48
Parts No. 053-042 lflIJeIDa MX-5050MKIII-2 PROFESSIONAL RECORDER OPERATION MANUAL Richard L. Hess Audio Tape Restoration 1-877- TAPE-FIX (Toll Free U.S. G Canada) 14B45-6 Yonge Street (905) 713-6733 (V) Suite 124 (905) 751-1984 (F) Aurora. ON L4G 6HB http ://www.richardhess . com/tape/ CANADA [email protected] Edition No.3 Printed: Feb. 1986

Otari MX-505MKIII-2 Professional Recorder

  • Upload
    votram

  • View
    245

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Otari MX-505MKIII-2 Professional Recorder

Parts No. 053-042

lflIJeIDa

MX-5050MKIII-2 PROFESSIONAL RECORDER

OPERATION MANUAL

Richard L. Hess

Audio Tape Restoration

1-877-TAPE-FIX (Toll Free U.S. G Canada)

14B45-6 Yonge Street (905) 713-6733 (V) Suite 124 (905) 751-1984 (F) Aurora. ON L4G 6HB http ://www.richardhess.com/tape/ CANADA [email protected]

Edition No.3 Printed: Feb. 1986

Page 2: Otari MX-505MKIII-2 Professional Recorder

CAUTION

To prevent fire or shock hazard:

Do not expose this appliance to rain or moisture.

Do not remove cover.

No user-serviceable parts inside.

Refer servicing to qualified service personnel.

PLEASE READ THROUGH SAFETY INSTRUCTIONS

ON TH E NEXT PAGE.

Page 3: Otari MX-505MKIII-2 Professional Recorder

SAFETY INSTRUCTIONS

1. Read Instructions - All the safety and operating instruc­tions should be read before the appliance is operated.

2. Retain Instructions - The safety and operating instructions should be retained for future reference.

3. Heed Warnings - All warnings on the appliance and in the operating instructions should be adhered to.

4. Follow Instructions - All instructions should be followed.

5. Water and Moisture - The appliance should not be used near water - for example, near a bathtub, washbasin, kitchen sink, laundrytub, in a wet basement, or near a swimming pool, etc.

6. Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manufacturer.

7. Ventilation The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation operatings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings.

8. Heat - The appliance should be situated away from near sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.

9. Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.

10. Grounding or Polarization - Precautions should be taken so that the grounding or polarization means of an appliance are not defeated.

11. Power-Cord Protection - power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular atten­tion to cords at plugs. Convenience receptacles, and the point where they exit from the appliance.

12. Cleaning - The appliance should be cleaned only as recom­mended by the manufacturer.

13. Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.

14. Object and Liquid Entry - Care should be taken so that

iii

Page 4: Otari MX-505MKIII-2 Professional Recorder

WARNING

This equipment generates, uses, and can radiate

radio frequency energy and if not installed and

used in accordance with the instructions manual,

may cause interference to ratio communications.

It has been t ested and found to comply with the

limits for a Cl ass A com puting devi ce pursuant to

Subpart J of Part 15 of FCC Ru les, which are de­

sig ned to provide reasonable pro tection against

such interference when oper ated in a commercial

environment. Operati o n of this equipment in a re­

sidential area is likely to ca use int erference in

which case t he user at thi s own expense will be

required to ta ke whatever measures may be re­

quired t o co r rect the interference.

v

Page 5: Otari MX-505MKIII-2 Professional Recorder

COMMUNICATION WITH OTARI

FOR SERVICE INFORMATION AND PARTS

The OTARI PRODUCTS are manufactured under strict quality control and each unit is carefully tested and inspected prior to shipment from our factory.

If, however, some adjustments or technical support become neces­sary, replacement parts are required, or technical questions arise, please contact your nearest Otari dealer or write to:

OTARI ELECTRIC CO., LTD. OTARI CORPORATION

4-29-18, Minami Ogikubo, 2 Davis Drive, Belmont, Suginami-ku, Tokyo, 167, Japan California 94002, U.S.A. Phone: (03) 333-9631 Phone: (415) 592-8311 Telex: J26604 OTRDENKI Telex: 25 9103764890 Fax (03) 331-5802 Fax (415) 591-3377

OTARI ELECTRIC DEUTSCHLAND GmbH. OTARI SINGAPORE PTE., LTD.

Gielenstrasse 9, 4040 Neuss 1 625 Aljunied Road #07-05 F.R. Germany Aljunied Industrial Complex, Phone: 02101-274011 Singapore 1438 Telex: 41 8517691 OTEL D Phone: 743-7711 Fax (02101) 222478 Telex: 87 36935 RS36935 OTARI

Fax (743) 6430

OTARI ELECTRIC (UK) LTD.

22 Church Street Slough Berkshire SLl lPT United Kingdom Phone: SLOUGH (0753) 822381 Telex: 849453 OTARI G Fax ( 0 7 5 3 ) 8 2 37 0 7

Another part of Otari's continuous technical support program for our products, is the continuous revision of manuals as the equip­ment is improved or modified.

In order for you to receive our information and service applicable to your requirements, and for the technical support to function properly, please include the following information, most of which can be obtained from the name plate on the equipment in all correspondences.

1. Model Number 2. Serial Number 3. Date of purchase 4. Name and address of dealer f~om whom machine was

purchased 5. Power requirements (voltage and frequency) of the

machine 6. Manual number to which you are referring

vii

Page 6: Otari MX-505MKIII-2 Professional Recorder

TABLE OF CONTENTS

PAGE

1-1 1-1 1-3 1-3 1-4 1-4 1-5 1-5

2-1 2-1 2-1 2-2 2-3 2-4 2-8 2-8

3-1 3-9 3-9 3-10 3-11 3-12 3-13 3-14 3-14

4-1

5-1 5-1 5-2 5-3 5-4 5-5 5-5 5-7 5-9

SECTION

I 1.1 1.1.1 1.1. 2 1.1.3 1.2 1.3 1.4 1.5

II 2.1 2.2 2.3 2.4 2.5 2.6 2.6.1 2.6.2

III 3.1 3.2 3.2.1 3.2.2 3.2. 3 3.2.4 3.2.5 3.2.6 3.2.7

IV 4.1

V

5.1 5.1.1 5.1. 2 5.1. 3 5.2 5.3 5.4 5.5 5.6

VI

VII

VIII

TOPIC

GENERAL INFORMATION System Description Tape Transport Record/Reproduce Electronics Head Assemblies Standard Accessories Optional Accessories Service and Replacement Parts Specifications

INSTALLATION Unpacking and Inspection Cable Connection Location and Environment Dimensions Standard Switch Position on Shipment Power and Signal Connections AC Power Connections Signal Connections

OPERATION Controls and Indicators Operating Informatin Use of the Reel Hold Down Knobs Pre-operating Procedure Reproduction Normal Recording Recording with Selective Production Fast Winding Editing and Splicing Tape

GENERAL INFORMATION OF MAINTENANCE Test and Maintenance Equipment Requirement

ROUTINE MAINTENANCE INFORMATION Routine Maintenance Cleaning Demagnetizing Lubrication Tape Replacement Equalizer Change

AND CONVERSION

Line Voltage Conversion Fuse Replacement Speed Conversion

P.C.B. ASSEfffiLIES AND PARTS LISTS

EXPLODED VIEW DRAWINGS AND PARTS LISTS

PATTERN LAYOUT

ix

Page 7: Otari MX-505MKIII-2 Professional Recorder

SECTION I. GENERAL INFOID1ATION

The MX-5050 MK 1lI-2 Recorder is a professional quality two-speed audio tape recorder/reproducer, designed for optimum performance and long life. It a ccommodates a 1/4 inch tape, 7-1/ 2 ips (19.05 cm/sec) and 15 ips (38.1 cm/sec) tape speeds.

1.1 SYSTEM DESCRIPTION

Among the many profes s ional features of the MX50S0MKTII -2 are: selective reproduc tion, motion sen s ing, an edit control that permits spilling, an adjustable cueing control for audible moni ­toring in the fast - forward and rewind modes, a built-in two frequency low distortion test and cue-tone oscillator, a com­puterized elapsed time indicator with a digital LED display, front adjustable reco r d bias, equa lization, and level controls, active balanced input and output ci rcuits, a reference fl ux level indicator on the front amplifier panel, a standard reference level output switch , separate line and microphone input l evel controls for eac h channel, s witches for recording levels , equal­ization, microphone, and output level attenuato r s, play - b ack equalization pots f or each s p e e d , a memory s t o p b utton f o r auto­matically sear c hing t h e zero t ape time l ocation with F. FWD or RWD mode, ceramic tape gui d e s , big head housing , l ower t r ansport noise, and improved s pecif i cation s fo r distor t i on, erase effect, and signal and noi s e ratio.

1.1.1 TAPE TRANSPORT

All components o f t he t ape tra n sport sys t e m are mo unte d on a rigid aluminum f rame for s tabili ty. The t r an s p o r t design i n ­corporates two 6-pole induc tion motors for t he r eels and a 3­speed DC servo motor (Direct d r ive) for the c apstan .

Speed selec tion is made by a front panel push-button switch which also switches the e q ua li zer.

The transport a ccommodates tape reel s of 10-1/2 inches, 7 inche s , and 5 inches in diameter with NAB or EIA hub configurations. A solenoid-actuated tape lifter lifts the tape away from the heads in the f a s t f orwa rd and rewind modes, in addition to the stop mode, to i ncrease head and tape life.

In addition to the editing controls, a tape-splicing bloc k (Fig. 3-3) mounted on the head cover holds the tape f or e ase of editing.

Momentary contact p us h -button switches on the transpo rt are used to select operational mo des : reco rd, play, stop, rewind , and fast forward. The se mo des may be contr olled from a r emote loca­tion by means of an optional remote control unit (page 1 - 5 ).

1 -1

Page 8: Otari MX-505MKIII-2 Professional Recorder

1.1.2 RECORD/REPRODUCE ELECTRONICS

FEATURES

(1) The RECORD/REPRODUCE amplifier unit is connected to the transport unit only by the connectors and therefore can be easily removed for ease ln servicing.

(2) This machine contains a SEL. REP. function for overdubbing: for example, SOUND WITH SOUND, SOUND ON SOUND, carried out by the PUNCH-IN and PUNCH-OUT functions of the transport control.

(3) This machine provides both NAB and IEC equalizers, switchable on the rear panel. However, when the equalizer position is changed, fine tuning the record and reproduce equalizer adjustment controller is necessary.

(4) In order to give optimum performance for different types of recording tapes, record bias, level, and equalization con­trols on the front panel can be adjusted to meet any requirements.

(5) To improve the signal to noise ratio and increase the head room, the record/reproduce electronics have been designed with a high-fidelity amplifier.

1.1.3 HEAD ASSEMBLIES

As viewed from the front of the recorder, the configuration of the head assembly of model MX-5050 MKIIT-2 is shown in Table 1-1.

Table 1-1 Head Assembly Configuration

Head Structure Record Hl H2 H3 H4 Head

Erase Playback Record Playback

2T, 2CH 4T, 2CH 2T, 2CH 2T, 2CH 2T, 2CH Stereo

1-3

Page 9: Otari MX-505MKIII-2 Professional Recorder

OPTIONAL ACCESSORIES

1. Remote Control Unit CB - 1 02

2. Auto Locator ZA-54C (CB-116)

3. Cleaning Kit ZA-51B

4. Balanced Input Transformer Ass'y ZA-53T

5. Balanced Output Transformer Ass'y ZA-53S

6 . Hold Down Knob (for EIA hub) ZA-52Y

1.4 SERVICE AND REPLACEMENT PARTS

For service and replacement parts, or for technical support, please contact your nearest service center, OTARI dealer, or write directly to OTARI. (See page iii for complete addresses.)

1.5 SPECIFICATIONS

The specifications of the MX-5050 MKIIT-2 are as listed in Table 1-2.

NOTE: Specifications are based on tape speeds of 7-1/2 and 15 ips. Specifications, although obtainable when serviced by qualified service personnel, are not guaranteed wh en using lower tape speeds.

Table 1 - 2 Specifications of the MX - 5 050 MKIIT - 2

Tape width and Tracks

Tape Speeds

Reel Sizes

Heads

1/4 inch (6.3 mm) tape: 2 tracks (0.079 in. or 2.0 mm

track width)

7-1 / 2 and 1 5 ips (19 a nd 38 cm/sec) or 3-3/4 and 7- 1/2 ips ( 9 .5 and 19 cm/sec)

Max imum deviation: ± 0.2 % me a sured with 1.5 mil (0.0 3 8 mm) tape .

7 inch or 10-1/ 2 inch pl as t ic or metal, EIA or NAB.

Half - track configuration . Four head stacks:

2T erase, 4T reproduce , 2T record, 2T reproduce .

1-5

Page 10: Otari MX-505MKIII-2 Professional Recorder

Outputs: Line

Headphone

Equalization

Frequency Response

Signal to Noise Ratio

Level: +4 dBm or -10 dBm, rear panel switch selectable.

Active balanced (Floating type), Source impedance: 5 ohms.

Load impedance: More than 600 ohms.

Maximum line output: +27 dBm with a 600 ohm load.

Level: -24 dBm with an 8 ohm load.

Load impedance: 8 ohms or greater.

NAB or lEC for 3-3/4, 7-1/2, and 15 ips. Switchable on the rear panel, but calibration is necessary.

15 ips 30 Hz to 20 kHz ± 2 dB

7-1/2 ips: 20 Hz to 18 kHz ± 2 dB

3-3/4 ips: 20 Hz to 10 kHz ± 2 dB

Specifications refer to a 1 kHz refer­ence when recorded on 3M 226.

Over-all measured at the level of 520 nWb/m.

NAB Equalization:

Tape Speed Weighted Unweighted

15 ips 66 dB 64 dB

7-1/2 ips 68 dB 68 dB

3-3/4 ips 66 dB 64 dB

lEC Equalization:

Tape Speed Weighted Unweighted

15 ips 67 dB 65 dB --

7-1/2 ips 66 dB 64 dB

3-3/4 ips 66 dB 64 dB

1-7

Page 11: Otari MX-505MKIII-2 Professional Recorder

NOTES: 1. Signal to noise ratio is measured with respect to a recorded level of 520 nWb/m to biased tape noise when using Scotch 226 magnetic tape. Unweighted: Using a 30 to 18 kHz RC filter to atten­

uate noise outside the audio spectrum. Weighted Using an NAB or ASA "A" weighting filter

and a 1 kHz reference.

2. Otari reserves the right to change specifications without notice and/or obligation.

1-9

Page 12: Otari MX-505MKIII-2 Professional Recorder

SECTION II. INSTALLATION

This section of the manual provides information on unpacking and inspection, location and environment, and power and signal connections.

2.1 UNPACKING AND INSPECTION

The MX-5050 MKIIT-2 system is shipped from the factory in a single cardboard packing case. Upon receipt, examine the case for any signs of damage. Unpack the equipment and inspect for any signs of damage. Use great care when unpacking the equipment and remov­ing packing materials to prevent damage to critical components such as the capstan, head assembly, and tension arms.

Referring to the lists in Secs. 1.2 and 1. 3 (as applicable), veri ­fy that all items have been received. Report any shortage or damage to the carrier and your local Otari dealer. Save the packing case for possible reshipment. Other packaging may cause damage during transportation and will void the warranty.

please refer to the illustration which is attached to flap of the packing box regarding the repacking method.

2.2 CABLE CONNECTION

Before installing the machine on the place you desire, you should connect the each cable to the proper connector on the amplifier unit as described below. (One end of each cable is already linked to the connector on the transport rear panel.)

Table 2-1 Cable Connection

Transport Unit Amplifier Unit

1 TO A~ connector TO DECK connector

2 RECORD/ ERASE HEAD connector RECORD/ERASE HEAD connector

3 REPRODUCE HEAD connector REPRODUCE HEAD connector

2 .3 LOCATION AND ENVIRONMENT

The area chosen for operation should be adequately ventilated and dust free. Since recording is by an electromagnetic process, it is possible that strong electromagnetic fields may affect the system adversely. Common sources of interference are fluctuating loads on nearby high-voltage lines, heavy duty transformers, and transmitting equipment.

2-1

Page 13: Otari MX-505MKIII-2 Professional Recorder

$ CH2 C lot, CH I C H 2 eH'

2.5 STANDARD SWITCH POSITION ON SHIPMENT

Either the NAB standard or the IEC standard of equalization, recording level, etc. may be used with the Otari MX-5050 MKllI-2. These units have been provided with a slide switch on the back panel which selects one of these two standards; to change stand­ards, merely slide the switch to the desired po s i tion.

~~c D~~~~~~ e ED CH2 CM' CM' C"' C"'REPRODUCE AECORD/ERASE C "'

HeAD HEAD TO ot:CK _ LlHE OUTP\lT_ _ Lipoi c INPuT _ _ MIC IHPUT _

® C. C. [J] CJil ® OUTPUT l£YEl EOOAU RtF n ux MIC ATTEHUArOR

_lOW HIGH_IEC HAB LOW MI D HIGH de~dBOFF_

I I I I 1 2 3 4

Fig. 2-2 (a) Standard Switch position on Shipment (NAB)

REPROouCE RECORD/ERASE HEAD HEAD TO DECK _ LINE OUTPur _ _ LINE INPUT __ MIC INPUT _

® [I] IJ ~ CI ® OUTPUT LEVEL EaUALI REF FLUX MIG ATTENUATOR

_LOW HIGH _ lEG NAB LOIN M .O H IGI-t e -20d90Ff_

I I I I 1 2 3 4

Fig. 2-2(b) Standard Switch Position on Shipment (IEC)

Table 2-2 Standard Switch position on Shipment

Switch Ref. No. Type

NAB IEC

OUTPUT LEVEL 1 HIGH HIGH

EQUALIZER 2 NAB IEC

RECORD LEVEL 3 M H

MIC. ATT 4 OFF OFF

2-3

Page 14: Otari MX-505MKIII-2 Professional Recorder

Index No. Name Function

1 REMOTE CONTROL Connector

Remote control connector for use with the optional remote control unit to control the record, play, stop, rewind, and fast forward modes.

2 LINE OUTPUT Connector

Male XLR-type connector. Active balanced output

(Floating Source impedance: 5 ohms

type) .

Load impedance: 600 ohms or

Level: greater.

+4 dBm or -10 dBm at 0 VU switchable by the OUTPUT LEVEL switch.

3 LINE INPUT Connector Female XLR-type connector. Active balanced input

(Foating type). Input impedance: 10 k ohms Minimum input: -15 dBm Maximum input before clipping:

+30 dBm Optional transformer balanced input. Input impedance: 10 k ohms Minimum input: -15 dBm Maximum input before clipping:

+30 dBm

4 MICrophone Connector

INPUT Female XLR-type connector. Active balanced input

(Floating type). Applicable microphone impedance:

150 - 10 k ohms Minimum input: -70 dBm or -50 dB8

switchable by means of the MIC ATTENUATOR switch.

5 GROUND Terminal Auxiliary ground connection for with equipment not connected to common AC ground.

use a

6 AC POWER Connector Three-contacts socket for connec­tion to AC power and ground.

2 - 5

Page 15: Otari MX-505MKIII-2 Professional Recorder

13 MICrophone ATTENUATOR Switch

14 REF FLUX Selector Switch

For more detail information of e x­ternal sync. operation. Please contact to OTARI dealer.

Used to adjust the sensitivity of the microphone amplifier in ac­cordance with the microphone's input level.

ATT Minimum Input (Sensitivity)

0 dB -70 dBm

-20dB - 50 dBm

OFF Shorted to the ground

This switch is used for setting the recording level: "High" , "Medium", and "Low". Located on the Amplifier front panel are 3 LED Re f Flux Se lec tor Lndicator displays which indicate the position of the switch .

(185 / 250/320)

position Flux Relative Level Test Tape Recording Tape

to be used

Low 185 nWb/m* 0 dB Ampex Operat­ing Level

Sc o tch 177 Ampex 641

Medium 250 nWb/m* +2. 6 dB MRL NAB Reference Flux

Scotch 2 06, 207, 226 , 250

Ampex 406, 407, 456

High 320 nWb/m** +3.8 dB BASF or MRL IEC Standard

IEC Equaliza­tion

* Short circuit fl ux

** Open circuit flux

15 EQUALIZER Selector The two-position EQUALIZER se lec­Switch tor switch is us ed to selec t

either LEC or NAB equal i zation.

2-7

Page 16: Otari MX-505MKIII-2 Professional Recorder

(2) Connect the cable shield to pin 1.

For unbalanced inputs using two-conductor shielded cable, wire the male XLR-connector as follows:

(1) Connect the signal leads of a cable to pin 3 (high) and pin 2 (low) of the connector.

(2) Connect the cable shield to pin 1 of the connector. (3) Connect a jumper from pin 1 to pin 2 of the connector.

For unbalanced inputs using single-conductor shielded cable, wire the male XLR-connector as follows:

(1) Connect the center conductor of the single-conductor shielded cable to pin 3 of the connector.

(2) Connect the cable shield to pins 1 and 2.

LOW HIGH LOW HIGH HIGH

BALANCED UNBALANCED UNBALANCED 2 CONDUCTOR 2 CONDUCTOR 1 CONDUCTOR

Fig. 2-3 Input/Output Assembly Connector Wiring

LINE OUTPUT CONNECTOR WIRING:

For balanced outputs, wire the female XLR-connector as follows:

(1)

(2)

Connect the signal leads of a two-conductor shielded cable to pin 3 (high) and pin 2 (low) of the connector. Connect the cable shield to pin 1.

For the

unbalanced outputs using two-conductor female XLR-connector as follows:

shielded cable, wire

(1) Connect the pin 2 (low)

signal of the

leads of the connector.

cable to pin 3 (high) and

2-9

Page 17: Otari MX-505MKIII-2 Professional Recorder

SECTION III. OPERATION

This section of the manual provides a controls and indicators and their use step procedures for the various modes

description of in the system, of operation.

a ll operating and step-by­

3.1 CONTROLS AND INDICATORS

Table 3-1 Tape Transport Controls and Indicators

19 18 15 16 17 18 22

\jf ®

®

'.'Q ®

..... .....",

20

2

21 4

3

..\ ®

dJI

I

a ® I,,,,,,,,,,,

23

24

25

14 13 11 12 10 9 8 7 6 5

17

Located inside the head cover is a switch for se­lection of either of the two playback head stacks. Flip the head cover "up" for easy access.

3-1

Page 18: Otari MX-505MKIII-2 Professional Recorder

11

8 (Continued)

9 RECORD Pushbutton Switch

10 Record Indicator (red)

Pressing the PLAY pushbutton during the fast forward or rewind modes stops the tape, then automatically starts the play mode.

Used in conjunction with the PLAY pushbutton switch and the RECORD channel selector. With the desired channel pushbutton sw~tches depress­ed, simultaneously pressing the PLAY and RECORD pushbuttons initiates the record mode and the red indicator illuminates. In the play mode, when the RECORD pushbutton is pushed, the unit enters the record mode. (This is called "Punch in".) In the record mode, when the PLAY push­button is pushed, the unit enters the reproduce mode. (This is called "Punch out".) Punch in and Punch out are used for overdubbing in con­junction with the sel. rep. function.

Used to indicate the record mode.

Transport record indicator

Amplifier record indicator

Transport Recording

dark dark non rec. mode x

blinks illuminated non rec. mode x ( ready)

remains illuminated

dark

illuminated

rec.

rec.

mode

mode

x

0

EDIT Pushbutton Switch

Blinking means that the amplifier is in the record-ready mode. Recording is being carried out when the record indicators of both the amplifier and the transport remain illuminated.

Used to initiate the edit mode to aid in cutting out unwanted tape.

3-3

Page 19: Otari MX-505MKIII-2 Professional Recorder

17 Reproduce Head Used to select the appropriate re­Selector Switch produce head stack to conform to the

type of tape to be reproduced.

18 NAB Hub Reel Hold Down Knobs

19 Supply Reel

20 Tension Arm

21 TACHO Pulse Generator Roller

22 Takeup Reel

23 Pinch Roller

24 Tension Arm with Safety Switch

25 Capstan Shaft

Used to attach EIA or NAB hub reels to the reel table. (Refer to Sec. 3.2.1.)

Used to supply tape for reproduction or recording.

Used to eliminate tape tension fluctuations.

Used to generate the pulses for the elapsed time indicator.

Used to take up tape.

Used to correctly transmit the ro ta­tion of the capstan to the tape.

Used to eliminate tape tension fluctuations. When tape is exhaust­ed, supply and take up reel rotation is automatically stopped by the safety switch attached to the ten­sion arm.

The shaft used to keep speed con­stant while in the reproduce and record modes.

Table 3-2 shows the loca tion and function of each control and indicator on the record/ reproduce electronics control panel.

3-5

Page 20: Otari MX-505MKIII-2 Professional Recorder

4 OUTPUT Le ve 1 Controls

5 SRL Switch and Indicator (red)

6 RECORD Selector Switch and Indicator (red)

Used to control the playback level of the corresponding channel. (Control is deactivated when the SRL switch is in the "SRL" position.)

In the "SRL (Standard Reference Level)" position, the red indicator is illuminated. The playback level is then determined by an internal preset potentiometer. The SRL can be selected by the Record level switch on the rear panel as follows:

RECORD LEVEL

Standard Reference Level

Flux Level Based on

L 185 nWb/m Ampex Operating level

M 2 50 nWb/m MRL reference flux ivity of 250 nWb

H 320 nWb/m BASF or MRL IEC reference level

In the normal position, the repro­duce level is controlled by the OUTPUT controls of the corresponding channel.

DO NOT TURN THIS SWITCH OFF UNLESS YOU TURN THE LINE OUTPUT LEVEL CON ­TROLS (INDEX NO. 4 IN THIS TABLE) DOWN TO THE MINIMUM LEVEL WHILE A SIGNAL IS BEING OUTPUT TO OTHER EQUIPMENT, TO PREVENT POSSIBLE DAMAGE.

Used to select channels for record­ing, and used in conjunction with the PLAY and RECORD pushbutton switches (Index Nos. 8 and 9 of Table 3-1). In the "out" position this switch prevents activation of the channel record mode.

3-7

Page 21: Otari MX-505MKIII-2 Professional Recorder

13 MONITOR SOURCE/ In the "out" (SOURCE) position, the TAPE Switch input signal is fed to the LINE OUT

connectors, the PHONES jack, the VU meters, and the peak indicators. In the "in" (Tape) position, the signal being reproduced is fed to the LINE OUT connectors, the PHONES jack, VU meters, and the peak indicators.

14 EQ Selection Located on the amplifier front panel Indicator are 2 LED EQ Selection Indicator

Displays which indicate the position of the NAB or IEC EQ switch which is located on the back of the unit.

15 Record Level Located on the front amplifier front Selection panel are 3 LED Record Level Se­Indicator lector Indicator Displays which

indicate the position of the Record Level Selector switch which is located on the back of the unit.

3.2 OPERATING INFORMATION

3.2.1 USE OF THE REEL HOLD DOWN KNOBS

NAB hub reel hold down knobs are used as follows:

When (1)

(2) (3)

an EIA hub (2-1/4 inch diameter hub) is used; Remove the NAB reel hold down knob by turning counterclockwise. Place the reel on the reel table. Place the reel hold down knob on the reel and ing the inner knob clockwise.

the

fix

inner

it by

knob

turn­

NOTE: ZA-52Y optional accessory (see page 1-4) is mendable to hold 2-1/4 inch diameter hub.

recom­

When an NAB hub (4-1/2 inch diameter hub) reel is used; (1) Place the reel hold down knob on the reel table and lock it

by turning the inner knob clockwise. (2) Place the NAB hub reel on to the reel table and fix it by

pulling and turning the outer knob.

3-9

Page 22: Otari MX-505MKIII-2 Professional Recorder

(6) Set the reproduce head selector switch (Index No. 17 ln Table 3-1) to the appropriate position as determined by the track format of the tape to be reproduced.

(7) If desired, connect a headset or monitor speaker/amplifier to the PHONE jack.

..\ cD,,,

I I

I I " I

I I

I I

Fig. 3-2 Tape Threading

3.2.3 REPRODUCTION

To reproduce, proceed as follows:

(1) Perform all steps in the pre-operating procedure.

(2) Set the channel RECORD selector switch(es) to the "out" position.

(3) Set the reproduce head selector switch to its appropriate position.

(4) Set the channel MONITOR selector switches to their TAPE "in" positions.

(5) Press the PLAY pushbutton to begin reproducing the pre­recorded tape.

3-11

Page 23: Otari MX-505MKIII-2 Professional Recorder

3.2.5 RECORDING WITH SELECTIVE REPRODUCTION

The selective reproduction function causes the reproduced audio to be derived from the record head rather than from the reproduce head. This permits a recording to be made on another channel synchronized (in phase) with the channel being reproduced. To record with selective reproduction, proceed as follows.

(1) Perform all steps in the pre-operating procedure.

(2) Perform all steps in the normal recording procedure for the channel to be recorded.

(3) Rewind the tape to the point where selective reproduction is to begin.

(4) Set the position is being

(5) Set the channel

selective reproduction (SEL/REP) switch to the "in" for the channel to be monitored while the recording made.

RECORD selector switch to the "in" position for the to be recorded.

(6) Set the MONITOR selector switch to the "in" (Tape) position for the channel being monitored.

(7) Set the MONITOR selector switch to the "out" (Source) posi­tion for the channel to be recorded.

(8) Adjust the LINE/MIC INPUT level control so that the VU meter indicates 0 for most audio peaks. (It is advisable to adjust the channel output levels so that the peak indicator lamps, located in the VU meter housings, blink occasionally.)

(9) Press the PLAY pushbutton to start tape motion. At the point where overdub is desired press the RECORD pushbutton to start recording on the selected channel(s).

(10) When recording is complete, press the STOP pushbutton to stop tape motion and deactivate the record mode, or punch­out by pressing the PLAY pushbutton.

NOTES: 1. The pitch control is used to finely adjust one track with another track(s). It can be used in both the Record and Reproduce modes.

2. The SEL. REP. mode has priority over the Record mode in this unit. (While the SEL. REP. pushbutton(s) is (are) pushed, the corresponding channel(s) can not enter the record mode.)

3-13

Page 24: Otari MX-505MKIII-2 Professional Recorder

SECTION IV. GENERAL INFORMATION OF MAINTENANCE

4.1 TEST AND MAINTENANCE EQUIPMENT REQUIREMENTS

All maintenance, electronic, and mechanical test equipments re­quired during maintenance, alignment, and adjustment of the recorder are listed in Table 4-1 and the standard test tapes are listed in Table 4-2.

In addition, recommended maintenance periods are shown by accumu­lative hours of usage and/or elapsed period of time, whichever comes first.

Equivalent equipment can be substituted for the equipment sug­gested in the table.

Table 4-1 Test and Maintenance Equipment

Equipment Type Suggested Model Used For Period

Head cleaner

Isopropyl or denatured alcohol

Q tips

Head demagnetizer

Lubricating oil

Spring scales 500 g, 1 kg, 3 kg (0.16 oz, 0.32 oz, and 0.10 lbs)

Vacuum cleaner and brushes

OTARI ZA-S1B

Any (OTARI Clean­ing Kit ZA-S1B contains the above cleaning rna terials. )

Any

Any

OTARI Lubricat­ing Oil PZ9E003

Any (pushing and pulling)

Any

Cleaning the heads and guides

Cleaning the tape guides, capstan, and pinch-roller

Cleaning the heads and guides

Demagnetizing the heads and tape guides

Lubricating the capstan of the DC servo control motor

Mechanical adjustment

General cleaning

8 hours

8 hours

8 hours

8 hours

1,000 hours or 6 months

1,000 hours or 6 months

1 month

4-1

Page 25: Otari MX-505MKIII-2 Professional Recorder

Table 4-2 Reproduce Alignment Test Tape

Tape Speed Equalization MRL *1

Catalog Number Reference Level

(Fluxivity)

15 ips NAB 21J205 250 nWb/m*2

7-1/2 ips NAB 21T204 250 nWb/ m*2

3-3/4 ips NAB 21F201-A 250 nWb/m*2

15 ips IEC 21J303 320 nWb/m*3

7-1/2 ips IEC 21T302 320 nWb/m*3

*1 Magnetic Reference Laboratory.

*2 Short circuit flux.

*3 Open circuit flux which corresponds to 290 nWb/m of short circuit flux.

4-3

Page 26: Otari MX-505MKIII-2 Professional Recorder

SECTION V.

ROUTINE MAINTENANCE AND CONVERSION INFORMATION

5.1 ROUTINE MAINTENANCE

It is important that routine maintenance should be performed at the recommended intervals.

Exterior cleaning and demagnetization should be performed after every eight hours of operation, and the interior of the transport should be cleaned once a month.

Lubrication should be performed after 1,000 hours of operation or after 6 months, whichever comes first.

5.1.1 CLEANING

Oxide particles from the magnetic tape tend to collect on the com­ponents in the tape path and degrade the performance of the re­corder. The heads and all other components in the tape path must be cleaned after every eight hours of operation, or more frequent­ly if visual inspection indicates that cleaning is required. To clean the head assembly, proceed as follows:

1. Disconnect the power cable from the power supply.

2. Lift the head cover as illustrated in Figure 5-1.

CAUTION

WHEN CLEANING THE HEADS, USE ONLY THE RECO~1MENDED SOLVENT (HEAD CLEANER) TO AVOID DAMAGING THE HEADS.

KEEP THE HEAD CLEANER AWAY FROM PLASTIC FINISHES AND THE CAPSTAN PINCH ROLLER.

DO NOT USE METAL TOOLS THAT CAN SCRATCH THE HEADS.

3. Clean each head stack thoroughly with a cotton-tipped appli ­cator (Q tip) dampened with head cleaner.

4. Use isopropyl alcohol to clean all tape guiding components including the capstan shaft, and the rubber capstan pinch roller.

CAUTION

1. DO NOT USE A HEAD CLEANER ON THE CAPSTAN PINCH ROLLER, SINCE THIS WILL CAUSE DAMAGE AND TAPE SLIP.

2. BEFORE REMOVING THE REAR COVER, THE PLUG MUST BE DIS­CONNECTED FROM THE POWER SUPPLY TO AVOID AN ELECTRIC SHOCK.

5-1

Page 27: Otari MX-505MKIII-2 Professional Recorder

Then slowly withdraw the demagnetizer as shown in Figure 5-2.

6. Repeat step 5 for each head stack.

7. Repeat the procedure in step 5 for each guide and other metal­lic parts in the tape path.

8. Move the demagnetizer slowly away from the transport at least three feeds, and then disconnect the power from the de­magnetizer.

Figure 5-2 Demagnetizing

5.1.3 LUBRICATION

The only component requiring lubrication is the capstan.

Lubricate the capstan every six months, or after each 1,000 hrs. of operation (whichever occurs first), or as required using the recommended lubricating oil (Table 4-1). For lubrication, pro­ceed as follows, referring to Fig. 5-3:

CAUTION

1. DO NOT USE ANY OIL EXCEPT ANDEROL OTARI LUBRICATING OIL PZ9E003 FOR LUBRICATION.

2. BE CERTAIN TO CLEAN THE CAPSTAN SHAFT THOROUGHLY. LUBRICATING OIL COULD RUIN THE CAPSTAN PINCH ROLLER AND MAGNETIC TAPE. CLEAN THE CAPSTAN WITH ISOPROPYL ALCOHOL AFTER LUBRICATION.

1. Remove the pinch roller cap by turning the cross-head screw counterclockwise.

5-3

Page 28: Otari MX-505MKIII-2 Professional Recorder

5.3 EQUALIZER CHANGE

The equalizer between the NAB or the IEC can be changed by sliding EQUALIZER selector switch on the rear panel of the amplifier unit.

However, a fine equalizer adjustment and a record level set are required.

Table 5-1 Record Level

Reference Relative Recording TapeTest TapeFluxivity to be usedLevel

Ampex Operating Scotch 177185 nWb/m* 0 dB Level Ampex 641

Scotch 206, 207, 226, 250+2.6 dB NRL NAB Standard250 nWb/m* Ampex 406, 407, 456

BASF or MRL IEC Equalization+3.8 dB320 nWb/m** IEC Standard

* Short circuit flux. ** Open circuit flux.

5.4 LINE VOLTAGE CONVERSION

The line voltage is converted by resoldering the wiring on the voltage selection terminal, proceed as follows:

1. Remove two flat head socket cap screws (marked A in Fig. 5-5) putting the ventilation channel. Remove four cross-recessed screws (marked B in Fig. 5-5) on the top ventilation cover (transport rear panel) from the rear of the equipment.

2. Draw out three connectors of ERASE/RECORD HEAD, REPRODUCE HEAD, TO AMP (Refer to Figure 5-5), and place the machine on its side.

3. Resolder the lead wire of the voltage selection terminal on the supply reel Ass'y to the desired voltage terminal marked as shown in Figure 5-4.

5 - 5

Page 29: Otari MX-505MKIII-2 Professional Recorder

5.5 FUSE REPLACEMENT

If a fuse is blown, it is important that the possible cause is checked before replacing the fuse.

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE OF FUSE. BEFORE REPLACING THE FUSE, REMOVE THE POWER CORD FROM THE POWER SOURCE.

Information concerning the seven fuses can be found in Table 5-2. For the main power fuse (FS1), proceed as follows:

1. Remove four screws (marked C in Fig. 5-5) holding bottom panel to the unit.

2. Open the bottoffi panel. Control P.C.B. assembly is located on the bottom panel.

3. Take a look at the inside of the unit, find the PUSH SWITCH P.C.B. assembly.

4. FS1, main power fuse is located on this P.C.B. assembly as illustrated in Figure 5-6.

5. All other fuses (Fl "v F6) are located on the Control P.C.B. assembly mentioned above, and illustrated in Figure 5-7.

6. Replace fuses as directed in Table 5-2.

C...JM N W ~ ~ w ws: s: s: 0w CI) [l.CI) CI) [l.n: ~ '-=­"-­

~ N -~ POWER SWITCH P. C. B.

Figure 5-6 Main Power Fuse Location

5-7

Page 30: Otari MX-505MKIII-2 Professional Recorder

5.6 SPEED CONVERSION

Normally MX-5050 MKIIT-2 is factory shipped out with 7-1 / 2 ips and 15 ips. But MX-5050 MKIIT-2 can be converted to 3-3/4 ips and 7-1/2 ips speed combination by user's modification. Followings are the information on speed conversion.

1. Refer to page 5-7 to access to control P.C.B. assembly. It is located on the bottom panel.

2. Take a look at the control P.C.B. assembly. There is black speed select switch on it.

3. Just slide the knob of the speed select switch to ilL" position.

4. Then put back the bottom panel.

5. Adjust all pots to have optimum performance (reproduce EQ. SRL. bias record EQ. record level, and so on) .

5-9

Page 31: Otari MX-505MKIII-2 Professional Recorder

SECTION VI

P.C.B. ASSEMBLIES AND PARTS LISTS

The following P.C.B. pattern layout drawings and parts list are provided for service reference. Parts list includes only main parts or the parts difficult to obtain in the field. Also the lists include the parts which should be replaced with the exac t same parts supplied by OTARI to maintain the performance. Many diodes, transistors, and ICs are well described in the schemat­ics attached to the machine, so to find out the correct parts number of those parts you need to, refer to the schematics.

6-1

Page 32: Otari MX-505MKIII-2 Professional Recorder

en 'U I tJj

I'" l2! '" '" Ul 0

® n 0 z '"'I ::0 0 t-<

'U

n tJj

'" Ul Ul

ffi t-< ><

IV

Page 33: Otari MX-505MKIII-2 Professional Recorder

PB-44SD CONTROL

Ref. No.

IC2, 3 X VRl RL603 'V 7 RL601 'V 2 R413 Rl14 R301, 303 'V 4 R403 R302 SWl SW2, 3

P.C.B. ASSEMBLY

Description

P.C.B. Connector Connector Connector Connector Connector Connector Connector Connector Connector Connector Connector Connector Spark Killer Fuse Fuse Fuse IC Crystal Potentiometer Relay Relay Resistor Resistor Resistor Resistor Resistor Switch Switch

[2] :

6 -5

Parts No.

PB9A437 CN402213 CN403043 CN403075 CN404044 CN405045 CN406046 CN406077 CN407047 CN407048 CN408 22 7 CN410050 CN415229 CZ20001W FH7F020 FH7F030 FH7F050 I-0012 PZ4C014 RV423171 RY1DC029 RY1DC040 R8DJR33M R8DJllOM R8DJ180M R8DJ5R1M R93-002K WH34008 WH91045B

Notes

"EI" Type 2P "EI" Type 3P Pin Housing 3P "EI" Type 4P "EI" Type 5P "EI" Type 6P Pin Housing 6P "EI" Type 7P "EI" Type 8P 8P Male "EI" Type lOP 15P Male 0.1 + 120 1l 2A 3A SA

400kHZ 2kll

3W 0.33 1l 3W ll ll 3W 18 1l 3W 5.11l 5W 1001l Speed

Page 34: Otari MX-505MKIII-2 Professional Recorder

SECTION VII

EXPLODED VIEW DRAWINGS AND PARTS LISTS

The followings are the exploded view drawings and parts lists. Parts list titles are followed by a key number which refers to the corresponding exploded view drawing number.

When ordering parts, give a full description, using both the part number and the name of the part. If there seems to be a discrepancy between the drawings herein and your machine, contact OTARI.

7-1

Page 35: Otari MX-505MKIII-2 Professional Recorder

6

>-3 lJl o en en

...-03 x 35

)

. ;:-'2 r:1 03x 20B

j' - 42 /"

/"

~ /-1

I .____ 4

F4x12 ~

TS3x6

BS3x20B fS4x10 \

~ .

53x20

...........

PS4x8 I

l I

l I

!BS4x30:yft r BS3x6B-----i 1

BS4J<6

Page 36: Otari MX-505MKIII-2 Professional Recorder

5

10

15

20

25

30

35

40

T5068 TAPE

Ref. No.

2- 1 2 3 4

6 7 8 9

11 12 13 14

16 17 18 19

21 22 23 24

26 27 28 29

31 32 33 34

36 37 38 39

41 42

DECK ASSEMBLY [ 2] :

Description

Panel Ass'y, Trim Pole, Guide Panel, Trim, Control Panel, Top Clamp, Code Bracket, Panel Reinforce Trans, Power Cover A, Deck Flame Bracket, Rear Panel Bracket A, P.C.B. P.C.B. Ass'y, Control Edging Angle, P.C.B. Cushion Bracket, P.C.B. Cover B, Deck Rock, Bank Bracket A Bracket B Bracket, Spring Stopper Arm A Arm B Shaft Angle Spring Panel, Deck Connector Connector Ass'y Connector, Ass'y Inlet Connector Connector Connector Connector Connector Terminal, Earth Retaining Ring, E Type Retaining Ring, E Type Blind Blind Washer, Trim Washer

7-5

Parts No. Notes

T5064-A KG6E003 T506702 T506701 PZ1G053 T506604 TFll074 T506802 T506501 T506801 PB44S01 PB-45NA PZ1G092 T506809 PZ1C065 T506804 T506803 PZ1F016 T506805 T506806 T506807 T506808 T506810 T506811 T506812 KZ2A089 GS1094 T506813 CN7C-006 12P CN603012 CN105026 CNl10030 CN225136 CN234130 CN7B-061 CN901040 F74TE23 6 PIE F74TE09 2 PIE PZ1B051 PZ1B052 KZ6C051 KZ6COll

Page 37: Otari MX-505MKIII-2 Professional Recorder

I

'\

M

>< o-:l

~ rLl (fJ (fJ

<t:

~ <t: p.

g;j

" U g;j :r: u N

(') (')

<D M g:,,'

<D­

~ Cl.

50

-~

I (')

<D/

) ),

N

r-

Lf)

'" o

<t: .-I

Page 38: Otari MX-505MKIII-2 Professional Recorder

5

10

15

20

25

K1069 CASE ASSEMBLY [4] :

Ref. No. Description

4- 1 Panel A, Side 2 Panel B, Side 3 Amp. Ass'y, 2ch Rec/Rep 4 Cover, Ventilation

Reel Ass'y 6 Tension Arm Ass'y A 7 Tension Arm Ass'y B 8 Capstan Ass'y 9 Pinch Roller Ass'y

Head Ass'y 11 Roller Ass'y, Impedance 12 Timer Ass'y, Tape 13 SW Ass'y Control 14 Cover, Upper

Supporter, Front Cover 16 Frame, Bottom 17 Cover, Bottom 18 Cover, Front 19 Foot

Stud 21 Washer 22 Washer, Trim 23 Washer 24 Washer, Trim

Stopper 26 Spacer 27 Bracket

7-9

Parts No. Notes

K106901 K106902 A1065 K106904 KW-4R KA-4X KA-4Y KC-4Y KP-4N KH-41I KI-4J SR-5K CB-253 K105827 K105829 K106905 K105831 K105828 CY4070 KZ9L150A KZ6COll KZ6C051 KZ6C042 KZ6C028 KZ2A092 K106903 KZ3A045

Page 39: Otari MX-505MKIII-2 Professional Recorder

(I · ;/ . r,

25

2

3

44

4

Page 40: Otari MX-505MKIII-2 Professional Recorder

CB-253 CONTROL SWITCH ASSEMBLY [6] :

Ref. No. Description Parts No. Notes

6­ 1 2 3 4 5 6 7 8 9

10

Button A Button B Button C Button 0 Guide, Button Guide, Button Panel, Top, Control P.C.B. Ass'y, LED (B) Switch, Micro P.C.B. Ass'y, Power Switch

KN2069 KN2070 KN2071 KN2072 CB20602 CB20701 T506705 PB-83E WHl1007 PB-78HA

7-13

Page 41: Otari MX-505MKIII-2 Professional Recorder

-J

I-' U1

,

, ,

tS3x6

I

29

16

2

3

4

28

F2x4

fl~ _iF';. ~ -- 17

eD

TS3x6

-TS3x6

I

Page 42: Otari MX-505MKIII-2 Professional Recorder

KH-411 HEAD ASSEMBLY [ 8] :

Ref. No. Description

8- 1 Housing ASs'y, Head 2 Stud 3 Base Plate, Head 4 Bracket, P.C.B. L 5 Bracket, P.C.B. R 6 P.C.B. ASs'y, Head 7 Spring, Head 8 Spring, Head 9 Spring, Head

10 Head ASs'y, Erase 2T/2ch Head Ass'y, Erase 4T/2ch Head ASs'y, Erase FT Head ASs'y, Erase 2T/2ch

11 Head Ass'y, Repro. 4T/2ch Head Ass'y, Repro. 2T/2ch

12 Head ASs'y, Rec. 2T/2ch Head Ass'y, Rec. 4T/2ch Head ASs'y, Rec. FT

13 Head Ass'y, Repro. 2T/2ch Head Ass'y, Repro. 4T/2ch Head ASs'y, Repro. FT

14 Cover, Housing A 15 Guide Ass'y, Tape 16 Housing, Head 17 Connector 18 Bracket, Connector 19 Plate, Shield 20 Washer, Pollyslider

7-17

Parts No. Notes

KH-4Y-A KH4Y009 KHOC019 KH41IOI KH41I02 PB-78IA GS2019 GS2016 GS2015 GH4E082B B2H

B4H BF

B2H-DIN GH4P069C B2H B2H-DIN

B4H FT GH4R005B B2H B2H-DIN

B4H FT

GH4P027A B2H B2H-DIN B4H FT

KHOF038 KGODOOC KHOF037 CN314002 KH4Y004 KH4YOOIA F524-3

Page 43: Otari MX-505MKIII-2 Professional Recorder

·f- -03x5

, ' -. ~ ,

F4x15

10

F3x6 /

7

Page 44: Otari MX-505MKIII-2 Professional Recorder

ZA-63X CRBLE ASS 'Y

7-5

i::..l 4- 3

!:1 4-5

a: 0 ~

P. C. B. u ASS 'y I z"' z

0 PB-,BO u

J ,

,,-'

L.CRPSTRN

, ~" 2' V"" , ::::' ~N ~ L, SPEED

L GNO

RSS'Y

!EDIT I

~THER"I!SE SPECIF lED RE51STRNCE VRLUES ,qRE I N JHMS.j/.~.5 % CAPAC I TANCE VALUES RRE IN FARADS.SOV

~! I~ Lo.JII III

a

PHOT~ Ml PHOT~ M02

Tn EXT.CONT.CONNECTOR PIN 241

[±EEEEl III: ai >-<oJ .'

'I: U V'l- . '" RESET0"0 .-'-'-r-lr-,'-T=-

~,,-a:

---1 f-- I i-l~~_~~~~ OO~~~~~N_m

~II:~II:II:II:~ "~""'J

~ ~ 1: ~ ~ l: ~ ~= l: ~ l: 1: 1: 1: 1: 1: ~

a:<DU"'<oJ~'" '"' \~ Iz r :c I: u') Vl LU 0 :::: 1 ~~~~~~~ ~-o-o-~z~ WWWLU~~W __ - W~

lIlr,()VlVlIJ'lI/lU1 U1 II:

'" CRPSTAN MOTOR P.C.B. I~,I iii i I I , ,. i

~

=1~lml~I~I¢I~ I ~I-

II ~f~1 I I

@ TANTALUM ELEC TROLYTIC CAPACI TOR

o.J

a:

(TENSION) \1 .5V ML3 ARM l REC MN2

MW2 M~3

"~4

CUE MN6 DELRY 5 MH7

LEO ON MNB GNO C MN10

RC B.5V ML2 AC OV Mll -IBVIRJ ML7-9 .IBVIRI!M14-6!

F . F~O

AHO PLAY

1-3N

"'

-'-"-1.:.;....!2 P1- 4

CONTROL P. C. 8. ASS 'y

u

0 ~

Z

M~5

M~6

AE C REC LED

I%

'"U

..J

'"a: ~

z 0 u

~

x

10 II 12 13 1 ,

l? 16 TO 017

COLLECTOR

NN2

.t!.t!l lli NNS MP8

~

OJRIR / FI

~ EXT.CONT. GNO = .li...J..E.i.. 7. SIPS

~ OC 12V

- J

10 20 12 21

~ I

10 20 12 21 22

::-lr-;\, ,

~C}1~

o N~TES: UNLESS ~

a: " ~ '"

19

a:

"' ... ..J ... a: "

- 1 BV 1 AI ML7-9 GNO C MH\-6

+ I BY I AI MU-6 GNO C MHI-6 GNO C MGI

-18YIAJ GNO C

.1 BV I AI

12- 1 12-2 12-3, 12- ,

0.:.! Z=.l :?::1 U 2.:.i 7-6 7-7 7.::1.

TO "11-131:11.­

(AMP)

0::: .",

1. 2. ® POLYPROPYLENE FILM CRP,gCI TOAI! SZI 3 . CAPACITOR SYMBOL ~RRKS RRE RS FOLLOWS ~ LOW LERKAGE CURRENT ELECTROLYTIC CRPRCIToR ~ ~'RLUMI HUM EL EC TROLYTIC CAPRCITOR ~ METALLIZED PAPER CAPRCITORI! 101.1

• 'BIP OLAR ALUMinUM ELECTROLY TI C CRPRCITOR -!tit SPARK ~ILLER .f) ,MYL RR OI L" CRPAC I TOR I!5%. 50 VJ 4. & SRFETY tJMP~NDT ,RE? ~ ANCE ONLY "I TH THE ~ ,POL YSTYR ENE ~ i L M [ ~pqc: r OR~S%.SOVJ SPECIF IED COMPONENT F OR SRFETY RERSON NAME TRPE DEC :~ ASS'r ,0) 'CERAM I C CRP ACI TOR [ffi l ~ ,~ 'MICR CAPAC I TOR I! 5XI p CI~ T

Page 45: Otari MX-505MKIII-2 Professional Recorder

~

R3 FRST

Q2

IC N I - 7 I CUE ~~ I I 10K

10K Ql 'x 10ELY 24V

RI2.,." Q8

+24V ,\~

4.7K 0

:J lfl "'­

X 10ELY 5V :J

0 0

+ ~~:;Jg ~16 1 Rl~'IV' ~~~

10K 2.2K

_ C'­

v a: 0

a: .

(!) ~

v

0a: ,-, Ir )Q4

+5V

Q6

R15

REF N(j 1-6

10 . II Q 7.9

8

1 I C

I0 ~. 3

(jTRRI PRRT N(j

QC1815BL

QRI015BL QB605K

IMC14001

PNSMI-02 PN-0199

OESCRIP­TI(jN

2SC1815BL

2SRI015BL 2SB605K

MC14001BCP

SMIR-02 FOH9615

I

ICNI-21 mtC 02 R14 .. II''''''; 10K Q9

R23 REC C(jM

430

'-____~I ll

R19

lOOK

+5V

R16 LED (jN

::cco~~220 o~a:3 (\J

(\J

a:

rCNf-4\ GNoh

zcNClTES : UNLESS ClTHERWISE SPECIFIED O::E \. RESISTANCE YAWES ARE IN CHMS, IlW,S% (!) TANTALUM ELECTRIlLYTIC CAPACITOR 'r:> 2. CAPACITANCE VALUES ARE IN FARADS SOY f) POLYPROPYLENE FILM CAPACITOR ttS%)30 CAPACITOR SYM80L MARKS ARE AS FOLLOWS <!;) LOI< LEAKAGE CURRENT ELECTROLYTIC CAPAClTaR

0Jl : ALUMINUM ELECTROLYTIC CAPACITOR 8 METALLIZED PAPER CAPACITIlR ttl 0%) w <D :BIPOLAR ALUMINUM ELECTROLYTIC CAPACITOR fttl SPARK KILLER I!l : MYLAR FILM CAPACITOR I±S%,SOYI 4> SAEFTY COMPONENT :REPLACE ONLY WITH THE I REC READY I.IlEL Y IC::l<ll :PIlLYSTYAENE FILM CAPRCITIlRI±S%,SOYI SPECIFIED COMPONENT FOR SAEFTY REASON NAME CCT p, C, 8 ASS 'Y.::>. © : CERAMI C CAPACITIlR ® : MICA CAPACITOR (>SI. I

Page 46: Otari MX-505MKIII-2 Professional Recorder

-~ .• "1 • •. • . •• ..

n D Z -< :n CiI r

" n

'"

;:; ~ :;;:::;:::;:::;a;:: ~

~

, '

' I I

_ .

j - - - 1-- -" --- - ---~

b·~I·~~~1

Page 47: Otari MX-505MKIII-2 Professional Recorder

/11111,.. lJI "-\tll

7-1. , .. " 0

1-4

~(O"I'II1lUCf A"o"LlflUi rM CI'I1..

@ IIU(I'I(IIC( ..unlfl'l Afllt: lSI' TIt( 1.00 lUUU.

~ 11---0:--: l.:rl~1

II!CDfIIO ","'LlflE,'!

rM CII1.

/lUffll[/tC[ i'tIJ,.a(II ""( II'

r"[ JOO 3lJt1U.

~

EIII

IH hlU'tifJlDl

(; II Q

~-,

[OQII:.'

~ I I I 10

~ ~ "tI

"" "" 10·sl.....lIl=-j

1

~";"I"I"i"l~

§ 8

o"LUI OET(CUI'I .. 'ij ,.,HUt

, ""urlfl'l rll'l tH2.

,,

,,('(}IUIU IU",UU Ml ~ TII( aoo S(lII(,.

----------------­

. ____ J __1.. __

II U r"i" 16-2

e 10.110

-------------------------------­ ______ 1

lat. ~DI " i 1.01..202 ~16 112-1.II5.]Dl-llQ tOI-'U.SO"l-.'.a.s;

II U f­

lit".. , 'AI'IT IIl.II\JUl OUC1'IJ"TIC"

1-0017

I-<lnl ~"2anO

1-000.1 IIJIII.s.5.D

Q""" 2.!,,7!1U o.CtS.lU UCIS.llG g(UISIL UCIIIUL

Q-"IIIIas.J I""''' 1CZ"3H( : Z.3Cll'H:

8 , __t'_:_____:~ ~~ ~=~~j~""""""" "" a~B} J2§0t 1 7at.jOl!i>~AKI)(fLnU

~ ] ;::~!J :J 81~~~ ~~~ 2:~ .O:I)G~01-1J ~~;: '-' -'.', 10"· I" ",0

" '"'" ~ e ~: .,n ~,j,~ :,\: ,,----',,-'iU<LI,"'-""'" t. ,II II Ol'.! gg ",., ";::" "','7." 8 :-____'",!'h ____________________G__ _____ 8' -- -­--- -- ­-- --- -- -­---®::--~ =:--~ -, ~! 3 ~e 1:-;;;:1 ";::" :"',',~"t ""'" ~----­----- ~---- ----­-----­ (ill """'" '"'~"" "" .,os ' : .; OJ,,, '" ;"

IQ'-ll l .104-21 I 101.601.101-145 ,n_64j.1a7.407 511.';;12 117.217.I".ZU 1\1.211.120.120 302. iijl-:-3a~. 50i.5tO 501 . 5Q2 •.50... 50.l

'" 181=-iTo.lOl-1I0

~AI Oll( ljAIOIH. ~.u.Jlau U-JIO" ~t111 10 ! ~3Ct It 10 II/HOISr.I!. I2.3A1USCA

Fii'iiiiiS

tI : ~IUOI-.nrr- .. * I\~." II -----------~:";i ___ h _____ ---------: ..". 1_______ 1'0-"'.. 1"·;""' ____ h. ~r- ~~_ "':"Q ..., '''' .. , i no" ,,, '"' _. _.. I po., , 1'\:;, , f r~Ql ~III.U 1 I ~-J! ~ - ~ (1'I.ct3[ I

_ i TrIl !!II'. i i_I I h

"" ,j, r '" i ... J G1.5 HOII to

j "",.. i ""lE ': H :J­,"""'" 1

~ I ,~u" J-(Jlun ~ G ,,0 I 1-5

1.$ UOiol

~ G'i'O

LL£.....l Cii""""5'

"..- .... [00 UC l

i:I 111l-IIJ.11l~ 1U lal-1I0. ~01-' I a Ul . .50A-Sct1 5U-Stl,.5U 101.701 111.111. 1I2.~!2 i'nOI222 .s02. SOl 1'~- O OI t HI . Ht..sll.l

!"8-1UII I '-'-\1[",if

I ~D-1221

Aoi:1m

NOTES: UNLESS OTHERWISE SPHIFIED t. flES13 TAKer YAWE' ARt: ill ~1tl'I.5. l/j .... 51 2. QlP'IIIClTR",CE Vj:lUJ£j RII( !It FAMDS sav 1. C,qI"RClHIR Sfl"ll!ltlL MP'!I'!S IUlf tiS rOlLllllS

.. ri!:W"'llfUM ElfCTMLTTlC CR"ACJr~" (I ,!lI"CLRI'I AWrtJIIUn tLECflHIUTlC CAr"CHIIR of) 'rlfLA" f(LM CAP'RtlH[I'I!t5X,SOV I •• POLT,rr,.t:,,( FILM CAP.AClTOA!:rS:l , SOYI ~ 'CEIlAnJC ;:APRQTCA • I ruel! (AP'AClTOA ItHl t1I I fA/HAlU", fLECT.AdlTTjI; C,qP'.IIC)tIlR of) ,1"0LT""0I"TL£II[ fILM :: AP'AClTOfllttHI " , ...OW LEAkAGE CUARE1H HfCTR!!L"fTlC CAPAt..ITrJA

zo en:,'"

REC ~ REPR O ~MP , NAME • p, C, 3, RSS 'Y CO I

I n 1 r"'I ...... -. ,.... ,... 1 ..--..

VI

Page 48: Otari MX-505MKIII-2 Professional Recorder

t1X5050 MK-III 2 TAPE PillCORDER

SCHEHATIC DIAGRAHS TYPE E

OTARI PART # DESCRIPTION DWG. IF

A10620B REC/REP AMP. ASS'Y 3-8097 PB44S0C CONIROL P.C.B. ASS'Y 3-9055 PB7800A REC.DELAY CONTROL P.C.B. ASS'Y 3-8495 T50680B HIRING DIAGRAM 3-9054

MX5050 HK-III 2 28. FEB . 1984