IC410

LB73H0AV-002L414

0

R504

10kR50710kR508

22k

R513

22k

R512

$R

403

47k

R518

(D)100kR506

100kR535

100*4

CP

406

100*4CP408

100*4

CP

407

CN72

DAC

12bit/4ch

APC

AP

C1

32A

18M

_3

AS

SIS

T

SCK1/DACCSSDO1

FC

NT

$C

413

1u

C515

0.1

u

C516

$C

406

$C

407

SCLK

10

SYNC9

DIN8

VREFIN7

GND6

VoUTD

5

VoUTC

4

VoUTB 3

VoUTA

2

VA

1

DAC124S085CISIC411

$R

419

100*4

CP410

DAC E-Vol

8bit/8ch

CODEC

SP

C

SDO1SCK1/EVCS

32A

VREF

1uC655

161u

C517

4700p

C405

100pC518

$C

408

$C

409

VoU

T2

24

VoU

T1

23

VIN

122

VIN

821

VoU

T8

20

VoU

T7

19

VIN7 18

GND 17

RESET 16

VDAREF2 15

VDAREF1

14

VIN6

13

VoU

T6

12

VoU

T5

11

VIN

510

VIN

49

VoU

T4

8V

oU

T3

7

VIN36

DI5

CLK4

LD3

VDD2

VIN21

R2A20178NPIC412

$R521

0

R416

10k

R509

100*4CP411

CN50

CN79

AFO_SP

$R521

3.2V

19.2MHz

I2CDTI2CCK

MCLK

BCLK

CODEC_DICODEC_DOWCLK

0.1u

C638

LB73H0AV-003L602

10R660

10*4

CP604

100*4CP605

1.8V1uC639

0.1uC640

LB73H0AV-003

L601

1k

R662

100k

R661

DV

DD

32

RE

SE

T31

RIG

HT

_LoM

30

RIG

HT

_LoP

29

LE

FT

_LoM

28

LE

FT

_LoP

27

AV

SS

226

AV

DD

25

DRVDD2

24

HPRoUT

23

HPRCoM 22

DRVSS 21

HPLCoM 20

HPLoUT 19

DRVDD1 18

AVSS1 17

MIC

2R

/LIN

E2R

16

MIC

BIA

S

15

MIC

2L/L

INE

2L/M

ICD

ET

14

MIC

1R

M/L

INE

1R

M13

MIC

1R

P/L

INE

1R

P12

MIC

1LM

/LIN

E1LM

11

MIC

1LP

/LIN

E1LP

10

SD

A9

SCL8

IoVDD7

DVSS6

DoUT5

DIN4

WCLK3

BCLK2

MCLK1

TLV32AIC3104IIC607

CN87

0.1

uC

645

1u

C649

0.1

uC

642

0.1

uC

643

0.1

uC

641

0.1

uC

644

0.1

uC

650

DA

204U

D612

DA

204U

D613

0

R665

3.2V

32A

DI

MIC10uC636

10u

C646

1k

R664

1kR676

680

R673

100k

R677

0.0

22u

C65310u

C656

1k

R668

680

R669

50A

ME

0

R674

6.8

k

R675

AFOAMPAFAMPDSUBExSP

25REF

50A

0.1

uC

657

1u

C659

1u

C652

68p

C658

VDD

8

oUT2

7

IN2-

6

IN2+

5VSS4

IN1+3

IN1-2

oUT11

BU7462NUX

IC608

(D)27k

R672

47k

R671

1u

C661 100p

C651

100

R658

68k

R666

12k

R667

RXD1

50A

32M

CTS1

RXD1

SB2

100k

R618

10k

R615

CN90

CN91

TXD1

TXD1

RTS1

0.0

1u

C605

RB

521C

M-3

0

D615

VCC

8

G2

7

Y1

6

A2

5GND4

Y23

A12

G11

TC7WT126FU-F

IC602

100k

R622

CN89

0.01u

C606

RB521CM-30

D602

VCC

8

G2

7

Y1

6

A2 5

GND

4

Y2

3

A12

G11

TC7WH126FKIC603

CN97

CN95

157

8

16

0

R625

$R

604

$R

605

0

R623

CTS

RTS

RXD

TXD

501uC609

501u

C611

501uC610

501u

C612

0.0

1u

C608

RB521CM-30D614

VCC

16

GND

15

R2IN

8

T1oUT

14

R1IN

13

R1oUT

12

T1IN

11

T2IN

10

R2oUT9

T2oUT

7

V-

6

C2-

5

C2+

4

C1-

3

V+

2

C1+

1

ADM3202ARUZ

IC605

50A

D33_TXD2

D33_RXD2

BER_DATABER_CLK

BER_EN

0.0

1u

C635

RB521CM-30

D610

RB521CM-30

D609

ED

ZV

6.8

B

D611

VCC 5

oUTY

4GND3

INA2

G1

TC7SET125FUFIC606

1kR656

1kR657

10k

R617

10k

R616

CN88

2

1

4100p

C625

F53-0286-05

F6

TP

CP

8107-F

Q603

0

R627

$R602$R603

$R607

470

R626

$R606

AV

RM

10270K

101

D617

1000pC613

RB520SM-30D618

HORN ALERT SW 3

LTC014TEBFS8Q602

0

R628

4.7k

R629

47k

R632

AVRM10270K101D616

13.6V

FNC5

DATAI

DATO

SB

GND

HR

2

HR

1

100pC622

100p

C623

100pC624

100pC620

0.022uC621

F53-0286-05

F3

L603

100R624

470R640

14

13

12

11

10

9

0R631

$R

610

$R

609

0R633

$R

6080

R630

50

FNC6

FNC4

FNC3

FNC2

FNC1

SP2

IGN

6

100pC617

100pC616

100pC615

100pC618

1000pC660

100pC614

100pC619

100R638

100R639

100R637

0

R614

470R636

100R635

5

$R

611

0

R634

D-Sub15

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

E58-0567-05J1

ED

ZV

6.8

B

D608

ED

ZV

6.8

B

D607

ED

ZV

6.8

B

D606

ED

ZV

6.8

B

D605

ED

ZV

6.8

B

D604

ED

ZV

6.8

B

D603

5.0V50AC

19 18

17

2.2

u

C665

470p

C663

50

1uC664

10u

C637

ED

ZV

5.6

B

D601

CE3 VSS 2

VIN4 VoUT 1

XC6221D501G-GIC609

0R613

$R612

0

R641 330

R679

330

R670

330

R678

47k

R642

CN96

20

54M

IGN

SBC

DI

AFO

DEO_0

R659

$R601

32M

50A

/INT15P

I2CDT

I2CCK

DEO_0

0R

528

$R417

0.1

u

C607

SSM6N15AFEMQ601

10k

R619

4.7

k

R621

4.7

k

R620

330

R680

EXPAD

25

A224

A123

INT22

VCC21

SDA20

SCL19

A0

18

P17

17

P16

16

P15

15

P14

14

P13

13

P12 12

P11 11

P10 10

GND 9

P07 8

P06 7

P05

6

P04

5

P03

4

P02

3

P01

2

P00

1

TCA9555RTWRIC604

4.7k*4

CP601

4.7k*4

CP602

1u

C647

0.1

u

C648 0

R663

SPO

PA_MUTE

SP_MUTE

0.22u

C627

0.22u

C628

1u

C631

1u

C626

0.1

u

C633

0.1

u

C634

LTC014TEBFS8Q604

SSM6N15AFEM

Q605

2.2k

R648

2.2k

R649

22k

R654

22k

R655

6.8

k

R653

6.8

k

R647

22k

R652

22k

R646

32M

SB1

25

47u

C4

RB521CM-30

D619

Q606SSM3J334R

1.5k

R681

1k

R645

4.7

uC

632

oU

T1

12

NC

2

11

PW

RG

ND

10

NC

1

9

oU

T2

8

VC

C

7

PP

6

ST

BY

5

IN2

4

PR

EG

ND

3

IN1

2

RF

1

LA4631VC-XEIC601

13.6V

1000p

C629

16

330uC

2

16

330uC

3

F53-0286-05

F2

1k

R644

0

R650

0

R651

10k

R643

1000p

C630

0

EXT.SP

E1B-0001-00J2

/SA

VE

*C146

*C148

*C104

*C147

1000p

C145 *L102*L104

0

R145

*R108*R109

/CRST

0.01uC235

VCC8

oUT27

-IN26

+IN25 VEE 4

+IN1 3

-IN1 2

oUT1 1

BA3472FVMIC203

TX-RX UNIT (XC1-183K-00 (NX-3820H(G), NX-3820H, NX-3820(G), NX-3820))

A

1

B C D E F G

2

3

4

5

6

7

8

9

10

H I J K L M N O P Q(No.RA054<Rev.001>) 2-16

Page 185: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

B C D E F G

2

3

4

5

6

7

8

9

10

H I J K L M N O P Q(No.RA054<Rev.001>) 2-17

DC in

GND

+B

LPFANT

SW

DC

SW90C

ANTSW

Q22SSM3J334R

HPF

IC301NJG1608KB2

/DCR_RST,RX,TX,AGCKEEP,BCLK , /DCR_CS,DCR_DO,DCR_DI,DCR_ACLK,

Loop

Filter

VCOBUFF

200CIC101

ASSIST

ASTSW

NJM2904CRB1Q103 VT6M1

VCO_MOD

Q1062SC5108FT/Y/

50C

32C

Q105

D102

D103,104,105,106

SMV1270-079LF

MCH3914-H/8/

1SV282-F

D101 EDVZ8.2B

IC13BU31TD2WNVX

3.1V Reg

1.2V Reg

IC5XC6215B122N-G

31BU

12BU

5.4V DC/DC

Converter

54M

3.2V Reg

54M

3.2V Reg

1.2VDCDC

1.8VDCDC

F53-0286-05F1

MP2560DQ-LF-ZIC25

18M_3

IC21XC8102AA07-G

18M

32A

32M

12M

IC24LXDC2XQ12A-252

IC5XC6223D331P-G

IC12LXDC2HN18F163

IC17NJM2878F4-32

ADS7961SRHBIC410

ADCCV,P_TEMP,Ramp_Offset,BLVL,TEMP

IC411

DAC

DAC124S085CIS

APC,ASSIST,FCNT

IC412

DAC

R2A20178NP

SPC,SPAF

SCK0,SDO0.SDI0

/EVCS

/DACCS

/ADC,/ADC_INT

L79-1984-05L415,L416,L419

/CS4,/OE,/WR,ADD[23]

DATA[0]~DATA[7]

CN1

IC404

IC402

IC401

DDR_A[0]~DDR_A[13]

DDR_BA[0],DDR_BA[1]

DDR_CAS,DDR_CKE,DDR_CLKN

DDR_CLKP,DDR_CS

DDR_DQM[0],DDR_DQM[1]

DDR_RAS,DDR_WE

DDR_DQS[0],DDR_DQS[1]

DDR_D[0]~DDR_D[15]

DATA[0]~DATA[15]

/FRST,/OE,/WP,/WR

ADD[0]~ADD[23]

IC403TC7SZ08FE

/CS2

/CS3

/CS_F

PLL_CLK

Q4012SC4617/S/

L7H-0076-00X401

D205 L8104D206 L8104

54M

/CS,/RD,/WR,A[23],D[0]~D[7]

---------------------------------------------------------

--TX--

ANTSW,/DSW,TXC,ASSW,TXPWR_H_/L

---------------------------------------------------------

--RX--

ATT_SW

---------------------------------------------------------

--AUDIO--

SP_MUTE,PA_MUTE

---------------------------------------------------------

--3.2V Reg(IC19),5V Reg(IC609),DC SW(Q13,Q12)--

SBC

---------------------------------------------------------

--Logic IC(IC407,IC408)--

DM_OUT,/DM_EN,DM_IN

---------------------------------------------------------

136~174MHz

LTC014EEBFS8Q21

CTRL

PA

DET

REV

RB706F-40D204

AD8315ARMIC205

50CT

SPC

DC BA3472FVMIC203

90T

AMP AMP

DC

1/22/2

90T

Q204

DC SW

LSCR523EBFS8

REV

COUPLER

DC SW

Q202LSCR523EBFS8

/DSW

IC201RA60H1317A501

Gate Bias

RF POWER MODULE

+B

AMP

DRIVE

Q201RFM01U7PF

90T

BGU6104

AMP

DRIVE

IC202

50CT

DC SW ASSW

VT6M1Q206

Ramp_

Offset

2/2

DC SW

BPF

50C

Q1041SS400SMD107

Filter

Ripple

2SD2645/W/

Protect

D208/D209

(13.6V(K), 13.2V(E))

5V50BU

Q16LSAR523UBFS8

Q15LSCR523EBFS8

EDZV5.6BD13

Q1KTA2012EP

SSM3K15AMFVQ3

DC SW54M

VT6M1Q19

DC SW

5.0V Reg50A

IC26XC6221D501G-G

5.0V Reg

IC6XC6221D501G-G

50C

SBC

SBC

3.2V Reg

XC6223D321G-GIC19

FZA10BS-5R0F4

BAT_CNT

Q13LTC014EEBFS8

DC SW

TPCP8107-FQ12

SBC

TPCP8107-FQ17

LTC014EEBFS8Q18

FZA10BS-5R0F5

DC SW

SBC

20VDC/DC

IC13TPS61041DRVR

Converter

EM6M2Q12

DC SW

/SAVE

50CS

200C

SB1

SB2

9.0V Reg

IC1BA00DD0WHFP

5.0V Reg

IC16XC6209B502P-G

50CT

90C

18M

32M

18M_3

FCNT

32M

To

SU

B U

NIT

32M

18M

DM/KVL

R_SET0,R_SET1,R_SET2,PRST_MON

THP1,THP2,REV,GPS_PWR,GPS_ALM

CODEC_DI,CODEC_DO

I2CCK,I2CDT,/CRST

BCLK,WCLK,MCLK

IC607

CODEC

TLV32AIC3104I

18M_3 32A

MI2ME

MIC/VBUS

DETO

DATAI

50A

1/2

IC608BU7242UNX

BU7242UNX2/2

AFO

IC608

AFO_SP

AFO_D

50A

LA4631VC-XE

SB2

IC601

TC7SZ08FEIC408

DM_OUT

/DM_EN

DM_IN

TC7SET125FUFIC407

EX

T S

P

J2

TCA9555RTWRIC604

I/O

EXPANDER

I2CCK

I2CDTLEVELCONVERSION

SSM6N15AFEMQ601

50A

RS-232C

Driver

ADM3202ARUZIC909

50A

RXD(RS232C)

TXD(RS232C)

CTS(RS232C)

RTS(RS232C)

TXD1

RXD1

CTS1

RTS1

SB2

50AC

D33_RXD2

IC606

D33_TXD2

50A

J1

E-Vol

IC406

DPDT

SW

32M

BD11600NUX

UART2_SW2

P_TXD2

P_RXD2

DPDT

SW

UART2_SW132M

BD11600NUXIC405

G_TXD2

G_RXD2

TXD2

RXD2

32MIC409

I/O

EXPANDER

TCA9555RTWR

TCXO Buffer

I2CCK

I2CDT

UART2_SW1

UART2_SW2

GPS_PA_EN

/BT_SHUTDOWNUMode

/INT_IO

/IGN

Q18XC61CN5002N-G

HORN

GPS_ANT_SW,WCLK,BCLK,BT_AUD_DI,BT_AUD_DO

RTS2,CTS2,BT_SW,GPSBT_DET

G_RXD2

G_TXD2

GPS_PWR

GPS_ALM

GPS_PA_EN

/BT_SHUTDOWN

54M

CN2

Power

Managment

MSP430G2533P0IC22

31BU

/OVRB_OUT,/IGN_OUT,/PSW_OUT

PWR_CNT,/BINT2,/RST,/BINT

D20EDZV18B

Q11LTC014EEBFS8

DC SW/OVRB

/OVRB

P_TXD2

P_RXD2

BAT_CNT

/IGN

/PSW

Bluetooth

2400-2483.5 MHz

L11L79-1987-05

BPF

L9L79-1985-05

BPF

GPS_PWR

GPS_ALM

32.768kHz

L77-3123-05X1

X2

19.2MHz

TXCO

DC

SW33BT

EM6M2Q1

NL5500LYFVRIC5

BLUETOOTH

33BT

GPS

1575.42MHz

18BT

GPS

18BT

33GPS

L77-3121-05

XO

18BT_HCI_TX,18BT_HCI_RX

BTFM_nSHUTDoWN,GPS_PA_EN

18BT_AUD_OUT,18BT_AUD_IN

18BT_AUD_FSYNC,18BT_AUD_CLK

18BT_HCI_CTS,18BT_HCI_RTS

74AVC4TD245GUIC1,6,7

CONVERSION

LEVEL

33BT

18BT

BU18TD2WNVX

XC6209B332D-G

IC4

BT_SW

18BT

33GPS

54M

33BT

GPS_ANT_SW

1.8V AVR

3.3V AVR

NJM2878F4-33

IC2

IC3

3.3V AVR

GPS_PWR,GPS_ALM

54M

BT_SW,GPS_ANT_SW

WCLK,BCLK

CN1

RTS2,CTS2

BT_AUD_DI,BT_AUD_DO

/BT_SHUTDOWN,GPS_PA_EN

RXD2,TXD2

DDR

FLASH

SW

Q605SSM6N15AFEM

SP_MUTE

19.2MHz

ANT

DET

SSM3J334RQ20

LTC014EEBFS8

TXC

Q23

90CDC

SW90T

TC7SET125FUF

RN142S

XC1-182

TX-RX UNIT32C

D207 L8104

ATT

D303/D3041SS400SM

TRANCEIVER IC

AK2401IC302

Q1072SC5108FT/Y/

D108SMV1130-079LF

CP

CPZ

200C

CV

IC101NJM2904CRB1

1/2

ATT

LNAoUT

VCO_MOD

PLL_CLK

ATT_SW

SSM3K15AMFVQ301

PLD,DCR_ADI,/DCR_ACS,/DCR_DCS,DCR_DDO

32M

USB_D+,USB_D-,/PTT,TXD.RXD,I2CDT,I2CCK,/KEYINT,PRST

SB1

/VBUS_DET

SSM3K15AMFVQ402

MIC

/PSW

P_TEMP

BER_EN

SW

HR1

HR2

Q602LTC014TEBFS8

Q603TPCP8107-F

F53-0286-05F6

D33_RXD2

D33_TXD2

FNC1(TXD),FNC2(RXD),FNC3(RTS)

FNC4(CTS),FNC5,FNC6

IGN

SP2

DETO(AFO)

DATAI(MI2)

5.0V Reg

IC609XC6221D501G-G

50AC

SBC

TXD

RXD

CTS

RTS

AFO_SP

SPAF

SW

Q605SSM6N15AFEM

PA_MUTE

SPO

F53-0286-05F2

SCK1,SDO1

SCK1,SDO1

TEMP

THP1

TEMP

THP2

/INT15P

SW

TXPWR_H_/L

Q205EMD9

RN142SD202

D-su

b

BUFF

TX-RX Unit (XC1-182)

Module (BT/GPS) Unit (XC2-004): NX-3720H(G), NX-3720(G) only

BLOCK DIAGRAM TX-RX UNIT (NX-3720H(G), NX-3720H, NX-3720(G), NX-3720)

Page 186: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

B C D E F G

2

3

4

5

6

7

8

9

10

H I J K L M N O P Q(No.RA054<Rev.001>) 2-18

TX-RX Unit (XC1-183)

DC in

GND

+B

K :450~520MHz

LPFANT

SW

DCSW 90C

ANTSW

Q22SSM3J334R

HPF

IC301NJG1608KB2

/DCR_RST,RX,TX,AGCKEEP,BCLK ,/DCR_CS,DCR_DO,DCR_DI,DCR_ACLK,

Loop

Filter

VCO BUFF

200CIC101

ASSIST

ASTSW

NJM2904CRB1Q103 VT6M1

VCO_MOD

Q1062SC5108FT/Y/

50C

32C

Q105

D102

D103,104,105,106

SMV1270-079LF

MCH3914-H/8/

1SV282-F

D101 EDVZ8.2B

IC13BU31TD2WNVX

3.1V Reg

1.2V Reg

IC5XC6215B122N-G

31BU

12BU

5.4V DC/DC

Converter54M

3.2V Reg

54M

3.2V Reg

1.2VDCDC

1.8VDCDC

F53-0286-05F1

MP2560DQ-LF-ZIC25

18M_3

IC21XC8102AA07-G

18M

32A

32M

12M

IC24LXDC2XQ12A-252

IC5XC6223D331P-G

IC12LXDC2HN18F163

IC17NJM2878F4-32

ADS7961SRHBIC410

ADC CV,P_TEMP,Ramp_Offset,BLVL,TEMP

IC411

DAC

DAC124S085CIS

APC,ASSIST,FCNT

IC412

DAC

R2A20178NP

SPC,SPAF

SCK0,SDO0.SDI0

/EVCS

/DACCS

/ADC,/ADC_INT

L79-1984-05L415,L416,L419

/CS4,/OE,/WR,ADD[23]DATA[0]~DATA[7]

CN1

IC404

IC402

IC401

DDR_A[0]~DDR_A[13]

DDR_BA[0],DDR_BA[1]DDR_CAS,DDR_CKE,DDR_CLKNDDR_CLKP,DDR_CSDDR_DQM[0],DDR_DQM[1]DDR_RAS,DDR_WEDDR_DQS[0],DDR_DQS[1]DDR_D[0]~DDR_D[15]

DATA[0]~DATA[15]

/FRST,/OE,/WP,/WRADD[0]~ADD[23]

IC403TC7SZ08FE

/CS2

/CS3

/CS_F

PLL_CLK

Q4012SC4617/S/

L7H-0076-00X401

D205 L8104D206 L8104

54M

/CS,/RD,/WR,A[23],D[0]~D[7]

-----------------------------------------------------------TX--ANTSW,/DSW,TXC,ASSW,TXPWR_H_/L-----------------------------------------------------------RX--ATT_SW-----------------------------------------------------------AUDIO--SP_MUTE,PA_MUTE-----------------------------------------------------------3.2V Reg(IC19),5V Reg(IC609),DC SW(Q13,Q12)--SBC-----------------------------------------------------------Logic IC(IC407,IC408)--DM_OUT,/DM_EN,DM_IN---------------------------------------------------------

K2,E:400~470MHz

LTC014EEBFS8Q21

CTRL

PA

DET

REV

RB706F-40D204

AD8315ARMIC205

50CT

SPC

DC BA3472FVMIC203

90T

AMP AMP

DC1/22/2

90T

Q204

DC SW

LSCR523EBFS8

REV

COUPLER

DC SW

Q202LSCR523EBFS8

/DSW

IC201

F1:RA60H4452-501F2:RA60H3847-501

Gate Bias

RF POWER MODULE

+B

AMP

DRIVE

Q201RFM01U7PF

90T

BGU6104

AMP

DRIVE

IC202

50CT

DC SW ASSW

VT6M1Q206

Ramp_

Offset

50C

2/2

DC SW

BPF

50C

Q1041SS400SMD107

Filter

Ripple

2SD2645/W/

Protect

D208/D209

(13.6V(K,K2), 13.2V(E))

5V50BU

Q16LSAR523UBFS8

Q15LSCR523EBFS8

EDZV5.6BD13

Q1KTA2012EP

SSM3K15AMFVQ3

DC SW54M

VT6M1Q19

DC SW

5.0V Reg50A

IC26XC6221D501G-G

5.0V Reg

IC6XC6221D501G-G

50C

SBC

SBC

3.2V Reg

XC6223D321G-GIC19

FZA10BS-5R0F4

BAT_CNT

Q13LTC014EEBFS8

DC SW

TPCP8107-FQ12

SBC

TPCP8107-FQ17

LTC014EEBFS8Q18

FZA10BS-5R0F5

DC SW

SBC

20VDC/DC

IC13TPS61041DRVR

Converter

EM6M2Q12

DC SW

/SAVE

50CS

200C

SB1

SB2

9.0V Reg

IC1BA00DD0WHFP

5.0V Reg

IC16XC6209B502P-G

50CT

90C

18M

32M

18M_3

FCNT

32M

To

SU

B U

NIT

32M

18M

DM/KVL

R_SET0,R_SET1,R_SET2,PRST_MON

THP1,THP2,REV,GPS_PWR,GPS_ALM

CODEC_DI,CODEC_DOI2CCK,I2CDT,/CRSTBCLK,WCLK,MCLK

IC607

CODEC

TLV32AIC3104I

18M_3 32A

MI2ME

MIC/VBUS

DETO

DATAI

50A

1/2

IC608BU7242UNX

BU7242UNX2/2

AFO

IC608

AFO_SP

AFO_D

50A

LA4631VC-XE

SB2

IC601

TC7SZ08FEIC408

DM_OUT

/DM_EN

DM_IN

TC7SET125FUFIC407

EX

T S

P

J2

TCA9555RTWRIC604

I/OEXPANDER

I2CCKI2CDT

SSM6N15AFEMQ601

50A

RS-232CDriver

ADM3202ARUZIC909

50A

RXD(RS232C)

TXD(RS232C)

CTS(RS232C)

RTS(RS232C)

TXD1

RXD1

CTS1

RTS1

SB2

50AC

D33_RXD2

IC606

D33_TXD2

50A

J1

E-Vol

IC406

DPDTSW

32M

BD11600NUX

UART2_SW2

P_TXD2

P_RXD2

DPDTSW

UART2_SW132M

BD11600NUXIC405

G_TXD2

G_RXD2

TXD2

RXD2

32MIC409

I/OEXPANDER

TCA9555RTWR

TCXO Buffer

I2CCKI2CDT

UART2_SW1

UART2_SW2

GPS_PA_EN

/BT_SHUTDOWN UMode

/INT_IO

/IGN

Q18XC61CN5002N-G

HORN

GPS_ANT_SW,WCLK,BCLK,BT_AUD_DI,BT_AUD_DORTS2,CTS2,BT_SW,GPSBT_DET

G_RXD2

G_TXD2

GPS_PWR

GPS_ALM

GPS_PA_EN

/BT_SHUTDOWN

54M

CN2

PowerManagment

MSP430G2533P0IC22

31BU

/OVRB_OUT,/IGN_OUT,/PSW_OUTPWR_CNT,/BINT2,/RST,/BINT

D20EDZV18B

Q11LTC014EEBFS8

DC SW/OVRB

/OVRB

P_TXD2

P_RXD2

BAT_CNT

/IGN

/PSW

Bluetooth2400-2483.5 MHz

L11L79-1987-05

BPF

L9L79-1985-05

BPF

GPS_PWRGPS_ALM

32.768kHz

L77-3123-05X1

X2

19.2MHz

TXCO

DCSW

33BT

EM6M2Q1

NL5500LYFVRIC5

BLUETOOTH

33BT

GPS1575.42MHz

18BT

GPS

18BT

33GPS

L77-3121-05

XO

18BT_HCI_TX,18BT_HCI_RX

BTFM_nSHUTDoWN,GPS_PA_EN

18BT_AUD_OUT,18BT_AUD_IN18BT_AUD_FSYNC,18BT_AUD_CLK

18BT_HCI_CTS,18BT_HCI_RTS

74AVC4TD245GUIC1,6,7

33BT

18BT

BU18TD2WNVX

XC6209B332D-G

IC4

BT_SW

18BT

33GPS

54M

33BT

GPS_ANT_SW

1.8V AVR

3.3V AVR

NJM2878F4-33

IC2

IC3

3.3V AVR

GPS_PWR,GPS_ALM

54M

BT_SW,GPS_ANT_SW

WCLK,BCLK

CN1

RTS2,CTS2

BT_AUD_DI,BT_AUD_DO

/BT_SHUTDOWN,GPS_PA_EN

RXD2,TXD2

DDR

FLASH

SW

Q605SSM6N15AFEM

SP_MUTE

19.2MHz

ANTDET

SSM3J334RQ20

LTC014EEBFS8

TXC

Q23

90CDCSW90T

TC7SET125FUF

RN142S

XC1-183

TX-RX UNIT32C

D207 L8104

ATT

D303/D3041SS400SM

TRANCEIVER IC

AK2401IC302

Q1022SC5108FT/Y/

Q1012SC5108FT/Y/

50C

TRIPLER

D108SMV1130-079LF

CP

CPZ

200C

CV

IC101NJM2904CRB1

1/2

ATT

LNAoUT

VCO_MOD

PLL_CLK

ATT_SW

SSM3K15AMFVQ301

PLD,DCR_ADI,/DCR_ACS,/DCR_DCS,DCR_DDO

32M

USB_D+,USB_D-,/PTT,TXD.RXD,I2CDT,I2CCK,/KEYINT,PRST

SB1

/VBUS_DET

SSM3K15AMFVQ402

MIC

/PSW

P_TEMP

BER_EN

SW

HR1

HR2

Q602LTC014TEBFS8

Q603TPCP8107-F

F53-0286-05F6

D33_RXD2

D33_TXD2

FNC1(TXD),FNC2(RXD),FNC3(RTS)

FNC4(CTS),FNC5,FNC6

IGN

SP2

DETO(AFO)

DATAI(MI2)

5.0V Reg

IC609XC6221D501G-G

50AC

SBC

TXD

RXD

CTS

RTS

AFO_SP

SPAF

SW

Q605

SSM6N15AFEM

PA_MUTE

SPO

F53-0286-05F2

SCK1,SDO1

SCK1,SDO1

TEMP

THP1

TEMP

THP2

/INT15P

SW

TXPWR_H_/L

Q205EMD9

RN142SD202

D-su

b

LEVELCONVERSION

CONVERSION

LEVEL

Module (BT/GPS) Unit (XC2-004): NX-3820H(G), NX-3820(G) only

TX-RX UNIT (NX-3820H(G), NX-3820H, NX-3820(G), NX-3820)

Page 187: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

A

1

B C D E F G

2

3

4

5

6

7

8

9

10

H I J K L M N O P Q(No.RA054<Rev.001>) 2-19

D

LCD_GND

ESD_GND ESD_GND ESD_GND ESD_GND

ESD_GND

GND

GND

GND

ESD_GND

ESD_GND

GND

ESD_GND

CN7To T

X-R

X U

NIT

MO

DU

LA

R J

AC

K

J1

USB_D+

BLC_3

IC5

DPDTSW

50M

BD11600NUX

BUSSWC

USB_D-HOOK/RXD/D-

BLC/D+

IC3

BUSBUFFER

32M

TC7WH126FK

RXDRXD_50V

/PTT

/TXDEN

TXD

BLCSW

BLC

IC4TC7WT125FUF

5.0V Reg

IC609XC6221D501G-G

54M 50M

PTT_TXD

MIC_VBUS,ME,DM_KVL

SB

SB

1/2

IC4TC7WT125FUF

2/2

USB_D+

USB_D-

To L

CD

AS

SY

CN6

TXD

RXD

DAT[1]~DAT[7],/CS,/RD,/WR,A[23]

32M

54M

32M

18M

18M

SW/LCDRSTRSTB

To

FLE

X P

.BO

AR

D

CN3

IO

EXPANDER

/LCDRST

I2CCK,I2CDT,/KEYINT

/PSW

S1~S10

KEYILLUMINATIONLCD

BACKLIGHT

D3-D6,D11,D12,D17,D18,D33,D34B30-2365-05D9,D10,D15,D16

NSSW206C-T865

RGB LED

D20B30-2364-05

DCSWSSM6N37FE

Q2KEYBLC

SSM6N37FEQ8

LCDBLC1DCSW

DCSW LCDBLC2

54M54M

LED_R

LTC014EEBFS8

Q6

DCSW

LED_GDCSW

DCSWLED_B

54M

Q4

Q3

P_TEMP

/PSW

LCDBLC1

LED_B

LED_G

LED_R

KEYBLC

LCDBLC2

BLC

BLCSW

BUSSW

/TXDEN

32M

CN5

To SPEAKER

SP+

SPG

R_SET0

R_SET2

IC6TC35894FG

Q1SSM3K15AMFV

/PTT

Sub (Display) Unit (XC3-050)

SUB UNIT

Page 188: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

MEMO

(No.RA054<Rev.001>) 2-20

Page 189: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

PARTS LIST

[NX-3720H(G), NX-3720H, NX-3720(G), NX-3720,

NX-3820H(G), NX-3820H, NX-3820(G), NX-3820]

* SAFETY PRECAUTION

Parts identified by the � symbol are critical for safety. Replace only with

specified part numbers.

* BEWARE OF BOGUS PARTS

Parts that do not meet specifications may cause trouble in regard to safety and

performance. We recommend that genuine parts be used.

* (x_) in a description column shows the number of the used part.

- Contents -

Exploded view of general assembly and parts list

Electrical parts list

Packing materials and accessories parts list

3-2

3-4

3-21

(No.RA054<Rev.001>)3-1

Page 190: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

Exploded view of general assembly and parts listBlock No.M1MM

12

29

1

34

5

6

9

8

10

11

13

14

15

16

17

19

20

2122

2324

25

26

27

28

30

31 32

33

34

35

36

37

38

16

41

42

43

7

A

A

A

A

B

B

B

BB

B

B

B

B

44

C

C

SUB UNIT<03>

TX-RX UNIT<01><02>

(GPS type)

(W/O

GPS type)

(K,K2 type)

(E type)

B

MODULE UNIT<04>

3-2(No.RA054<Rev.001>)

Page 191: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

General assemblyBlock No. [M][1][M][M]

Symbol No. Part No. Part Name Description Local

1 A0C-0166-00 PLASTIC CABINET 3 A6C-0067-10 PANEL ASSY 4 B4D-0044-00 KENWOOD BADGE PANEL 5 B09-0732-03 CAP DSUB 6 B1B-0101-00 ILL.GUIDE LCD 7 B1B-0102-00 OPTI.DIFFUSER UPPER ILL-GUIDE 8 B1B-0103-00 REF.SHEET LOWER ILL-GUIDE 9 B3H-0058-00 LCD ASSY 304X100 DOT 10 E04-0454-15 C.RECEPTACLE-BN ANT BNC 3720E,3720GE,3820E,3820GE 10 E04-0167-15 C.RECEPTACLE-M ANT M 3720HGK,3720HK,3820HGK,3820HGK2,3820HK,3820HK2 11 E30-7684-35 DC CORD RADIO 12 E3A-0390-00 CORD W.CON. SP 13 E3G-0042-00 FFC WIRE 60P 14 F10-3112-13 SHIELDING CASE PM 15 F1A-0027-00 SHIELDING PLATE TOP 16 F1B-0086-00 SHIELDING COVER BLS(DCDC,VCO)(x2) 17 F1E-0040-00 SHADE TX-BUSY 19 G11-4578-04 SHEET W/O GPS 3720E,3720HK,3820E,3820HK,3820HK2 20 G11-4611-04 SHEET DSUB 21 G13-1837-04 CUSHION TOP SHIELD 22 G13-2101-14 CONDUCT CUSHION PM 23 G1D-0191-00 CUSHION LCD 24 G53-1643-04 PACKING DC CORD 25 G53-1675-04 PACKING ANT BNC 3720E,3720GE,3820E,3820GE 25 G53-1662-04 PACKING ANT M 3720HGK,3720HK,3820HGK,3820HGK2,3820HK,3820HK2 26 G53-1820-03 PACKING FRONT 27 G5D-0117-00 PACKING TOP 28 G5D-0127-00 PACKING SP 29 J1K-0456-00 HOLDER DISP PCB 30 J2B-0341-00 MOUNTING LCD 31 K2K-0242-00 KEY TOP 32 T07-0757-35 SPEAKER 6OHM/5.5W/7W 33 W09-0971-05 LITHIUM CELL 34 B09-0754-05 CAP SMA 3720GE,3720HGK,3820GE,3820HGK,3820HGK2 35 E0E-0003-00 C.RECEPTACLE-SM SMA 3720GE,3720HGK,3820GE,3820HGK,3820HGK2 36 E3F-0017-10 FLAT CABLE 20P BT/GPS 3720GE,3720HGK,3820GE,3820HGK,3820HGK2 37 F10-3225-05 SHIELDING COVER BLS(BT/GPS) 3720GE,3720HGK,3820GE,3820HGK,3820HGK2 38 G53-1768-04 PACKING SMA 3720GE,3720HGK,3820GE,3820HGK,3820HGK2 41 J8C-0018-00 FLEX P.BOARD KEY 42 B41-1837-04 CAUTION STICKER HOT SURFACE 43 B4B-0008-00 CAUTION STICKER FCC(PANEL) 3720HGK,3720HK,3820HGK,3820HGK2,3820HK,3820HK2 44 G0B-0104-00 EARTH SPRING PANEL HOLDER A N67-3010-48 P.H.SEMS SCREW PM,AMP,DC(GND)(x5) B N87-2608-48 BR.HEAD T.SCREW PCB,ANT,SMA(x17) 3720E,3720HK,3820E,3820HK,3820HK2 B N87-2608-48 BR.HEAD T.SCREW PCB,ANT,SMA(x19) 3720GE,3720HGK,3820GE,3820HGK,3820HGK2 C N83-2005-48 P.HEAD T.SCREW BT/GPS(x3) 3720GE,3720HGK,3820GE,3820HGK,3820HGK2- XC3-050M-00 SUB UNIT DISPLAY- XC2-0040-10 MODULE UNIT BT/GPS 3720GE,3720HGK,3820GE,3820HGK,3820HGK2- XCA-033K-00 TX-RX UNIT SERVICE UNIT 3720HGK,3720HK- XCA-033E-01 TX-RX UNIT SERVICE UNIT 3720E,3720GE- XCA-034E-01 TX-RX UNIT SERVICE UNIT 3820E,3820GE- XCA-034K-00 TX-RX UNIT SERVICE UNIT 3820HGK,3820HK- XCA-034K-01 TX-RX UNIT SERVICE UNIT 3820HGK2,3820HK2

(No.RA054<Rev.001>)3-3

Page 192: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

Electrical parts listTX-RX UNIT

XC1-182K-00 (NX-3720E,NX-3720GE,NX-3720HGK,NX-3720HK)*Note : This part cannot be replaced.Therefore, this part is not supplied as a service part.

Block No. [0][1]

Symbol No. Part No. Part Name Description Local

IC1 BA00DD0WHFP ICIC12 LXDC2HN18F163 ICIC13 BU31TD2WNVX ICIC14 TPS61041DRVR ICIC15 XC6215B122N-G ICIC16 XC6209B502P-G ICIC17 NJM2878F4-32 ICIC18 XC61CN5002N-G ICIC19 XC6223D321G-G ICIC20 XC6223D321P-G ICIC21 XC8102AA07-G ICIC22 MSP430G2533P0 ICIC23 XC6221D501G-G ICIC24 LXDC2XQ12A-252 ICIC25 MP2560DQ-LF-Z ICIC26 XC6221D501G-G ICIC101 NJM2904CRB1 ICIC202 BGU6104 ICIC203 BA3472FVM ICIC205 AD8315ARM ICIC301 NJG1608KB2 ICIC302 AK2401 ICIC401 ------------ IC *NoteIC402 ------------ IC *NoteIC403 TC7SZ08FE ICIC404 ------------ IC *NoteIC405 BD11600NUX ICIC406 BD11600NUX ICIC407 TC7SET125FUF ICIC408 TC7SZ08FE ICIC409 TCA9555RTWR ICIC410 ADS7961SRHB ICIC411 DAC124S085CIS ICIC412 R2A20178NP ICIC413 XC61CN5002N-G ICIC414 BU7462NUX ICIC602 TC7WT126FU-F ICIC603 TC7WH126FK ICIC604 TCA9555RTWR ICIC605 ADM3202ARUZ ICIC606 TC7SET125FUF ICIC607 TLV32AIC3104I ICIC608 BU7462NUX ICIC609 XC6221D501G-G IC

Q11 LTC014EEBFS8 DIGI TRANSISTORQ12 TPCP8107-F FETQ13 LTC014EEBFS8 DIGI TRANSISTORQ14 LTC014TEBFS8 DIGI TRANSISTORQ15 LSCR523EBFS8 TRANSISTORQ16 LSAR523UBFS8 TRANSISTORQ17 TPCP8107-F FETQ18 LTC014EEBFS8 DIGI TRANSISTORQ19 VT6M1 FETQ20 SSM3J334R FETQ21 LTC014EEBFS8 DIGI TRANSISTORQ22 SSM3J334R FETQ23 LTC014EEBFS8 DIGI TRANSISTORQ25 EMD9 DIGI TRANSISTORQ103 EM6M2 FETQ104 2SD2654/W/ TRANSISTORQ105 MCH3914-H/8/ FETQ106 2SC5108FT/Y/ TRANSISTORQ107 2SC5108FT/Y/ TRANSISTORQ201 RFM01U7PF FETQ202 LSCR523EBFS8 TRANSISTOR

Q204 LSCR523EBFS8 TRANSISTORQ205 EMD9 DIGI TRANSISTORQ206 VT6M1 FETQ301 SSM3K15AMFV FETQ401 2SC4617/S/ TRANSISTORQ402 SSM3K15AMFV FETQ403 SSM3K15AMFV FETQ404 LTC014TEBFS8 DIGI TRANSISTORQ601 SSM6N15AFEM DUAL FETQ602 LTC014TEBFS8 DIGI TRANSISTORQ603 TPCP8107-F FETQ604 LTC014TEBFS8 DIGI TRANSISTORQ605 SSM6N15AFEM DUAL FETQ606 SSM3J334R FET

D1 ST70-27F-572 ZENER DIODED13 EDZV5.6B ZENER DIODED14 RB521CM-30 DIODED15 1SS400SM DIODED16 RB060M-40 DIODED17 RB561VM-40 SCHOTTKY DIODED18 RB521CM-30 DIODED19 RB521CM-30 DIODED20 EDZV18B ZENER DIODED21 RB520SM-30 DIODED22 EDZV8.2B ZENER DIODED24 RB520SM-30 DIODED26 RB521CM-30 DIODED27 RB521CM-30 DIODED101 EDZV8.2B ZENER DIODED102 SMV1270-079LF VARI CAP DIODED103 1SV282-F VARI CAP DIODED104 1SV282-F VARI CAP DIODED105 1SV282-F VARI CAP DIODED106 1SV282-F VARI CAP DIODED107 1SS400SM DIODED108 SMV1130-079LF VARI CAP DIODED201 EDZV5.6B ZENER DIODED202 RN142S DIODED204 RB706F-40 DIODED205 L8104 DIODED206 L8104 DIODED207 L8104 DIODED208 RN142S DIODED209 RN142S DIODED301 1SS390 DIODED302 1SS390 DIODED303 1SS400SM DIODED304 1SS400SM DIODED401 RB521CM-30 DIODED402 SPC10501A01 VARISTORD403 SPC10501A01 VARISTORD404 SPC10501A01 VARISTORD405 SPC10501A01 VARISTORD406 SPC10501A01 VARISTORD407 EDZV8.2B ZENER DIODED408 RB521CM-30 DIODED409 RB521CM-30 DIODED410 RB521CM-30 DIODED601 EDZV5.6B ZENER DIODED602 RB521CM-30 DIODED603 EDZV6.8B ZENER DIODED604 EDZV6.8B ZENER DIODED605 EDZV6.8B ZENER DIODED606 EDZV6.8B ZENER DIODED607 EDZV6.8B ZENER DIODED608 EDZV6.8B ZENER DIODED609 RB521CM-30 DIODED610 RB521CM-30 DIODED611 EDZV6.8B ZENER DIODED612 DA204U MULTIPLE DIODED613 DA204U MULTIPLE DIODED614 RB521CM-30 DIODED615 RB521CM-30 DIODED616 AVRM10270K101 VARISTORD617 AVRM10270K101 VARISTOR

Symbol No. Part No. Part Name Description Local

3-4(No.RA054<Rev.001>)

Page 193: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

D618 RB520SM-30 DIODED619 RB521CM-30 DIODE

C1 C92-0968-05 E CAPACITOR 470uF 25VC2 C92-0906-05 E CAPACITOR 330uF 10VC3 C92-0906-05 E CAPACITOR 330uF 10VC4 CE32BY1E470M E CAPACITOR 47uF 25V MC5 C92-0968-05 E CAPACITOR 470uF 25VC11 CK73HB1E104K C CAPACITOR 0.10uF 25V KC12 CK73HBB1H102K C CAPACITOR 1000pF 50V KC14 CK73FB1C106K C CAPACITOR 10uF 16V KC15 CK73HB1E104K C CAPACITOR 0.10uF 25V KC16 C93-1959-05 C CAPACITOR 0.1uF 16VC17 CK73HB1A474K C CAPACITOR 0.47uF 10V KC18 CK73HB1C105K C CAPACITOR 1.0uF 16V KC19 CK73HB1H103K C CAPACITOR 10000pF 50V KC20 CK73HBB1H471K C CAPACITOR 470pF 50V KC21 CK73HBB1H471K C CAPACITOR 470pF 50V KC22 CK73HBB1H471K C CAPACITOR 470pF 50V KC24 CK73HB1C105K C CAPACITOR 1.0uF 16V KC25 CK73HBB1H102K C CAPACITOR 1000pF 50V KC26 CC73HCH1H101J C CAPACITOR 100pF 50V JC27 CK73HBB1H102K C CAPACITOR 1000pF 50V KC28 CK73GB1H105K C CAPACITOR 1uF 50V KC29 CK73HBB1H222K C CAPACITOR 2200pF 50V KC30 CK73EB1H475KM C CAPACITOR 4.7uF 50V MC31 CK73HB1C105K C CAPACITOR 1.0uF 16V KC32 CK73EB1H475KM C CAPACITOR 4.7uF 50V MC33 CK73GB1H105K C CAPACITOR 1uF 50V KC34 CK73EB1H475KM C CAPACITOR 4.7uF 50V MC35 CK73HB1E104K C CAPACITOR 0.10uF 25V KC36 CK73HBB1H471K C CAPACITOR 470pF 50V KC37 CK73GB1H105K C CAPACITOR 1uF 50V KC38 CK73FB1C106K C CAPACITOR 10uF 16V KC39 CK73HBB1H471K C CAPACITOR 470pF 50V KC40 CK73GB0J106K C CAPACITOR 10uF 6.3V KC41 CK73GB1H105K C CAPACITOR 1uF 50V KC42 CK73HBB1H471K C CAPACITOR 470pF 50V KC43 CK73HB1C105K C CAPACITOR 1.0uF 16V KC44 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC45 CK73HB1E104K C CAPACITOR 0.10uF 25V KC46 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC47 CK73HBB1H102K C CAPACITOR 1000pF 50V KC48 CC73HCH1H101J C CAPACITOR 100pF 50V JC49 CK73HB1E104K C CAPACITOR 0.10uF 25V KC50 CK73GB1H105K C CAPACITOR 1uF 50V KC51 CK73HBB1H471K C CAPACITOR 470pF 50V KC52 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC53 CK73FB1C106K C CAPACITOR 10uF 16V KC54 CK73FB1C106K C CAPACITOR 10uF 16V KC55 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC56 CK73HBB1H102K C CAPACITOR 1000pF 50V KC57 CK73GB0J106K C CAPACITOR 10uF 6.3V KC58 CK73FB1C106K C CAPACITOR 10uF 16V KC59 CK73FB1C106K C CAPACITOR 10uF 16V KC60 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC61 CK73HB1H391K C CAPACITOR 390pF 50V KC62 CK73HB1H391K C CAPACITOR 390pF 50V KC63 CK730FA1H475K C CAPACITOR 4.7uF 50V KC64 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC65 CK730DT1C476K C CAPACITOR 47uF 16V KC66 CK73HB1E104K C CAPACITOR 0.10uF 25V KC67 CC73HCH1H470G C CAPACITOR 47pF 50V GC68 CK73HB1C105K C CAPACITOR 1.0uF 16V KC69 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC72 CK73HB1C105K C CAPACITOR 1.0uF 16V KC73 CK73HB1C105K C CAPACITOR 1.0uF 16V KC74 CK73HB1E104K C CAPACITOR 0.10uF 25V KC75 CK73HB1E473K C CAPACITOR 0.047uF 25V KC76 CK73HB1C105K C CAPACITOR 1.0uF 16V KC108 CK73HB1H103K C CAPACITOR 10000pF 50V KC109 CC73HCH1H330G C CAPACITOR 33pF 50V GC110 CC73HCH1H101J C CAPACITOR 100pF 50V JC111 CK73GB1H105K C CAPACITOR 1uF 50V KC112 CC73HCH1H101J C CAPACITOR 100pF 50V JC113 CK73FBB1H154K C CAPACITOR 0.15uF 50V KC114 CS77ABE1D100M TA E CAPACITOR 10uF 20V MC115 CK73FB1H473K C CAPACITOR 0.047uF 50V K

Symbol No. Part No. Part Name Description Local

C116 CC730AD1H104J C CAPACITOR 0.1uF 50V JC120 CC73HCH1H101J C CAPACITOR 100pF 50V JC123 CC73HCH1H221J C CAPACITOR 220pF 50V JC124 CK73HBB1H471K C CAPACITOR 470pF 50V KC125 CC73HCH1H101J C CAPACITOR 100pF 50V JC127 CC73HCH1H221J C CAPACITOR 220pF 50V JC128 CC73HCH1H020B C CAPACITOR 2pF 50V BC129 CC73HCH1HR75B C CAPACITOR 0.75pF 50V BC130 CK73FB1C106K C CAPACITOR 10uF 16V KC131 CC73HCH1H090B C CAPACITOR 9pF 50V BC132 CC73HCH1H090B C CAPACITOR 9pF 50V BC133 CC73HCH1H070B C CAPACITOR 7pF 50V BC134 CK73HBB1H471K C CAPACITOR 470pF 50V KC135 CC73HCH1H0R5B C CAPACITOR 0.5pF 50V BC136 CK73HBB1H471K C CAPACITOR 470pF 50V KC137 CC73HCH1H060B C CAPACITOR 6pF 50V BC138 CK73HBB1H471K C CAPACITOR 470pF 50V KC139 CC73HCH1H060B C CAPACITOR 6pF 50V BC140 CC73HCH1H1R5B C CAPACITOR 1.5pF 50V BC141 CC73HCH1H120G C CAPACITOR 12pF 50V GC142 CC73HCH1H1R5B C CAPACITOR 1.5pF 50V BC143 CC73HCH1H060B C CAPACITOR 6pF 50V BC145 CK73HBB1H102K C CAPACITOR 1000pF 50V KC146 CK73HBB1H471K C CAPACITOR 470pF 50V KC147 CK73HBB1H471K C CAPACITOR 470pF 50V KC148 CC73HCH1H040B C CAPACITOR 4pF 50V BC207 C93-1861-05 C CAPACITOR 10pF 250VC208 C93-1852-05 C CAPACITOR 6pF 250VC209 C93-1852-05 C CAPACITOR 6pF 250VC211 CK73HB1C105K C CAPACITOR 1.0uF 16V KC212 CK73HBB1H471K C CAPACITOR 470pF 50V KC213 CC73HCH1H220G C CAPACITOR 22pF 50V GC214 CK73HB1H103K C CAPACITOR 10000pF 50V KC216 CK73HBB1H102K C CAPACITOR 1000pF 50V KC218 CC73HCH1H680J C CAPACITOR 68pF 50V JC219 C93-1849-05 C CAPACITOR 5pF 250VC220 CK73HBB1H102K C CAPACITOR 1000pF 50V KC221 CK73HB1E473K C CAPACITOR 0.047uF 25V KC222 CK73HBB1H152K C CAPACITOR 1500pF 50V KC223 CC73HCH1H101J C CAPACITOR 100pF 50V JC224 CC73HCH1H470G C CAPACITOR 47pF 50V GC225 CK73HBB1H102K C CAPACITOR 1000pF 50V KC226 CC73HCH1H220G C CAPACITOR 22pF 50V GC227 CC73HCH1H390G C CAPACITOR 39pF 50V GC228 CC73HCH1H220G C CAPACITOR 22pF 50V GC229 CC73HCH1H120G C CAPACITOR 12pF 50V GC230 CK73HBB1H102K C CAPACITOR 1000pF 50V KC231 CC73HCH1H101J C CAPACITOR 100pF 50V JC232 CK73HBB1H102K C CAPACITOR 1000pF 50V KC233 CK73HBB1H102K C CAPACITOR 1000pF 50V KC234 CC73GCH1H330J C CAPACITOR 33pF 50V JC235 CK73HB1H103K C CAPACITOR 10000pF 50V KC236 CC73HCH1H101J C CAPACITOR 100pF 50V JC237 CK73HBB1H102K C CAPACITOR 1000pF 50V KC238 CK73GBB1H102K C CAPACITOR 1000pF 50V KC239 CK73HBB1H472K C CAPACITOR 4700pF 50V KC241 CK73GBB1H102K C CAPACITOR 1000pF 50V KC242 CC73HCH1H220G C CAPACITOR 22pF 50V GC243 CC73HCH1H470G C CAPACITOR 47pF 50V GC244 CC73HCH1H101J C CAPACITOR 100pF 50V JC245 CK73HBB1H102K C CAPACITOR 1000pF 50V KC247 CC73HCH1H101J C CAPACITOR 100pF 50V JC249 CC73HCH1H101J C CAPACITOR 100pF 50V JC250 C93-1900-05 C CAPACITOR 1000pF 630VC251 CK73GBB1H332K C CAPACITOR 3300pF 50V KC252 CK73HB1E104K C CAPACITOR 0.10uF 25V KC253 CC73GCH1H3R5B C CAPACITOR 3.5pF 50V BC254 CK73GBB1H102K C CAPACITOR 1000pF 50V KC255 CK73GBB1H102K C CAPACITOR 1000pF 50V KC256 C93-1900-05 C CAPACITOR 1000pF 630VC257 CK73GBB1H102K C CAPACITOR 1000pF 50V KC258 CK73GBB1H102K C CAPACITOR 1000pF 50V KC259 C93-1846-05 C CAPACITOR 4pF 250VC260 CK73HB1E104K C CAPACITOR 0.10uF 25V KC261 CC73GCH1H120G C CAPACITOR 12pF 50V GC262 C93-1887-05 C CAPACITOR 82pF 630VC263 CK73HBB1H472K C CAPACITOR 4700pF 50V KC264 C93-2041-05 C CAPACITOR 11pF 500V

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-5

Page 194: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

C265 C93-1852-05 C CAPACITOR 6pF 250VC266 CK73HBB1H102K C CAPACITOR 1000pF 50V KC267 C93-2035-05 C CAPACITOR 9pF 500VC268 C93-1852-05 C CAPACITOR 6pF 250VC270 CK73HBB1H102K C CAPACITOR 1000pF 50V KC271 CK73HBB1H102K C CAPACITOR 1000pF 50V KC272 CK73HBB1H102K C CAPACITOR 1000pF 50V KC274 CC73GCH1H150G C CAPACITOR 15pF 50V GC275 CC73GCH1H390J C CAPACITOR 39pF 50V JC277 C93-2041-05 C CAPACITOR 11pF 500VC278 C93-2031-05 C CAPACITOR 8pF 500VC279 C93-1852-05 C CAPACITOR 6pF 250VC280 C93-1838-05 C CAPACITOR 2pF 250VC304 CC73JCH1H101J C CAPACITOR 100pF 50V JC305 CC73JCH1H101J C CAPACITOR 100pF 50V JC306 CK73HBB1H102K C CAPACITOR 1000pF 50V KC307 CC73HCH1H070B C CAPACITOR 7pF 50V BC308 CC73HCH1H270J C CAPACITOR 27pF 50V JC309 CC73HCH1H120G C CAPACITOR 12pF 50V GC310 CC73HCH1H270J C CAPACITOR 27pF 50V JC311 CC73HCH1H150G C CAPACITOR 15pF 50V GC312 CC73HCH1H120G C CAPACITOR 12pF 50V GC313 CK73HBB1H102K C CAPACITOR 1000pF 50V KC314 CK73HB1H103K C CAPACITOR 10000pF 50V KC315 CK73HB1C105K C CAPACITOR 1.0uF 16V KC316 CK73HB1C105K C CAPACITOR 1.0uF 16V KC317 CC73HCH1H030B C CAPACITOR 3pF 50V BC318 CC73HCH1H050B C CAPACITOR 5pF 50V BC319 CC73HCH1H050B C CAPACITOR 5pF 50V BC320 CC73HCH1H390G C CAPACITOR 39pF 50V GC321 CK730BS0J106M C CAPACITOR 10uF 6.3V MC322 CC73HCH1H101J C CAPACITOR 100pF 50V JC323 CC73HCH1H101J C CAPACITOR 100pF 50V JC324 CK73HB1H103K C CAPACITOR 10000pF 50V KC325 CC73HCH1H101J C CAPACITOR 100pF 50V JC326 CC73HCH1H101J C CAPACITOR 100pF 50V JC327 CK73HB1C105K C CAPACITOR 1.0uF 16V KC328 CK73HB1E104K C CAPACITOR 0.10uF 25V KC329 CC73HCH1H101J C CAPACITOR 100pF 50V JC330 CK73HB1E104K C CAPACITOR 0.10uF 25V KC331 CK73HBB1H102K C CAPACITOR 1000pF 50V KC332 CC73HCH1H101J C CAPACITOR 100pF 50V JC333 CK73HBB1H471K C CAPACITOR 470pF 50V KC334 CC73HCH1H070B C CAPACITOR 7pF 50V BC335 CC73HCH1H101J C CAPACITOR 100pF 50V JC336 CK73HB1E104K C CAPACITOR 0.10uF 25V KC337 CK73HBB1H102K C CAPACITOR 1000pF 50V KC338 CK73HBB1H102K C CAPACITOR 1000pF 50V KC339 CC73HCH1H120G C CAPACITOR 12pF 50V GC340 CK73HB1E104K C CAPACITOR 0.10uF 25V KC341 CK73HBB1H102K C CAPACITOR 1000pF 50V KC342 CK73HB0J225K C CAPACITOR 2.2uF 6.3V KC343 CC73HCH1H101J C CAPACITOR 100pF 50V JC344 CK730BS0J106M C CAPACITOR 10uF 6.3V MC345 CK73HB1A474K C CAPACITOR 0.47uF 10V KC346 CK730BS0J106M C CAPACITOR 10uF 6.3V MC347 CK73HB1E104K C CAPACITOR 0.10uF 25V KC348 CK73HB1E104K C CAPACITOR 0.10uF 25V KC405 CK73HBB1H472K C CAPACITOR 4700pF 50V KC410 CK73HBB1H102K C CAPACITOR 1000pF 50V KC411 CK73HBB1H102K C CAPACITOR 1000pF 50V KC412 CK73HB1H103K C CAPACITOR 10000pF 50V KC414 CK73HB1C105K C CAPACITOR 1.0uF 16V KC415 C93-1959-05 C CAPACITOR 0.1uF 16VC416 C93-1959-05 C CAPACITOR 0.1uF 16VC417 CK73FXR0J226M C CAPACITOR 22uF 6.3V MC418 CK73HB1H103K C CAPACITOR 10000pF 50V KC419 C93-1959-05 C CAPACITOR 0.1uF 16VC420 C93-1959-05 C CAPACITOR 0.1uF 16VC421 CK73FXR0J226M C CAPACITOR 22uF 6.3V MC422 CK73GB0J106K C CAPACITOR 10uF 6.3V KC423 C93-1959-05 C CAPACITOR 0.1uF 16VC424 C93-1959-05 C CAPACITOR 0.1uF 16VC425 C93-1959-05 C CAPACITOR 0.1uF 16VC426 C93-1959-05 C CAPACITOR 0.1uF 16VC427 C93-1959-05 C CAPACITOR 0.1uF 16VC428 C93-1959-05 C CAPACITOR 0.1uF 16VC429 C93-1959-05 C CAPACITOR 0.1uF 16V

Symbol No. Part No. Part Name Description Local

C430 C93-1959-05 C CAPACITOR 0.1uF 16VC431 C93-1959-05 C CAPACITOR 0.1uF 16VC432 C93-1959-05 C CAPACITOR 0.1uF 16VC433 CC73JCH1H101J C CAPACITOR 100pF 50V JC434 C93-1959-05 C CAPACITOR 0.1uF 16VC435 C93-1959-05 C CAPACITOR 0.1uF 16VC436 CK73HB1H103K C CAPACITOR 10000pF 50V KC437 CK73GB0J106K C CAPACITOR 10uF 6.3V KC438 CK73HB1H103K C CAPACITOR 10000pF 50V KC439 CK73GB0J106K C CAPACITOR 10uF 6.3V KC440 C93-1959-05 C CAPACITOR 0.1uF 16VC441 C93-1959-05 C CAPACITOR 0.1uF 16VC442 C93-1959-05 C CAPACITOR 0.1uF 16VC443 C93-1959-05 C CAPACITOR 0.1uF 16VC444 C93-1959-05 C CAPACITOR 0.1uF 16VC445 CC73JCH1H101J C CAPACITOR 100pF 50V JC446 CK73GB0J106K C CAPACITOR 10uF 6.3V KC447 CK73HB1H103K C CAPACITOR 10000pF 50V KC448 C93-1959-05 C CAPACITOR 0.1uF 16VC449 CK73GB0J106K C CAPACITOR 10uF 6.3V KC450 CK73HB1H103K C CAPACITOR 10000pF 50V KC451 C93-1959-05 C CAPACITOR 0.1uF 16VC452 CK73GB0J106K C CAPACITOR 10uF 6.3V KC453 CK73GB0J106K C CAPACITOR 10uF 6.3V KC454 CC73HCH1H050B C CAPACITOR 5pF 50V BC455 C93-1959-05 C CAPACITOR 0.1uF 16VC456 CK73GB0J106K C CAPACITOR 10uF 6.3V KC457 C93-1959-05 C CAPACITOR 0.1uF 16VC458 C93-1959-05 C CAPACITOR 0.1uF 16VC459 C93-1959-05 C CAPACITOR 0.1uF 16VC460 C93-1959-05 C CAPACITOR 0.1uF 16VC461 C93-1959-05 C CAPACITOR 0.1uF 16VC462 CK73HB1C105K C CAPACITOR 1.0uF 16V KC463 C93-1959-05 C CAPACITOR 0.1uF 16VC464 C93-1959-05 C CAPACITOR 0.1uF 16VC465 C93-1959-05 C CAPACITOR 0.1uF 16VC466 C93-1959-05 C CAPACITOR 0.1uF 16VC467 C93-1959-05 C CAPACITOR 0.1uF 16VC468 C93-1959-05 C CAPACITOR 0.1uF 16VC469 C93-1959-05 C CAPACITOR 0.1uF 16VC470 C93-1959-05 C CAPACITOR 0.1uF 16VC471 C93-1959-05 C CAPACITOR 0.1uF 16VC472 C93-1959-05 C CAPACITOR 0.1uF 16VC473 C93-1959-05 C CAPACITOR 0.1uF 16VC474 C93-1959-05 C CAPACITOR 0.1uF 16VC475 C93-1959-05 C CAPACITOR 0.1uF 16VC476 C93-1959-05 C CAPACITOR 0.1uF 16VC477 C93-1959-05 C CAPACITOR 0.1uF 16VC478 CK73HB1C105K C CAPACITOR 1.0uF 16V KC479 C93-1959-05 C CAPACITOR 0.1uF 16VC480 CC73HCH1H180G C CAPACITOR 18pF 50V GC481 CC73HCH1H150G C CAPACITOR 15pF 50V GC482 CK73HB1E104K C CAPACITOR 0.10uF 25V KC483 CK73HB1A224K C CAPACITOR 0.22uF 10V KC484 CK73HBB1H102K C CAPACITOR 1000pF 50V KC485 C93-1959-05 C CAPACITOR 0.1uF 16VC486 C93-1959-05 C CAPACITOR 0.1uF 16VC487 CK73HB1H103K C CAPACITOR 10000pF 50V KC488 CK73HB1H103K C CAPACITOR 10000pF 50V KC489 CK73GB1H105K C CAPACITOR 1uF 50V KC490 CK73HB1E104K C CAPACITOR 0.10uF 25V KC491 CK73HB1H103K C CAPACITOR 10000pF 50V KC492 CC73JCH1H101J C CAPACITOR 100pF 50V JC493 CK73HB1C105K C CAPACITOR 1.0uF 16V KC494 C93-1959-05 C CAPACITOR 0.1uF 16VC495 C93-1959-05 C CAPACITOR 0.1uF 16VC497 C93-1959-05 C CAPACITOR 0.1uF 16VC498 CK73HB1H103K C CAPACITOR 10000pF 50V KC501 CC73JCH1H101J C CAPACITOR 100pF 50V JC502 C93-1959-05 C CAPACITOR 0.1uF 16VC503 CC73JCH1H101J C CAPACITOR 100pF 50V JC504 CC73HCH1H101J C CAPACITOR 100pF 50V JC505 CC73JCH1H101J C CAPACITOR 100pF 50V JC506 CC73JCH1H101J C CAPACITOR 100pF 50V JC507 CC73JCH1H101J C CAPACITOR 100pF 50V JC509 CC73JCH1H101J C CAPACITOR 100pF 50V JC510 CK73HB1E104K C CAPACITOR 0.10uF 25V KC511 CK73HB1E104K C CAPACITOR 0.10uF 25V K

Symbol No. Part No. Part Name Description Local

3-6(No.RA054<Rev.001>)

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C514 CK73HBB1H102K C CAPACITOR 1000pF 50V KC515 CK73HB1C105K C CAPACITOR 1.0uF 16V KC516 C93-1959-05 C CAPACITOR 0.1uF 16VC517 CK73HB1C105K C CAPACITOR 1.0uF 16V KC518 CC73HCH1H101J C CAPACITOR 100pF 50V JC519 CK73HB1E104K C CAPACITOR 0.10uF 25V KC520 CK73HB1E104K C CAPACITOR 0.10uF 25V KC521 CK73HB1E104K C CAPACITOR 0.10uF 25V KC522 CK73HB1H103K C CAPACITOR 10000pF 50V KC523 CK73HBB1H102K C CAPACITOR 1000pF 50V KC524 CC73HCH1H470G C CAPACITOR 47pF 50V GC525 CC73HCH1H470G C CAPACITOR 47pF 50V GC526 CK73HB1C105K C CAPACITOR 1.0uF 16V KC527 CK73HB1E104K C CAPACITOR 0.10uF 25V KC528 CK73HB1C105K C CAPACITOR 1.0uF 16V KC605 CK73HB1H103K C CAPACITOR 10000pF 50V KC606 CK73HB1H103K C CAPACITOR 10000pF 50V KC607 C93-1959-05 C CAPACITOR 0.1uF 16VC608 CK73HB1H103K C CAPACITOR 10000pF 50V KC609 CK73GB1H105K C CAPACITOR 1uF 50V KC610 CK73GB1H105K C CAPACITOR 1uF 50V KC611 CK73GB1H105K C CAPACITOR 1uF 50V KC612 CK73GB1H105K C CAPACITOR 1uF 50V KC613 CK73HBB1H102K C CAPACITOR 1000pF 50V KC614 CC73HCH1H101J C CAPACITOR 100pF 50V JC615 CC73HCH1H101J C CAPACITOR 100pF 50V JC616 CC73HCH1H101J C CAPACITOR 100pF 50V JC617 CC73HCH1H101J C CAPACITOR 100pF 50V JC618 CC73HCH1H101J C CAPACITOR 100pF 50V JC619 CC73HCH1H101J C CAPACITOR 100pF 50V JC620 CC73HCH1H101J C CAPACITOR 100pF 50V JC621 CK73HBB1E223K C CAPACITOR 0.022uF 25V KC622 CC73HCH1H101J C CAPACITOR 100pF 50V JC623 CC73HCH1H101J C CAPACITOR 100pF 50V JC624 CC73HCH1H101J C CAPACITOR 100pF 50V JC625 CC73HCH1H101J C CAPACITOR 100pF 50V JC626 CK73GB1H105K C CAPACITOR 1uF 50V KC627 CK73HB1A224K C CAPACITOR 0.22uF 10V KC628 CK73HB1A224K C CAPACITOR 0.22uF 10V KC629 CK73HBB1H102K C CAPACITOR 1000pF 50V KC630 CK73HBB1H102K C CAPACITOR 1000pF 50V KC631 CK73GB1H105K C CAPACITOR 1uF 50V KC632 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC633 C93-1959-05 C CAPACITOR 0.1uF 16VC634 C93-1959-05 C CAPACITOR 0.1uF 16VC635 CK73HB1H103K C CAPACITOR 10000pF 50V KC636 CK73GB0J106K C CAPACITOR 10uF 6.3V KC637 CK73GB0J106K C CAPACITOR 10uF 6.3V KC638 C93-1959-05 C CAPACITOR 0.1uF 16VC639 CK73HB1C105K C CAPACITOR 1.0uF 16V KC640 C93-1959-05 C CAPACITOR 0.1uF 16VC641 C93-1959-05 C CAPACITOR 0.1uF 16VC642 C93-1959-05 C CAPACITOR 0.1uF 16VC643 C93-1959-05 C CAPACITOR 0.1uF 16VC644 C93-1959-05 C CAPACITOR 0.1uF 16VC645 CK73HB1E104K C CAPACITOR 0.10uF 25V KC646 CK73GB0J106K C CAPACITOR 10uF 6.3V KC647 CK73HB1C105K C CAPACITOR 1.0uF 16V KC648 C93-1959-05 C CAPACITOR 0.1uF 16VC649 CK73HB1C105K C CAPACITOR 1.0uF 16V KC650 C93-1959-05 C CAPACITOR 0.1uF 16VC651 CC73JCH1H101J C CAPACITOR 100pF 50V JC652 CK73HB1C105K C CAPACITOR 1.0uF 16V KC653 CK73HBB1E223K C CAPACITOR 0.022uF 25V KC655 CK73HB1C105K C CAPACITOR 1.0uF 16V KC656 CK73GB0J106K C CAPACITOR 10uF 6.3V KC657 CK73HB1E104K C CAPACITOR 0.10uF 25V KC658 CC73HCH1H680J C CAPACITOR 68pF 50V JC659 CK73HB1C105K C CAPACITOR 1.0uF 16V KC660 CK73HBB1H102K C CAPACITOR 1000pF 50V KC661 CK73HB1C105K C CAPACITOR 1.0uF 16V KC663 CK73HBB1H471K C CAPACITOR 470pF 50V KC664 CK73GB1H105K C CAPACITOR 1uF 50V KC665 CK73GXR1C225K C CAPACITOR 2.2uF 16V K

R2 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR5 R92-1061-05 C RESISTOR 0.008ΩR21 RK73HB1J104J MG RESISTOR 100kΩ 1/16W J

Symbol No. Part No. Part Name Description Local

R22 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR23 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR24 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR25 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR26 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR27 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR28 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR29 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR30 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR31 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR32 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR33 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR34 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR35 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR36 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR37 RK73JB1H472J MG RESISTOR 4.7kΩ 1/20W JR38 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR39 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR40 RK73JB1H473J MG RESISTOR 47kΩ 1/20W JR41 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR42 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR43 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR44 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR45 RK73HH1J473D MG RESISTOR 47kΩ 1/16W DR46 RK73HH1J113D MG RESISTOR 11kΩ 1/16W DR47 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR48 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR49 RK73HB1J224J MG RESISTOR 220kΩ 1/16W JR50 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR51 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR52 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR53 RK73JB1H473J MG RESISTOR 47kΩ 1/20W JR54 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR55 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR56 RK73HB1J124J MG RESISTOR 120kΩ 1/16W JR57 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR58 RK73HH1J303D MG RESISTOR 30kΩ 1/16W DR59 RK73HH1J154D MG RESISTOR 150kΩ 1/16W DR60 RK73HH1J113D MG RESISTOR 11kΩ 1/16W DR61 RK73HH1J103D MG RESISTOR 10kΩ 1/16W DR62 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR63 RK73HH1J113D MG RESISTOR 11kΩ 1/16W DR64 R92-3769-05 MG RESISTOR 10Ω 0.25WR65 R92-3769-05 MG RESISTOR 10Ω 0.25WR66 RK73HB1J334J MG RESISTOR 330kΩ 1/16W JR67 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR68 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR69 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR70 RK73HH1J273D MG RESISTOR 27kΩ 1/16W DR71 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR72 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR73 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR74 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR75 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR76 RK73JB1H473J MG RESISTOR 47kΩ 1/20W JR77 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR78 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR79 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR80 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR81 RK73FB2B2R7J MG RESISTOR 2.7Ω 1/8W JR82 RK73FB2B3R3J MG RESISTOR 3.3Ω 1/8W JR83 RK73HH1J152D MG RESISTOR 1.5kΩ 1/16W DR84 RK73HH1J472D MG RESISTOR 4.7kΩ 1/16W DR108 RK73HB1J181J MG RESISTOR 180Ω 1/16W JR109 RK73HB1J181J MG RESISTOR 180Ω 1/16W JR112 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR113 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR114 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR115 RK73HB1J124J MG RESISTOR 120kΩ 1/16W JR116 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR117 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR118 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR119 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR120 RK73HB1J151J MG RESISTOR 150Ω 1/16W JR121 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR122 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR123 RK73HH1J391D MG RESISTOR 390Ω 1/16W DR124 RK73HB1J103J MG RESISTOR 10kΩ 1/16W J

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-7

Page 196: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

R125 RK73HB1J106J MG RESISTOR 10MΩ 1/16W JR127 RK73HB1J470J MG RESISTOR 47Ω 1/16W JR128 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR131 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR132 RK73HB1J122J MG RESISTOR 1.2kΩ 1/16W JR133 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR134 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR135 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR136 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR137 RN73HH1J151D MG RESISTOR 150Ω 0.063W DR138 RN73HH1J100D MF RESISTOR 10Ω 0.063W DR139 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR140 RK73HB1J562J MG RESISTOR 5.6kΩ 1/16W JR141 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR142 RK73HB1J181J MG RESISTOR 180Ω 1/16W JR143 RK73HB1J151J MG RESISTOR 150Ω 1/16W JR144 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR145 RK73HB1J330J MG RESISTOR 33Ω 1/16W JR146 RK73HB1J822J MG RESISTOR 8.2kΩ 1/16W JR147 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR148 RK73HB1J151J MG RESISTOR 150Ω 1/16W JR149 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR203 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR204 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR205 RK73GB2A181J MG RESISTOR 180Ω 1/10W JR206 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR207 RK73FB2B221J MG RESISTOR 220Ω 1/8W JR208 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR211 RK73HB1J474J MG RESISTOR 470kΩ 1/16W JR212 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR213 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR214 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR215 RK73HB1J390J MG RESISTOR 39Ω 1/16W JR216 RK73HB1J390J MG RESISTOR 39Ω 1/16W JR217 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR218 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR219 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR220 RK73HB1J121J MG RESISTOR 120Ω 1/16W JR221 RK73HB1J822J MG RESISTOR 8.2kΩ 1/16W JR222 RK73HB1J181J MG RESISTOR 180Ω 1/16W JR223 RK73HB1J560J MG RESISTOR 56Ω 1/16W JR224 RK73HB1J560J MG RESISTOR 56Ω 1/16W JR225 RK73HB1J181J MG RESISTOR 180Ω 1/16W JR226 RK73HB1J270J MG RESISTOR 27Ω 1/16W JR227 RK73HB1J332J MG RESISTOR 3.3kΩ 1/16W JR228 RK73HB1J562J MG RESISTOR 5.6kΩ 1/16W JR229 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR230 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR231 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR233 RK73GB2A121J MG RESISTOR 120Ω 1/10W JR235 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR238 RK73HB1J470J MG RESISTOR 47Ω 1/16W JR239 RK73GB2A271J MG RESISTOR 270Ω 1/10W JR240 RK73GB2A390J MG RESISTOR 39Ω 1/10W JR241 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR242 RK73GB2A271J MG RESISTOR 270Ω 1/10W JR243 RK73GB2A390J MG RESISTOR 39Ω 1/10W JR244 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR245 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR247 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR248 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR250 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR251 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR256 RK73GB2A221J MG RESISTOR 220Ω 1/10W JR259 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR260 RK73HB1J124J MG RESISTOR 120kΩ 1/16W JR261 RK73GB2A471J MG RESISTOR 470Ω 1/10W JR262 RK73FB2B101J MG RESISTOR 100Ω 1/8W JR265 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR266 RK73HB1J274J MG RESISTOR 270kΩ 1/16W JR267 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR269 RK73FB2B121J MG RESISTOR 120Ω 1/8W JR270 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR271 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR272 RK73GB2A121J MG RESISTOR 120Ω 1/10W JR273 RK73HB1J183J MG RESISTOR 18kΩ 1/16W JR274 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR275 RK73HB1J223J MG RESISTOR 22kΩ 1/16W J

Symbol No. Part No. Part Name Description Local

R276 RK73PB2H560J MG RESISTOR 56Ω 1/2W JR277 RK73PB2H560J MG RESISTOR 56Ω 1/2W JR278 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR279 RK73HB1J560J MG RESISTOR 56Ω 1/16W JR280 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR282 RK73HB1J273J MG RESISTOR 27kΩ 1/16W JR302 RK73HB1J821J MG RESISTOR 820Ω 1/16W JR303 RK73HB1J821J MG RESISTOR 820Ω 1/16W JR304 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR305 RK73HB1J181J MG RESISTOR 180Ω 1/16W JR307 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR308 RK73HB1J181J MG RESISTOR 180Ω 1/16W JR309 RK73HB1J470J MG RESISTOR 47Ω 1/16W JR310 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR311 RK73HH1J271D MG RESISTOR 270Ω 1/16W DR312 RK73HB1J5R6J MG RESISTOR 5.6Ω 1/16W JR313 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR314 RK73HB1J120J MG RESISTOR 12Ω 1/16W JR315 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR316 RK73HB1J474J MG RESISTOR 470kΩ 1/16W JR317 RK73HH1J473D MG RESISTOR 47kΩ 1/16W DR319 RK73HH1J273D MG RESISTOR 27kΩ 1/16W DR320 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR321 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR322 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR323 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR324 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR325 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR326 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR407 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR408 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR416 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR418 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR420 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR421 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR422 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR423 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR424 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR425 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR426 RK73HB1J153J MG RESISTOR 15kΩ 1/16W JR427 RK73HB1J333J MG RESISTOR 33kΩ 1/16W JR428 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR429 RK73HB1J681J MG RESISTOR 680Ω 1/16W JR431 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR432 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR433 RK73JB1H472J MG RESISTOR 4.7kΩ 1/20W JR434 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR435 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR436 RK73JB1H105J MG RESISTOR 1MΩ 1/20W JR437 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR438 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR439 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR440 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR441 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR442 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR443 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR444 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR445 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR446 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR447 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR448 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR449 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR450 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR451 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR452 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR453 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR454 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR455 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR456 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR457 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR458 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR459 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR460 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR461 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR462 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR463 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR464 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR465 RK73JB1H220J MG RESISTOR 22Ω 1/20W J

Symbol No. Part No. Part Name Description Local

3-8(No.RA054<Rev.001>)

Page 197: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

R466 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR467 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR468 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR469 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR470 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR471 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR472 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR473 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR474 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR475 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR476 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR477 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR478 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR479 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR480 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR481 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR482 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR483 RK73GH2A49R9D MG RESISTOR 49.9Ω 1/10W DR484 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR485 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR486 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR487 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR488 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR489 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR490 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR491 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR492 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR493 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR494 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR495 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR496 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR497 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR498 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR499 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR500 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR501 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR502 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR503 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR504 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR505 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR506 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR507 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR508 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR509 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR511 RK73HB1J333J MG RESISTOR 33kΩ 1/16W JR512 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR513 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR514 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR516 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR517 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR518 RK73HB1J393J MG RESISTOR 39kΩ 1/16W JR519 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR520 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR522 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR523 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR524 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR525 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR526 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR527 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR528 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR529 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR530 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR531 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR532 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR533 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR534 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR535 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR536 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR537 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR538 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR539 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR613 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR614 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR615 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR616 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR617 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR618 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR619 RK73HB1J103J MG RESISTOR 10kΩ 1/16W J

Symbol No. Part No. Part Name Description Local

R620 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR621 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR622 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR623 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR624 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR625 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR626 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR627 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR628 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR629 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR630 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR631 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR632 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR633 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR634 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR635 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR636 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR637 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR638 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR639 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR640 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR641 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR642 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR643 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR644 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR645 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR646 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR647 RK73HB1J682J MG RESISTOR 6.8kΩ 1/16W JR648 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR649 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR650 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR651 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR652 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR653 RK73HB1J682J MG RESISTOR 6.8kΩ 1/16W JR654 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR655 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR656 RK73FB2B102J MG RESISTOR 1kΩ 1/8W JR657 RK73FB2B102J MG RESISTOR 1kΩ 1/8W JR658 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR659 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR660 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR661 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR662 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR663 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR664 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR665 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR666 RK73HB1J683J MG RESISTOR 68kΩ 1/16W JR667 RK73HB1J123J MG RESISTOR 12kΩ 1/16W JR668 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR669 RK73HB1J681J MG RESISTOR 680Ω 1/16W JR670 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR671 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR672 RK73HH1J273D MG RESISTOR 27kΩ 1/16W DR673 RK73HB1J681J MG RESISTOR 680Ω 1/16W JR674 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR675 RK73HB1J682J MG RESISTOR 6.8kΩ 1/16W JR676 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR677 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR678 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR679 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR680 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR681 RK73HH1J152D MG RESISTOR 1.5kΩ 1/16W D

L1 L34-4902-05 AIR CORE COILL2 L34-4903-05 AIR CORE COILL3 L34-4903-05 AIR CORE COILL4 L34-4903-05 AIR CORE COILL5 L3E-0018-00 AIR CORE COILL6 L34-4848-05 AIR CORE COILL7 L34-4610-15 AIR CORE COILL11 LB73G0AK-001 CHIP FERRITEL12 LR79Z0FQ100M CHIP INDUCTORL13 LB73G0AM-004 CHIP FERRITEL14 LR79Z0AA150M CHIP INDUCTORL15 LB73G0AM-004 CHIP FERRITEL16 LB73G0AK-001 CHIP FERRITEL17 LB73H0AV-002 CHIP FERRITEL18 LB73H0AV-002 CHIP FERRITE

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-9

Page 198: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

TX-RX UNITXC1-183K-01 (NX-3820E,NX-3820GE,NX-3820HGK2,NX-3820HK2)XC1-183K-00 (NX-3820HGK,NX-3820HK)*Note : This part cannot be replaced.Therefore, this part is not supplied as a service part.

Block No. [0][2]

L19 LB73G0AK-001 CHIP FERRITEL107 LB73H0AV-003 CHIP FERRITEL108 L41-2785-53 CHIP INDUCTORL109 LB73H0AV-003 CHIP FERRITEL110 L41-2785-53 CHIP INDUCTORL111 L41-2785-53 CHIP INDUCTORL112 L41-2785-53 CHIP INDUCTORL113 L41-2785-53 CHIP INDUCTORL115 L41-2785-53 CHIP INDUCTORL116 L41-2785-53 CHIP INDUCTORL117 LB73H0AY-004 CHIP FERRITEL118 LK73H0AM47NJ M.CHIP INDUCTOR 47nHL119 LB73H0AY-004 CHIP FERRITEL121 LK73H0AM27NJ M.CHIP INDUCTOR 27nHL123 LK73H0AM27NJ M.CHIP INDUCTOR 27nHL124 LK73H0AM56NJ M.CHIP INDUCTOR 56nHL207 LB73H0AY-004 CHIP FERRITEL208 LB73H0AY-004 CHIP FERRITEL209 LK73H0AM56NJ M.CHIP INDUCTOR 56nHL210 L41-2785-53 CHIP INDUCTORL211 LK73H0AM56NJ M.CHIP INDUCTOR 56nHL212 LK73H0AM56NJ M.CHIP INDUCTOR 56nHL213 LK73H0AM47NJ M.CHIP INDUCTOR 47nHL214 L41-8275-53 CHIP INDUCTORL215 LB73F0AW-002 CHIP FERRITEL217 LB73H0AV-003 CHIP FERRITEL218 LB73G0BA-004 CHIP FERRITEL219 LB73Z0DF-001 CHIP FERRITEL220 LB73Z0DF-001 CHIP FERRITEL221 LB73Z0DF-001 CHIP FERRITEL222 L41-2775-53 CHIP INDUCTORL223 LR77Z0AAR27J CHIP INDUCTOR 0.27uHL224 LR79Z0GJR56G CHIP INDUCTORL225 LB73H0AY-004 CHIP FERRITEL226 LB73H0AV-003 CHIP FERRITEL302 LK73H0AMR10J M.CHIP INDUCTOR 0.1uHL303 LR79G0CQ56NG CHIP INDUCTORL304 LR79G0CQ47NG CHIP INDUCTORL305 LR79G0CQ82NG CHIP INDUCTORL306 LR79G0CQ8N2C CHIP INDUCTORL307 LR79G0CQR22G CHIP INDUCTORL308 LR79G0CQR12G CHIP INDUCTORL309 LR79G0CQ68NG CHIP INDUCTOR 68nHL310 LR79G0CQ82NG CHIP INDUCTORL311 LR79G0CQR33G CHIP INDUCTORL312 LK73H0AMR10J M.CHIP INDUCTOR 0.1uHL313 LR79G0CQ56NG CHIP INDUCTORL314 LK73H0AMR27J M.CHIP INDUCTORL315 LR79G0CQR10G CHIP INDUCTORL317 LK73H0AM33NJ M.CHIP INDUCTOR 33nHL401 LB73G0AK-001 CHIP FERRITEL402 LB73H0AV-003 CHIP FERRITEL403 LB73G0AK-001 CHIP FERRITEL404 LR77Z0AE4R7J CHIP INDUCTOR 4.7uHL405 LB73G0AM-004 CHIP FERRITEL406 L92-1101-05 CHIP FERRITEL407 L92-1101-05 CHIP FERRITEL408 L92-1101-05 CHIP FERRITEL409 L92-1101-05 CHIP FERRITEL410 LB73G0AK-001 CHIP FERRITEL411 LB73G0AK-001 CHIP FERRITEL412 LB73G0AK-001 CHIP FERRITEL413 LB73G0AK-001 CHIP FERRITEL414 LB73H0AV-002 CHIP FERRITEL415 L79-1984-05 FILTERL416 L79-1984-05 FILTERL417 LB73H0AY-002 CHIP FERRITEL418 LB73H0AY-002 CHIP FERRITEL419 L79-1984-05 FILTERL420 L92-1101-05 CHIP FERRITEL601 LB73H0AV-003 CHIP FERRITEL602 LB73H0AV-003 CHIP FERRITEL603 LB73H0AV-003 CHIP FERRITE

CN1 EC720AA-0560A FFC FPC CONNECN2 E40-6862-05 F.C.CONNECTORCN3 J19-5386-05 HOLDERCP301 RK74HB1J100J NET RESISTOR 10Ω 1/16W J

Symbol No. Part No. Part Name Description Local

CP302 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP303 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP401 RK74HB1J103J NET RESISTOR 10kΩ 1/16W JCP402 RK74HB1J222J NET RESISTOR 2.2kΩ 1/16W JCP403 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP404 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP405 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP406 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP407 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP408 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP409 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP410 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP411 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP412 RK74HB1J470J NET RESISTOR 47Ω 1/16W JCP413 RK74HB1J470J NET RESISTOR 47Ω 1/16W JCP414 RK74HB1J470J NET RESISTOR 47Ω 1/16W JCP601 RK74HB1J472J NET RESISTOR 4.7kΩ 1/16W JCP602 RK74HB1J472J NET RESISTOR 4.7kΩ 1/16W JCP604 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP605 RK74HB1J101J NET RESISTOR 100Ω 1/16W JE11 F1B-0085-00 SHIELDING CASEE101 F1B-0085-00 SHIELDING CASEF1 F53-0286-05 FUSEF2 F53-0286-05 FUSEF3 F53-0286-05 FUSEF4 FZA10BS-5R0 FUSE (CC)F5 FZA10BS-5R0 FUSE (CC)F6 F53-0286-05 FUSEIC201 RA60H1317A501 MOS ICIC601 LA4631VC-XE ANALOG ICJ1 E58-0567-05 SUB SOCKET DJ2 E1B-0001-00 3.5D PHONE JACKTH201 NCU15WF104F6S N THERMISTORTH202 NCU15WF104F6S N THERMISTORTH203 NCU15WF104F6S N THERMISTORTH401 NCU15WF104F6S N THERMISTORX401 L7H-0076-00 TCXOX402 L77-1802-05 QUARTZ CRYSTAL

Symbol No. Part No. Part Name Description Local

IC1 BA00DD0WHFP ICIC12 LXDC2HN18F163 ICIC13 BU31TD2WNVX ICIC14 TPS61041DRVR ICIC15 XC6215B122N-G ICIC16 XC6209B502P-G ICIC17 NJM2878F4-32 ICIC18 XC61CN5002N-G ICIC19 XC6223D321G-G ICIC20 XC6223D321P-G ICIC21 XC8102AA07-G ICIC22 MSP430G2533P0 ICIC23 XC6221D501G-G ICIC24 LXDC2XQ12A-252 ICIC25 MP2560DQ-LF-Z ICIC26 XC6221D501G-G ICIC101 NJM2904CRB1 ICIC202 BGU6104 ICIC203 BA3472FVM ICIC205 AD8315ARM ICIC301 NJG1608KB2 ICIC302 AK2401 IC

Symbol No. Part No. Part Name Description Local

3-10(No.RA054<Rev.001>)

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IC401 ------------ IC *NoteIC402 ------------ IC *NoteIC403 TC7SZ08FE ICIC404 ------------ IC *NoteIC405 BD11600NUX ICIC406 BD11600NUX ICIC407 TC7SET125FUF ICIC408 TC7SZ08FE ICIC409 TCA9555RTWR ICIC410 ADS7961SRHB ICIC411 DAC124S085CIS ICIC412 R2A20178NP ICIC413 XC61CN5002N-G ICIC414 BU7462NUX ICIC602 TC7WT126FU-F ICIC603 TC7WH126FK ICIC604 TCA9555RTWR ICIC605 ADM3202ARUZ ICIC606 TC7SET125FUF ICIC607 TLV32AIC3104I ICIC608 BU7462NUX ICIC609 XC6221D501G-G IC

Q11 LTC014EEBFS8 DIGI TRANSISTORQ12 TPCP8107-F FETQ13 LTC014EEBFS8 DIGI TRANSISTORQ14 LTC014TEBFS8 DIGI TRANSISTORQ15 LSCR523EBFS8 TRANSISTORQ16 LSAR523UBFS8 TRANSISTORQ17 TPCP8107-F FETQ18 LTC014EEBFS8 DIGI TRANSISTORQ19 VT6M1 FETQ20 SSM3J334R FETQ21 LTC014EEBFS8 DIGI TRANSISTORQ22 SSM3J334R FETQ23 LTC014EEBFS8 DIGI TRANSISTORQ25 EMD9 DIGI TRANSISTORQ101 2SC5108FT/Y/ TRANSISTORQ102 2SC5108FT/Y/ TRANSISTORQ103 EM6M2 FETQ104 2SD2654/W/ TRANSISTORQ105 MCH3914-H/8/ FETQ106 2SC5108FT/Y/ TRANSISTORQ201 RFM01U7PF FETQ202 LSCR523EBFS8 TRANSISTORQ204 LSCR523EBFS8 TRANSISTORQ205 EMD9 DIGI TRANSISTORQ206 VT6M1 FETQ301 SSM3K15AMFV FETQ401 2SC4617/S/ TRANSISTORQ402 SSM3K15AMFV FETQ403 SSM3K15AMFV FETQ404 LTC014TEBFS8 DIGI TRANSISTORQ601 SSM6N15AFEM DUAL FETQ602 LTC014TEBFS8 DIGI TRANSISTORQ603 TPCP8107-F FETQ604 LTC014TEBFS8 DIGI TRANSISTORQ605 SSM6N15AFEM DUAL FETQ606 SSM3J334R FET

D1 ST70-27F-572 ZENER DIODED13 EDZV5.6B ZENER DIODED14 RB521CM-30 DIODED15 1SS400SM DIODED16 RB060M-40 DIODED17 RB561VM-40 SCHOTTKY DIODED18 RB521CM-30 DIODED19 RB521CM-30 DIODED20 EDZV18B ZENER DIODED21 RB520SM-30 DIODED22 EDZV8.2B ZENER DIODED24 RB520SM-30 DIODED26 RB521CM-30 DIODED27 RB521CM-30 DIODED101 EDZV8.2B ZENER DIODED102 SMV1270-079LF VARI CAP DIODED103 1SV282-F VARI CAP DIODED104 1SV282-F VARI CAP DIODE

Symbol No. Part No. Part Name Description Local

D105 1SV282-F VARI CAP DIODED106 1SV282-F VARI CAP DIODED107 1SS400SM DIODED108 SMV1130-079LF VARI CAP DIODED201 EDZV5.6B ZENER DIODED202 RN142S DIODED204 RB706F-40 DIODED205 L8104 DIODED206 L8104 DIODED207 L8104 DIODED208 RN142S DIODED209 RN142S DIODED301 1SS390 DIODED302 1SS390 DIODED303 1SS400SM DIODED304 1SS400SM DIODED401 RB521CM-30 DIODED402 SPC10501A01 VARISTORD403 SPC10501A01 VARISTORD404 SPC10501A01 VARISTORD405 SPC10501A01 VARISTORD406 SPC10501A01 VARISTORD407 EDZV8.2B ZENER DIODED408 RB521CM-30 DIODED409 RB521CM-30 DIODED410 RB521CM-30 DIODED601 EDZV5.6B ZENER DIODED602 RB521CM-30 DIODED603 EDZV6.8B ZENER DIODED604 EDZV6.8B ZENER DIODED605 EDZV6.8B ZENER DIODED606 EDZV6.8B ZENER DIODED607 EDZV6.8B ZENER DIODED608 EDZV6.8B ZENER DIODED609 RB521CM-30 DIODED610 RB521CM-30 DIODED611 EDZV6.8B ZENER DIODED612 DA204U MULTIPLE DIODED613 DA204U MULTIPLE DIODED614 RB521CM-30 DIODED615 RB521CM-30 DIODED616 AVRM10270K101 VARISTORD617 AVRM10270K101 VARISTORD618 RB520SM-30 DIODED619 RB521CM-30 DIODE

C1 CE32EJ1E102M E CAPACITOR 1000uF 25V MC2 C92-0906-05 E CAPACITOR 330uF 10VC3 C92-0906-05 E CAPACITOR 330uF 10VC4 CE32BY1E470M E CAPACITOR 47uF 25V MC5 C92-0968-05 E CAPACITOR 470uF 25VC11 CK73HB1E104K C CAPACITOR 0.10uF 25V KC12 CK73HBB1H102K C CAPACITOR 1000pF 50V KC14 CK73FB1C106K C CAPACITOR 10uF 16V KC15 CK73HB1E104K C CAPACITOR 0.10uF 25V KC16 C93-1959-05 C CAPACITOR 0.1uF 16VC17 CK73HB1A474K C CAPACITOR 0.47uF 10V KC18 CK73HB1C105K C CAPACITOR 1.0uF 16V KC19 CK73HB1H103K C CAPACITOR 10000pF 50V KC20 CK73HBB1H471K C CAPACITOR 470pF 50V KC21 CK73HBB1H471K C CAPACITOR 470pF 50V KC22 CK73HBB1H471K C CAPACITOR 470pF 50V KC24 CK73HB1C105K C CAPACITOR 1.0uF 16V KC25 CK73HBB1H102K C CAPACITOR 1000pF 50V KC26 CC73HCH1H101J C CAPACITOR 100pF 50V JC27 CK73HBB1H102K C CAPACITOR 1000pF 50V KC28 CK73GB1H105K C CAPACITOR 1uF 50V KC29 CK73HBB1H222K C CAPACITOR 2200pF 50V KC30 CK73EB1H475KM C CAPACITOR 4.7uF 50V MC31 CK73HB1C105K C CAPACITOR 1.0uF 16V KC32 CK73EB1H475KM C CAPACITOR 4.7uF 50V MC33 CK73GB1H105K C CAPACITOR 1uF 50V KC34 CK73EB1H475KM C CAPACITOR 4.7uF 50V MC35 CK73HB1E104K C CAPACITOR 0.10uF 25V KC36 CK73HBB1H471K C CAPACITOR 470pF 50V KC37 CK73GB1H105K C CAPACITOR 1uF 50V KC38 CK73FB1C106K C CAPACITOR 10uF 16V KC39 CK73HBB1H471K C CAPACITOR 470pF 50V K

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-11

Page 200: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

C40 CK73GB0J106K C CAPACITOR 10uF 6.3V KC41 CK73GB1H105K C CAPACITOR 1uF 50V KC42 CK73HBB1H471K C CAPACITOR 470pF 50V KC43 CK73HB1C105K C CAPACITOR 1.0uF 16V KC44 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC45 CK73HB1E104K C CAPACITOR 0.10uF 25V KC46 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC47 CK73HBB1H102K C CAPACITOR 1000pF 50V KC48 CC73HCH1H101J C CAPACITOR 100pF 50V JC49 CK73HB1E104K C CAPACITOR 0.10uF 25V KC50 CK73GB1H105K C CAPACITOR 1uF 50V KC51 CK73HBB1H471K C CAPACITOR 470pF 50V KC52 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC53 CK73FB1C106K C CAPACITOR 10uF 16V KC54 CK73FB1C106K C CAPACITOR 10uF 16V KC55 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC56 CK73HBB1H102K C CAPACITOR 1000pF 50V KC57 CK73GB0J106K C CAPACITOR 10uF 6.3V KC58 CK73FB1C106K C CAPACITOR 10uF 16V KC59 CK73FB1C106K C CAPACITOR 10uF 16V KC60 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC61 CK73HB1H391K C CAPACITOR 390pF 50V KC62 CK73HB1H391K C CAPACITOR 390pF 50V KC63 CK730FA1H475K C CAPACITOR 4.7uF 50V KC64 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC65 CK730DT1C476K C CAPACITOR 47uF 16V KC66 CK73HB1E104K C CAPACITOR 0.10uF 25V KC67 CC73HCH1H470G C CAPACITOR 47pF 50V GC68 CK73HB1C105K C CAPACITOR 1.0uF 16V KC69 CK73GXR1C225K C CAPACITOR 2.2uF 16V KC72 CK73HB1C105K C CAPACITOR 1.0uF 16V KC73 CK73HB1C105K C CAPACITOR 1.0uF 16V KC74 CK73HB1E104K C CAPACITOR 0.10uF 25V KC75 CK73HB1E473K C CAPACITOR 0.047uF 25V KC76 CK73HB1C105K C CAPACITOR 1.0uF 16V KC101 CC73HCH1H040B C CAPACITOR 4pF 50V B

C102 CC73HCH1H3R5B C CAPACITOR 3.5pF 50V B3820E,3820GE,3820HGK2,3820HK2

C103 CC73HCH1H100B C CAPACITOR 10pF 50V B3820E,3820GE,3820HGK2,3820HK2

C103 CC73HCH1H101J C CAPACITOR 100pF 50V J 3820HGK,3820HK

C104 CC73HCH1H070B C CAPACITOR 7pF 50V B3820E,3820GE,3820HGK2,3820HK2

C105 CC73HCH1H470G C CAPACITOR 47pF 50V GC108 CK73HB1H103K C CAPACITOR 10000pF 50V KC109 CC73HCH1H330G C CAPACITOR 33pF 50V GC110 CC73HCH1H101J C CAPACITOR 100pF 50V JC111 CK73GB1H105K C CAPACITOR 1uF 50V KC112 CC73HCH1H101J C CAPACITOR 100pF 50V JC113 CK73FBB1H154K C CAPACITOR 0.15uF 50V KC114 CS77ABE1D100M TA E CAPACITOR 10uF 20V MC115 CK73FB1H473K C CAPACITOR 0.047uF 50V KC116 CC730AD1H104J C CAPACITOR 0.1uF 50V JC117 CC73HCH1H101J C CAPACITOR 100pF 50V JC119 CC73HCH1H470G C CAPACITOR 47pF 50V GC120 CC73HCH1H101J C CAPACITOR 100pF 50V J

C121 CC73HCH1H3R5B C CAPACITOR 3.5pF 50V B3820E,3820GE,3820HGK2,3820HK2

C122 CC73HCH1H1R5B C CAPACITOR 1.5pF 50V B3820E,3820GE,3820HGK2,3820HK2

C122 CC73HCH1H020B C CAPACITOR 2pF 50V B 3820HGK,3820HKC123 CC73HCH1H221J C CAPACITOR 220pF 50V JC124 CK73HBB1H471K C CAPACITOR 470pF 50V KC125 CC73HCH1H101J C CAPACITOR 100pF 50V J

C126 CC73HCH1H010B C CAPACITOR 1pF 50V B3820E,3820GE,3820HGK2,3820HK2

C126 CC73HCH1H020B C CAPACITOR 2pF 50V B 3820HGK,3820HKC127 CC73HCH1H221J C CAPACITOR 220pF 50V JC128 CC73HCH1H020B C CAPACITOR 2pF 50V BC129 CC73HCH1H0R5B C CAPACITOR 0.5pF 50V BC130 CK73FB1C106K C CAPACITOR 10uF 16V KC131 CC73HCH1H090B C CAPACITOR 9pF 50V BC132 CC73HCH1H090B C CAPACITOR 9pF 50V BC133 CC73HCH1H070B C CAPACITOR 7pF 50V BC134 CK73HBB1H471K C CAPACITOR 470pF 50V KC135 CC73HCH1H0R5B C CAPACITOR 0.5pF 50V BC136 CC73HCH1H101J C CAPACITOR 100pF 50V J

Symbol No. Part No. Part Name Description Local

C137 CC73HCH1H1R5B C CAPACITOR 1.5pF 50V B3820E,3820GE,3820HGK2,3820HK2

C137 CC73HCH1H020B C CAPACITOR 2pF 50V B 3820HGK,3820HKC138 CC73HCH1H470G C CAPACITOR 47pF 50V GC139 CC73HCH1H090B C CAPACITOR 9pF 50V BC140 CC73HCH1H0R5B C CAPACITOR 0.5pF 50V B

C141 CC73HCH1H120G C CAPACITOR 12pF 50V G3820E,3820GE,3820HGK2,3820HK2

C141 CC73HCH1H100B C CAPACITOR 10pF 50V B 3820HGK,3820HKC142 CC73HCH1H0R5B C CAPACITOR 0.5pF 50V BC143 CC73HCH1H090B C CAPACITOR 9pF 50V B

C144 CC73HCH1H040B C CAPACITOR 4pF 50V B3820E,3820GE,3820HGK2,3820HK2

C145 CK73HBB1H102K C CAPACITOR 1000pF 50V K

C146 CC73HCH1H040B C CAPACITOR 4pF 50V B3820E,3820GE,3820HGK2,3820HK2

C147 CC73HCH1H030B C CAPACITOR 3pF 50V B3820E,3820GE,3820HGK2,3820HK2

C148 CC73HCH1H030B C CAPACITOR 3pF 50V B3820E,3820GE,3820HGK2,3820HK2

C201 CC73HCH1H020B C CAPACITOR 2pF 50V B

C207 C93-1838-05 C CAPACITOR 2pF 250V3820E,3820GE,3820HGK2,3820HK2

C211 CK73HB1C105K C CAPACITOR 1.0uF 16V KC212 CK73HBB1H471K C CAPACITOR 470pF 50V KC213 CC73HCH1H121J C CAPACITOR 120pF 50V JC214 CK73HB1H103K C CAPACITOR 10000pF 50V KC216 CC73HCH1H150G C CAPACITOR 15pF 50V GC217 CC73HCH1H050B C CAPACITOR 5pF 50V BC218 CC73HCH1H150G C CAPACITOR 15pF 50V GC219 CC73HCH1H050B C CAPACITOR 5pF 50V BC220 CK73HBB1H471K C CAPACITOR 470pF 50V KC221 CK73HB1E473K C CAPACITOR 0.047uF 25V KC222 CK73HBB1H472K C CAPACITOR 4700pF 50V KC223 CC73HCH1H101J C CAPACITOR 100pF 50V JC224 CK73HBB1H471K C CAPACITOR 470pF 50V KC225 CK73HBB1H471K C CAPACITOR 470pF 50V KC226 CC73HCH1H050B C CAPACITOR 5pF 50V BC227 CC73HCH1H100B C CAPACITOR 10pF 50V BC228 CC73HCH1H050B C CAPACITOR 5pF 50V BC229 CC73HCH1H220G C CAPACITOR 22pF 50V GC230 CC73HCH1H080B C CAPACITOR 8pF 50V BC231 CC73HCH1H101J C CAPACITOR 100pF 50V JC232 CK73HBB1H471K C CAPACITOR 470pF 50V KC233 CK73HBB1H471K C CAPACITOR 470pF 50V KC234 CC73GCH1H040B C CAPACITOR 4pF 50V BC235 CK73HB1H103K C CAPACITOR 10000pF 50V KC236 CC73HCH1H470G C CAPACITOR 47pF 50V GC237 CC73HCH1H470G C CAPACITOR 47pF 50V GC238 CK73GB1H471K C CAPACITOR 470pF 50V KC239 CK73HBB1H472K C CAPACITOR 4700pF 50V KC241 CK73GB1H471K C CAPACITOR 470pF 50V KC242 CC73HCH1H220G C CAPACITOR 22pF 50V GC243 CC73HCH1H470G C CAPACITOR 47pF 50V GC244 CC73HCH1H101J C CAPACITOR 100pF 50V JC245 CK73HBB1H471K C CAPACITOR 470pF 50V KC247 CC73HCH1H101J C CAPACITOR 100pF 50V JC249 CC73HCH1H101J C CAPACITOR 100pF 50V JC250 C93-1866-05 C CAPACITOR 27pF 250VC251 CK73HBB1H471K C CAPACITOR 470pF 50V KC252 CK73HB1E104K C CAPACITOR 0.10uF 25V K

C253 CC73GCH1H1R5B C CAPACITOR 1.5pF 50V B3820E,3820GE,3820HGK2,3820HK2

C253 CC73GCH1H020B C CAPACITOR 2pF 50V B 3820HGK,3820HKC254 CK73GB1H471K C CAPACITOR 470pF 50V KC255 CK73GB1H471K C CAPACITOR 470pF 50V KC256 C93-1866-05 C CAPACITOR 27pF 250VC257 CK73GB1H471K C CAPACITOR 470pF 50V KC258 CK73GB1H471K C CAPACITOR 470pF 50V K

C259 C93-1846-05 C CAPACITOR 4pF 250V3820E,3820GE,3820HGK2,3820HK2

C259 C93-1852-05 C CAPACITOR 6pF 250V 3820HGK,3820HKC260 CK73HB1E104K C CAPACITOR 0.10uF 25V KC261 CC73GCH1H040B C CAPACITOR 4pF 50V BC262 C93-1932-05 C CAPACITOR 100pF 250VC263 CK73HBB1H472K C CAPACITOR 4700pF 50V K

C264 CC730DF2H130G C CAPACITOR 13pF 500V G3820E,3820GE,3820HGK2,3820HK2

Symbol No. Part No. Part Name Description Local

3-12(No.RA054<Rev.001>)

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C264 C93-2035-05 C CAPACITOR 9pF 500V 3820HGK,3820HK

C265 C93-1846-05 C CAPACITOR 4pF 250V3820E,3820GE,3820HGK2,3820HK2

C266 CC73HCH1H470G C CAPACITOR 47pF 50V G

C267 CC730DF2H130G C CAPACITOR 13pF 500V G3820E,3820GE,3820HGK2,3820HK2

C267 C93-2039-05 C CAPACITOR 10pF 500V 3820HGK,3820HKC268 C93-1852-05 C CAPACITOR 6pF 250VC270 CK73HBB1H471K C CAPACITOR 470pF 50V KC271 CK73HBB1H471K C CAPACITOR 470pF 50V KC272 CK73HBB1H471K C CAPACITOR 470pF 50V KC274 CC73GCH1H020B C CAPACITOR 2pF 50V BC304 CC73JCH1H101J C CAPACITOR 100pF 50V JC305 CC73JCH1H101J C CAPACITOR 100pF 50V JC306 CK73HBB1H471K C CAPACITOR 470pF 50V KC307 CC73HCH1H020B C CAPACITOR 2pF 50V BC308 CC73HCH1H080B C CAPACITOR 8pF 50V BC309 CC73HCH1H040B C CAPACITOR 4pF 50V BC310 CC73HCH1H070B C CAPACITOR 7pF 50V BC311 CC73HCH1H050B C CAPACITOR 5pF 50V BC312 CC73HCH1H040B C CAPACITOR 4pF 50V BC313 CK73HBB1H471K C CAPACITOR 470pF 50V KC314 CK73HB1H103K C CAPACITOR 10000pF 50V KC315 CK73HB1C105K C CAPACITOR 1.0uF 16V KC316 CK73HB1C105K C CAPACITOR 1.0uF 16V KC317 CC73HCH1H1R5B C CAPACITOR 1.5pF 50V BC319 CC73HCH1H060B C CAPACITOR 6pF 50V BC320 CC73HCH1H150G C CAPACITOR 15pF 50V GC321 CK730BS0J106M C CAPACITOR 10uF 6.3V MC322 CC73HCH1H101J C CAPACITOR 100pF 50V JC323 CC73HCH1H101J C CAPACITOR 100pF 50V JC324 CK73HB1H103K C CAPACITOR 10000pF 50V KC325 CC73HCH1H101J C CAPACITOR 100pF 50V JC326 CC73HCH1H101J C CAPACITOR 100pF 50V JC327 CK73HB1C105K C CAPACITOR 1.0uF 16V KC328 CK73HB1E104K C CAPACITOR 0.10uF 25V KC329 CC73HCH1H101J C CAPACITOR 100pF 50V JC330 CK73HB1E104K C CAPACITOR 0.10uF 25V KC331 CK73HBB1H102K C CAPACITOR 1000pF 50V KC332 CC73HCH1H101J C CAPACITOR 100pF 50V JC333 CC73HCH1H150G C CAPACITOR 15pF 50V GC334 CC73HCH1H030B C CAPACITOR 3pF 50V BC335 CC73HCH1H101J C CAPACITOR 100pF 50V JC336 CK73HB1E104K C CAPACITOR 0.10uF 25V K

C337 CK73HBB1H471K C CAPACITOR 470pF 50V K3820E,3820GE,3820HGK2,3820HK2

C337 CC73HCH1H470G C CAPACITOR 47pF 50V G 3820HGK,3820HKC338 CK73HBB1H471K C CAPACITOR 470pF 50V KC339 CC73HCH1H040B C CAPACITOR 4pF 50V BC340 CK73HB1E104K C CAPACITOR 0.10uF 25V KC341 CK73HBB1H471K C CAPACITOR 470pF 50V KC342 CK73HB0J225K C CAPACITOR 2.2uF 6.3V KC343 CC73HCH1H101J C CAPACITOR 100pF 50V JC344 CK730BS0J106M C CAPACITOR 10uF 6.3V MC345 CK73HB1A474K C CAPACITOR 0.47uF 10V KC346 CK730BS0J106M C CAPACITOR 10uF 6.3V MC347 CK73HB1E104K C CAPACITOR 0.10uF 25V KC405 CK73HBB1H472K C CAPACITOR 4700pF 50V KC410 CK73HBB1H102K C CAPACITOR 1000pF 50V KC411 CK73HBB1H102K C CAPACITOR 1000pF 50V KC412 CK73HB1H103K C CAPACITOR 10000pF 50V KC414 CK73HB1C105K C CAPACITOR 1.0uF 16V KC415 C93-1959-05 C CAPACITOR 0.1uF 16VC416 C93-1959-05 C CAPACITOR 0.1uF 16VC417 CK73FXR0J226M C CAPACITOR 22uF 6.3V MC418 CK73HB1H103K C CAPACITOR 10000pF 50V KC419 C93-1959-05 C CAPACITOR 0.1uF 16VC420 C93-1959-05 C CAPACITOR 0.1uF 16VC421 CK73FXR0J226M C CAPACITOR 22uF 6.3V MC422 CK73GB0J106K C CAPACITOR 10uF 6.3V KC423 C93-1959-05 C CAPACITOR 0.1uF 16VC424 C93-1959-05 C CAPACITOR 0.1uF 16VC425 C93-1959-05 C CAPACITOR 0.1uF 16VC426 C93-1959-05 C CAPACITOR 0.1uF 16VC427 C93-1959-05 C CAPACITOR 0.1uF 16VC428 C93-1959-05 C CAPACITOR 0.1uF 16VC429 C93-1959-05 C CAPACITOR 0.1uF 16VC430 C93-1959-05 C CAPACITOR 0.1uF 16V

Symbol No. Part No. Part Name Description Local

C431 C93-1959-05 C CAPACITOR 0.1uF 16VC432 C93-1959-05 C CAPACITOR 0.1uF 16VC433 CC73JCH1H101J C CAPACITOR 100pF 50V JC434 C93-1959-05 C CAPACITOR 0.1uF 16VC435 C93-1959-05 C CAPACITOR 0.1uF 16VC436 CK73HB1H103K C CAPACITOR 10000pF 50V KC437 CK73GB0J106K C CAPACITOR 10uF 6.3V KC438 CK73HB1H103K C CAPACITOR 10000pF 50V KC439 CK73GB0J106K C CAPACITOR 10uF 6.3V KC440 C93-1959-05 C CAPACITOR 0.1uF 16VC441 C93-1959-05 C CAPACITOR 0.1uF 16VC442 C93-1959-05 C CAPACITOR 0.1uF 16VC443 C93-1959-05 C CAPACITOR 0.1uF 16VC444 C93-1959-05 C CAPACITOR 0.1uF 16VC445 CC73JCH1H101J C CAPACITOR 100pF 50V JC446 CK73GB0J106K C CAPACITOR 10uF 6.3V KC447 CK73HB1H103K C CAPACITOR 10000pF 50V KC448 C93-1959-05 C CAPACITOR 0.1uF 16VC449 CK73GB0J106K C CAPACITOR 10uF 6.3V KC450 CK73HB1H103K C CAPACITOR 10000pF 50V KC451 C93-1959-05 C CAPACITOR 0.1uF 16VC452 CK73GB0J106K C CAPACITOR 10uF 6.3V KC453 CK73GB0J106K C CAPACITOR 10uF 6.3V KC454 CC73HCH1H050B C CAPACITOR 5pF 50V BC455 C93-1959-05 C CAPACITOR 0.1uF 16VC456 CK73GB0J106K C CAPACITOR 10uF 6.3V KC457 C93-1959-05 C CAPACITOR 0.1uF 16VC458 C93-1959-05 C CAPACITOR 0.1uF 16VC459 C93-1959-05 C CAPACITOR 0.1uF 16VC460 C93-1959-05 C CAPACITOR 0.1uF 16VC461 C93-1959-05 C CAPACITOR 0.1uF 16VC462 CK73HB1C105K C CAPACITOR 1.0uF 16V KC463 C93-1959-05 C CAPACITOR 0.1uF 16VC464 C93-1959-05 C CAPACITOR 0.1uF 16VC465 C93-1959-05 C CAPACITOR 0.1uF 16VC466 C93-1959-05 C CAPACITOR 0.1uF 16VC467 C93-1959-05 C CAPACITOR 0.1uF 16VC468 C93-1959-05 C CAPACITOR 0.1uF 16VC469 C93-1959-05 C CAPACITOR 0.1uF 16VC470 C93-1959-05 C CAPACITOR 0.1uF 16VC471 C93-1959-05 C CAPACITOR 0.1uF 16VC472 C93-1959-05 C CAPACITOR 0.1uF 16VC473 C93-1959-05 C CAPACITOR 0.1uF 16VC474 C93-1959-05 C CAPACITOR 0.1uF 16VC475 C93-1959-05 C CAPACITOR 0.1uF 16VC476 C93-1959-05 C CAPACITOR 0.1uF 16VC477 C93-1959-05 C CAPACITOR 0.1uF 16VC478 CK73HB1C105K C CAPACITOR 1.0uF 16V KC479 C93-1959-05 C CAPACITOR 0.1uF 16VC480 CC73HCH1H180G C CAPACITOR 18pF 50V GC481 CC73HCH1H150G C CAPACITOR 15pF 50V GC482 CK73HB1E104K C CAPACITOR 0.10uF 25V KC483 CK73HB1A224K C CAPACITOR 0.22uF 10V KC484 CK73HBB1H102K C CAPACITOR 1000pF 50V KC485 C93-1959-05 C CAPACITOR 0.1uF 16VC486 C93-1959-05 C CAPACITOR 0.1uF 16VC487 CK73HB1H103K C CAPACITOR 10000pF 50V KC488 CK73HB1H103K C CAPACITOR 10000pF 50V KC489 CK73GB1H105K C CAPACITOR 1uF 50V KC490 CK73HB1E104K C CAPACITOR 0.10uF 25V KC491 CK73HB1H103K C CAPACITOR 10000pF 50V KC492 CC73JCH1H101J C CAPACITOR 100pF 50V JC493 CK73HB1C105K C CAPACITOR 1.0uF 16V KC494 C93-1959-05 C CAPACITOR 0.1uF 16VC495 C93-1959-05 C CAPACITOR 0.1uF 16VC497 C93-1959-05 C CAPACITOR 0.1uF 16VC498 CK73HB1H103K C CAPACITOR 10000pF 50V KC501 CC73JCH1H101J C CAPACITOR 100pF 50V JC502 C93-1959-05 C CAPACITOR 0.1uF 16VC503 CC73JCH1H101J C CAPACITOR 100pF 50V JC504 CC73HCH1H101J C CAPACITOR 100pF 50V JC505 CC73JCH1H101J C CAPACITOR 100pF 50V JC506 CC73JCH1H101J C CAPACITOR 100pF 50V JC507 CC73JCH1H101J C CAPACITOR 100pF 50V JC509 CC73JCH1H101J C CAPACITOR 100pF 50V JC510 CK73HB1E104K C CAPACITOR 0.10uF 25V KC511 CK73HB1E104K C CAPACITOR 0.10uF 25V KC514 CK73HBB1H102K C CAPACITOR 1000pF 50V K

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-13

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C515 CK73HB1C105K C CAPACITOR 1.0uF 16V KC516 C93-1959-05 C CAPACITOR 0.1uF 16VC517 CK73HB1C105K C CAPACITOR 1.0uF 16V KC518 CC73HCH1H101J C CAPACITOR 100pF 50V JC519 CK73HB1E104K C CAPACITOR 0.10uF 25V KC520 CK73HB1E104K C CAPACITOR 0.10uF 25V KC521 CK73HB1E104K C CAPACITOR 0.10uF 25V KC522 CK73HB1H103K C CAPACITOR 10000pF 50V KC523 CK73HBB1H102K C CAPACITOR 1000pF 50V KC524 CC73HCH1H470G C CAPACITOR 47pF 50V GC525 CC73HCH1H470G C CAPACITOR 47pF 50V GC526 CK73HB1C105K C CAPACITOR 1.0uF 16V KC527 CK73HB1E104K C CAPACITOR 0.10uF 25V KC528 CK73HB1C105K C CAPACITOR 1.0uF 16V KC605 CK73HB1H103K C CAPACITOR 10000pF 50V KC606 CK73HB1H103K C CAPACITOR 10000pF 50V KC607 C93-1959-05 C CAPACITOR 0.1uF 16VC608 CK73HB1H103K C CAPACITOR 10000pF 50V KC609 CK73GB1H105K C CAPACITOR 1uF 50V KC610 CK73GB1H105K C CAPACITOR 1uF 50V KC611 CK73GB1H105K C CAPACITOR 1uF 50V KC612 CK73GB1H105K C CAPACITOR 1uF 50V KC613 CK73HBB1H102K C CAPACITOR 1000pF 50V KC614 CC73HCH1H101J C CAPACITOR 100pF 50V JC615 CC73HCH1H101J C CAPACITOR 100pF 50V JC616 CC73HCH1H101J C CAPACITOR 100pF 50V JC617 CC73HCH1H101J C CAPACITOR 100pF 50V JC618 CC73HCH1H101J C CAPACITOR 100pF 50V JC619 CC73HCH1H101J C CAPACITOR 100pF 50V JC620 CC73HCH1H101J C CAPACITOR 100pF 50V JC621 CK73HBB1E223K C CAPACITOR 0.022uF 25V KC622 CC73HCH1H101J C CAPACITOR 100pF 50V JC623 CC73HCH1H101J C CAPACITOR 100pF 50V JC624 CC73HCH1H101J C CAPACITOR 100pF 50V JC625 CC73HCH1H101J C CAPACITOR 100pF 50V JC626 CK73GB1H105K C CAPACITOR 1uF 50V KC627 CK73HB1A224K C CAPACITOR 0.22uF 10V KC628 CK73HB1A224K C CAPACITOR 0.22uF 10V KC629 CK73HBB1H102K C CAPACITOR 1000pF 50V KC630 CK73HBB1H102K C CAPACITOR 1000pF 50V KC631 CK73GB1H105K C CAPACITOR 1uF 50V KC632 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC633 C93-1959-05 C CAPACITOR 0.1uF 16VC634 C93-1959-05 C CAPACITOR 0.1uF 16VC635 CK73HB1H103K C CAPACITOR 10000pF 50V KC636 CK73GB0J106K C CAPACITOR 10uF 6.3V KC637 CK73GB0J106K C CAPACITOR 10uF 6.3V KC638 C93-1959-05 C CAPACITOR 0.1uF 16VC639 CK73HB1C105K C CAPACITOR 1.0uF 16V KC640 C93-1959-05 C CAPACITOR 0.1uF 16VC641 C93-1959-05 C CAPACITOR 0.1uF 16VC642 C93-1959-05 C CAPACITOR 0.1uF 16VC643 C93-1959-05 C CAPACITOR 0.1uF 16VC644 C93-1959-05 C CAPACITOR 0.1uF 16VC645 CK73HB1E104K C CAPACITOR 0.10uF 25V KC646 CK73GB0J106K C CAPACITOR 10uF 6.3V KC647 CK73HB1C105K C CAPACITOR 1.0uF 16V KC648 C93-1959-05 C CAPACITOR 0.1uF 16VC649 CK73HB1C105K C CAPACITOR 1.0uF 16V KC650 C93-1959-05 C CAPACITOR 0.1uF 16VC651 CC73JCH1H101J C CAPACITOR 100pF 50V JC652 CK73HB1C105K C CAPACITOR 1.0uF 16V KC653 CK73HBB1E223K C CAPACITOR 0.022uF 25V KC655 CK73HB1C105K C CAPACITOR 1.0uF 16V KC656 CK73GB0J106K C CAPACITOR 10uF 6.3V KC657 CK73HB1E104K C CAPACITOR 0.10uF 25V KC658 CC73HCH1H680J C CAPACITOR 68pF 50V JC659 CK73HB1C105K C CAPACITOR 1.0uF 16V KC660 CK73HBB1H102K C CAPACITOR 1000pF 50V KC661 CK73HB1C105K C CAPACITOR 1.0uF 16V KC663 CK73HBB1H471K C CAPACITOR 470pF 50V KC664 CK73GB1H105K C CAPACITOR 1uF 50V KC665 CK73GXR1C225K C CAPACITOR 2.2uF 16V K

R2 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR3 RK73HB1J000J MG RESISTOR 0Ω 1/16W J 3820HGK,3820HK

R4 RK73HB1J000J MG RESISTOR 0Ω 1/16W J 3820E,3820GE,3820HGK2,3820HK2

Symbol No. Part No. Part Name Description Local

R5 R92-1061-05 C RESISTOR 0.008ΩR21 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR22 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR23 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR24 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR25 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR26 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR27 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR28 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR29 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR30 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR31 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR32 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR33 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR34 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR35 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR36 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR37 RK73JB1H472J MG RESISTOR 4.7kΩ 1/20W JR38 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR39 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR40 RK73JB1H473J MG RESISTOR 47kΩ 1/20W JR41 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR42 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR43 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR44 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR45 RK73HH1J473D MG RESISTOR 47kΩ 1/16W DR46 RK73HH1J113D MG RESISTOR 11kΩ 1/16W DR47 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR48 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR49 RK73HB1J224J MG RESISTOR 220kΩ 1/16W JR50 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR51 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR52 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR53 RK73JB1H473J MG RESISTOR 47kΩ 1/20W JR54 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR55 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR56 RK73HB1J124J MG RESISTOR 120kΩ 1/16W JR57 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR58 RK73HH1J303D MG RESISTOR 30kΩ 1/16W DR59 RK73HH1J154D MG RESISTOR 150kΩ 1/16W DR60 RK73HH1J113D MG RESISTOR 11kΩ 1/16W DR61 RK73HH1J103D MG RESISTOR 10kΩ 1/16W DR62 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR63 RK73HH1J113D MG RESISTOR 11kΩ 1/16W DR64 R92-3769-05 MG RESISTOR 10Ω 0.25WR65 R92-3769-05 MG RESISTOR 10Ω 0.25WR66 RK73HB1J334J MG RESISTOR 330kΩ 1/16W JR67 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR68 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR69 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR70 RK73HH1J273D MG RESISTOR 27kΩ 1/16W DR71 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR72 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR73 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR74 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR75 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR76 RK73JB1H473J MG RESISTOR 47kΩ 1/20W JR77 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR78 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR79 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR80 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR81 RK73FB2B2R7J MG RESISTOR 2.7Ω 1/8W JR82 RK73FB2B3R3J MG RESISTOR 3.3Ω 1/8W JR83 RK73HH1J152D MG RESISTOR 1.5kΩ 1/16W DR84 RK73HH1J472D MG RESISTOR 4.7kΩ 1/16W DR103 RK73HB1J392J MG RESISTOR 3.9kΩ 1/16W JR104 RK73HB1J182J MG RESISTOR 1.8kΩ 1/16W J

R105 RK73HB1J680J MG RESISTOR 68Ω 1/16W J3820E,3820GE,3820HGK2,3820HK2

R105 RK73HB1J101J MG RESISTOR 100Ω 1/16W J 3820HGK,3820HKR106 RK73HB1J821J MG RESISTOR 820Ω 1/16W J 3820HGK,3820HKR108 RK73HB1J000J MG RESISTOR 0Ω 1/16W J 3820HGK,3820HKR109 RK73HB1J000J MG RESISTOR 0Ω 1/16W J 3820HGK,3820HKR110 RK73HB1J000J MG RESISTOR 0Ω 1/16W J 3820HGK,3820HKR111 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR112 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR113 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR114 RK73HB1J223J MG RESISTOR 22kΩ 1/16W J

Symbol No. Part No. Part Name Description Local

3-14(No.RA054<Rev.001>)

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R115 RK73HB1J124J MG RESISTOR 120kΩ 1/16W JR116 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR117 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR118 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR119 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR120 RK73HB1J221J MG RESISTOR 220Ω 1/16W JR121 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR122 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR123 RK73HH1J391D MG RESISTOR 390Ω 1/16W DR124 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR125 RK73HB1J106J MG RESISTOR 10MΩ 1/16W JR126 RK73HB1J392J MG RESISTOR 3.9kΩ 1/16W JR127 RK73HB1J470J MG RESISTOR 47Ω 1/16W JR128 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR129 RK73HB1J182J MG RESISTOR 1.8kΩ 1/16W J

R130 RK73HB1J680J MG RESISTOR 68Ω 1/16W J3820E,3820GE,3820HGK2,3820HK2

R130 RK73HB1J101J MG RESISTOR 100Ω 1/16W J 3820HGK,3820HKR131 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR132 RK73HB1J123J MG RESISTOR 12kΩ 1/16W JR133 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR134 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR135 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR136 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR137 RN73HH1J151D MG RESISTOR 150Ω 0.063W DR138 RN73HH1J100D MF RESISTOR 10Ω 0.063W DR139 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR140 RK73HB1J182J MG RESISTOR 1.8kΩ 1/16W JR141 RK73HB1J272J MG RESISTOR 2.7kΩ 1/16W JR142 RK73HB1J560J MG RESISTOR 56Ω 1/16W JR143 RK73HB1J151J MG RESISTOR 150Ω 1/16W JR145 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR146 RK73HB1J000J MG RESISTOR 0Ω 1/16W J 3820HGK,3820HKR147 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR203 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR204 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR211 RK73HB1J474J MG RESISTOR 470kΩ 1/16W JR212 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR213 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR214 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR215 RK73HB1J390J MG RESISTOR 39Ω 1/16W JR216 RK73HB1J390J MG RESISTOR 39Ω 1/16W JR217 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR218 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR219 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR220 RK73HB1J121J MG RESISTOR 120Ω 1/16W JR221 RK73HB1J822J MG RESISTOR 8.2kΩ 1/16W JR222 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR223 RK73HB1J390J MG RESISTOR 39Ω 1/16W JR224 RK73HB1J390J MG RESISTOR 39Ω 1/16W JR225 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR226 RK73HB1J470J MG RESISTOR 47Ω 1/16W JR227 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR228 RK73HB1J392J MG RESISTOR 3.9kΩ 1/16W JR229 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR230 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR231 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR233 RK73GB2A151J MG RESISTOR 150Ω 1/10W JR235 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR238 RK73HB1J470J MG RESISTOR 47Ω 1/16W JR239 RK73GB2A271J MG RESISTOR 270Ω 1/10W JR240 RK73GB2A390J MG RESISTOR 39Ω 1/10W JR241 RK73HB1J272J MG RESISTOR 2.7kΩ 1/16W JR242 RK73GB2A271J MG RESISTOR 270Ω 1/10W JR243 RK73GB2A390J MG RESISTOR 39Ω 1/10W JR244 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR245 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR247 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR248 RK73HB1J271J MG RESISTOR 270Ω 1/16W JR250 RK73HB1J124J MG RESISTOR 120kΩ 1/16W JR251 RK73HB1J153J MG RESISTOR 15kΩ 1/16W JR256 RK73GB2A391J MG RESISTOR 390Ω 1/10W JR258 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR259 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR260 RK73HB1J124J MG RESISTOR 120kΩ 1/16W JR261 RK73HB1J470J MG RESISTOR 47Ω 1/16W J

R262 RK73FB2B101J MG RESISTOR 100Ω 1/8W J3820E,3820GE,3820HGK2,3820HK2

Symbol No. Part No. Part Name Description Local

R262 RK73FB2B910J MG RESISTOR 91Ω 1/8W J 3820HGK,3820HKR265 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR266 RK73HB1J274J MG RESISTOR 270kΩ 1/16W JR267 RK73HB1J392J MG RESISTOR 3.9kΩ 1/16W JR268 RK73GB2A560J MG RESISTOR 56Ω 1/10W J

R269 RK73FB2B820J MG RESISTOR 82Ω 1/8W J3820E,3820GE,3820HGK2,3820HK2

R269 RK73FB2B101J MG RESISTOR 100Ω 1/8W J 3820HGK,3820HKR270 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR271 RK73HB1J102J MG RESISTOR 1kΩ 1/16W J

R272 RK73GB2A560J MG RESISTOR 56Ω 1/10W J3820E,3820GE,3820HGK2,3820HK2

R273 RK73HB1J183J MG RESISTOR 18kΩ 1/16W JR274 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR275 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR276 RK73PB2H560J MG RESISTOR 56Ω 1/2W JR277 RK73PB2H560J MG RESISTOR 56Ω 1/2W JR278 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR280 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR281 RK73GB2A560J MG RESISTOR 56Ω 1/10W JR282 RK73HB1J333J MG RESISTOR 33kΩ 1/16W JR302 RK73HB1J821J MG RESISTOR 820Ω 1/16W JR303 RK73HB1J821J MG RESISTOR 820Ω 1/16W JR304 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR305 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR307 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR308 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR309 RK73HB1J470J MG RESISTOR 47Ω 1/16W JR310 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR311 RK73HH1J391D MG RESISTOR 390Ω 1/16W DR312 RK73HB1J5R6J MG RESISTOR 5.6Ω 1/16W JR313 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR314 RK73HB1J120J MG RESISTOR 12Ω 1/16W JR315 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR316 RK73HB1J474J MG RESISTOR 470kΩ 1/16W JR317 RK73HH1J473D MG RESISTOR 47kΩ 1/16W DR318 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR319 RK73HH1J273D MG RESISTOR 27kΩ 1/16W DR320 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR321 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR322 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR323 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR324 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR325 RK73HB1J151J MG RESISTOR 150Ω 1/16W JR326 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR407 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR408 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR416 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR418 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR420 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR421 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR422 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR423 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR424 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR425 RK73HB1J220J MG RESISTOR 22Ω 1/16W JR426 RK73HB1J153J MG RESISTOR 15kΩ 1/16W JR427 RK73HB1J333J MG RESISTOR 33kΩ 1/16W JR428 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR429 RK73HB1J681J MG RESISTOR 680Ω 1/16W JR431 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR432 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR433 RK73JB1H472J MG RESISTOR 4.7kΩ 1/20W JR434 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR435 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR436 RK73JB1H105J MG RESISTOR 1MΩ 1/20W JR437 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR438 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR439 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR440 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR441 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR442 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR443 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR444 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR445 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR446 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR447 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR448 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR449 RK73JB1H220J MG RESISTOR 22Ω 1/20W J

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-15

Page 204: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

R450 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR451 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR452 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR453 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR454 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR455 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR456 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR457 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR458 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR459 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR460 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR461 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR462 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR463 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR464 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR465 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR466 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR467 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR468 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR469 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR470 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR471 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR472 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR473 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR474 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR475 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR476 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR477 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR478 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR479 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR480 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR481 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR482 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR483 RK73GH2A49R9D MG RESISTOR 49.9Ω 1/10W DR484 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR485 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR486 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR487 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR488 RK73JB1H102J MG RESISTOR 1kΩ 1/20W JR489 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR490 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR491 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR492 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR493 RK73JB1H220J MG RESISTOR 22Ω 1/20W JR494 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR495 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR496 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR497 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR498 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR499 RK73JB1H103J MG RESISTOR 10kΩ 1/20W JR500 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR501 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR502 RK73JB1H104J MG RESISTOR 100kΩ 1/20W JR503 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR504 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR505 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR506 RK73HH1J104D MG RESISTOR 100kΩ 1/16W DR507 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR508 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR509 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR511 RK73HB1J333J MG RESISTOR 33kΩ 1/16W JR512 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR513 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR514 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR516 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR517 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR518 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR519 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR520 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR522 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR523 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR524 RK73FB2B332J MG RESISTOR 3.3kΩ 1/8W JR525 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR526 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR527 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR528 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR529 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR530 RK73HH1J223D MG RESISTOR 22kΩ 1/16W D

Symbol No. Part No. Part Name Description Local

R531 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR532 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR533 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR534 RK73HH1J223D MG RESISTOR 22kΩ 1/16W DR535 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR536 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR537 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR538 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR539 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR613 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR614 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR615 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR616 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR617 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR618 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR619 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR620 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR621 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR622 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR623 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR624 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR625 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR626 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR627 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR628 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR629 RK73HB1J472J MG RESISTOR 4.7kΩ 1/16W JR630 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR631 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR632 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR633 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR634 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR635 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR636 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR637 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR638 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR639 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR640 RK73HB1J471J MG RESISTOR 470Ω 1/16W JR641 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR642 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR643 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR644 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR645 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR646 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR647 RK73HB1J682J MG RESISTOR 6.8kΩ 1/16W JR648 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR649 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR650 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR651 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR652 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR653 RK73HB1J682J MG RESISTOR 6.8kΩ 1/16W JR654 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR655 RK73HB1J223J MG RESISTOR 22kΩ 1/16W JR656 RK73FB2B102J MG RESISTOR 1kΩ 1/8W JR657 RK73FB2B102J MG RESISTOR 1kΩ 1/8W JR658 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR659 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR660 RK73HB1J100J MG RESISTOR 10Ω 1/16W JR661 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR662 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR663 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR664 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR665 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR666 RK73HB1J683J MG RESISTOR 68kΩ 1/16W JR667 RK73HB1J123J MG RESISTOR 12kΩ 1/16W JR668 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR669 RK73HB1J681J MG RESISTOR 680Ω 1/16W JR670 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR671 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR672 RK73HH1J273D MG RESISTOR 27kΩ 1/16W DR673 RK73HB1J681J MG RESISTOR 680Ω 1/16W JR674 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR675 RK73HB1J682J MG RESISTOR 6.8kΩ 1/16W JR676 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR677 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR678 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR679 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR680 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR681 RK73HH1J152D MG RESISTOR 1.5kΩ 1/16W D

Symbol No. Part No. Part Name Description Local

3-16(No.RA054<Rev.001>)

Page 205: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

L1 L34-4902-05 AIR CORE COIL

L2 L34-4758-05 AIR CORE COIL3820E,3820GE,3820HGK2,3820HK2

L2 L34-4743-05 AIR CORE COIL 3820HGK,3820HKL3 L34-4758-05 AIR CORE COILL4 L34-4758-05 AIR CORE COILL5 L34-4743-05 AIR CORE COILL6 L34-4848-05 AIR CORE COILL7 L34-4610-15 AIR CORE COILL11 LB73G0AK-001 CHIP FERRITEL12 LR79Z0FQ100M CHIP INDUCTORL13 LB73G0AM-004 CHIP FERRITEL14 LR79Z0AA150M CHIP INDUCTORL15 LB73G0AM-004 CHIP FERRITEL16 LB73G0AK-001 CHIP FERRITEL17 LB73H0AV-002 CHIP FERRITEL18 LB73H0AV-002 CHIP FERRITEL19 LB73G0AK-001 CHIP FERRITE

L101 LK73H0AM12NJ M.CHIP INDUCTOR 12nH3820E,3820GE,3820HGK2,3820HK2

L101 LK73H0AM8N2J M.CHIP INDUCTOR 8.2nH 3820HGK,3820HK

L102 LK73H0BX5N1B M.CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L103 LK73H0AM8N2J M.CHIP INDUCTOR 8.2nH3820E,3820GE,3820HGK2,3820HK2

L104 LK73H0BX5N1B M.CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L105 LK73H0AM8N2J M.CHIP INDUCTOR 8.2nH3820E,3820GE,3820HGK2,3820HK2

L106 LK73H0AM15NJ M.CHIP INDUCTOR 15nH3820E,3820GE,3820HGK2,3820HK2

L106 LK73H0AM8N2J M.CHIP INDUCTOR 8.2nH 3820HGK,3820HKL107 LB73H0AV-003 CHIP FERRITEL108 L41-2785-53 CHIP INDUCTORL109 LB73H0AV-003 CHIP FERRITEL110 L41-2785-53 CHIP INDUCTORL111 L41-2785-53 CHIP INDUCTORL112 L41-2785-53 CHIP INDUCTORL113 L41-2785-53 CHIP INDUCTORL115 L41-2785-53 CHIP INDUCTORL116 L41-2785-53 CHIP INDUCTORL117 LB73H0AY-004 CHIP FERRITE

L118 LK73H0AM15NJ M.CHIP INDUCTOR 15nH3820E,3820GE,3820HGK2,3820HK2

L118 LK73H0AM10NJ M.CHIP INDUCTOR 10nH 3820HGK,3820HKL119 LB73H0AY-004 CHIP FERRITE

L120 LK73H0BX3N0B M.CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L120 LK73H0AM2N7S M.CHIP INDUCTOR 2.7nH 3820HGK,3820HK

L121 LK73H0BX39NG M.CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L121 LK73H0AM33NJ M.CHIP INDUCTOR 33nH 3820HGK,3820HK

L122 LK73H0BX1N8B M.CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L122 LK73H0AM1N8S M.CHIP INDUCTOR 1.8nH 3820HGK,3820HK

L123 LK73H0BX39NG M.CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L123 LK73H0AM33NJ M.CHIP INDUCTOR 33nH 3820HGK,3820HK

L124 LK73H0BX3N0B M.CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L124 LK73H0AM2N7S M.CHIP INDUCTOR 2.7nH 3820HGK,3820HKL207 LB73H0AY-004 CHIP FERRITEL208 LB73H0AY-004 CHIP FERRITEL209 LK73H0AM15NJ M.CHIP INDUCTOR 15nHL210 LK73H0AMR12J M.CHIP INDUCTOR 0.12uHL211 LK73H0AM15NJ M.CHIP INDUCTOR 15nHL212 LK73H0AM15NJ M.CHIP INDUCTOR 15nHL213 LK73H0AM8N2J M.CHIP INDUCTOR 8.2nH

L214 L41-1575-53 CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L214 L41-1275-53 CHIP INDUCTOR 3820HGK,3820HKL215 LB73F0AW-002 CHIP FERRITE

L216 L41-1575-53 CHIP INDUCTOR3820E,3820GE,3820HGK2,3820HK2

L216 L41-1275-53 CHIP INDUCTOR 3820HGK,3820HKL217 LB73H0AV-003 CHIP FERRITEL218 LB73G0BA-004 CHIP FERRITE

Symbol No. Part No. Part Name Description Local

L219 LB73Z0DF-001 CHIP FERRITEL220 LB73Z0DF-001 CHIP FERRITEL221 LB73Z0DF-001 CHIP FERRITEL222 L41-4775-53 CHIP INDUCTOR

L223 LR77Z0AA68NJ CHIP INDUCTOR 68nH3820E,3820GE,3820HGK2,3820HK2

L223 LR77Z0AAR12J CHIP INDUCTOR 3820HGK,3820HKL224 LR79G0GK82NG CHIP INDUCTORL225 LB73H0AY-004 CHIP FERRITEL226 LB73H0AV-003 CHIP FERRITEL227 LR79G0GK3N9B CHIP INDUCTORL302 LK73H0AM33NJ M.CHIP INDUCTOR 33nHL303 LR79G0CQ18NG CHIP INDUCTORL304 LR79G0CQ12NG CHIP INDUCTORL305 LR79G0CQ22NG CHIP INDUCTOR 22nHL306 LR79G0CQ3N9C CHIP INDUCTORL307 LR79G0CQ39NG CHIP INDUCTORL308 LR79G0CQ39NG CHIP INDUCTORL309 LR79G0CQ39NG CHIP INDUCTORL310 LR79G0CQ22NG CHIP INDUCTOR 22nHL311 LR79G0CQR22G CHIP INDUCTORL312 LK73H0AM33NJ M.CHIP INDUCTOR 33nHL313 LR79G0CQ18NG CHIP INDUCTORL314 LK73H0AMR27J M.CHIP INDUCTORL401 LB73G0AK-001 CHIP FERRITEL402 LB73H0AV-003 CHIP FERRITEL403 LB73G0AK-001 CHIP FERRITEL404 LR77Z0AE4R7J CHIP INDUCTOR 4.7uHL405 LB73G0AM-004 CHIP FERRITEL406 L92-1101-05 CHIP FERRITEL407 L92-1101-05 CHIP FERRITEL408 L92-1101-05 CHIP FERRITEL409 L92-1101-05 CHIP FERRITEL410 LB73G0AK-001 CHIP FERRITEL411 LB73G0AK-001 CHIP FERRITEL412 LB73G0AK-001 CHIP FERRITEL413 LB73G0AK-001 CHIP FERRITEL414 LB73H0AV-002 CHIP FERRITEL415 L79-1984-05 FILTERL416 L79-1984-05 FILTERL417 LB73H0AY-002 CHIP FERRITEL418 LB73H0AY-002 CHIP FERRITEL419 L79-1984-05 FILTERL420 L92-1101-05 CHIP FERRITEL601 LB73H0AV-003 CHIP FERRITEL602 LB73H0AV-003 CHIP FERRITEL603 LB73H0AV-003 CHIP FERRITE

CN1 EC720AA-0560A FFC FPC CONNECN2 E40-6862-05 F.C.CONNECTORCN3 J19-5386-05 HOLDERCP301 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP302 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP303 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP401 RK74HB1J103J NET RESISTOR 10kΩ 1/16W JCP402 RK74HB1J222J NET RESISTOR 2.2kΩ 1/16W JCP403 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP404 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP405 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP406 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP407 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP408 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP409 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP410 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP411 RK74HB1J101J NET RESISTOR 100Ω 1/16W JCP412 RK74HB1J470J NET RESISTOR 47Ω 1/16W JCP413 RK74HB1J470J NET RESISTOR 47Ω 1/16W JCP414 RK74HB1J470J NET RESISTOR 47Ω 1/16W JCP601 RK74HB1J472J NET RESISTOR 4.7kΩ 1/16W JCP602 RK74HB1J472J NET RESISTOR 4.7kΩ 1/16W JCP604 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP605 RK74HB1J101J NET RESISTOR 100Ω 1/16W JE11 F1B-0085-00 SHIELDING CASEE101 F1B-0085-00 SHIELDING CASEF1 F53-0286-05 FUSEF2 F53-0286-05 FUSEF3 F53-0286-05 FUSEF4 FZA10BS-5R0 FUSE (CC)

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-17

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SUB UNITXC3-050M-00

Block No. [0][3]

F5 FZA10BS-5R0 FUSE (CC)F6 F53-0286-05 FUSE

IC201 RA60H3847-501 MOS IC3820E,3820GE,3820HGK2,3820HK2

IC201 RA60H4452-501 MOS IC 3820HGK,3820HKIC601 LA4631VC-XE ANALOG ICJ1 E58-0567-05 SUB SOCKET DJ2 E1B-0001-00 3.5D PHONE JACKTH201 NCU15WF104F6S N THERMISTORTH202 NCU15WF104F6S N THERMISTORTH203 NCU15WF104F6S N THERMISTORTH401 NCU15WF104F6S N THERMISTORX401 L7H-0076-00 TCXOX402 L77-1802-05 QUARTZ CRYSTAL

Symbol No. Part No. Part Name Description Local

IC1 MM3404A50URE ICIC3 TC7WH126FK ICIC4 TC7WT125FUF ICIC5 BD11600NUX ICIC6 TC35894FG IC

Q1 SSM3K15AMFV FETQ2 SSM6N37FE FETQ3 LTC014EEBFS8 DIGI TRANSISTORQ4 LTC014EEBFS8 DIGI TRANSISTORQ6 LTC014EEBFS8 DIGI TRANSISTORQ8 SSM6N37FE FET

D1 SPC10501A01 VARISTORD2 SPC10501A01 VARISTORD3 B30-2365-05 LEDD4 B30-2365-05 LEDD5 B30-2365-05 LEDD6 B30-2365-05 LEDD9 NSSW206C-T865 LEDD10 NSSW206C-T865 LEDD11 B30-2365-05 LEDD12 B30-2365-05 LEDD15 NSSW206C-T865 LEDD16 NSSW206C-T865 LEDD17 B30-2365-05 LEDD18 B30-2365-05 LEDD20 B30-2364-05 LEDD21 EDZV6.2B ZENER DIODED22 RB521CM-30 DIODED24 EDZV6.8B ZENER DIODED26 RSB12Z ZENER DIODED27 MINISMDC020F VARISTORD28 EMZ6.8N ZENER DIODED30 EDZV6.8B ZENER DIODED32 RSB12Z ZENER DIODED33 B30-2365-05 LEDD34 B30-2365-05 LED

C1 CK73HBB1H102K C CAPACITOR 1000pF 50V KC2 CC73HCH1H101J C CAPACITOR 100pF 50V JC3 CK73HB1E104K C CAPACITOR 0.10uF 25V KC6 CK73FXR1E475K C CAPACITOR 4.7uF 25V KC7 CC73HCH1H101J C CAPACITOR 100pF 50V JC8 CC73HCH1H101J C CAPACITOR 100pF 50V JC9 CC73HCH1H101J C CAPACITOR 100pF 50V JC11 CC73HCH1H101J C CAPACITOR 100pF 50V JC12 CC73HCH1H101J C CAPACITOR 100pF 50V JC13 CK73HB1E104K C CAPACITOR 0.10uF 25V KC14 CK73HB1E104K C CAPACITOR 0.10uF 25V KC15 CK73HB1E104K C CAPACITOR 0.10uF 25V KC16 CK73HBB1H102K C CAPACITOR 1000pF 50V K

Symbol No. Part No. Part Name Description Local

C17 CC73HCH1H101J C CAPACITOR 100pF 50V JC20 CK73HBB1H102K C CAPACITOR 1000pF 50V KC21 CK73HBB1H102K C CAPACITOR 1000pF 50V KC22 CK73HBB1H102K C CAPACITOR 1000pF 50V KC24 CC73HCH1H101J C CAPACITOR 100pF 50V JC25 CC73HCH1H101J C CAPACITOR 100pF 50V JC26 CC73HCH1H101J C CAPACITOR 100pF 50V JC28 CK73GB1E105K C CAPACITOR 1uF 25V KC30 CK73GB1E105K C CAPACITOR 1uF 25V KC33 CK73HB1E104K C CAPACITOR 0.10uF 25V KC34 CK73HB1E104K C CAPACITOR 0.10uF 25V KC35 CK73HB1E104K C CAPACITOR 0.10uF 25V KC36 CK73GB1E105K C CAPACITOR 1uF 25V KC37 CK73HB1E104K C CAPACITOR 0.10uF 25V KC38 CK73HBB1E103K C CAPACITOR 0.01uF 25V KC39 CC73HCH1H101J C CAPACITOR 100pF 50V JC40 CK73HBB1H102K C CAPACITOR 1000pF 50V KC41 CK73HB1E104K C CAPACITOR 0.10uF 25V KC45 CK73HBB1H102K C CAPACITOR 1000pF 50V KC46 CK73HBB1H102K C CAPACITOR 1000pF 50V KC47 CK73HBB1H102K C CAPACITOR 1000pF 50V KC49 CC73HCH1H101J C CAPACITOR 100pF 50V JC50 CC73HCH1H101J C CAPACITOR 100pF 50V JC51 CC73HCH1H101J C CAPACITOR 100pF 50V JC52 CC73HCH1H101J C CAPACITOR 100pF 50V JC53 CC73HCH1H101J C CAPACITOR 100pF 50V JC54 CC73HCH1H101J C CAPACITOR 100pF 50V JC55 CC73HCH1H101J C CAPACITOR 100pF 50V JC56 CC73HCH1H101J C CAPACITOR 100pF 50V JC57 CC73HCH1H101J C CAPACITOR 100pF 50V JC58 CC73HCH1H101J C CAPACITOR 100pF 50V JC59 CK73HBB1H102K C CAPACITOR 1000pF 50V KC61 CK73HB1E104K C CAPACITOR 0.10uF 25V KC62 CK73HB1E104K C CAPACITOR 0.10uF 25V KC64 CK73GB1E105K C CAPACITOR 1uF 25V KC65 CK73GB1E105K C CAPACITOR 1uF 25V KC66 CK73GB1E105K C CAPACITOR 1uF 25V KC67 CC73HCH1H101J C CAPACITOR 100pF 50V JC68 CK73GB1E105K C CAPACITOR 1uF 25V KC70 CC73HCH1H470J C CAPACITOR 47pF 50V JC71 CC73HCH1H470J C CAPACITOR 47pF 50V JC72 CC73HCH1H470J C CAPACITOR 47pF 50V JC73 CC73HCH1H470J C CAPACITOR 47pF 50V J

R1 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR2 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR4 RK73GB2A000J MG RESISTOR 0Ω 1/10W JR5 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR6 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR7 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR8 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR9 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR10 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR11 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR12 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR13 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR14 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR15 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR16 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR17 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR18 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR19 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR20 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR21 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR22 RK73GB2A181J MG RESISTOR 180Ω 1/10W JR23 RK73GB2A181J MG RESISTOR 180Ω 1/10W JR24 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR25 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR27 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR28 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR29 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR30 RK73GB2A181J MG RESISTOR 180Ω 1/10W JR31 RK73GB2A181J MG RESISTOR 180Ω 1/10W JR32 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR33 RK73HB1J331J MG RESISTOR 330Ω 1/16W JR36 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR37 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR38 RK73HB1J681J MG RESISTOR 680Ω 1/16W J

Symbol No. Part No. Part Name Description Local

3-18(No.RA054<Rev.001>)

Page 207: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

MODULE UNITXC2-0040-10 (NX-3720GE,NX-3720HGK,NX-3820GE,NX-3820HGK,NX-3820HGK2)*Note : This part cannot be replaced.Therefore, this part is not supplied as a service part.

Block No. [0][4]

R39 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR40 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR41 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR42 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR43 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR44 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR45 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR46 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR47 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR48 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR49 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR50 RK73HB1J151J MG RESISTOR 150Ω 1/16W JR51 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR56 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR57 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR58 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR60 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR61 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR62 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR63 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR64 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR66 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR67 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR68 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR69 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR70 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR71 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR72 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR73 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR74 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR75 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR77 RK73GB2A680J MG RESISTOR 68Ω 1/10W JR79 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR80 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR81 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR82 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR83 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR84 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR85 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR86 RK73HB1J222J MG RESISTOR 2.2kΩ 1/16W JR87 RK73GB2A000J MG RESISTOR 0Ω 1/10W J

L1 LB73G0AM-004 CHIP FERRITEL2 LB73G0AM-004 CHIP FERRITEL3 LB73H0AV-003 CHIP FERRITEL6 LB73H0AV-003 CHIP FERRITEL8 LB73H0AV-003 CHIP FERRITEL9 LB73H0AV-003 CHIP FERRITEL10 LB73H0AV-003 CHIP FERRITEL11 LB73G0AM-004 CHIP FERRITEL12 LB73G0AM-004 CHIP FERRITEL13 LB73H0AV-003 CHIP FERRITEL14 LB73G0AM-004 CHIP FERRITE

CN3 EC720AK-0512A FFC FPC CONNECN5 E41-2671-05 PIN ASSYCN6 EC720AA-0523A FFC FPC CONNECN7 EC710AM-0560A FFC FPC CONNEJ1 E58-0535-05 MODULAR JACK

Symbol No. Part No. Part Name Description Local

IC1 74AVC4TD245GU ICIC2 BU18TD2WNVX ICIC3 XC6209B332D-G IC

Symbol No. Part No. Part Name Description Local

IC4 NJM2878F4-33 ICIC5 ------------ IC *NoteIC6 74AVC4TD245GU ICIC7 74AVC4TD245GU IC

Q1 EM6M2 FET

D17 RN262CS DIODED18 RN262CS DIODE

C1 CK73HB1A474K C CAPACITOR 0.47uF 10V KC2 CK73HB1A474K C CAPACITOR 0.47uF 10V KC3 CK73HB1E104K C CAPACITOR 0.10uF 25V KC4 CK73HB1E104K C CAPACITOR 0.10uF 25V KC5 CK73HB1A105K C CAPACITOR 1uF 10V KC6 CK73HB1A474K C CAPACITOR 0.47uF 10V KC7 CK73HB1A474K C CAPACITOR 0.47uF 10V KC8 CC73HCH1H220J C CAPACITOR 22pF 50V JC9 CC73HCH1H100B C CAPACITOR 10pF 50V BC10 CK73HB1A105K C CAPACITOR 1uF 10V KC11 CK73HB1E104K C CAPACITOR 0.10uF 25V KC12 CK73HB1E104K C CAPACITOR 0.10uF 25V KC13 CK73HB1E104K C CAPACITOR 0.10uF 25V KC14 CK73HB1E104K C CAPACITOR 0.10uF 25V KC15 CK73HB1A105K C CAPACITOR 1uF 10V KC16 CK73HB1E104K C CAPACITOR 0.10uF 25V KC17 CK73HB1E104K C CAPACITOR 0.10uF 25V KC18 CC73HCH1H180J C CAPACITOR 18pF 50V JC19 CC73HCH1H180J C CAPACITOR 18pF 50V JC20 CK73HB1A105K C CAPACITOR 1uF 10V KC21 CK73HB1A105K C CAPACITOR 1uF 10V KC22 CK73HB1E104K C CAPACITOR 0.10uF 25V KC23 CK73HBB1H102K C CAPACITOR 1000pF 50V KC24 CK73HB1E104K C CAPACITOR 0.10uF 25V KC25 CK73HBB1H102K C CAPACITOR 1000pF 50V KC26 CK73HBB1H102K C CAPACITOR 1000pF 50V KC27 CK73HBB1H102K C CAPACITOR 1000pF 50V KC28 CK73HB1E104K C CAPACITOR 0.10uF 25V KC29 CK73HB1E104K C CAPACITOR 0.10uF 25V KC30 CK73HB1E104K C CAPACITOR 0.10uF 25V KC31 CK73HB1A105K C CAPACITOR 1uF 10V KC32 CK73HB1E104K C CAPACITOR 0.10uF 25V KC33 CK73HB1E104K C CAPACITOR 0.10uF 25V KC34 CK73HB1E104K C CAPACITOR 0.10uF 25V KC35 CK73HB1E104K C CAPACITOR 0.10uF 25V KC36 CC73HCH1H220J C CAPACITOR 22pF 50V JC37 CC73HCH1H220J C CAPACITOR 22pF 50V JC38 CC73HCH1H2R5B C CAPACITOR 2.5pF 50V BC39 CK73HB1E104K C CAPACITOR 0.10uF 25V KC40 CC73HCH1H180J C CAPACITOR 18pF 50V JC44 CK73HB1E104K C CAPACITOR 0.10uF 25V KC45 CK73HB1E104K C CAPACITOR 0.10uF 25V KC46 CK73HB1E104K C CAPACITOR 0.10uF 25V KC47 CK73HB1E104K C CAPACITOR 0.10uF 25V KC48 CK73HB1E104K C CAPACITOR 0.10uF 25V KC49 CK73HB1E104K C CAPACITOR 0.10uF 25V KC50 CC73HCH1H470J C CAPACITOR 47pF 50V JC68 CC73HCH1H010B C CAPACITOR 1pF 50V B

R1 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR2 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR3 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR4 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR7 RK73HB1J101J MG RESISTOR 100Ω 1/16W JR8 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR9 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR10 RK73HB1J104J MG RESISTOR 100kΩ 1/16W JR11 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR12 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR13 RK73HB1J473J MG RESISTOR 47kΩ 1/16W JR14 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR15 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR16 RK73EB2E100J MG RESISTOR 10Ω 1/4W JR18 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR19 RK73HB1J102J MG RESISTOR 1kΩ 1/16W JR21 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR22 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR23 RK73HB1J000J MG RESISTOR 0Ω 1/16W J

Symbol No. Part No. Part Name Description Local

(No.RA054<Rev.001>)3-19

Page 208: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

R24 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR25 RK73HB1J103J MG RESISTOR 10kΩ 1/16W JR26 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR27 RK73HB1J000J MG RESISTOR 0Ω 1/16W JR29 RK73HB1J000J MG RESISTOR 0Ω 1/16W J

L1 LB73H0AV-002 CHIP FERRITEL2 LB73G0AK-001 CHIP FERRITEL3 LB73G0BJ-002 CHIP FERRITEL4 L92-0487-05 CHIP FERRITEL5 L92-0487-05 CHIP FERRITEL6 LK73H0AG27NJ M.CHIP INDUCTOR 27nHL7 LK73H0AM10NJ M.CHIP INDUCTOR 10nHL8 L92-0487-05 CHIP FERRITEL9 L7K-0059-00 FILTERL11 L79-1987-05 FILTERL13 L92-0487-05 CHIP FERRITEL14 L92-0487-05 CHIP FERRITEL15 L40-2263-71 CHIP INDUCTOR

CN1 E40-6879-05 F.C.CONNECTORCN5 E0E-0012-00 RF C.RECEPTACLECP1 RK74HB1J100J NET RESISTOR 10Ω 1/16W JCP2 RK74HB1J100J NET RESISTOR 10Ω 1/16W JE1 F10-3226-05 SHIELDING CASEX1 L77-3123-05 TCXOX2 L77-3121-05 QUARTZ CRYSTAL

Symbol No. Part No. Part Name Description Local

3-20(No.RA054<Rev.001>)

Page 209: SERVICE MANUAL - Repeater Buildermanuals.repeater-builder.com/Kenwood/nx/NX-3720-3820/NX-3720-3… · Operating Temperature Range -22°F to +140°F (-30°C to +60°C) Frequency Stability

Packing materials and accessories parts list

Packing and accessoriesBlock No. [M][2][M][M]

Symbol No. Part No. Part Name Description Local

1 H5A-0946-00 ITEM CARTON 2 H1C-0152-00 PACKING FIXTURE (x2) 3 ------------ PROTECTION BAG 4 J19-1584-15 HOLDER ACC 3720HGK,3720HK,3820HGK,3820HGK2,3820HK,3820HK2 5 J29-0726-03 BRACKET ACC 6 T91-0639-85 MICROPHONE KMC-35 3720HGK,3720HK,3820HGK,3820HGK2,3820HK,3820HK2 7 B5A-1680-00 INST.MANUAL 9 LANGUAGES 3720E,3720GE,3820E,3820GE 7 B5A-1562-00 INST.MANUAL 3 LANGUAGES 3720HGK,3720HK,3820HGK,3820HGK2,3820HK,3820HK2 8 ------------ PAMPHLET DOC 3720E,3720GE,3820E,3820GE 9 E30-7523-65 DC CORD ASSY ACC BLADE 10 N99-2039-05 SCREW SET ACC 11 FZB10AU-150 BLADE FUSE 15A BLADE(ACC)(x2)

Block No.M2MM

1

2

2

3

4

5

6 7

9

10

11

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JKS

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