diagrama LG prolite -D686

7/21/2019 diagrama LG prolite -D686

http://slidepdf.com/reader/full/diagrama-lg-prolite-d686 1/214



- 2 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes

LGE Internal Use Only

Table Of Contents

1. INTRODUCTION ..................................................................... 3

1.1 Purpose ........................................................................................................3

1.2 Regulatory Information .........................................................................3

2. PERFORMANCE...................................................................... 5

2.1 Product Name ............................................................................................5

2.2 Supporting Standard ..............................................................................5

2.3 Main Parts : GSM Solution .....................................................................5

2.4 HW Features ...............................................................................................6

2.5 HW SPEC ......................................................................................................82.6 D686 Figures ........................................................................................... 22

3. TROUBLE SHOOTING .......................................................... 23

3.1 WCDMA Rx Part ...................................................................................... 23

3.2 WCDMA Tx Part ...................................................................................... 37

3.3 GSM Rx Part ............................................................................................. 54

3.4 GSM Tx Part Troubleshooting ........................................................... 67

3.5 Power ......................................................................................................... 75

3.6 Charging ................................................................................................... 80

3.7 USB .............................................................................................................. 82

3.8 Audio .......................................................................................................... 83

3.9 6 AXIS Sensor .......................................................................................... 97

3.10 Proximity Sensor ...............................................................................100

3.11 Touch Sensor ......................................................................................102

3.12 Vibrator .................................................................................................104

3.13 Camera ..................................................................................................106

3.14 LCD .........................................................................................................110

3.15 BT/Wi ...................................................................................................113

3.16 GPS Part ................................................................................................1173.17 FM Radio ...............................................................................................122

3.18 IRRC ........................................................................................................124

4. DOWNLOAD .......................................................................127

5. BLOCK DIAGRAM .............................................................. 144

6. CIRCUIT DIAGRAM ............................................................ 152

7. BGA PIN MAP .....................................................................161

8. PCB LAYOUT ....................................................................... 165

9. CALIBRATION .....................................................................167

10. HIDDEN MENU ................................................................. 186

11. DISASSEMBLE GUIDE ...................................................... 210

12. EXPLODED VIEW & REPLACEMENT PART LIST .............214





1. INTRODUCTION

1. INTRODUCTION

This manual provides the information necessary to repair, calibration, description and download the featuresof this model.

1.1 Purpose

Toll fraud, the unauthorized use of telecommunications system by an unauthorized part (for example,persons other than your company’s employees, agents, subcontractors, or person working on yourcompany’s behalf) can result in substantial additional charges for your telecommunications services.System users are responsible for the security of own system. There are may be risks of toll fraud associatedwith your telecommunications system. System users are responsible for programming and configuringthe equipment to prevent unauthorized use. The manufacturer does not warrant that this product isimmune from the above case but will prevent unauthorized use of common carriertelecommunication service of facilities accessed through orconnected to it. The manufacturer will not be responsible for any charges that result from suchunauthorized use.

1.2 Regulatory InformationA. Security

B. Incidence of Harm

If a telephone company determines that the equipment provided to customer is faulty and possiblycausing harm or interruption in service to the telephone network, it should disconnect telephoneservice until repair can be done. A telephone company may temporarily disconnect service as long as repairis not done.

C. Changes in Service

A local telephone company may make changes in its communications facilities or procedure. If thesechanges could reasonably be expected to affect the use of the phones or compatibility with the net work,the telephone company is required to give advanced written notice to the user, allowing the user to take

appropriate steps to maintain telephone service.

D. Maintenance LimitationMaintenance limitations on the phones must be performed only by the manufacturer or its authorized agent. The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore,note that unauthorized alternations or repair may affect the regulatory status of the system and may void anyremaining warranty.

E. Notice of Radiated Emission

This model complies with rules regarding radiation and radio frequency emission as defined by local

regulatory agencies. In accordance with these agencies, you may be required to provide information such asthe following to the end user.





1. INTRODUCTION

ATTENTION

H. Electrostatic Sensitive Devices

Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the sign. Followinginformation is ESD handling:

• Service personnel should ground themselves by using a wrist strap when exchange system boards.

• When repairs are made to a system board, they should spread the floor with anti -static mat which is

also grounded.

• Use a suitable, grounded soldering iron.

• Keep sensitive parts in these protective packages until these are used.

• When returning system boards or parts like EEPROM to the factory, use the protective package as

described.

A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference fromunsuppressed engines or electric motors may cause problems.

G. Interference and Attenuation

F. Pictures

The pictures in this manual are for illustrative purposes only; your actual hardware may look slightlydifferent.



2. PERFORMANCE



2. PERFORMANCE

2.1 Product Name

LG-D686 : WCDMA 850/900/1900/2100+GSM850/EGSM/DCS/PCS

(HSUPA 5.8Mbps(cat6)/HSDPA 7.2Mbps(cat8)/GPRS Class12/EDGE Rx only Class12)

2.2 Supporting Standard

Supporting Standard

WCDMA(FDD1,2,5,8)/EGSM/GSM850/DCS1800/PCS1900

with seamless handover

Phase 2+(include AMR)SIM Toolkit : Class 1, 2, 3, C-E

Frequency Range

WCDMA(FDD1) TX : 1920 – 1980 MHz

WCDMA(FDD1) RX : 2110 – 2170 MHz


WCDMA(FDD2) RX : 1930 –1990 MHz





EGSM TX : 880 – 915 MHz

EGSM RX : 925 – 960 MHz

GSM850 TX : 824 – 849 MHz

GSM850 RX : 869 – 894 MHz

DCS1800 TX :1710 – 1785 MHz

DCS1800 RX : 1805 – 1880 MHz

PCS1900 TX : 1850 – 1910 MHz

PCS1900 RX : 1930 – 1990 MHz

Application Standard

Item Part Name Comment

AP Chip MT6577 (MTK)

CP Chip MT6577 (MTK)

2.3 Main Parts : GSM Solution



2. PERFORMANCE



2.4 HW Features

List Type / Spec.

1. Phone Type DOP Type

2. Size 150.25 x 76.94 x 9.43mm

3. Weight 163.9 g

4. BatteryBrazil : 3,040mAh ( typ.)

Other Country : 3,140mAh ( typ.), 3,040mAh(min) (Li-Ion)

5.Chipset MT6577

6. Memory 8GB(EMMC) +8Gb(LPDDR2)

7. LCD

Size 5.5 inch

Dot 540(H) X 960(V)

Color 16.7M colors

Display Type Active matrix TFT, Transmissive Type

NTSC Typ. 70%

Contrast Ratio Typ. 1000:1

Pixel Pitch 0. 042mm (201.6ppi)

Color temperature 5000 ~ 9000(K) ( typ. 6500K)

8. Main Camera (8M)

Type CMOS image sensor

Resolution 3296(H) X 2512(V) pixels.

Frame Rate 22.5 fps@ Full Size(3280*2464)

View Angle 71.4˚ ± 1˚ (Diagonal)

Image Scaling Down 8M(3264x2448), W6M(3264x1836),



2. PERFORMANCE



5M(2592x1944), 1M(1280x960)

Pixel x size 1.1um X 1.1um (square pixel)

10. Audio

1) MIDI MIDI

2) Mono 15 X 11 X 3T Speaker

3) Receiver 13 X 07 X 2.7T Wideband Receiver

11. BluetoothEffective Distance 10M

Distance 0 m ~ 10 m (depend on environment)

12. WLAN

standard IEEE 802.11 b/g/n

Throughput Max 40Mbps (SDIO Driver performance)

depend on environment 0 ~ 50m (depend on environment)

13. GPS type A-GPS, GNSS



2. PERFORMANCE



2.5. HW SPEC

1) WCDMA transmitter specication

Item Spec. Min Typ. Max Unit

Maximum OutputPower

Power class Ⅲ 21.0 23.0 25.0 dBm/3.84MHz

FrequencyAccuracy

- -200 - +200 Hz

Minimum OutputPower - - - -50 dBm/3.84MHz

OccupiedBandwidth

- - - 4.6 MHz

Adjacent ChannelLeakage Power

Ratio

Δf = ± 5MHz - - -33 dBm/3.84MHz

Δf = ± 10MHz - - -43 dBm/3.84MHz

Error VectorMagnitude(EVM) - - - 17 %

Peak CodeDomain Error - - - 15 dBm/3.84MHz

Open LoopOutput Power

Ior =-106.7dBm/3.84MHz -46.7 - -28.7 dBm/3.84MHz

Ior =-65.7dBm/3.84MHz -23.0 - -5.0 dBm/3.84MHz

Ior =-25.0dBm/3.84MHz -0.0 - 14.0 dBm/3.84MHz

Transmit OffPower - - - -56 dBm/3.84MHz

SpectrumEmission Mask

Δf = 2.5~3.5MHz -35-15 * (Δf-2.5) dBc/30KHz

Δf = 3.5~7.5MHz -35-1 * (Δf-3.5) dBc/1MHz

Δf = 7.5~8.5MHz -39 10 * (Δf-7.5) dBc/1MHz

Δf = 8.5~12.5MHz -49 dBc/1MHz



2. PERFORMANCE



Transmit SpuriousEmission

9kHz ~ 150kHz -36 dBm

150kHz ~ 30MHz -36 dBm

30MHz ~ 1GHz -36 dBm

1GHz ~ 12.5GHz -30 dBm



2. PERFORMANCE



Item Specification

Receive Frequency

FDD1: 2110 ~ 2170 MHz

FDD2: 1930 ~ 1990 MHz

FDD5: 869 MHz ~ 894 MHz

FDD8: 925 MHz ~ 960 MHz

Reference Sensitivity Level<REFÎ or>

FDD1 : BER < 0.001 when Îor = -106.7 dBm / 3.84 MHz

FDD2 : BER < 0.001 when Îor = -104.7 dBm / 3.84 MHzFDD5 : BER < 0.001 when Îor = -104.7 dBm / 3.84 MHz

FDD8 : BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz

Maximum Input Level BER < 0.001 when Îor = -25 dBm / 3.84 MHz

Adjacent Channel Selectivity

(ACS)

ACS > 33 dB where BER < 0.001 when

Îor = <REFÎ or> + 14 dB / 3.84 MHz

& Ioac = –52 dBm / 3.84 MHz @ ±5 MHz

Blocking Characteristic

BER < 0.001 when Îor = <REFÎ or> + 3 dB / 3.84 MHz

& Iblocking = -56 dBm / 3.84 MHz @ Fuw(offset) = ±10 MHzor Iblocking = -44 dBm / 3.84 MHz @ Fuw(offset) = ±15 MHz

Spurious ResponseBER < 0.001 when Îor = <REFÎ or> + 3 dB / 3.84 MHz

& Iblocking = -44 dBm

Intermodulation

BER < 0.001 when Îor= <REFÎ or> + 3 dB / 3.84 MHz

& Iouw1 = -46 dBm @ Fuw1(offset) = ±10 MHz

& Iouw2 = -46 dBm / 3.84 MHz @ Fuw2(offset) = ±20 MHz

Spurious Emissions< -57 dBm / 100 kHz BW @ 9 kHz ≤ f < 1 GHz

< -47 dBm / 1 MHz BW @ 1 GHz ≤ f ≤ 12.75 GHz

Inner Loop Power Control

In Uplink

Adjust output(TPC command)

cmd 1dB 2dB 3dB

+1 +0.5/1.5 +1/3 +1.5/4

0 -0.5/+0.5 -0.5/+0.5 -0.5/+0.5

-1 -0.5/-1.5 -1/-3 -1.5/-4

group(10equal command group)

+1 +8/+12 +16/+24

2) WCDMA receiver specication



2. PERFORMANCE




Trandsmitter

5.2.A MaximumOutput Power

with HS-DPCCH

1/15 ≤ βc/β d ≤ 12/15

13/15 ≤ β c/βd ≤ 15/8

15/7 ≤ β c/βd ≤ 15/0

21.0

20

19

23.0

23.0

22.5

25.0

25

25

dBm/3.84MHz

5.7A HS-DPCCHMAX

/

0dBm

Step 0 0 dBm +/- 1 dB dB

Step 1 –Step 0 6 dB +/- 2.3 dB dB




5.9A SpectrumEmission Mask

with HS-DPCCH

Δf = 2.5~3.5MHz -35-15 * (Δf-2.5) dBc/30KHz

Δf = 3.5~7.5MHz -35-1 * (Δf-3.5) dBc/1MHz

Δf = 7.5~8.5MHz -39 10 * (Δf-7.5) dBc/1MHz

Δf = 8.5~12.5MHz -49 dBc/1MHz

5.10A AdjacentChannel LeakagePower Ratio with

HS-DPCCH

Δf = ± 5MHz - - -33 dBm/3.84MHz

Δf = ± 10MHz - - -43 dBm/3.84MHz

5.13.1A ErrorVector

Magnitude (EVM)with HS-DPCCH

MAX Power

-20 dBm- - 17.5 %

Receiver 6.3A Maximum Input Level forHS-PDSCHReception

Pin = -25dBm - - 10 BLER(%)

3) HSDPA transmitter specication



2. PERFORMANCE



Item Spec.

Phase Error Rms : 5° Peak : 20 °

Frequency Error GSM : 0.1 ppm DCS/PCS : 0.1 ppm

EMC(Radiated Spurious EmissionDisturbance) GSM/DCS : < -28dBm

Transmitter Output power and Burst Timing GSM : 5dBm – 33dBm ± 3dB DCS/PCS : 0dBm – 30dBm ± 3dB

Burst Timing <3.69us Spectrum due to modulation out to less

than 1800kHz offset 200kHz : -36dBm

600kHz : -51dBm/-56dBm

Spectrum due to modulation out to largerthan 1800kHz offset to the edge of the

transmit band

GSM : 1800-3000kHz :< -63dBc(-46dBm)

3000kHz-6000kHz : <-65dBc(-46dBm) 6000kHz < : < -71dBc(-46dBm)

DCS : 1800-3000kHz :< -65dBc(-51dBm)

6000kHz < : < -73dBc(-51dBm)

Spectrum due to switching transient 400kHz : -19dBm/-22dBm(5/0), -23dBm 600kHz : -21dBm/-24dBm(5/0), -26dBm

Reference Sensitivity – TCH/FS Class II(RBER) : -105dBm(2.439%) Usable receiver input level range 0.012(-15 - -40dBm)

Intermodulation rejection – Speechchannels

± 800kHz, ± 1600kHz : -98dBm/-96dBm (2.439%)

AM Suppression - GSM : -31dBm - DCS : -29dBm

-98dBm/-96dBm (2.439%)

Timing Advance ± 0.5T

4) GSM receiver specication



2. PERFORMANCE




Output Power DH5PRBS9

Power(Class I)

0 - 20 dBm

Power Density DH5PRBS9 @100kHz RBW - +20 dBm

Power Control DH1PRBS9

Step size 2 - 8 dB

Power(min) - 4 dBm

Frequency Range DH5PRBS9

-30dBc@100kHz RBW

2400 - 2483.5 MHz

Tx Output Spectrum(20dB BW)

DH5PRBS9

Δf =f H-f L - 1 MHz

Tx Output Spectrum(Adjacent Output

Power)DH5PRBS9

@M-N = 2 - -20 dBm

@M-N≥ 3 - -40 dBm

Modulation Index

DH511110000

f1AVG 140 - 175 kHz

DH510101010

f2MAX 115 - kHz

f2AVG /f1AVG 0.8 -

Initial Carrier Freq. Tolerance DH5PRBS9 -75 - +75 kHz

Carrier Frequency Drift

DH110101010

Freq. Drift -25 - +25 kHz

Drift Rate -20 - +20 kHz/50us

DH310101010



DH510101010



5) Bluetooth transmitter specication



2. PERFORMANCE



Item Spec. BER=0.1% Min Typ. Max Unit

Sensitivity

(Single Slot Packet)

DH1

PRBS9

Input power @BT_w

- - -70 dBm

Sensitivity

(Multi Slot Packet)

DH5

PRBS9

Input power @BT_w

- - -70 dBm

C/I Performance*

DH1

PRBS9Input power @BT_i

C/I@Co-Channel

-60dBm @ BT- 11

dB

C/I @1MHz

-60dBm@ BT- 0

C/I @2MHz

-60dBm@ BT- -30

C/I @≥3MHz

-67dBm@ BT-40 -37

C/I @Image

-67dBm@ BT- -9

C/I @ Image± 1MHz

-67dBm@ BT- -20

Blocking Performance

DH1

PRBS9

Input power @CW

30M ~2 GHz-67dBm@ BT

-10 -

dBm

2 ~ 2.4 GHz

-67dBm@ BT-27 -

2.5 ~ 3 GHz

-67dBm@ BT-27 -

3 ~ 12.75 GHz

-67dBm@ BT-10 -

6) Bluetooth receiver specication



2. PERFORMANCE



Intermodulation

Performance

DH1

PRBS9

Input power @CW_i

Δf = +5MHz (CW_i)

Δf = +10MHz (BT_i)

-64dBm@ BT_w

-39 - dBm

Δf = -5MHz (CW_i)

Δf = -10MHz (BT_i)

-64dBm@ BT_w

-39 - dBm

Maximum Input LevelDH1

PRBS9

Input power @BT_w

- -20 - dBm



2. PERFORMANCE



Item Specification

Transmit Frequency 2400 MHz ~ 2483.5 MHz ( CH1~CH13)

Tx Power Level ≤ 20dBm under (Europe), ≤ 30dBm under (USA)

Frequency Tolerance within ±25 PPM

Chip clock Frequency

Tolerancewithin ±25 PPM

Spectrum Mask≤ -30 @ fc-22MHz< f <fc-11MHz and fc+11MHz< f <fc+22MHz

≤ -50 @ f < fc-22MHz and f > fc+22MHz

Power ramp on/off time ≤ 2us

Carrier Suppression ≤ -15dB

Modulation Accuracy

(Peak EVM)≤ 35%

Spurious Emissions

< -36 dBm @ 30MHz ~ 1GHz

< -30 dBm above @ 1GHz ~ 12.75GHz

< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

Rx Min input Sensitivity ≤ -76dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%

Rx Max input Sensitivity ≥ -10dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%

Rx Adjacent Channel

Rejection

≥ 35dB @FER ≤ 8%,

interference input signal -70dBm@fc±25MHz(11Mbps)

7) WLAN 802.11b transceiver specication



2. PERFORMANCE



Item Specification






Spectrum Mask

≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz)

≤ -28 @ ±20MHz offset (11MHz ~ 20Mhz)


Transmitter constellation error

(rms EVM)≤ -5dB

Spurious Emissions

< -36 dBm @ 30MHz ~ 1GHz


< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

Rx Min input Sensitivity

PER ≤ 10%

-82dBm@6Mbps, -81dBm@9Mbps, -79dBm@12Mbps


-66dBm@48Mbps, -65dBm@54Mbps

Rx Max input Sensitivity ≥ -20dBm(6,9,12,18,24,36,48,54Mbps) @ PER ≤ 10%

Rx Adjacent Channel

Rejection

PER ≤ 10%,

ACR ≥ 16dB@6Mbps, ACR ≥ 15dB@9Mbps,

ACR ≥ 13dB@12Mbps, ACR ≥ 11dB@18Mbps,

ACR ≥ 8dB@24Mbps, ACR ≥ 4dB@36Mbps

ACR ≥ 0dB@48Mbps, ACR ≥ -1dB@54Mbps

※ ACR shall be measured by setting the desired signal's strength 3 dB

above the rate-dependent

sensitivity specified in min input sensitivity

8) WLAN 802.11g transceiver specication



2. PERFORMANCE



9) WLAN 802.11n transceiver specication

Item Specification






Spectrum Mask

≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz)



Transmitter constellation error

(rms EVM)

≤ [email protected], ≤ -10dB@13Mbps, ≤ [email protected],

≤ -16dB@26Mbps, ≤ -19dB@39Mbps, ≤ -22dB@52Mbps,

≤ [email protected], ≤ -28dB@65Mbps

Spurious Emissions

< -36 dBm @ 30MHz ~ 1GHz


< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

Rx Min input Sensitivity

PER ≤ 10%

[email protected], -79dBm@13Mbps, [email protected]


[email protected], -64dBm@65Mbps

Rx Max input Sensitivity ≥ -20dBm(6.5,13,19.5,26,39,52,58.5,65Mbps) @ PER ≤ 10%

Rx Adjacent Channel

Rejection

PER ≤ 10%,

ACR ≥ [email protected], ACR ≥ 13dB@13Mbps,

ACR ≥ [email protected], ACR ≥ 8dB@26Mbps,

ACR ≥ 4dB@39Mbps, ACR ≥ 0dB@52Mbps

ACR ≥ [email protected], ACR ≥ -2dB@65Mbps

※

ACR shall be measured by setting the desired signal's strength3 dB above the rate-dependent

sensitivity specified in min input sensitivity



2. PERFORMANCE



10) GPS receiver specication

11) Current consumption

** Test condition for Standby current consumption should be as below.

: Measurement time 1hr, with Agilent & CMT JIG

Item Spec.

Sensitivity Test Success rate ≥ 60% @ -154 dBm

Item Specification

WCDMA GSM

1. Sleep Mode Under 7mA Under 7mA

2. Sleep : connector Ear jack Under 7mA Under 7mA

3. Current(Sleep & Idle AVG) Under 10mA @ DRX 7 Under 10mA @ P.P 5

4. BT Connected idle Under 15mA Under 15mA

5. Talk Mode

- Max Pwr

Under 600mA @ Avg - Tx 10dBm

Under 300 mA @ Avg

GSM LVL 5 under 300 mA @ Avg

6. Power Off Mode under 500uA Under 500 uA

7. Backup Battery under 5uA under 5uA



2. PERFORMANCE



BAR WCDMA

GSM/DCS/PCS RSSI RSCP

5 Over -85 ±2dBm Over -88 ±2dBm Over -91 ±2dBm

5 4 -86 ±2dBm -89 ±2dBm -92 ±2dBm

4 3 -90 ±2dBm -93 ±2dBm -96 ±2dBm 3 2 -96 ±2dBm -99 ±2dBm -100 ±2dBm

2 1 -100 ±2dBm -103 ±2dBm -104 ±2dBm

1 0 -107 ±3dBm -109 ±3dBm -106 ±3dBm

Standby (WCDMA)

Over 350 Hours Under 4.5mA DRX 7 @ BATT Capacity : 3140mAh

12) RSSI indicator (Based on Cell power)

13) Current consumption

14) Charging hour

Under 4 hour (3140mAh battery, 1.2A TA)



2. PERFORMANCE



Battery Bar Specification

BAR 20 (Full) 98% over

remain%

BAR 20 --> 19 98% ◊ 97%

BAR 19 --> 18 93% ◊ 92%

BAR 18 --> 17 88% ◊ 87%

BAR 17 --> 16 83% ◊ 82%

BAR 16 --> 15 78% ◊ 77%

BAR 15 --> 14 73% ◊ 72%

BAR 14 --> 13 68% ◊ 67%

BAR 13 --> 12 63% ◊ 62%

BAR 12 --> 11 58% ◊ 57%

BAR 11 --> 10 53% ◊ 52%

BAR 10 --> 9 48% ◊ 47%

BAR 9 --> 8 43% ◊ 42%

BAR 8 --> 7 38% ◊ 37%

BAR 7 --> 6 33% ◊ 32%

BAR 6 --> 5 28% ◊ 27%

BAR 5 --> 4 23% ◊ 22%

BAR 4 --> 3 16% ◊ 15%

BAR 3 --> 2 13% ◊ 12%

BAR 2 --> 1 8%◊

7%BAR 1 --> 0 3% ◊ 2%

Low Battery Pop-up 4% ~ 15% : One Time popup (No call)

Critical Low Battery Pop-up 0% ~ 3% : Every Level change popup (No call)

Power Off 1%

15) Battery indicator



2. PERFORMANCE



2.6 D686 Figures



3. TROUBLE SHOOTING



3. TROUBLE SHOOTING

3.1 WCDMA Rx Part

3.1.1 WCDMA_B1/B2/B5/B8 Rx

Rx TEST SETUP

- DL Channel : 10700 / 9800/ 44407 / 3013

- Sector Power(dBm) : -23 /-23 /-23.5 / -23.5

1. Check DC Power Supply circuit

START

2. Check MT6162 XO

3.Check RF Signal path

Re download S/W & Cal

* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form.



3. TROUBLE SHOOTING



TOP Side

MT6162(U101)

SKY77589 (U102)

DPX(FL106) B8

DPX(FL102) B2

DPXB1 (FL105)

DPX B5 (FL103)



3. TROUBLE SHOOTING



START

No

DC Power Supply Circuit is OK See Next page to Check XO Circuit

Yes

Check TP1(C109)+1V8_VRF_MTK is OK?

The Problem may be Logic part

Refer to Logic troubleshoot

The Problem may be Logic partRefer to Logic troubleshoot



No

No

Yes


Yes

Check TP3(C118)+2V8_VTCXO_MTK is OK?

3.1.1.1 Checking DC Power supply circuit



3. TROUBLE SHOOTING



TOP Side

MT6162(U101)

TP2: C103(+2V85_VRF_MTK )

TP1 : C109(+1V8_VRF_MTK )

TP3: C118(+2V8_VTCXO_MTK )

C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2

REFCLK1REFCLK2REFCLK3

VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP3

TP2

TP1



3. TROUBLE SHOOTING



START

YES

Replace Main B/D

NO

Check TP1(C114)Is it 26MHz?

XO circuit is Ok . See next page

to check RF signal path.



YES

NO

Is it similar ?

Replace U801 and then

check TP1(C122)

3.1.1.2 Checking MT6162 XO circuit



3. TROUBLE SHOOTING



TOP Side

C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2


VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP1

MT6162(U101)

TP1 : C114(MAIN_CLK_26MHz)



3. TROUBLE SHOOTING



Check TP1(L104) at U102Check if there is any major difference referring

To Figure 3.1.1(b). Is any signal detected at thatpoint?

Check TP2 at U102Check if there is any major difference referringTo Figure 3.1.1(c). Is any signal detected at that

point?

Is any signal detected atthat point?

Check TP3(R103),TP4(R104),TP5(R105),at U102. Is any DC signal detected

at that points?

START

PAM is OK. See next page to check DPX

Replace U102

Check anything

Check anything



Yes

Yes

Yes

Yes

No

No

No

No

3.1.1.3 Checking RF signal path(PAM)



3. TROUBLE SHOOTING



TOP Side

BOT Side

SKY77589(U102)

TP2(B5): C115

TP2(B1): C163

TP2(B8): C117

TP2(B2): C113

TP3:R103TP4:R104

TP5:R105

TP1:L104



3. TROUBLE SHOOTING



L113

DNI

C117 100p

C115 100p

L110

12n

L112

12n

C113 100pTRX_B2_G1900

TRX_B5_G850

TRX_B8_G900

TP2(B5)

TP2(B2)

TP2(B8)

C128

22u

C127

1n

U102

16

15

1 4

1 3

1 2

1 1

1 0

17

9

8

7

6

4

3

2 8

1

44

43

42

41

40

39

38

3 7

3 6

3 5

32

33

34

2 4

2 3

22

29

30

31

18

21

2 5

20

2 6

19

2 7

5

2GND2

GND5

G N D 1 1

TRX1

A N T

TRX2

G N D 1 0

TRX3

VRAMP

PGND3

PGND2

PGND1

TRX4

T R X 5

T R X 6

PGND6PGND5PGND4

P G N D 7

P G N D 8

P G N D 9

PGND10PGND11PGND12

PGND13PGND14PGND15PGND16

GND1

G N D 1 2

GND3GND4

GND6

GND7GND8

T X

_ H B

_ I N

TXEN

T X

_ L B

_ I N

B S 2

B S 1

V B A T T

V C C

GND9MODE

C126

6.8p

C111

0.5pL108

100n

L104 2.2n

1KR105

R104 1K

R103 1K

VBATT

ANT_SEL0

ANT_SEL1

ANT_SEL2

TRX_B1

TP3

TP2(B1)

TP4

TP5

TP1



3. TROUBLE SHOOTING



Figure 3.1.1 (b)

Figure 3.1.1 (c)



3. TROUBLE SHOOTING



Check TP1 at DPXCheck if there is any major difference referringTo Figure 3.1.1(b) Is any signal detected at that

point?

START

All WCDMA_B1/B2/B5/B8 Rx check is complete.

If the phone sill do not work ,replace main board

Check anything point

Replace FL103

Yes

Yes


No

No

3.1.1.4 Checking RF signal path (FEM)



3. TROUBLE SHOOTING



TOP Side

DPX (FL103) B5

DPX(FL105) B1

DPX(FL106) B8DPX(FL102) B2

TP1(B5): L121

TP1(B1): C160

TP1(B8): L132TP1(B2): L137

FL103

881.5MHz

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

L122

5.6nC150

18n

L121 6p

TRX_B5_G850

B5 TRx / G850 Rx

TP1(B5): L121



3. TROUBLE SHOOTING



DNI

C163 L128

2.7n

C160 8.2p

FL105

2140MHz

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

TRX_B1

B1 TRx

TP1(B1): C160

L133

6.8n

L132 3.9n FL106

942.5MHz

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

DNI

C173

TRX_B8_G900

B8 TRx / G900 Rx

TP1(B8): L132

L117

DNI

C137 100p

FL102

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

C139

2.2n

TRX_B2_G1900

B2 TRx / G1900 Rx

TP1(B2): L137



3. TROUBLE SHOOTING



Figure 3.1.1 (b)

Figure 3.1.1 (b)



3. TROUBLE SHOOTING



3.2 WCDMA Tx Part

3.2.1 WCDMA_ Tx B1/B2/B5/B8

* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form.

WCDMA B1/B2/B5/B8 Tx TEST SETUP

- Test Channel : 10700 / 9800/ 44407 / 3013

- Sector Power : -55 dBm

1. Check DC Power Supply Circuit

START

2. Check MT6162 XO

4. Check DPX

5. Check PAM


3. Check PA



3. TROUBLE SHOOTING



TOP Side

MT6162(U101)

SKY77589 (U102)

DPX(FL106) B8

DPX(FL102) B2

DPXB1 (FL105)

DPX B5 (FL103)



3. TROUBLE SHOOTING




START

No


Yes






No

No

Yes


Yes




3. TROUBLE SHOOTING



TOP Side

MT6162(U101)




C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2


VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP3

TP2

TP1



3. TROUBLE SHOOTING




START

YES

Replace Main B/D

NO


XO circuit is Ok . See next pageto check RF signal path.



YES

NO

Is it similar ?


check TP1(C122)



3. TROUBLE SHOOTING



TOP Side

C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2


VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP1

MT6162(U101)




3. TROUBLE SHOOTING



START

No

No

No

Replace U103/U104

Yes

Yes

Yes

Check TP1 at U103/U104Check if there is any major difference referring

To Figure 4.2.1.4 Is it similar ?

Check TP2 at U103/U104Check if there is any major difference referring


Check TP3 at U103/U104Whether it is higher than 1.5V


PAM circuits OK See next page


3.2.1.3 Checking B1 / B2 / B5 / B8 TX PA



3. TROUBLE SHOOTING



TOP Side

PAM(U103)B1/B5

PAM(U104)B2/B8

TP2(B5): L124

TP3(B2/B8): C154

TP3(B1/B5): C135TP2(B1): C166

TP1(B1): L136

TP2(B8): L134

TP2(B2): C140

TP1(B2): L135

TP1(B5): C152

TP1(B8): C161



3. TROUBLE SHOOTING



C181

DNI

L129

8.2n

2

1

C164 33p

1 2

C166

8.2n

2

1

DNI

C180

C 1 3 3

1 0 0 n

L123

DNI

U103

1 5

1314

10 56

412

7

3

8

11

1

9

2RFIN_LB

GND1

VEN_LB

RFOUT_HB

CPL_OUT

VBATT

VEN_HB

VCCRFIN_HB

VMODENCCPL_IN

RFOUT_LBGND2

P G N D

C 15 1 1. 8n

C146

100p

2 . 2

u

C 1 3 2

100p

C145 C144

100p

VBATT

+3V4_VWPAM_MTK

L124

1p

R 1 1 1

4 9

. 9

C135

0.1u

L 13 6 2 .2 n

3GTX_B5

PA_ON_B1_ENPA_R0

PA_ON_B5_EN

3GTX_B1

TP3(B1/B5)TP2(B5)_RF out

TP2(B1)_RF out

TP1(B5)_RF IN

TP1(B1)_RF IN

DNI

C179

L135 1.5n

C141

5.6n

L134 15p

C140 12p

L118

0.5p

C178

DNI

C 1 5 8

1 0 0 n

C169

100p

C167

100p

C168

100p

VBATT

+3V4_VWPAM_MTK

U104

1 5

1314

10 56

412

7

3

8

11

1

9

2RFIN_LB

GND1

VEN_LB

RFOUT_HB

CPL_OUT

VBATT

VEN_HB

VCCRFIN_HB

VMODENCCPL_IN

RFOUT_LBGND2

P G N D

C174

22n

C175

18n

C156

2.2u

27

R108

27

R109

36

R110

22p

C154

1

2

C134

2.2u1

2

3GTX_B2

3GTX_B8PA_ON_B8_EN

PA_ON_B2_ENPA_R0

PDET

TP3(B2/B8)

TP2(B8)_RF out

TP2(B2)_RF out

TP1(B8)_RF IN

TP1(B2)_RF IN



3. TROUBLE SHOOTING



Figure 3.2.1.4

TP1_RF IN

TP2_RF out



3. TROUBLE SHOOTING



3.2.1.4 Checking RF signal path (DPX)

Figure 3.1.1 (b)

Check TP1 at DPXCheck if there is any major difference referring

To Figure 3.1.1(b) Is any signal detected at thatpoint?

START

All WCDMA_B1/B2/B5/B8 Rx check is complete.

If the phone sill do not work ,replace main board


Replace FL/102/103/105/106

Yes

Yes


No

No



3. TROUBLE SHOOTING



TOP Side

DPX (FL103) B5

DPX(FL105) B1

DPX(FL106) B8DPX(FL102) B2

TP1(B5): L121

TP1(B1): C160

TP1(B8): L132TP1(B2): L137

FL103

881.5MHz

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

L122

5.6nC150

18n

L121 6p

TRX_B5_G850

B5 TRx / G850 Rx

TP1(B5): L121



3. TROUBLE SHOOTING



DNI

C163 L128

2.7n

C160 8.2p

FL105

2140MHz

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

TRX_B1

B1 TRx

TP1(B1): C160

L133

6.8n

L132 3.9n FL106

942.5MHz

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

DNI

C173

TRX_B8_G900

B8 TRx / G900 Rx

TP1(B8): L132

L117

DNI

C137 100p

FL102

75

8

4 92

3

16 ANT RX1

TX

GND1GND5GND2

RX2

GND3 GND4

C139

2.2n

TRX_B2_G1900

B2 TRx / G1900 Rx

TP1(B2): L137



3. TROUBLE SHOOTING



3.2.1.5 Checking RF signal path (PAM)


To Figure 3.1.1(b). Is any signal detected at thatpoint?

Check TP2 at U102Check if there is any major difference referringTo Figure 3.1.1(b). Is any signal detected at that

point?



at that points?

START


Replace U102

Check anything

Check anything



Yes

Yes

Yes

Yes

No

No

No

No



3. TROUBLE SHOOTING



TOP Side

BOT Side

SKY77589(U102)

TP2(B5): C115

TP2(B1): C163

TP2(B8): C117

TP2(B2): C113

TP3:R103TP4:R104

TP5:R105

TP1:L104



3. TROUBLE SHOOTING



L113

DNI

C117 100p

C115 100p

L110

12n

L112

12n

C113 100pTRX_B2_G1900

TRX_B5_G850

TRX_B8_G900

TP2(B5)

TP2(B2)

TP2(B8)

C128

22u

C127

1n

U102

16

15

1 4

1 3

1 2

1 1

1 0

17

9

8

7

6

4

3

2 8

1

44

43

42

41

40

39

38

3 7

3 6

3 5

32

33

34

2 4

2 3

22

29

30

31

18

21

2 5

20

2 6

19

2 7

5

2GND2

GND5

G N D 1 1

TRX1

A N T

TRX2

G N D 1 0

TRX3

VRAMP

PGND3

PGND2

PGND1

TRX4

T R X 5

T R X 6

PGND6PGND5PGND4

P G N D 7

P G N D 8

P G N D 9

PGND10PGND11PGND12


GND1

G N D 1 2

GND3GND4

GND6

GND7GND8

T X

_ H B

_ I N

TXEN

T X

_ L B

_ I N

B S 2

B S 1

V B A T T

V C C

GND9MODE

C126

6.8p

C111

0.5pL108

100n

L104 2.2n

1KR105

R104 1K

R103 1K

VBATT

ANT_SEL0

ANT_SEL1

ANT_SEL2

TRX_B1

TP3

TP2(B1)

TP4

TP5

TP1



3. TROUBLE SHOOTING



Figure 3.1.1 (b)



3. TROUBLE SHOOTING



3.3 GSM Rx Part

3.3.1 GSM850/900/DCS/PCS Rx

* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form

Rx TEST SETUP

- BCH :GSM850 / EGSM / DCS / PCS for GSM900- TCH: GSM850 / EGSM / DCS / PCS for GSM900

- Channel : 190 / 37 / 698 / 661 for GSM 900

- Sector Power : -30 dBm / -33dBm

1. Check DC Power Supply circuit

START

2. Check MT6162 XO


3. Check RF Signal path



3. TROUBLE SHOOTING



TOP Side

MT6162(U101)

SKY77589 (U102)

DPX (FL106)GSM900

DPX (FL102)GSM1900

SAW (FL101)GSM1800

DPX GSM850 (FL103)



3. TROUBLE SHOOTING




START

No


Yes






No

No

Yes


Yes




3. TROUBLE SHOOTING



TOP Side

MT6162(U101)




C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2


VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP3

TP2

TP1



3. TROUBLE SHOOTING




START

YES

Replace Main B/D

NO


XO circuit is Ok . See next pageto check RF signal path.



YES

NO

Is it similar ?


check TP1(C122)



3. TROUBLE SHOOTING



TOP Side

C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2


VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP1

MT6162(U101)




3. TROUBLE SHOOTING




Check TP1(L104) at U102Check if there is any major difference referring.

Is any signal detected at that point?

Check TP2 at U102Check if there is any major difference referring.

Is any signal detected at that point?



at that points?

START


Replace U102

Check anything

Check anything



Yes

Yes

Yes

Yes

No

No

No

No



3. TROUBLE SHOOTING



TOP Side

BOT Side

TP1: L104

SKY77589(U102)

TP2(G850): C115TP2(G900): C117

TP2(G1800): L103

TP2(G1900): C113

TP3:R103TP4:R104

TP5:R105



3. TROUBLE SHOOTING



C128

22u

C127

1n

U102

16

15

1

4

1

3

1

2

1

1

1

0

17

9

8

7

6

4

3

2 8

1

44

43

42

41

40

39

38

3

7

3

6

3

5

32

33

34

2 4

2 3

22

29

30

31

18

21

2 5

20

2 6

19

2 7

5

2GND2

GND5

G N D 1 1

TRX1

A N T

TRX2

G N D 1 0

TRX3

VRAMP

PGND3

PGND2

PGND1

TRX4

T R X 5

T R X 6

PGND6PGND5PGND4

P G N D 7

P G N D 8

P G N D 9

PGND10PGND11PGND12


GND1

G N D 1 2

GND3GND4

GND6GND7GND8

T X

_ H B

_ I N

TXEN

T X

_ L B

_ I N

B S 2

B S 1

V B A T T

V C C

GND9MODE

C126

6.8p

C111

0.5pL108

100n

L104 2.2n

1KR105

R104 1K

R103 1K

VBATT

ANT_SEL0

ANT_SEL1

ANT_SEL2

TRX_B1

TP3

TP4

TP5

TP1



3. TROUBLE SHOOTING



L113

DNI

C117 100p

C115 100p

L110

12n

L112

12n

C113 100pTRX_B2_G1900

TRX_B5_G850

TRX_B8_G900

TP2(G850)

TP2(G1900)

TP2(G900)

L102

8.2n

1.2nL1061842.5MHz

FL101

45

1

32

G1 O1IN

G2 O2

L101 1.2n

L105

5.6n

L103 10p

RX_G1800_INP

RX_G1800_INN

TP2(G1800)



3. TROUBLE SHOOTING



3.3.1.4 Checking RF Flow(SAW lter)

Check TP1(L101) for 1800 band at FL101Check if there is any major difference referring

To Figure 3.1.1(a) Is any signal detected atthat point?

START

SAW lter is OK. Replace main B/D.

Replace FL101


Yes YesTo Figure 3.1.1(b) Is any signal detected at

that point

No

No



3. TROUBLE SHOOTING



TOP Side

L102

8.2n

1.2nL1061842.5MHz

FL101

45

1

32G1 O1

ING2 O2

L101 1.2n

L105

5.6n

L103 10p

RX_G1800_INP

RX_G1800_INN

TP1

TP1: L101

SAW(FL101)



3. TROUBLE SHOOTING



Figure 3.1.1 (a)



3. TROUBLE SHOOTING



3.4 GSM Tx Part Troubleshooting

3.4.1 GSM850/900/DCS/PCS Tx

TOP Side

MT6162(U101)

SKY77589 (U102)

DPX (FL106)B8

DPX (FL102)B2

DPX (FL103)B5

DPX (FL105)B1



3. TROUBLE SHOOTING




START

No


Yes






No

No

Yes


Yes




3. TROUBLE SHOOTING



TOP Side

MT6162(U101)




C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2


VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP3

TP2

TP1



3. TROUBLE SHOOTING




START

YES

Replace Main B/D

NO

Check TP1(C114)

Is it 26MHz?





YES

NO

Is it similar ?


check TP1(C122)



3. TROUBLE SHOOTING



TOP Side

C

1 0 6

3 9 p

1

2

U101

1 B 1

C 2

D 1

E 2

F 1

G 2

H 1

J 2

K 1

L 2

A12

B11 A10

B9

A8B7

A6

B5

A4B3 A2


VDDXO

NC4

XO2XO1/REFIN

VTUNE

CLK_MODEVSUP2b

GND1

V S U P 1

V D D

_ 1 8

V S U P 2 a

V D D

_ 2 8 b

C L K

D A T A 0

D A T A 1

V I N T

E N

G N D 2

P G N D

1 u

C 1 0 8

1

2

C112 1n

1nC114

C118 0.1u

C 11 9 1 u

C 1 0 9

1 u

1

2

C 1 0 3

1 u

1

2

C 1 0 5

1 u

1

2

+ 2 V 8 5

_ V R F

_ M T K

+2V8_VTCXO_MTK

SYSCLK

B S I 1

_ C L K

B S I 1

_ C S 1

B S I 1

_ D A T A

B S I 1

_ C S 0

+ 1 V 8

_ V I O

_ M T K

+ 1 V 8

_ V R F

_ M T K

MAIN_CLK_26MHz

TP1

MT6162(U101)




3. TROUBLE SHOOTING




START

No

No

No

Replace U102

Yes

Yes

Yes



Check TP2 at U102Check if there is any major difference referring



at that points?


PAM circuits OK See next page.




3. TROUBLE SHOOTING



TOP Side

BOT Side

TP1: L104

PAM(U102)

TP2(850/900): C176

TP2 (DCS/PCS): C177

TP3:R103

TP4:R104

TP5:R105



3. TROUBLE SHOOTING



100pC177

100pC176

C128

22u

C127

1n

U102

1615

1 4

1 3

1 2

1 1

1 0

17

9

876

43

2 8

1

44434241

403938

3 7

3 6

3 5

323334

2 4

2 3

22

293031

18

21

2 5

20

2 6

19

2 7

5

2GND2

GND5

G N D 1 1

TRX1

A N T

TRX2

G N D 1 0

TRX3

VRAMP

PGND3PGND2PGND1

TRX4

T R X 5

T R X 6

PGND6PGND5PGND4

P G N D 7

P G N D 8

P G N D 9

PGND10PGND11PGND12


GND1

G N D 1 2

GND3GND4

GND6GND7GND8

T X

_ H B

_ I N

TXEN

T X

_ L B

_ I N

B S 2

B S 1

V B A T T

V C C

GND9MODE

C126

6.8p

C111

0.5pL108

100n

L104 2.2n

100pC122

DNI

C125

DNI

C130

1KR105

R104 1K

R103 1K

VBATT

100pC129

ANT_SEL0

ANT_SEL1

ANT_SEL2

TX_DCS_PCS

TX_GSM850_GSM900

TRX_B1

TP2(DCS/PCS)

TP2(850/900)

TP1

TP3

TP4

TP5



3. TROUBLE SHOOTING



3.5 Power

The main power source of D686 is provided by 1 chip which is MT6329Power ON sequence of D686 is

VBAT

DDLO

VRTC

UVLO

PWRKEY

PWRBB

PWRON

VCORE

VPROC

VIO18

VIO28/VM12_INTVA1/VA2

VM12_1/VM12_2

VUSB/VTCXO

VMC/VMCH

RESETB



3. TROUBLE SHOOTING



START

END

Check Battery connector (CN601)

Press PWR Key TP1: R706 high to low?

Battery voltage

higher than 3.6V?

Check MT6329 Core (L301)Voltage level?

Check MT6329 AP (L302)Voltage level?

Check MT6329 IO (L303)Voltage level?

Check MT6329 RTC CLOCK

Check POWER_KEY FPCB

Change or charging the Battery

L301 (Check MT6329)

L302(Check R322)

L303(Check PM8058)

R322(Check MT6577)

Change MT6329And Return to Start

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes



3. TROUBLE SHOOTING



R706 1K21

ANT701MBV625620011

FEED

Z D 7 0 1

2

1

MBV62562001 ANT7021

FEED

PWR_ON_SW_N

POWER & Lock KEY

PWR KEY(R706) TP1

1K

R61821

R620

20m

1u

C62047uC621

1 0 0 K

R 6 1 7

2

1

R 6 2 2

4 . 7

K

R623

100

47p

C618

6.8p

C619VA601

ZD602

CN601

6

4

3

2

15G1

G2

BATT_ID_PULLUP

VBATTVTREF

BATT_TEMP_ADC

BATT_ID

FGN_IC2mmFor MTK Fuel Gauge

1.2V

BATTERY CONNECTOR(CN601)



3. TROUBLE SHOOTING



D12

H12

C12

K13J13

A13

G13G12

E10

D14D13C14

B12

E12F13F12

VCORE_1VCORE_2VCORE_3

VCORE_FB

VPROC_1

VPROC_2VPROC_3

VPROC_FB

VIO18_1VIO18_2

VIO18_FB

VPA_1

VPA_2

VPA_FB

VRF18

VRF18_FB

2.2uL302

4.7uC339 1 2

4.7uL304

C336 4.7u 1 2

C333 4.7u 1 2

4.7uC332

1 2

L303 2.2u

C334 10n

D3011 2

L305 2.2u

21

C337

2.2u1

2

L301 2.2u

+3V4_VWPAM_MTK

+1V8_VIO_MTK

+1V2_CORE_MTK

+1V35_PROC_MTK

VBATT

+1V8_VRF_MTK

VAPROC_FB

Core DC/DC INDUCTOR(L301)

AP DC/DC INDUCTOR(L302)

IO DC/DC INDUCTOR(L303)



3. TROUBLE SHOOTING



Core DC/DC INDUCTOR(L301)

IO DC/DC INDUCTOR(L303)

BATTERY CONNECTOR(CN601)

AP DC/DC INDUCTOR(L302)

TOP Side

BOT Side

PWR KEY Clip

PWR KEY(R706) TP1



3. TROUBLE SHOOTING



3.6 Charging

D686 uses Switching Chaging IC for charging control. The Chaging IC(MAX8971EWP) circuit includes the charging pass transistor

detects the VDD and VBAT voltages, and its control driver. The Chaging IC(MAX8971EWP) maximum charging current is set around

1.2A.

Charging Procedure

- Supply the VCHG use a TA or u-USB cable

- The Chaging IC(MAX8971EWP) control the charging current

- Charging current ows into the main battery

Troubleshooting Check Point

- Connection of the TA or u-USB cable

- Main battery

U606

1 n

C 6 1 7

0 . 1 u

C 6 1 4

L602

1u

V B A T T

R 6 2 1

4 7 m

V C H G

_ O V P

_ I N

1 u

C 6 2 3

1 u

C 6 2 4

+ 1 V 8

_ V I O

_ M T K

C 6 1 6

1 u

C 6 2 5

4 . 7

u

2 . 2

u

C 6 1 5

2 . 2

u

C 6 2 6

4 . 7

K

R 6 1 9

V C H G

_ L D O

_ 4 V 9

U606

C5

D2

D3

D1

A5

B5

A1

C1

B1

A4 A3

A2

D5

D4

C4

C3

C2

B2

B3

B4 I2CIN

IRQB

LX2

BST

GND

SCL

SFO

AVL

PG2VICHG

CS

LX1

BYP

PG1

THM

BAT

DC1

PVL

DC2

SDA

C 6 2 2

1 u

1

2

I2C_SENSOR_SDAI2C_SENSOR_SCL

CHARGER_IRQ_B

10V

U606(Charger IC)



3. TROUBLE SHOOTING



START

Check the Connectionof uUSB and battery

Change the Charger IC ( U606 )

Is the uUSB Cable voltage 4.9V (or 5.0V)

Yes

Connection OK?

Connection OK?

Is it charging properlyAfter turning on?

Yes

Yes

Yes

Change I/O connector

No

Change TA(or uUSB Cable)

END

END

No

No

No

Change the Main PCB



3. TROUBLE SHOOTING



3.7 USB

START

Check the Connectionof uUSB

Main PCB & Sub FPCB Connection OK?

Yes

Connection OK?

Is the signal ok for USB+ & - ?

Yes

Yes

Change I/O connector( SUB FPCB CN10000)

No

Check Connector( SUB FPCB CN10001)

Change Sub FPCB

No

No

Change the Main PCB

END

CN10000

11

10

9

5

4

3

2

1

8

7

6

GND

CN1001

1615

1714

1813

1912

2011

2110

229

238

247

256

265

274

283

292

301

VCHG_OVP_IN

LED_RLED_GLED_B

MIC_N

USB_IDUSB_DNUSB_DP

SPK_LP

VMIC

MIC_P

KROW1_FKCOL1_F

SPK_LN

SPK_RNSPK_RP



3. TROUBLE SHOOTING



MIC1MIC1

MIC2MIC2

MT6575

(AP)

MT6620(Connectivity)

HP L/R

HS

Headphone

AMP

EAR_L/R

Dual SPK

RCV

3.5 pi

FM RADIO

SPK Boost AMP

SPK Boost AMP

3.8 Audio

3.8.1 Overview

Audio Block Diagram



3. TROUBLE SHOOTING



3.8.2 Speaker

It’s trouble shooting guide for no sound case.

Speaker control signals are generate by MT6577(U201), TPA2015(U501,U502)If low level volume or breaking the sound,change speaker module

START

Check the speaker.And reconnect Speaker module

Change Main Board

Change Speaker Module?

Hear the sound to the Speaker?

Yes

Yes

YesCheck Lower FPCB and Main PCB.(C508,C507,C506,C505,

FB504,FB502,FB501,FB503,L1001~L1004)Speaker Sound OK?

No

No

No

END



3. TROUBLE SHOOTING



C507,508

C506,505

U502

U501

FB502,504

FB501,503

Speaker Module

L1001~L1004



3. TROUBLE SHOOTING



33nL1002

21

L1004 33n

21

33nL1003

21

L1001 33n

21

ANT100021 FEED

ANT100001

FEED

ANT100031

FEED

ANT100011

FEEDSPK_LP

SPK_LN

SPK_RN

SPK_RP

SPEAKER1 SPEAKER2L1001,L1002 L1003,L1004

0 C511

VBATT

C504

10u

DNIC512

C503

10u

C516

33p

C515

33p

60FB504

FB502 60

L502

2.2u21

U502

D1

D2

D4

D3

B4

A4

B2B3

A3 A2 A1

C4

C3

B1

C1

C2

G N D 2

OUT-

OUT+

END

G N D 3

P V D D

P V O U T

S W

AGCGAIN

G N D 1

V B A T

IN-

ENB

IN+

G N D 4

C507 47n

47nC508

HPH_LSPK_LP

SPK_LN

SPK_AMP_L_EN

C507,508FB502,504

VBATT2.2u

L501

21

C502

10u

C509 0

10u

C501

60FB501

FB503 60

33p

C513

33p

C514

U501

D1

D2

D4

D3

B4

A4

B2B3

A3 A2 A1

C4

C3

B1

C1

C2

G N D 2

OUT-

OUT+

END

G N D 3

P V D D

P V O U T

S W

AGCGAIN

G N D 1

V B A T

IN-

ENB

IN+

G N

D 4

47nC506

C505 47n

C 51 0 D NI

HPH_R

SPK_RN

SPK_RP

SPK_AMP_R_EN

C506,505

FB501,503



3. TROUBLE SHOOTING



3.8.3 Receiver

Receiver control signals are generate by MT6575(U201), Receiver(CN501)

START

Check the Receiver soundandcheck receiver wire.

Change Main Board

Receiver Contact is OK?

Hear the sound to the Receiver?Yes

Yes

Yes

Yes

Change Receiver Module.Can you hear a sound?

Check main board part FB505,FB506

No

No

No

No

END

Re-assemble the Receiver



3. TROUBLE SHOOTING



In case of No Receiver sound, not only Receiver fault but Mic fault.

You must check rst voice recording test. After voice recording you can hear a recording sound, receiver path or parts is something

wrong.

TOP Side

Check Contact Status

FB505, FB506



3. TROUBLE SHOOTING



3.8.4 Main Mic

Main Mic located on Lower FPCB.

It’s operating voice call(except speakerphone), voice recording, camcorder recording

START

Check the Mic signal by test modeor Voice recording.

Change Main Board

Reconnect or change FPCB connector.Voice signal OK?

Check Mic hole & rubber tomake the voice signal?

Yes

Yes

Yes

Yes

Check parts about Mic BiasMic works well?

Change MIC10000 or MT6577(U201).Mic works well?

No

No

No

No

END



3. TROUBLE SHOOTING



Check Main Mic hole.

Check C250, C252 and VMIV voltage level (C251)

TOP



3. TROUBLE SHOOTING



3.8.5 2nd Mic2nd Mic located on Main PCB Top Side.

It’s operating handset voice call and speakerphone.

START

Check the Mic signal by test mode(2nd loop back or Camcorder test)

Change Main Board

Check parts about Mic BiasMic works well?

Check Mic hole & rubber tomake the voice signal?

Yes

Yes

Yes

Yes

Change Mic(MIC501)

Mic works well?

Change MT6577(U201).Mic works well?

No

No

No

No

END



3. TROUBLE SHOOTING



2nd Mic Hole located on Main PCB Top Side..It’s operating handset voice call and speakerphoneIn case of Test menu, loopback 2nd Mic test and Camcorder recording.

2nd Mic Hole

TOP

Check C255, C256, C535 and VMIC voltage level (C251)



3. TROUBLE SHOOTING



3.8.6 Ear-Mic Trouble Shooting

Ear MIC control signals are generate by MT6575(U200)

Case A. Disable detected headset insert.

START

Didn’t display headset icon and play sound viaspeaker although headset insert

Change Main Board

Check the left signal and detection line shortwhen headset inserted?

Change Ear Jack Connector.Sound play via headset?

Yes

Yes

Yes

Change MT6577(U201).Mic works well?

No

No

No

END



3. TROUBLE SHOOTING



Case A. Disable detected headset insert.

Ear JackConnector

TOP

Check Part about earjack detect (FB508, R507, R516)



3. TROUBLE SHOOTING



Case B. No Sound from Headset

START

Didn’t play sound via headsetalthough headset insert

Change Main Board

Check TPA6136(U503) and peripheralcircuits Works well?

Change Ear Jack Connector.Sound play via headset?

Yes

Yes

Yes

Check MT6577(U201). Works well?

No

No

No

END



3. TROUBLE SHOOTING



Case B. No Sound from Headset

Check the input power +VBATT and Gain Parameter . (C517, R505)In case of you can’t heard anything, check C518~521

Can heard sound but sound is abnormal, check C533,C534

TOP

U503

0

R502

2

1

C524

1u

C520 1u

1uC518

1uC521

C519 1u

2.2u

C517

VBATT

U503D4 D3

D2

D1

C4

B4

B3 A4

A2

B2

C1

A1

B1

C2

A3

C3

S G N D

OUTL

H P V S

S

GND

E N

CPN

CPP

V D D

INL-

HPVDD

INL+

INR+

HI-Z

GAIN

OUTRINR-

+1V8_VIO_MTK

1 0 0 K

R 5 0 5

2

R 5 0 3

D N I

2

2.2u

C523C522

1u

HPH_R

HPH_L

Headset_AMP_EN

H P

_ A M P

_ S G N D

EAR_REAR_L

U503



3. TROUBLE SHOOTING



3.9 6 AXIS Sensor

The 6 AXIS sensor is calibrated by the gyro sensor data using SW algorithm. Therefore Gyro sensor error makes the compass sensor malfunction.

R608

100K2 1

U6042

5

1 4

1

1 3

10

11

6

3 9

8

1 2

4

7

G N D 2DRDY

C S B

VDD

GND3INT2

G N D 1

SCK

VDDIO

P S

SDO S D I

I N T 3

INT1

+1V8_VIO_MTK+3V0_SENSORS_MTK

100n

C610

1

2

C609

100n1

2

I2C_COMMON_SCL

I2C_COMMON_SDA

3AXIS_INT

COMPASS_DRDY

6 AXIS SENSOR



3. TROUBLE SHOOTING



START

Check the 6 XIS sensor function

Change the main board

END

END

END

END

Change the 6 AXIS Sensor IC(U604)

6XIS -NG?

Function is OK?Yes

Yes

Yes

Yes

6 AXIS Sensor function is OK?

6 AXIS Sensor function is OK?

No

No

No



3. TROUBLE SHOOTING



BOT

U604



3. TROUBLE SHOOTING



3.10 Proximity SensorProximity Sensor is worked as below:Send Key click -> Phone number click -> Call connected -> Object moved at the sensor -> Control the screen’s on/offoperation automatically

START

Send Key click & Phone number click& Call connected

Object moved at the Proximity sensor

Change the main board

END

END

END

Check +3V_PROX_AMBIENT(TP1)& I2C_SENSOR_SDA & SCL

& PROX__INT

LCD off?Yes

Yes

Yes

Output work well?

Function is OK?

No

No



3. TROUBLE SHOOTING



TOP

Sensor Power: TP1(C607)

+3V0_SENSORS_MTK

R628

021

0

R62721

U603

9

3

54

6

72

81SDA VDD

INT SCL

GND

LEDK LEDA

LDR

NC

1 0 K

R 6 0 3

2

1

C607

2.2u1

2

+1V8_VIO_MTK

I2C_SENSOR_SDA

I2C_SENSOR_SCLPROX_INT

Sensor Power: TP1(C607)



3. TROUBLE SHOOTING



3.11 Touch Sensor

START

Reconnect Touch Module CN406

Change Main Board

Check Power+1V8_VIO_MTKTP1) / +3V0_TOUCH_MTK (TP2)

Power is OK?

Touch Woks OK ?

Yes

Yes

Yes

Yes

Check I2C Line & Signal Line (TP3 &TP4)Touch Works OK?

Change Touch ModuleTouch Works OK?

No

No

No

No

END

Change MT6329(U804)



3. TROUBLE SHOOTING



BOT

V A 4 0 4

2

1

V A 4 0 3

2

1

R412

22K

R 4 1 0

1 0 K

+1V8_VIO_MTK

+3V0_TOUCH_MTK

V A 4 0 6

CN406

65

74

83

92

101

4 . 7

K

R 4 0 8

V A 4 0 5

+1V8_VIO_MTK

C434

1u

V A 4 0 7

2

1

R 4 1 1

0

I2C_SENSOR_SDA

I2C_SENSOR_SCL Touch_Reset

TOUCH_ID

TOUCH_INT

TOUCH

TP3(VA403)TP4(VA404)

+1V8_VIO_MTK :TP1 (VA405)

+3V0_TOUCH_MTK : TP2 (VA407)

+3V0_TOUCH_MTK : TP2 (VA407)

+1V8_VIO_MTK :TP1 (VA405)

TP3(VA403) TP4(VA404)



3. TROUBLE SHOOTING



3.12 Vibrator

Vibrator signal path is MT6329(U804) -> Vibrator. Motor Type is DC Motor

START

Change Main Board

Check Power3.0V Motor Power is OK?

Yes

YesCheck Main PCB VB601 Pad.

Is it Normal?

No

No

END

Change MT6329 (U804)



3. TROUBLE SHOOTING



TOP

VB601

VB601

2

1

D 6 0 2

20

R616

R615

20

C613

1u

L601 18n

1

VA602

+3V0_VIBR_MTK

NON Q-COIN

MOTOR

VB601

MOTOR



3. TROUBLE SHOOTING



3.13 Camera

3.13.1 8M Main

8M camera control signals are generated by MT6575 (U200 : Main Chipset).

START

Check the camera Conn.And reconnect the camera

Change the Camera

Check VIO(TP1), AVDD(TP2 ),DVDD(TP3)

Camera is OK ?

Yes

Yes

Yes

Yes

Check the camera signals MCLK(TP4),MIPI_CLK(TP5), MIPI_DATA(TP6)

Camera is OK ?

No

No

No

END

Change the Main board

END



3. TROUBLE SHOOTING



BOT

+2V8_CAM_VCM

TP402

C425

2.2u

FL404

109

54637281 P1 P8

P2 P7P3 P6P4 P5

G 1

G 2

DNI

C427

DNI

C426

2.2u

C422

C419

DNI

2.2K

R406

V A 4 0 2

2.2u

C423 C424

2.2u

CN402

1312

1411

1510

169

178

187

196

205

214

223

232

241

R403 0

FL403

143

P3P2

P4P1

P 6

P 5

+1V8_CAM_VIO

I2C_COMMON_SCL

I2C_COMMON_SDA

CAM_MCLK

+1V8_CAM_VIO

CAM_RESET_N

CAM_DATA0_N_8MCAM_DATA0_P_8M

CAM_CLK_N_8MCAM_CLK_P_8M

CAM_DATA1_N_8MCAM_DATA1_P_8M

+2V8_CAM_VCM +1V2_CAM_DVDD

+2V8_CAM_AVDD

WP

8M MIPI CAMERA

MCLK: TP4(R403 or C419)

VIO: TP1(C423) AVDD: TP2(C424)

DVDD: TP3(C425)

MIPI_DATA: TP6 (FL404)

MIPI_CLK: TP5 (FL403)

MIPI_CLK: TP5MIPI_DATA: TP6

VIO: TP1

DVDD: TP3

AVDD: TP2

MCLK: TP4



3. TROUBLE SHOOTING



3.13.2 1.3M VT

1.3M camera control signals are generated by MT6575 (U200 : Main Chipset).

START

Check the camera Conn.And reconnect the camera

Change the Camera

Check VIO(TP1), AVDD(TP2 ),DVDD(TP3)

Camera is OK ?

Yes

Yes

Yes

Camera is OK ?

No

No

END

Change the Main board

END



3. TROUBLE SHOOTING



BOT

C 4 3 2

1 0 0 n

1 0 0 n

C 4 3 1

1 0 0 n

C 4 3 3

CN405

1110

129138147156165174183192201

+1V2_CAM_DVDD

+2V8_CAM_AVDD

+1V8_CAM_VIO

ZD401 ZD402 ZD403

I2C_COMMON_SCLI2C_COMMON_SDA

CAM_MCLK

CAM_DATA0_N_1.3M

CAM_CLK_N_1.3M

VT_CAM_RESET_N

CAM_CLK_P_1.3M

CAM_DATA0_P_1.3M

DVDD: TP3(C431)

AVDD: TP2(C433)

VIO: TP1(C432)

VIO: TP1

AVDD: TP2

DVDD: TP3



3. TROUBLE SHOOTING



3.14 LCD

The LCD control signals are generated by MT6329. It needs three external powers like VIO, VCI and IO. And its interface is MIPI

having three data lanes and one clock lane.

START

Press PWR keyturn the power ON

The LCD works

Change the Main Board

Disconnect and re-connectLCD Connector(CN401)

LCD display is OK ?

Is the circuit Powered ?

Yes

Yes

Yes

No

No

No

END

Change the LCD Module

Follow the Power ON Troubleshooting

Check LCD Power+3V0_LCD_VCI_MTK(TP1),+1V8_LCD_VIO_MTK(TP2),

MIPI_CLK (TP3),MIPI_DATA (TP4)

LM3639(U404) output LEDA(TP5)



3. TROUBLE SHOOTING



+1V8_LCD_VIO_MTK

FL402

1 0

9

8

4

7

3 6

2

5

1

C 4 1 0

1 u

C 4 1 1

1 u

+3V0_LCD_VCI_MTK

TP401

CN401

1312

1411

1510

169

178

187

196

205

214

223

232

241

DDVDL_-5V5

DDVDH_+5V5

FL401 6

5

3241

D1

D4 D2

D3

G 1

G 2

VA408

2

1

VA409

2

1

VA410LCD_MIPI_CLK_N

LCD_MIPI_DATA0_N

LCD_MIPI_DATA1_N

LCD_PWM

LCD_MAKER_ID

LCD_RESET_N

LCD_MIPI_CLK_P

LCD_MIPI_DATA1_P

LCD_MIPI_DATA0_P

LED_C1

LEDA

LED_C2

Power for Analog(3.0V)VIO: TP2 (C410)


MIPI_DATA: TP4(FL402)

VCI: TP1 (C411)

L403

1u

1 0 0 K

R 4 0 5

R 4 0 4

1 0 0 K

V A 4 0 1

10u

L402

C415

10u

D401

1u

C414

10uC416

U404

B4

C1

A3

A4 E3

D3

E2

E1

B3

B2

A1

D2

A2

E4

B1D4

D1

C4

C3

C2 TX

STROBE

VIN

BLED1

PWM FLED2

S W B

OUTF1

SCL

FLED1

OUTF2

S W F 2

BLED2

OVP

SDA

G N D 3

G N D 1

S W F 1

EN

G N D 2 LD401

2

1

I2C_COMMON_SCLI2C_COMMON_SDA

LCD_PWM

FLASH_LTD

VBATT

LED_C1

LEDA

LED_C2FLASH_EN

LCD_BL_EN

Width : 0.3mm

Width : 0.3mmWidth : 0.3mm

LED_OUT:TP5(C414)



3. TROUBLE SHOOTING



BOT

LEDA: TP5 (C414)

VIO: TP2 (C410)

VCI: TP1 (C411)MIPI_DATA: TP4(FL402)




3. TROUBLE SHOOTING



3.15 BT/Wi

BOT

TOP

TP1

TP3TP2

L

J

14

1213

24

10 6

5

C832

V A 7 0 6

ANT804

SC215

C330

F B 8 0 3

C 8 4 6

FB802

C424

R 4 1 0

V A 7 0 1

R627

L 3 0 5

R 8 1 5

C 8 0 2

328

L302

C 4 3 4

C 8 4 0

L807

U804

T P 4

0 2

L 3 0 1

C339

Z D 7 0 3

FL803

L809

R 3 0 2

X801

R403

VA402

C426

R320

C419

C 8 0 7 VA405

C263

C806

0 6

C 8 7 1

R 7 0 8

FL404

C 8 4 5

C868

V A 7 0 5

C 8 2 6

R812

VA406

TP801

R411

C837

8 0 1

C 8 2 3

R 8 1 7

T

F L 4 0 3

C N

4 0 2

C333

C831

R 4 1 2

R 8 1 4

R 3 0 1

C331

FB801

C 8 5 2

L805

C 8 4 1

C808 C 8 0 9

C332

VA403

L812

BAT700 C 7 1 8

C262

C872

R 7 0 5

C422

C427

C836

C 8 4 7

C843

L 3 0 3

C873

R 4 0 6

C425

J 5 0 1

C336

C 8 4 8

C609

C 8 1 3

ZD801

V A 7 0 3

C822

R408

C 8 5 1

C 8 0 3

C322

VA407

C 8 2 7

U803

C801 C 7 0 9

C 8 7 0

C817

VA404

C N 4 0 6

TP812

V A 7 0 4

R 8 1 6

C 8 5 5

V A 7 0 2

C 7 1 0

C804

R 7 1 5

C869

C810LD401

C828

C423

TP810

R813

TP4

TP5

TP6



3. TROUBLE SHOOTING



A N T 8 0 4

M B V 6 2 5 6 2 0 0 1

1

F E E D

DNI

L812

1

2

C843

DNI

1

2

C871 100pC840 1.5n

21

FL803

3

2

1IN

G N DOUT

C873

DNI1

2

R 8 0 4

1 0 K

2

1

1 0 K

R 8 0 5

C833 100p 1 2

C872

DNI1

2

C841 1n

21

100pC850 1 2

DNI

C853

1

2C854

DNI1

2

L810

DNI

2

1

FL802

4

3

5 2

6

1

O U T 1 VCTL1

GNDIN

O U T 2

VCTL2

8.2p

C838

C844

8.2p

WIFI_TX

ANTSEL_1

ANTSEL_0

WIFI_RX_BT_TRX

Close to Pin A3

Close to Pin A5SPDT for BT&Wi-Fi

TP6TP5

TP3TP1

TP4

TP2

1

3

4

2



3. TROUBLE SHOOTING



1 u

C 8 4 9

C851

100n1

2

C 830 1 u

C839

1u

C835

100n

C 829 1 u

100n

C834

C 8 4 6

1 0 0 n

1 0 p

C 8 4 5

1 0 p

C 8 4 7

1 0 p

C 8 4 8

0.1u

C836

0.1u

C837

120FB802

T P 8 1 3

T P 8 1 2

T P 8 1 1

TP810

1U801

L12

N12

M11

N11

M10

H11

H12

D8

H8

J11

J12

L13

M13

N13

N10

N9

L10

L11

J13

H13

F13

G13

L5

L7

B12

A11

C11

A12

C12

C13

G7

G8

G9

F9

F4

A13

B13

E12

H10

E13

D13

B11

E8

A8

B8

B5

B9

A9

G 2

D 7

D 6

C 7

C 6

D 9

M 9

J 3

H 2

J 2

L 9

J 9

E 1

C 2

A 1

G 1

C 4

E 4

E 6

E 7

K 7

F 5 E

3 C 5

E 5

D 4

E 2

G 3

B 1

B 3

C 3

H 4

K 8

M 8

N 8

H 5

M 7

J 8 G 4

L 8 G 5

A 4

A 5

A 3

C 1

D 1

R X

_ 5 G_ I N

T X 5 G

_ O U T

T X 2 G

_ O U T

R X 2 G

_ I P

R X 2 G

_ I N

E E D I

E E S K

E E C S

C L K

_ D C

S D 1_ D A T 1

S D 1_ D A T 2

S D 1_ D A T 3

S D 1_ C M D

S D 1_ C L K

S D 1_ D A T 0

A V S S 3 3_ B A

A V S S 3 3_ P A

_ 1

A V S S 3 3_ P A

_ 2

A V S S 1 3_ W I F I S X

_ 1


_ 2

A V S S 1 3_ B B

A V S S 1 3_ P L L_ 1

A V S S 1 3_ P L L_ 2

A V S S 1 3_ T R X 2 G 5 G

G N D 1

G N D 2

A V D D 1 3_ P L L_ 1

A V D D 1 3_ P L L_ 2

A V D D 1 3_ B B

A V D D 1 3_ T R X 5 G

A V D D 1 3_ W I F I S X

_ 1

A V D D 3 3_ P A

A V D D 3 3_ B A


_ 2

D V D D I O

_ S D I O 1

A N T S E L_ 4

A N T S E L_ 3

A N T S E L_ 2

A N T S E L_ 1

A N T S E L_ 0

W L A N

_ A C T

A V S S 1 3_ B T S X A F E

_ 1


_ 2


_ 3


_ 4

N C 3

AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTSX_1 AVSS13_BTSX_2GND3NC1OSC1_GPSSYNCECLOCKDUTY_LOSSRF_INN_GPSRF_INP_GPSGPIO1_25GPIO1_24GPIO1_26GPIO1_27GPIO1_28 AVDD28_OSC AVDD13_SXIF_GPS AVDD13_LNA_GPS AVSS28_OSC AVSS13_RX_GPS AVSS13_SXIF_GPS

GPIO1_13GPIO1_12GPIO1_14

RTCCLK_ORTCCLK

VRTC AVSSRTC

FM_AUIN_RFM_AUIN_L

FM_AUOUT_RFM_AUOUT_L

FM_TX_OUTFM_RX_IN_NFM_RX_IN_PI2S_DATA_IN

I2S_DATA_OUTI2C_SDAI2C_SCLI2S_CLKI2S_WS

NC2FM_VDD28FM_VDD13

FM_VSS2FM_VSS1

FB803 120

C831 100p

.

+ 2 V 8_ V I O

_ M T K

S D 1_ D A T 1

S D 1_ D A T 2

S D 1_ D A T 3

W I F I_ T X

A N T S E L_ 1

A N T S E L_ 0

S D 1_ C L K

S D 1_ C M D

S D 1_ D A T 0

W I F I_ A V D D 1 3

W I F I_ R X

_ B T

_ T R X

W F

_ P A

_ V C C

Close to MT6577

3. Make star connection for AVDD13 (Both E6,E7 and E4,C4,G1) C l o s e t o M T 6 6 2 0

C l o s e t o M T 6 6 2 0

1

2 4 3



3. TROUBLE SHOOTING



START

BT-WiFi will work properly

Check the Signal level at TP1 (U801 )

Check the signal level at TP2 (U801)


Check the signal level at TP4 (FL802)

Check the signal level at TP5(FL803)

Check the Antenna Clip (ANT804)

Replace U801

Replace U801

Replace U801

Replace FL802

Replace FL803

Replace ANT804

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes



3. TROUBLE SHOOTING



3.16 GPS Part

BOT L

J

14

1213

24

10 6

5

C832

V A 7 0 6

ANT804

SC215

C330

F B 8 0 3

C 8 4 6

FB802

C424

R 4 1 0

V A 7 0 1

R627

L 3 0 5

R 8 1 5

C 8 0 2

328

L302

C 4 3 4

C 8 4 0

L807

U804

T P 4 0 2

L 3 0 1

C339

Z D 7 0 3

FL803

L809

R 3 0 2

X801

R403

VA402

C426

R320

C419

C 8 0 7 VA405

C263

C806

0 6

C 8 7 1

R 7 0 8

FL404

C 8 4 5

C868

V A 7 0 5

C 8 2 6

R812

VA406

TP801

R411

C837

8 0 1

C 8 2 3

R 8 1 7

T

F L 4 0 3

C N 4 0 2

C333

C831

R 4 1 2

R 8 1 4

R 3 0 1

C331

FB801

C 8 5 2

L805

C 8 4 1

C808 C 8 0 9

C332

VA403

L812

BAT700 C 7 1 8

C262

C872

R 7 0 5

C422

C427

C836

C 8 4 7

C843

L 3 0 3

C873

R 4 0 6

C425

J 5 0 1

C336

C 8 4 8

C609

C 8 1 3

ZD801

V A 7 0 3

C822

R408

C 8 5 1

C 8 0 3

C322

VA407

C 8 2 7

U803

C801 C 7 0 9

C 8 7 0

C817

VA404

C N 4 0 6

TP812

V A 7 0 4

R 8 1 6

C 8 5 5

V A 7 0 2

C 7 1 0

C804

R 7 1 5

C869

C810

LD401

C828

C423

TP810

R813

TP1

X80126MHz

7L26002009



3. TROUBLE SHOOTING



BOT

TOP

TP5

TP6TP4

A

B

C

D

L

J

1

14

1213

24

10 6

5

C832

V A 7 0 6

A

SC215

C330

F B 8 0 3

R608

401

C 8 4 6

FB802

C424

J 7 0 1

R 4 1 0

V A 7 0 1

R627

L 3

C326 R 8 1 5

C 8 0 2

C328

L302

C 4 3 4

C 8 4 0

L807

T P 4 0 2

L 3 0 1

C339

FL803

L809

R 3 0 2

X801

R403

VA402

C426

R320

C419

C 8 0 7 VA405

U 6 0 4

C263

C806

L 8 0 6

C

8 7 1

FL404

C 8 4 5

402

V A 7 0 5

C 8 2 6

R812

VA406

TP801

C610

R411

29

C837

A N T 8 0 1

C 8 2 3

R 8 1 7

T

F L 4 0 3

C N

4 0 2

C333

31

C831

R 4 1 2

CN501

R 8 1 4

R 3 0 1

C331

FB801

C327

C 8 5 2

L805

C 8 4 1

C808 C 8 0 9

C332

VA403

L

BAT700 C 7 1 8

C262

C872

R 7 0 5

C422

C427

C836

C 8 4 7

C

R628

L 3

C873

R 4 0 6

C425

J 5 0 1

C336

C 8 4 8

33

C609

C 8 1 3

ZD801

V A 7 0 3

C822

R408

C 8 5 1

C 8 0 3

VA407

C 8 2 7

C801 C 7 0 9

C 8 7 0

C817

VA404

C N 4 0 6

TP812

403

V A 7 0 4

R 8 1 6

C 8 5 5

V A 7 0 2

C 7 1 0

C804

R 7 1 5

C869

32

C810LD401

C828

C423

TP810

R813

FL8031575.42MHz

Filter

TP2

TP3

ANT801



3. TROUBLE SHOOTING



A N T 8 0 1

M B V 6 2 5 6 2 0 0 1

1

F E E D

ZD801

2

1

L804 5.6n

L805

6.8n

2

1

L806

100p1

2

DNI

L807

1

2

C818 33p

C819

DNI

100pC817

1575.42 MHz

FL801

5 2

4 1

3G3

INOUTG1G2

1

2

.

GND

L802 3n

21

C821 4.7n

21R803

1K21

L803 1221

C816

0.1u

C815

18p

DNI

L808

2

1

6.8p

C825

U802

3

2

5

4

1

R F

_ I N

FIL_OUT

VDD

S_D

GND

+2V8_TCXO_LDO

GPS_LNA_EN

RF_INP_GPS

Near To LNA

TP2 TP3

TP4

TP5

TP6



3. TROUBLE SHOOTING



26MHz

X801 7L26002009

GND2VCC 4OUTPUT3

GND_NC 1

1nC852

C855

1u1

2OSC1_GPS

+2V8_TCXO_LDO

1 u

C 8 4 9

C851

100n1

2

C835

100n

100n

C828C827

100n10p

C826

100n

C834

C 8 4 6

1 0 0 n

1 0 p

C 8 4 5

1 0 p

C 8 4 7

1 0 p

C 8 4 8

T P 8 1 3

T P 8 1 2

T P 8 1 1

U801

B12

A11

C11

A12

C12

C13

G7

G8

G9

F9

F4

A13

B13

E12

H10

E13

D13

B11

E8

A8

B8

B5

B9

A9

B7

B6

K9

D 9

M 9

J 3

H 2

J 2

L 9

J 9

E 1

C 2

A 1

G 1

C 4

E 4

E 6

E 7

K 7

F 5

E 3

C 5

E 5

D 4

E 2

G 3

B 1

B 3

C 3

H 4

K 8

M 8

N 8

H 5

M 7

J 8

G 4

L 8

G 5

A 4

A 5

A 3

C 1

D 1

R X

_ 5 G

_ I N

T X 5 G

_ O U T

T X 2 G

_ O U T

R X 2 G

_ I P

R X 2 G

_ I N

E E D I

E E S K

E E C S

C L K

_ D C

S D 1_ D A T 1

S D 1_ D A T 2

S D 1_ D A T 3

S D 1_ C M D

S D 1_ C L K

S D 1_ D A T 0

A V S S 3 3_ B A

A V S S 3 3_ P A

_ 1

A V S S 3 3_ P A

_ 2


_ 1


_ 2

A V S S 1 3_ B B

A V S S 1 3_ P L L_ 1

A V S S 1 3_ P L L_ 2

A V S S 1 3_ T R X 2 G 5 G

G N D 1

G N D 2

A V D D 1 3_ P L L_ 1

A V D D 1 3_ P L L_ 2

A V D D 1 3_ B B

A V D D 1 3_ T R X 5 G


_ 1

A V D D 3 3_ P A

A V D D 3 3_ B A


_ 2

D V D D I O

_ S D I O 1

A N T S E L_ 4

A N T S E L_ 3

A N T S E L_ 2

A N T S E L_ 1

A N T S E L_ 0

DVDDIO_SD2 AVDD33_BTTX AVDD13_BTRX AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTSX_1 AVSS13_BTSX_2GND3NC1OSC1_GPSSYNCECLOCKDUTY_LOSSRF_INN_GPSRF_INP_GPSGPIO1_25GPIO1_24

GPIO1_26GPIO1_27GPIO1_28 AVDD28_OSC AVDD13_SXIF_GPS AVDD13_LNA_GPS AVSS28_OSC AVSS13_RX_GPS AVSS13_SXIF_GPS

.

+1V8_VIO_MTK

+ 2 V 8_ V I O

_ M T K

GPS_SYNC

S D 1_ D A T 1

S D 1_ D A T 2

S D 1_ D A T 3

W I F I_ T X

A N T S E L_ 1

A N T S E L_ 0

S D 1_ C L K

S D 1_ C M D

S D 1_ D A T 0

W I F I_ A V D D 1 3

OSC1_GPS

W I F I_ R X

_ B T

_ T R X

BT_AVDD33

GPS_AVDD13

W F

_ P A

_ V C C

BT_AVDD13

+2V8_TCXO_LDO

RF_INP_GPS

C l o s e t o M T 6 6 2 0

C l o s e t o M T 6 6 2 0

Close to Pin A9

TP1



3. TROUBLE SHOOTING



START

GPS will work properly

Check the Signal level at TP1 (X600 )

Check the voltage at TP5 , +2.8V?


Check the signal level at TP4 (FL600)

Check the Antenna Clip TP2 (ANT601)

Replace X600


Replace U601

Replace FL600

Replace ANT601

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes



3. TROUBLE SHOOTING



3.17 FM Radio

TOP

L503,R515,L504

100n

L504

2

1

L503 100n

R513DNI

1

C533

47p1

2

47p

C534

1

2

EAR_REAR_L

FM_ANTL503

L504,R513



3. TROUBLE SHOOTING



START

FM will work properly

Check the ear-jack condition

Good?

Check the components conditionGood? (R515,L504,L503)

Check Bias Voltage

Good?

Replace ear-jack

Give the addition solder in(R515,L504,L503)

Replace U801

No

No

No

Yes

Yes

Yes



3. TROUBLE SHOOTING



3.18 IRRC

TOP

TP2: LD601(+2V8_IrRC_LDO)

TP4 (LINE_OUT_IRRC)

TP1: C530(+2V8_IrRC_LDO)

TP3 (IRRC_TX)





3. TROUBLE SHOOTING



START

Entire PCB looks being damaged

Check for whether TP1 is 0 V

Check TP2 Is it right?

Check TP3 right? Check TP4 right?

Replace U608

Replace LD601

Replace U605

No

No

NoNo

Yes

Yes

Yes Yes



4. DOWNLOAD



4. DOWNLOAD

This document is draft version, so the contents will be updated after registering the nal one.

TOOL INFORMATION

TOOL VERSION DLL NAME USB DRIVER

Please Check the Version to “B2B”

H/W

Name Part No. Software

D/L Cable



4. DOWNLOAD



LGD686

LGD686



4. DOWNLOAD



LGD686

LGD686



4. DOWNLOAD







4. DOWNLOAD





4. DOWNLOAD





4. DOWNLOAD









4. DOWNLOAD





4. DOWNLOAD





4. DOWNLOAD



LGD686

LGD686

LGD686AT-00-V10a-SSV-XXX-JUN-03-2013+0.tot

LGD686



4. DOWNLOAD



LGD686

LGD686

LGD686AT-00-V10a-SSV-XXX-JUN-03-2013+0.tot



4. DOWNLOAD



LGD686

LGD686



4. DOWNLOAD



LGD686LGD686



4. DOWNLOAD



LGD686LGD686



5. BLOCK DIAGRAM



5. BLOCK DIAGRAM

[LG-D686] HW Block Diagram (Dual SIM)

Audio

AMP

MT6577

(AP)

TDP/N5.5” TFT LCD

(960x540)

MT6162

(RF Transceiver)

JTAG

DDRAM

DQM/S

RF I/F

Proximity

USB

Accelerometer

Compass

MSCD

5Pin u-USB

Main Camera (8M AF MIPI)

EAR_L/R

MIPI I/F

BL Booster/

Flash Driver Touch Screen

JTAG

8Gb LPDDR2

8GB eMMC

SKY77589

(TX MODULE)

I2C1

Camera

FLASH

I2C1

I2C0

I2C0

MIC1MIC1

MIC2MIC2

MAIN

ANT

SwitchingCharging IC

SD I/F

Volume BTN

USIM Dual SIMI2C0

NML

32.768kHz

RCV

3.5 pi

BSI

MT6620

(Connectivity)

I2S GPS LNA

SPDT

(BT/WIFI)

BT/WiFi ANTPCM

PMIC

(MT6329)

PWR BTN

Motor

SD CARD

26MHz

2G DCS SAW FILTER

3G QUAD BAND

26MHz

2G TX

FM RADIO

BATTERY

3,140mAh

Quick memo BTN

3G DUAL PA

SKY77758

3G DUAL PA

SKY77758SPDT

I2C2Front Camera

(1.3M FF I2C)

DSV

GPS ANT

Dual SPK

IrRC

HPLP/HPRP

HSN/HSP

Booster Dual AMP

Booster Dual AMP



5. BLOCK DIAGRAM



[LG-D686] RF Block Diagram

TxModule

SKY77589

IncludedGSM PAM TX_QN

TX_QP

RX_BBIPRX_BBIN

XO1_REFIN

LNA6NLNA6P

TX_LB1

TX_HB1

TX_LB2

TX_HB3

LNA3NLNA3P

RX_BBQPRX_BBQN

TX_INTX_IP

VCTCXO26MHz

DL_I_PDL_I_NDL_Q_PDL_Q_N

UL_I_NUL_I_PUL_Q_NUL_Q_P

PAM

W850DUPLEXER

W900DUPLEXER

PAM

AFCMT6577

BPI_BUS0BPI_BUS1BPI_BUS2

PA_ON_B2_EN BPI_BUS10PA_ON_B1_EN BPI_BUS11PA_ON_B5_EN BPI_BUS12PA_ON_B8_EN BPI_BUS13

BPI_BUS5APC

GSM850_GSM900_TX

DCS_PCS_TX

Rx_DCS

C o u p le r

C o u p le r

LNA5NLNA5P

CLKDATA0DATA1

EN

BSI1_CLKBSI1_DATABSI1_CS1BSI1_CS0

CLK26M

VM0PA_R0

TX_ENVRAMP

REF_CLK

MODEBS

VSW_EN

Thermistor AUX_IN3

VDD_1aVDD_28aVDD_28b

MT6329PMIC

MT6162

ANT_SEL0~2

GPA_PA_RAMP

GPA_PA_EN

TRX1 SAWFILTER

TX_HB_IN

TX_LB_IN

W1900DUPLEXER

W2100DUPLEXER

SPDT

TX_HB2

LNA4NLNA4P

LNA4NLNA4P



5. BLOCK DIAGRAM



MT6577 8GB + 8Gb MCP

DDRAM_CLK_ENDDRAM_CS[0]_N

DDRAM_ADDRESS_[0:9]

CLK_T

CLK_C

CKE0CS0_n

CA[0:9]

DQ[0:31]

Micro SDMSDC1_CLK

MSDC1_CMD

MSDC1_DATA[0:3]SD_DATA[0:3]

SD_CMD

SD_CLK

+3V0_MICRO_SD

SD_DETECT

+1V8_VIO_MTK

DDRAM_CLK_PDDRAM_CLK_N

ECKEECS0_B

ED[0:31]

ED_CLKED_CLK_B

DDRAM_DATA_[0:31]

LPDDR2X32 8Gb2CS

eNAND x8 8GB

DAT[0:7]eMMC_DATA[0:7]

RSTeMMC_RST

CMDeMMC_CMD

CLKMeMMC_CLK

H9TP65A8JDACPR-KGM

MSDC1_INSI

VMCH

SCLK

SIOUSIM1_DATA

USIM1_CLK

+3V0_VSIM_VCC

USIM1_RESET_NSRST

VSIM

USIM1

SCLK2

SIO2USIM2_DATA

USIM2_CLK

+3V0_VSIM2_MTK

USIM2_RESET_NSRST2

VSIM2

USIM2

DDRAM_DQS_[0:3]_PDQS[0:3]_T

DDRAM_DQS_[0:3]_NDQS[0:3]_C

DDRAM_DQM[0:3]DM[0:3]

+3V3_eMMC_MTK

+1V2_VLPDDR2_MTK

EA[0:9]

EDQS[0:3]

nEDQS[0:3]

DAT[0:7]

RSTB

CMD

CLK

VIO18

VMC

VM12_1

CLK

CMD

DATA[0:3]

DET

VDD

CLK1

IO1

RST1

VCC1

CLK2

IO2

RST2

VCC2

DDRAM_CS[1]_N CS1_nECS1_B

DQM[0:3]

[LG-D686] Memory, MICRO-SD, USIM





5. BLOCK DIAGRAM



4 LDO

Backlight+Camera Flash

(LM3639)

MT6577

8M AFCAMERA

MIPI

1.3M FFCAERA

MIPI

MCLK

CAM_DATA[0:1]_P

CAM_MCLK

CAM_VCM_PWDN

SCL

SDAI2C_COMMON_SDA

I2C_COMMON_SCL

CAM_RESET_N

CMMCLK

RCP

RDP[0:1]

CMPDN

KP_ROW6

KP_ROW7

CMRST

+2V8_CAM_AVDD

+2V8_CAM_VCM

+1V8_CAM_VIO

RCN

CAM_CLK_P

CAM_CLK_N

CAM_DATA[0:1]_NRDN[0:1]

OUT1

FLED1

FLED2

+VBATBattery

KP_ROW3

SCL

SDA

STORBE

FLASH_EN

KP_ROW2

TXFLASH_LTD

EMIFilter

EMIFilter

OUT2

OUT3

OUT4

+1V2_CAM_DVDD

MIPISwitch

[LG-D686] Camera (Main:8M AF, Sub:1.3M FF)



5. BLOCK DIAGRAM



SPK ampTPA2015D1

RCV_P

RCV_N

SPK ampTPA2015D1

MT6577

HPH_LHPLP

HPRP

OUT+

OUT-

HPH_R

VIO18 IN

IN

AU_VIN0_P

AU_VIN0_N

AU_VIN1_P

AU_VIN1_N

VMICVMIC

SPKSPK_RP

SPK_RN

EAR_L

EAR_R

H e a d s e t

HSP

HSN

Main MI C

E ARBI ASE AR MIC _BI AS

MIC _P

MIC _N

AU_VIN2_P

AU_VIN2_N2 n d MI C

MIC 2 _P

MIC 2 _N

E ARMI C _P

E ARMI C _N

RCV

SPKSPK_LP

SPK_LN

Headphone ampTPA6136

Headset_AMP_EN

INL

INR

EN

OUT+

OUT-

SPK_AMP_R_EN EN

SPK_AMP_L_EN EN

[LG-D686] HW Block Diagram : Audio



5. BLOCK DIAGRAM



MT6577

6 Axis Sensor BMC-150

PROXIMITY SENSORAPDS-9130-200

+1V8_VIO_MTK

+3V0_SENSORS_MTK

I2C_SENSOR_SCL

I2C_SENSOR_SDA

3AXIS_INT

SCL

SDI

COMPASS_DRDY

PROX_INTINT

SCL_0

SDA_0

EINT0

KP_ROW4

EINT3

INT1

VCAM_AF

VIO18

SCL

SDA

I2C_COMMON_SCL

I2C_COMMON_SDA

KP_ROW6

KP_ROW7

DRDY

Hall ICBU52031NVX

OUTHALLIC_INT

EINT1

[LG-D686] HW Block Diagram : SENSOR











6. CIRCUIT DIAGRAM

+3V0_SENSORS_MTK

+1V8_VIO_MTK

U804

L 1 2

N 6

N 8

N 7

L 1 3

L 1 4

K 9

N 1 1

M 1 0

N 1 2

N 1 3

N 1 4

M 1 3

E 5

E 9

F 6

E 2

D 1

C 1 1

C 6

C 5

E 8

C 7

N 9

H 1 3

K 1 4

J 1 4

H 1 4

G 1 4

C 1 3

B 1 4

B 1 3

A 1 4

E 1 4

E 1 3

H3J5

K2

J2

E7

G5G3B6 A5B5 A7F3F2B8B11B7 A11C10C8 A8B9E3F5E1B10C9 A10

D12

H12

C12

K13

J13

A13

G13

G12

E10

D14

D13

C14

B12

E12

F13

F12

K5

G2

G1

E6

A3

B1

C3

B2

C4

C1

B3

D2

D3

A4

B4

M3

M4

N2

L2

A2

L3

K3

M2

J3

K1

H2

H1

L1

H5

N1

P11

P10

P12

P13

M5

P3

P2

N4

N3

N5

P5

P7

P8

P 1 4

H 6

K 8

J 7

H 7

G 7

M 6

K 6

M 7

K 7

M 9

M 8

K 1 0

M 1 1

M 1 2

P 1

A 1

J 6

G 6

F 7

K 1 2

J 1 2

J 1 0 J 9 J 8

H 1 0

H 9

H 8

G 1 0

G 9

G 8

F 1 0

F 9

F 8

G N D

_ V P R O C

_ 1

G N D

_ V P R O C

_ 2

G N D

_ V P R O C

_ 3

G N D

_ V C O R E

_ 1

G N D

_ V C O R E

_ 2

G N D

_ V C O R E

_ 3

G N D

_ V C O R E

_ 4

G N D

_ V I O 1 8_ 1

G N D

_ V I O 1 8_ 2

G N D

_ V I O 1 8_ 3

G N D

_ V R F 1 8_ 1

G N D

_ V R F 1 8_ 2

G N D

_ V P A

_ 1

G N D

_ V P A

_ 2

G N D

_ L D O

_ 1

G N D

_ L D O

_ 2

G N D

_ L D O

_ 3

B G A

_ N C - A

1

B G A

_ N C - P

1

G N D

_ D R V 1

G N D

_ I S I N K

_ 1

G N D

_ I S I N K

_ 2

G N D

_ S P K 1

_ 1

G N D

_ S P K 1

_ 2

G N D

_ S P K 2

_ 1

G N D

_ S P K 2

_ 2

G N D

_ L D O

_ 4

G N D

_ L D O

_ 5

G N D

_ L D O

_ 6

G N D

_ L D O

_ 7

G N D

_ L D O

_ 8

G N D

_ L D O

_ 9

G N D

_ L D O

_ 1 0

B G A

_ N C - P

1 4

VBAT_SPK1VBAT_SPK2

VBI_PVBI_N

AUD1_P AUD1_N

AUD2_P AUD2_N

BYPASS

SPK1_PSPK1_N

SPK2_PSPK2_N

VCDTCHR_LDOVDRVISENSEBATSNSBATONTREFPCH_DET

USB_DLNUSB_DLP

SRCLKENRESETBPWRKEYPMU_TESTMODEPWRBBSYSRSTBFSOURCE

SCKSDAINT

DVS1DVS2

PA_SEL0PA_SEL1PA_SEL2

BL_PWMHOMEKEY

CS+CS-32K_IN

VCORE_1VCORE_2VCORE_3

VCORE_FB

VPROC_1VPROC_2VPROC_3

VPROC_FB

VIO18_1VIO18_2

VIO18_FB

VPA_1VPA_2

VPA_FB

VRF18

VRF18_FB

VM12_1VM12_2

VM12_INTVRF28

VTCXOVA1

VIO28VSIM

VSIM2VMC

VMCHVGP

VGP2VUSB

VCAMAVCAMA_SVCAM_AF

VCAMDVCAM_IO

VIBRVA2

VA2_BUF

VRTC

VRET

GND_VREF

CHG_DPCHG_DM

V B A T_ V C O R E_ 1

V B A T_ V C O R E_ 2

V B A T_ V P R O C

_ 1

V B A T_ V P R O C

_ 2

V B A T_ V P R O C

_ 3

V B A T_ V P R O C

_ 4

V B A T_ V I O 1 8_ 1

V B A T_ V I O 1 8_ 2

V B A T_ V P A_ 1

V B A T_ V P A_ 2

V B A T_ V R F 1 8

V B A T_ M I S C

V B A T

_ L D O 2_ 1

V B A T

_ L D O 2_ 2

V B A T

_ L D O 3_ 1

V B A T

_ L D O 3_ 2

V B A T_ L D O 4

V B A T

_ L D O 5_ 1

V B A T

_ L D O 5_ 2

A V D D 1 8_ I O

A V D D 1 8

A V D D 1 8_ D I G

I S I N K 0

I S I N K 1

I S I N K 2

I S I N K 3

I S I N K 4

I S I N K 5

B S T_ G D R V

K P L E D

F L A S H

A S W

_ I N 1

A S W

_ I N 2

A S W

_ O U T

G N D

_ D R V 2

0R32021

2.2uL302

1 0 0 n

C 3 1 5

1

2

C 3 1 3

2 . 2 u

1

2 1 0 0 n

C 3 1 4

1

2

+1V2_VLPDDR2_MTK

C 3 0 4

1 0 0 n

1

2

1 0 n

C 3 0 2

1

2

2 0 0 K

R 3 0 3

2

1

+1V2_VLPDDR2_MTK

2 . 2 u

C 3 0 3

1

2

TP3011

+1V8_VIO_MTK

2 0 0 K

R 3 0 4

2

1R306

10K2 1

4 7 K

R 3 1 0

2

1

4 7 K

R 3 1 4

2

1

4 7 K

R 3 1 3

2

1

4 7 K

R 3 1 2

2

1

4 7 K

R 3 1 1

2

1

R 3 0 9

4 7 K

2

1

4 7 K

R 3 0 8

2

1

4 7 K

R 3 0 7

2

1

1 0 0 n

C 3 1 91

2

C306

1u1

2

+1V8_VIO_MTK

1u

C318

1

2

C 3 1 0

0 . 1

u

1

2 0

. 1 u

C 3 0 9

1

2

1 0 0 n

C 3 1 6

1

2

C 3 1 7

2 . 2

u

1

2

4.7uC339 1 2

C 3 1 2

4 . 7

u

100K

R30121

4.7uL304

+3V3_eMMC_MTK

C 3 0 7

4 . 7

u

C 3 3 6 4 . 7 u 1 2

C333 4.7u 1 2

4.7uC332

1 2

L 30 3 2 .2 u

R 3 18 3 . 3 K

C 3 2 5

1 u

1

2 C 3 2 6

1 u

1

2 C 3 2 7

1 u

1

2

1 u

C 3 2 8

1

2

C311

1u1

2

1u

C331

1

2

C 3 4 0 1 u 1 2

330kR317

C 3 2 2

2 . 2

u1

2 C 3 2 3

2 . 2

u1

2

2.2u

C3381

2

C 3 3 4 1 0 n 1 2

1 0 u

C 3 2 1

1 0 u

C 3 2 0

D3011 2

1 0 n

C 3 0 1

1

2

C 3 0 5

1 0 0 n

1

2

1 u

C 3 2 9

1

2 C 3 2 4

2 . 2

u1

2

C 33 5 1 u

1 M

R 3 2 2

2

1

+1V8_VIO_MTK

1 u

C 3 3 0

1

2

4 7 K

R 3 2 3

2

1

100

R32121

U301

A5

A8B2

K3M9

J1L1T2

U5

B8

F10F7

G5H9

J10L6M6N6

R10T9

V7V10

E5G2K1M7U2W5

E6F1V1W6

B5C5

C1

B4 A4 A6B6 A7B7B3 A3

L2

P2

P1

N2

N1

M3

L3

F 3

G3

H2

H3

J3

J2

K2

R1

R2

R3

T3

U3

H7

T7

L5

N5

G8

G9

U8

U9

K6

K5

P6

P5

K8

K9

P9

P8

P7

R6

E7

G6

R9

E8

G7

E9

F8

H6

T6

V8

W9

U7

R7

T5

W8

U6

W7

H8

J8

J7

J9

J6

K7

R8

T8

H5

Y 1 0 Y

9 Y 2

Y 1

W 1

W 1 0

E 1 0

B 1 0 B

1 A 1 0 A

9 A 2

A 1

W 3

W 2

V 3

P 3

N 3

M 2

E 3

E 2

D 6

D 5

D 4

D 3

D 2

D 1

C 6

C 4

C 2

E1

B9

T1

M1

H1

V5

V2

U1

M8

F2

F5

G1

R5

V9V6

U10

T10

P10

M5

K10

J5

H10

G10

F9

F6

C3VSSQM

VSSQ1

VSSQ2

VSSQ3

VSSQ4

VSSQ5

VSSQ6

VSSQ7

VSSQ8

VSSQ10

VSSQ11

VSSQ12

VSSQ13

VSSQ9

VSS3

VSS2

VSS1

VSS4

VSS5

VSS6

VSS7

VSSCA1

VSSCA2

VSSCA3

VSSM1

VSSM2

N C 1

N C 2

N C 3

N C 4

N C 5

N C 6

N C 7

N C 8

N C 9

N C 1 0

N C 1 1

N C 1 3

N C 1 4

N C 1 5

N C 1 6

N C 1 7

N C 1 8

D N U 1

D N U 2

D N U 3

D N U 4

D N U 5

D N U 6

D N U 7

D N U 8

D N U 9

D N U 1 0

D N U 1 1

D N U 1 2

D N U 1 3

DQ28

DQ0DQ1

DQ10DQ11DQ12DQ13DQ14DQ15DQ16DQ17DQ18DQ19

DQ2

DQ20DQ21DQ22DQ23DQ24DQ25DQ26DQ27

DQ29

DQ3

DQ30DQ31

DQ4DQ5DQ6DQ7DQ8DQ9

DQS0_C

DQS0_T

DQS1_C

DQS1_T

DQS2_C

DQS2_T

DQS3_C

DQS3_T

DM0DM1DM2DM3

CA0CA1CA2CA3CA4CA5CA6CA7CA8CA9

ZQ N C 1 2

CLK_CCLK_T

CKE0CKE1

CS0_NCS1_N

VSS8

DAT0DAT1DAT2DAT3DAT4DAT5DAT6DAT7

RST

CMDCLKM

VDD1_4VDD1_3VDD1_2VDD1_1

VDD2_6VDD2_5VDD2_4VDD2_3VDD2_2VDD2_1

VDDQ13VDDQ12

VDDQ10VDDQ9VDDQ8VDDQ7VDDQ6VDDQ5VDDQ4VDDQ3

VDDQ1VDDQ2

VCCQ

VDDQ11

VDDCA3VDDCA2VDDCA1

VREFDQVREFCA

VCC2VCC1

VDDI

C342

1u1

2

2 4 0

R 3 1 5

2

1

L 3 05 2 . 2 u

21

R 3 1 9

5 1 K

2

1

C337

2.2u1

2

R305

2721

R 3 0 2

4 7 K

2

1

L 30 1 2 .2 u

+2V85_VRF_MTK

+2V85_VRF_MTK

+2V8_VTCXO_MTK

+3V4_VWPAM_MTK

+1V8_VIO_MTK

+1V8_VIO_MTK

+1V8_VIO_MTK

SCL_2SDA_2

RESET_IN

WATCHDOG_RESET

PMUCTRL0

BBWAKEUP

PMUCTRL1

PMU_INT

SRCLKENA

PACTRL2

PACTRL0PACTRL1

CHD_DPCHD_DM

+3V0_VSIM2_MTK

+2V8_VIO_MTK

eMMC_CLK

eMMC_RST

+3V0_VSIM_MTK

DDRAM_DQM_[2]DDRAM_DQM_[1]

DDRAM_DQM_[3]

DDRAM_DQS_[0]_PDDRAM_DQS_[1]_PDDRAM_DQS_[2]_P

DDRAM_DQS_[3]_NDDRAM_DQS_[2]_N

DDRAM_DATA_[19]DDRAM_DATA_[18]DDRAM_DATA_[17]DDRAM_DATA_[16]DDRAM_DATA_[15]DDRAM_DATA_[14]DDRAM_DATA_[13]DDRAM_DATA_[12]DDRAM_DATA_[11]DDRAM_DATA_[10]

+3V3_MICRO_IO

+2V8_VRTC_MTK

DDRAM_CS_[1]_N

DDRAM_DQM_[0]

DDRAM_CLK_NDDRAM_CLK_P

DDRAM_CS_[0]_N

DDRAM_ADDRESS_[0]DDRAM_ADDRESS_[1]DDRAM_ADDRESS_[2]DDRAM_ADDRESS_[3]DDRAM_ADDRESS_[4]DDRAM_ADDRESS_[5]DDRAM_ADDRESS_[6]DDRAM_ADDRESS_[7]DDRAM_ADDRESS_[8]DDRAM_ADDRESS_[9]

DDRAM_DATA_[9]

DDRAM_DATA_[1]

DDRAM_DATA_[29]DDRAM_DATA_[28]DDRAM_DATA_[27]DDRAM_DATA_[26]DDRAM_DATA_[25]DDRAM_DATA_[24]DDRAM_DATA_[23]DDRAM_DATA_[22]DDRAM_DATA_[21]DDRAM_DATA_[20]

DDRAM_DATA_[8]DDRAM_DATA_[7]DDRAM_DATA_[6]DDRAM_DATA_[5]DDRAM_DATA_[4]DDRAM_DATA_[3]DDRAM_DATA_[2]

DDRAM_DATA_[30]DDRAM_DATA_[31]

DDRAM_DQS_[3]_P

DDRAM_DQS_[0]_NDDRAM_DQS_[1]_N

+2V5_AVDD1_MTK

+3V3_USB_MTK

+1V2_CORE_MTK

+1V2_VM12_INT_MTK

+1V35_PROC_MTK

+1V2_VLPDDR2_MTK

+1V2_VLPDDR2_MTK

VBATT

VBATT

VBATT

VBATT

+3V3_eMMC_MTK

DDRAM_CLK_EN

DDRAM_DATA_[0]

+1V8_VRF_MTK

RTCCLK_D

eMMC_CMD

PWR_ON_SW_N

VTREF

PCB_REVISION

eMMC_DATA[0]eMMC_DATA[1]eMMC_DATA[2]eMMC_DATA[3]eMMC_DATA[4]

eMMC_DATA[6]eMMC_DATA[5]

eMMC_DATA[7]

+0V6_VREF

+0V6_VREF

VAPROC_FB

+2V5_AVDD2_MTK

AVDD18_DIG

AVDD18_DIG

BATT_TEMP_ADC

VCHG_LDO_4V9

+3V0_TOUCH_MTK

+3V0_LCD_VCI_MTK+1V8_LCD_VIO_MTK+3V0_VIBR_MTK

FGN_IC

+3V3_MICRO_SD

2.035714

1.425

0.911224

0.605906

0.457053

0.305357

R2

ADC

ADCValue[V]

100K

47K

27K

19.1K

12K

5.6K

R2

100K

R1

1.2

1.1

1.0

C

B

A

EVB

Revision

PCB Revision

100K

100K

100K

100K

100K

100K

250K

R1

3.3V,100mA

1.8-2.8V,2mA

2.5/2.8V,100mA

1.3-3.3V,100mA1.3-3.3V,300mA1.3-3.3V,200mA

1.5-2.8V,200mA

1.3-3.3V,100mA

1.3-3.3V,400mA1.3-3.3V,200mA1.3-3.3V,100mA1.8/3.0V,100mA

2.8V,100mA1.8-2.5V,100mA

2.8V,40mA2.85V,200mA

1.2V,360mA0.9-1.2V,300mA

1.2V,300mA

Seperate DC-DC GND to Main GND

1%

1%

1.3-3.3V,200mA

1.3-3.3V,100mA

[8GB eMMC_8Gb LPDDR2] FOR V5

FORPI TEST

0.151136

REV1.0







6. CIRCUIT DIAGRAM

Z D 5 0 1

2

1

0 C511

R 5 1 8

0

0

R517

0

R502

2

1

C524

1u

C 5 2 0 1 u

1uC518

1uC521

C519 1u

2.2u

C517

VBATT

F B 50 5 6 0 0

600FB506

Z D 5 0 3

2

1 Z D 5 0 4

2

1

C527

33p

C528

33p

FB507

1800

C525

33p

C526

33p

CN501

2

1

C535

1u

1 2

VBATT

VBATT

2.2u

L501

21

U503D4 D3

D2D1

C4

B4

B3 A4

A2

B2C1

A1

B1

C2

A3

C3

S G N D

OUTL

H P V S S

GND

E N

CPN

CPP

V D D

INL-

HPVDD

INL+

INR+

HI-Z

GAIN

OUTRINR-

C502

10uC504

10u

DNIC512

100n

L504

2

1

10R511

R512 10

Z D 5 0 6

21 Z D 5 0 5

21 Z

D 5 0 7

2

1 Z D 5 0 8

1

4 7 0 K

R 5 0 7

1

2

1800FB508

+1V8_VIO_MTK

1800FB509

R 51 5 0

F B 5 11 1 8 0 0

L503 100n

C 5 0 9 0

F B 5 1 0 1 8 0 0

MIC501

4

3

2

1P

G1

G2

O

33p

C531

C529

DNI

33p

C530

2.2K

R509

10u

C501

C503

10u

10K

R50621

C516

33p

60FB501

FB503 60

33p

C513

R 5 0 8

1 . 5 K

33p

C514

C515

33p

+1V8_VIO_MTK

1 0 0 K

R 5 0 5

2

R 5 0 3

D N I

2

VA501

2

1

2.2u

C523

60FB504

R513DNI

1

J501S/W_Detect

SPK_L

SPK_R

MIC

GND

C522

1u

F B 50 2 6 0

L502

2.2u21

U501

D1

D2

D4

D3

B4

A4

B2B3

A3 A2 A1

C4

C3

B1

C1

C2

G N D 2

OUT-

OUT+

END

G N D 3

P V D D

P V O U T

S W

AGCGAIN

G N D 1

V B A T

IN-

ENB

IN+

G N D 4

U502

D1

D2

D4

D3

B4

A4

B2B3

A3 A2 A1

C4

C3

B1

C1

C2

G N D 2

OUT-

OUT+

END

G N D 3

P V D D

P V O U T

S W

AGCGAIN

G N D 1

V B A T

IN-

ENB

IN+

G N D 4

47nC506

C505 47n

C 5 0 7 4 7 n

D 5 0 1

2

1

47nC508

C533

47p1

2

47p

C534

1

2

Z D 5 0 2

2

1

R 5 14 0

R516

47K21

C 5 1 0 D N I

EARMIC_BIAS

HOOK_DETECT

MIC2_P

HPH_R

HPH_R

HPH_L

HPH_L

Headset_AMP_EN

FM_RX_IN_N

SPK_RN

SPK_RPSPK_LP

SPK_LN

EARMIC_P

EARMIC_N

HP_AMP_SGND

H P

_ A M P

_ S G N D

RCV_P

RCV_N VMIC

SPK_AMP_R_EN

SPK_AMP_L_EN

EAR_R

EAR_R

EAR_L

EAR_L

FM_ANT

HS_JACK_DET

MIC2_N

Contact Type

Receiver

RevB1800 -> 600

Sub Micchanged to BSE

D-Class DUO Speaker AMP

Cutoff Freq. 320Hz, 15.5dB Gain

Close to 3.5pi ear-jack

3.5pi Ear Jack Connector

LOW

HIGH(DEFAULT)

STATE

UNMATING

HS_JACK_DET

AUDIO

MATING

MAINGND





6. CIRCUIT DIAGRAM

R 6 0 1

3 . 3

2

1+3V0_SENSORS_MTK

C 6 2 8

4 . 7

u 2

1

R628

021

0

R62721

U608RP101K282D

5

3 24 1

VOUTVDDGNDCE

P G N D

1 n

C 6 1 7

0 . 1

u

C 6 1 4

L602

1u

V B A T T

R 6 2 1

4 7 m

V C H G

_ O V P_ I N

1 u

C 6 2 3

1 u

C 6 2 4

+ 1 V 8

_ V I O

_ M T K

C 6 1 6

1 u

C 6 2 5

4 . 7

u

2 . 2

u

C 6 1 5

2 . 2

u

C 6 2 6

4 . 7

K

R 6 1 9

V C H G

_ L D O

_ 4 V 9

U606

C5

D2

D3

D1

A5

B5

A1

C1

B1

A4 A3

A2

D5

D4

C4

C3

C2

B2

B3

B4 I2CIN

IRQB

LX2

BST

GND

SCL

SFO

AVL

PG2VICHG

CS

LX1

BYP

PG1

THM

BAT

DC1

PVL

DC2

SDA

+1V8_VIO_MTK

U607

5

3241 OUT VDD

GND NC

P G N D

100n

C627

VB601

2

1

D 6 0 2

20

R616

R615

20

C613

1u

L 60 1 1 8n

1

R 6 2 4

0

2

1

300

R61221

Q601

12

3

1 0 0 K

R 6 1 0

2

1

VA602

LD601

2

1

R 6 1 3

1 K

21

+2V8_IrRC_LDO

+2V8_IrRC_LDO

ZD601

U605

435261 B C

G N D V C C

A Y

+2V8_IrRC_LDO

R 6 1 4

1 K

21

C 6 1 1

4 . 7

u 2

1

TP607 1

Q602

12

3

C612

0.1u

1

2

+1V8_VIO_MTK

1K

R61821 R620

20m

1u

C62047uC621

1 0 0 K

R 6 1 7

2

1

R 6 2 2

4 . 7

K

R623

100

47p

C618

6.8p

C619VA601

ZD602

C N 6 0 1

6

4

3

2

15G1

G2

R608

100K2 1

U6042

5

1 4

1

1 3

10

11

6

3 9

8

1 2

4

7

G N D 2DRDY

C S B

VDD

GND3INT2

G N D 1

SCK

VDDIO

P S

SDO S D I

I N T 3

INT1

+1V8_VIO_MTK+3V0_SENSORS_MTK

100n

C610

1

2

C609

100n1

2

U603

9

3

54

6

72

81S DA V DD

I NT S CL

GND

L E DK L E DA

LDR

NC

1 0 K

R 6 0 3

2

1

C607

2.2u1

2

C 6 2 2

1 u

1

2

VBATT

1u

C629

12 C630

1u1

2

+1V8_VIO_MTK

I2C_SENSOR_SDA

I2C_SENSOR_SDA

I2C_SENSOR_SCL

I2C_SENSOR_SCL

I2C_COMMON_SCL

I2C_COMMON_SDA

3AXIS_INT

COMPASS_DRDY

HALLIC_INT

LINE_OUT_IRRC

BATT_ID_PULLUP

VBATTVTREF

BATT_TEMP_ADC

CHARGER_IRQ_B

+3V0_VIBR_MTK

IRRC_TX

PROX_INT

BATT_ID

FGN_IC

IrRC_LDO_EN

SWITCHING CHARGING IC

10V

HALL IC

NON Q-COIN

MOTOR

IRRC LED

2mm

Battery Conn.

For MTKFuelGauge

1.2V

6 AXIS SENSOR

SENSOR

PROXIMITY SENSOR









6. CIRCUIT DIAGRAM

33nL1002

21

L 1 00 4 3 3 n

21

33nL1003

21

C 1 0 0 0 5

1 0 0 p 1

2

VA1001

0

2

1

L 1 00 1 3 3 n

21

D10002 2

1

VA1000

2

1

C10004

0.5p1

2

VA1002

2

1

SW10001

31

2G1

ANT G2

D10003 2

1

D10004 2

1

D10005 2

1

D10006 2

1

D10007 2

1

C10003 6.8p

1 2

VCHG_OVP_IN

22pC10000

1

2

MIC10000

4

3

2

1P

G1

G2

O

FL10000

4231

I N O UT

GND1 GND2

C10002

DNI1

2

100

R1000521

100

R1000321

100

R1000021

100

R1000421

CN1001

1615

1714

1813

1912

2011

2110

229

238

247

256

265

274

283

292

301

R10002

10021

100

R1000121

LD10001

EAV62094101CL-425F-UCC-SD-TS

1

3

4

2

LD10000

1

3

4

2

ANT100021FEED

ANT100001

FEED

ANT100031

FEED

SW10000

4

2

3

1

CN10000

11

10

9

5

4

3

2

1

8

7

6

ANT100051

FEED

ANT100041

FEED

D10001

2

1

ANT100011

FEED

VCHG_OVP_IN

LED_R

LED_R

LED_G

LED_G

LED_B

LED_B

MIC_N

MIC_N

USB_ID

USB_IDUSB_DN

USB_DN

USB_DPUSB_DP

GND

SPK_LP

SPK_LP

VMIC

VMIC

MIC_P

MIC_P

KROW1_F

KROW1_F

KCOL1_F

KCOL1_F

SPK_LN

SPK_LN

SPK_RN

SPK_RN

SPK_RP

SPK_RP

FPCB_LOWER_ CONNECTOR

Main MIC SPEAKER1

For Single SIM

2mm

uUSB 5 pin connector

EAB62830401

MAIN_FRONT_END RGB_LEDHOMEKEY

SPEAKER2

[FPCB Module-LOWER]



7. BGA PIN MAP



7. BGA PIN MAP

U101 MT6162 (Transceiver)

Not Used







7. BGA PIN MAP



U804 MT6329 PMIC

Not Used





8. PCB LAYOUT

A

V

18

AD

1

5

A

B

C

D

E

F

G

H

J

K

L

M

N

T

R

P

U

VW

Y

110

1 4 A

E

A

N

1

13

30

AK

C202

C404

C526

C812

U101

ZD601

C226

C223

R210

C237

C 8 5 0

L114

C243

C 8 3 8

C430

TP802

F L 8 0 1

Z D 7 0 1

R 1 1 1

C 1 5 6

C247

C 2 1 9

TP809

R619

L 8 0 2

S C 2 0 5

D401

S W7 0 3

C 1 3 2

R516

C607

C220

R 3 0 4

L118

L 1 0 1

U605

C 6 2 9

TP806

R214

L105

ANT701

C717

F B 5 0 5

TP811

C829

C421

C 2 5 7

C 1 4 0

C 2 4 1

R503

L 1 2 4

R110

D708

D703

U406

C627

C 5 3 3

R106

C203

C135

R109

C517

LD601

C420

C108

C429

C 6 1 4

L 1 2 0

L106

C234

R 1 0 5

X 2 0 1

C712

C 1

5 9

C163

S C 2 2 1

ANT702

C 8 1 6

C 2 0 7

C 1 4 1

L 1 2 5

C 2 4 4

L115

Z D 5 0 1

C127

TP807

C 5 2 7

C617

C 1 8

0

SC206R310

C 1 1 2

C227

C 1 6 7

D709

C 8 3 9

C 1 5 1

C 5 2 8

C314

R 3 0 5

C 3 1 0

R413U408

C 1 4 4

C 4 0 8

L 8 0 1

C307

R 8 0 5

C236

C415

FB507

C 1 7 7

U102

Z D 5 0 8

C 1 4 3

C814

L402

VA501

C126

FL104

C315

L 1 2 6

C101

U 6 0 6

C225

C 1 5 2

R 2 0 6

ZD503

R 5 0 2

L 1 2 8

C128

R307

C259

C245

Z D 5 0 6

R 6 1 4

L 1 3 4

C 2 6 1

L 8 1 0

C 5 3 1

C150

C417

C233

L 1 3 6

C 1 7 5

L401

L131

R203

R 8 0 4

C 5 1 8

R 5 1 2

C 5 2 1

C409

C251

C 1 6 6

C229

L 1 3 2

D706

U301

D602

R 5 1 1

TP803

C 8 3 3

C522

C 1 1 3

C 1 2 1

L 8 0 4

FL103

L 5 0 4

C306

R624

C 3 0 9

VA401

L102

C403

C626

L403

R306

SC211

U 1 0 3

C134

C 1 2 4

L 1 2 7

C222

FL106

C214

R 1

0 4

C 6 1 3

L 1 3 3

MIC501

R515

V A 6 0 2

C416

C173

C228

C 5 2 5

C235

R 4 0 1

R711

C 6 1 5

C 1 3

3

TP813

C 1 3

8

C254

Z D 5 0 7

TP804

R 5 0 6

L 8 0 8

C 5 2 9

R603

F B 5 0 6

C 3 1 9

C 1 5 8

C 1 7 6

U 6 0 3

U104

Q 6 0 1

C 8 3 4

C 1

8 2

U 4 0 2

R405

C105

R313

S W7 0 2

C204

C311

U 6 0 7

D707

D705

SC203R208

C 1 6 1

C 2 4 2

R415

U802

R507

U404

R 2 0 1

C 8 5 4

C107

L103

C623 C 6 2 4

TP805

U403

C 2 4 0

SC209

C 4 0 6

R508

L 1 2 2

L 8 0 3

C255

C205

R712

C316

C 1 4

8

C232

C106

R215

SC212

C 8 4 9

C 2 0 8

C164

F L 1 0 1

C 1 8 1

S C 2 0 7

L 1 1 7

C535

C213

R314

F B 5 1 0

R 1 0 1

C418

R 1 0 2

C 1 7 8

C 8 2 5

F B 5 0 8

C 3 0 4

X101

C250

R 6 2 1

C303

L121

C523

C611

R 1

0 3

C714

C 8 1 5

U 6 0 8

C 2 4 9

C 8 0 5

R404

C 1 4 6

R308

L 6 0 1

C246

F B 5 1 1

C612

R409

C 8 1 8

C 2 1 2

U405

R 2 0 7

C622

ZD504

C210

C109

F L 8 0 2

C201

R613

C 1 5 5

C102

C716

Z D 5 0 5

C231

C115

C230

C719

R312

C 6 1 6

U503

C 1 5 3

R601

L503

R 3 1 5

C 3 1 8

D704

R615

C413

C252

C 8 3 5

C 1 4 9

C103

L135

U801

C160

C 2 5 8

R 7 0 6

C 5 2 0

R 8 0 3

R211

S C 2 1 0

C 2 1 5

C104

C 1 2 0

C 8 2 4

R612

C 8 1 1

C224

C 1 6 5

R204

C129

TP607

R 2 1 2

C 2 1 8

C853

L 1 1 0

C 6 2 8

F B 5 0 9

C123

C 3 0 1

C 1 6 2

R 3 0 3

C830

C 1 5 4

SC201

C 1 1 9

L129

C 1 1 7

L 1 1 3

FB702

C239

L112

C221

FL102

C 1 8 3

C428

U407

C 8 4 4

R616

R505

C 8 1 9

C238

C 5 3 4

R414

R323

R107

FL105

R801

C 1

5 7

C256

R 5 1 4 PID1

C 1 2 5

R205C172

C 6 3 0

C713

C 1 7 9

TP301

C 2 0 9

L130

C 1 7 4

R 2 1 7

C317

C412

S C 2 0 2

R311

U201

FB701

R 2 1 6

C 8 2 1

C206

C253

C139

C 1

3 1

C 2 1 7

C 2 1 6

R213

C 1 3 7

C 1 6 9

C122

C 1 4

5

R309

C 1 3 0

D 5 0 1

VB601

C 5 1 9

C312

R 8 0 2

TP808

C211

R407

R517

C 3 0 2

R 5 1 3

C 1 6 8

C625

L123

C 2 6 0

R108

S W7 0 1

ZD502

L 1 1 9

SC204

C 3 0 5

C313

PT101

R610

C 1 1 8

R 5 0 9

R202

R209

R 5 1 8

C 1 4 2

C530

C 2 4 8

L 6 0 2

Q602

C524

C171

C 1 1 4

8. PCB LAYOUT

LG-D686_MAIN_EAX65429401_1.0_TOP

Model name : MT6620 (U801)Function : WIFI & BT- no WIFI & BT

Model name : 1XXA26000FTA (X101)Function : 26Mhz clock - no booting,

- no RF

Model name : SKY77758 (U103)Function : 3G PAM (Band1/Band5)- no Service

Model name : SKY77589 (U102)Function : GSM PAM- no Service

Model name : MT6162 (U101)Function : RF transceiver- no Booting,- no Service

Model name : SKY77758 (U104)Function : 3G PAM (Band1)- no Service

Model name : MOC-C110R38(MIC501)Function : MIC- no voice sound

Model name : APDS-9130-200 (U603)Function : Proximity sensor- no proximity

Model name : ALM2412 (U802)Function : GPS

- no GPS

Model name : H9TP32A4GDBCPR-KGM(U301)Function : Memory- no Booting

Model name : MT6577 (U201)Function : Baseband- no booting,- no function





9. CALIBRATION



9. CALIBRATION

This document is draft version, so the contents will be updated after registering the nal one.

CAL INFORMATION

S/W VERSION

Please Check the Version to “B2B”

H/W

Name Part No.

PIF PIF200(All Type) BJAY0024021

USB Cable USB Cable RAD32247898

Power Cable DC Power Cable RAD32247878

I/O Cable

RF Cable_Main

Power Supply_PIF Power Supply 5.3V

Power Supply_Phone Power Supply 5.0VRF Test Equipment E5515C(8960)

NOTICE







9. CALIBRATION



LGD686



9. CALIBRATION







9. CALIBRATION









9. CALIBRATION







9. CALIBRATION



Tac h on 36_



9. CALIBRATION



5.0V





9. CALIBRATION





9. CALIBRATION



D686



9. CALIBRATION



LGD686

LGD686LGD686LGD686LGD686LGD686LGD686



9. CALIBRATION



D686

D686



9. CALIBRATION



MS695

RF900

D686





10. HIDDEN MENU



Auto All Test Result:

-> Display Auto All Test result

AutoDetecting Test

: USIM, SD card, Ear jack, Battery• Check the SIM1 card• Check the SIM2 card• Check the SD card• Check Ear phone(jack)• Check Battery

- Ejected ear jack is normal

Key/Compass Test

Memo key : Check RecognitionUp/Down key : Check RecognitionMenu key : Check RecognitionHome key : Check RecognitionBack key : Check RecognitionSIM_SWITCH key : Check RecognitionEnd key : Check recognitionPhone contact with your ngers in the top of the sensor determine the sensorresponse- Far- Near



10. HIDDEN MENU



Camera Test 1Main Camera Preview

Camera Test 2Camcorder Preview

Display check Test

: LCD Black & White test• Check the Black display• Check the White display



10. HIDDEN MENU



Ring Test: Check sound• Check the sound

Vibrator testA case-by-state vibration tests

Touch window testWrite with nger







10. HIDDEN MENU



SW Sanity Test:FPRI Test :Compare andCreate logt.txtCRC Test : EFS

CRCEFSCRCDetail

DB Check :DB Check andCompareDB Dump

Device Test- Auto Detecting Item- LCD- Keypad- Touch- Audio

- Vibrator- Camera- Sensor- External Memory- GPS- RTC- Battery- ETC

AutoDetecting Test: USIM, SD card, Ear jack, Charing Mode• Check the SIM card• Check the SD card• Check Ear phone(jack)• Chck Barometer : N/A

- Ejected ear jack is normal



10. HIDDEN MENU



LCD Test List

H/W LCD Test(Manual) : Click on the following screen

H/W LCD Test(Auto) : Automatically, without clicking

Manual Test : Click on the following screen

Automatic Test : Automatically, without clicking

LCD Q Test(Not Implemented)

LCD Module Test

LCD Display Test

Mura Test : leakage of Light uniformity

Keypad test list- Dop- Qwerty

Touch test list- Finger Paing- Grid Touch Test- Grid Touch Color Change- Block Touch Test- Circle Touch Test- Pinch In/Out Test- Touch Key Test- Firmware Version





10. HIDDEN MENU



Camera test list- Proximity- Motion Sensor- Compass

External Memory test list- SD Card Status- SD Card Mount Status- Directory Creation in SD Card- File Creation in SD Card

- File Modication in SD Card- File deletion in SD Card

GPS BT WI-FI Test• Check the GPS scanning• Check the GLONASS scanning• Check the WIFI scanning• Check the BT scanning





10. HIDDEN MENU



Settings- Version Info- ALC- Auto run- Diag Settings- Data Settings- Battery- Audio- Camera- Bluetooth- ERS- ETC- LCD Always On

Version Info(Classied Information representation)- SW Version Info- Firmware Version- Baseband Version

- Kernel Version- HW Version- Factory Version- Touch Firmware Version- Build nger print

ALC

Normal Mode : Change to Normal ModeALC Mode : Change to ALC Mode



10. HIDDEN MENU



AutoRunSwitch to AutoRun Enable or Disable

Diag Settings- USB Set for Diag- UART Set for Diag- Null port

Data Settings- USB Set for Data- BT Set for Data- UART Set for Data- Null port



10. HIDDEN MENU



Battery- Charging Bypass Boot-> Change to Pseudo LT Mode/Normal Mode- Battery Fake Mode(On/Off)

Audio- Get Service Type- Audio Settings

- > Normal Mode- > Headset Mode

- > LoudSpeaker Mode- > Speech Enhancement- > Debug Info- > Speech Logger- > Audio Logger

Camera- Camera Clock Settings



10. HIDDEN MENU



Bluetooth Settings

ERS Settings- Client Status- ERS Test

ETCADC Info



10. HIDDEN MENU



LCD Always OnSwitch to LCD Backlight ON/OFF

WCDMA Only test list

- Factory Reset

- Modem Settings

- Module Test

- SIM Test(Not Implemented)

- Call Test

- Streaming

- WAP Debug

- FM Radio Test(Not Implemented)

- DRM Test

- Contacts Test

- Log service

- Flex test

- SMPL Counter

- North America APN Settings



10. HIDDEN MENU



Factory Reset:- Format SD card : External SD Card Data reset- Factory Rest :Changing the Factory- Delete Userdata: Userdata reset

Modem SettingsEnter to EngineerModeEngeinnerMode List- Telephony- Connectivity

- Hardware Testing- Location- Log and Debugging- Others

Telephony- BandMode- BSPTelephonyDevTool- Dual Talk NetworkInfo- Modem Test- Network Setting- GPRS- Fast Dormancy- Simme Lock



10. HIDDEN MENU



Connectivity- Bluetooth- FM Receiver- FM Transmitter- WiFi- CDS Information

Hardware Testing- Audio- Camerea- CPU Stress Test- Display

- IO- Memory- Power- SD Card Test- TouchScreen- USB

Location- Location Based Service- YGPS













10. HIDDEN MENU



MLT

MLT HIDDEN Menu

LG RCT Test





11. DISASSEMBLE GUIDE



2. Disassemble Main PCB

Remove FPCB CONNECTOR 5EA and COAXIAL CABLE CONNETOR from PCB

Remover 4 Point Screws From Main Ant






3. Disassemble H/W ITEM

Remove Main Ant and Cap Receiver Assy, VT Cam, Main Cam, Motor, Earjack, Rf Cable

Remove 2 Screws From Lower Fpcb






4. Disassembled Components



Documents

diagrama LG prolite -D686