diagrama LG prolite -D686

Internal Use Only

Service Manual

LG-D686

Date : September, 2013 / Issue 0.9

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������������������������������������������������������������������������������������������������������8 2.6 D686 Figures������������������������������������������������������������������������������������������� 22 3. TROUBLE SHOOTING........................................................... 23 3.1 WCDMA Rx Part....................................................................................... 23

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

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/Wifi....................................................................................................113 3.16 GPS Part.................................................................................................117 3.17 FM Radio................................................................................................122 3.18 IRRC.........................................................................................................124

LGE Internal Use Only

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

1. INTRODUCTION

1. INTRODUCTION

1. Introduction

1.1 Purpose This manual provides the information necessary to repair, calibration, description and download the features of this model.

1.2 Regulatory Information A. Security 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 your company’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 associated with your telecommunications system. System users are responsible for programming and configuring the equipment to prevent unauthorized use. The manufacturer does not warrant that this product is immune from the above case but will prevent unauthorized use of common carrier telecommunication service of facilities accessed through or connected to it. The manufacturer will not be responsible for any charges that result from such unauthorized use.

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

C. Changes in Service A local telephone company may make changes in its communications facilities or procedure. If these changes 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 Limitation Maintenance 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 any remaining 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 as the following to the end user.

LGE Internal Use Only

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

1. INTRODUCTION

1. Introduction

F. Pictures The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different.

G. Interference and Attenuation A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from unsuppressed engines or electric motors may cause problems.

H. Electrostatic Sensitive Devices

ATTENTION Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the information is ESD handling:

sign. Following

• 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.

LGE Internal Use Only

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

2. PERFORMANCE

LG-D685 Product SPEC LG-D685 Product SPEC

2.2.1 PERFORMANCE Product Name

2.1 Product Name LG-D685 : WCDMA 850/900/1900/2100+GSM850/EGSM/DCS/PCS 2.1 Product Name 7.2Mbps(cat8)/GPRS Class12/EDGE Rx only Class12) LG-D685 : WCDMA 850/900/1900/2100+GSM850/EGSM/DCS/PCS (HSUPA 5.8Mbps(cat6)/HSDPA (HSUPA: W5.8Mbps(cat6)/HSDPA 7.2Mbps(cat8)/GPRS Class12/EDGE Rx only Class12) LG-D686 CDMA 850/900/1900/2100+GSM850/EGSM/DCS/PCS

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

2.2Supporting Supporting Standard 2.2 Standard 2.2 SupportingWCDMA(FDD1,2,5,8)/EGSM/GSM850/DCS1800/PCS1900 Standard Supporting Standard Supporting Standard

WCDMA(FDD1,2,5,8)/EGSM/GSM850/DCS1800/PCS1900 with seamless handover with seamless handover Phase 2+(include AMR) Phase 2+(include AMR) SIM Toolkit : Class 1, 2, 3, C-E SIM Toolkit : Class– 1, 2, 3,MHz C-E WCDMA(FDD1) TX : 1920 1980 WCDMA(FDD1) WCDMA(FDD1) TX RX :: 1920 2110 – 1980 2170 MHz WCDMA(FDD1) WCDMA(FDD2) RX TX : 2110 1850 – 2170 1908 MHz WCDMA(FDD2) 1908 MHz WCDMA(FDD2)TX RX::1850 1930––1990 WCDMA(FDD2) MHz WCDMA(FDD5)RX TX: 1930 : 824 ––1990 849 MHz WCDMA(FDD5) TX RX :: 824 869 –– 849 894 MHz MHz WCDMA(FDD5) WCDMA(FDD8) RX TX : 869 880 – 894 915 MHz

Frequency Range Frequency Range

WCDMA(FDD8) TX RX :: 880 925 –– 915 960 MHz MHz WCDMA(FDD8) RX : 925 EGSM TX : 880 – 915– 960 MHzMHz EGSM TX RX : 880 925 – 915 960 MHz EGSM 960–MHz GSM850 TXRX : 925 –: 824 849 MHz GSM850 TX RX

Application Standard

: 824 869 – 849 894 MHz

GSM850 DCS1800RX TX

: 869––1785 894 MHz :1710

TX DCS1800 RX

:1710 : 1805––1785 1880MHz MHz

DCS1800TX RX PCS1900

: 1805 : 1850– –1880 1910MHz MHz

PCS1900 TX RX

: 1850 1930 – 1910 1990 MHz

PCS1900 RX

: 1930 – 1990 MHz

Application Standard

2.3 Main Parts : 2.3 Parts : GSM 2.3Main Main Parts : Solution Part Name Item

Comment

Item AP Chip

Part Name MT6577 (MTK)

AP CP Chip

MT6577 (MTK)

CP Chip

MT6577 (MTK)

LGE Internal Use Only

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Comment

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

2. PERFORMANCE LG-D685 Product SPEC

2.4 HW Features 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. Battery

Brazil : 3,040mAh ( typ.) Other Country

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

5.Chipset

MT6577

6. Memory

8GB(EMMC) +8Gb(LPDDR2) 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)

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),

7. LCD

8. Main Camera (8M)

LGE Internal Use Only

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

2. PERFORMANCE LG-D685 Product SPEC

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

10. Audio

Pixel x size

1.1um X 1.1um (square pixel)

1) MIDI

MIDI

2) Mono

15 X 11 X 3T Speaker

3) Receiver

13 X 07 X 2.7T Wideband Receiver

Effective Distance

10M

Distance

0 m ~ 10 m (depend on environment)

standard

IEEE 802.11 b/g/n

Throughput

Max 40Mbps (SDIO Driver performance)

depend on environment

0 ~ 50m (depend on environment)

type

A-GPS, GNSS

11. Bluetooth

12. WLAN

13. GPS

LGE Internal Use Only

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

2. PERFORMANCE LG-D685 Product SPEC

2.5. HW SPEC 2.5. HW SPEC. 1) 1) WCDMA transmitter specification WCDMA transmitter specification Item

Spec.

Min

Typ.

Max

Unit

Maximum Output Power

Power class Ⅲ

21.0

23.0

25.0

dBm/3.84MHz

Frequency Accuracy

-

-200

-

+200

Hz

Minimum Output Power

-

-

-

-50

dBm/3.84MHz

Occupied Bandwidth

-

-

-

4.6

MHz

Δf = ± 5MHz

-

-

-33

dBm/3.84MHz

Δf = ± 10MHz

-

-

-43

dBm/3.84MHz

Error Vector Magnitude(EVM)

-

-

-

17

%

Peak Code Domain Error

-

-

-

15

dBm/3.84MHz

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

-

-

-

-56

dBm/3.84MHz

Adjacent Channel Leakage Power Ratio

Open Loop Output Power

Transmit Off Power

Spectrum Emission Mask

LGE Internal Use Only

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

-8-

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

2. PERFORMANCE

LG-D685 Product SPEC

Transmit Spurious Emission

LGE Internal Use Only

9kHz ~ 150kHz

-36

dBm

150kHz ~ 30MHz

-36

dBm

30MHz ~ 1GHz

-36

dBm

1GHz ~ 12.5GHz

-30

dBm

-9-

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

2. PERFORMANCE

LG-D685 Product SPEC 2) WCDMA receiver specification 2) WCDMA receiver specification Item

Specification FDD1: 2110 ~ 2170 MHz FDD2: 1930 ~ 1990 MHz

Receive Frequency

FDD5: 869 MHz ~ 894 MHz FDD8: 925 MHz ~ 960 MHz FDD1 : BER < 0.001 when

Îor = -106.7 dBm / 3.84 MHz

Reference Sensitivity Level

FDD2 : BER < 0.001 when

Îor = -104.7 dBm / 3.84 MHz



FDD5 : 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

ACS > 33 dB where BER < 0.001 when

Adjacent Channel Selectivity

Îor = + 14 dB / 3.84 MHz

(ACS)

& Ioac = –52 dBm / 3.84 MHz @ ±5 MHz BER < 0.001 when Îor = + 3 dB / 3.84 MHz

Blocking Characteristic

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

Spurious Response

BER < 0.001 when Îor = + 3 dB / 3.84 MHz & Iblocking = -44 dBm BER < 0.001 when Îor= + 3 dB / 3.84 MHz

Intermodulation

& 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 Adjust output(TPC command) cmd

Inner Loop Power Control

1dB

+1

+0.5/1.5

0 -1

3dB

+1/3

+1.5/4

-0.5/+0.5

-0.5/+0.5

-0.5/+0.5

-0.5/-1.5

-1/-3

-1.5/-4

group(10equal command group)

In Uplink +1

LGE Internal Use Only

2dB

+8/+12

- 10 -

+16/+24

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

2. PERFORMANCE

LG-D685 Product SPEC 3) HSDPA transmitter specification 3) HSDPA transmitter specification Item

Spec.

Min

Typ.

Max

5.2.A Maximum Output Power with HS-DPCCH

1/15 ≤ βc/βd ≤ 12/15

21.0

23.0

25.0

13/15 ≤ β c/βd ≤ 15/8

20

23.0

25

15/7 ≤ βc/βd ≤ 15/0

19

22.5

25

5.7A HS-DPCCH

5.9A Spectrum Emission Mask with HS-DPCCH

5.10A Adjacent Channel Leakage Power Ratio with HS-DPCCH 5.13.1A Error Vector Magnitude (EVM) with HS-DPCCH

dBm/3.84MHz

Step 0

0 dBm +/- 1 dB

dB

Step 1 – Step 0

6 dB +/- 2.3 dB

dB

Step 2 – Step 3

1 dB +/- 0.6 dB

dB

Step 5 – Step 4

0 dB +/- 0.6 dB

dB

Step 6 – Step 7

5 dB +/- 2.3 dB

dB

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

MAX / 0dBm

Trandsmitter

Unit

Δf = ± 5MHz

-

-

-33

dBm/3.84MHz

Δf = ± 10MHz

-

-

-43

dBm/3.84MHz

-

-

17.5

%

-

-

10

BLER(%)

MAX Power -20 dBm

6.3A Maximum Receiver

LGE Internal Use Only

Input Level for HS-PDSCH Reception

Pin = -25dBm

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

2. PERFORMANCE LG-D685 Product SPEC 4)4) GSM receiver specification GSM receiver specification Item

Spec. Rms : 5°

Phase Error

Peak : 20 ° GSM : 0.1 ppm

Frequency Error

DCS/PCS : 0.1 ppm

EMC(Radiated Spurious Emission Disturbance)

GSM/DCS : < -28dBm GSM : 5dBm – 33dBm ± 3dB

Transmitter Output power and Burst Timing

DCS/PCS : 0dBm – 30dBm ± 3dB

Burst Timing

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%

LGE Internal Use Only

- 21 -

remain%

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2. PERFORMANCE

2.6 D686 Figures

LGE Internal Use Only

- 22 -

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

3. TROUBLE SHOOTING

3. TROUBLE SHOOTING 3.1 WCDMA Rx Part 3.1.1 WCDMA_B1/B2/B5/B8 Rx START

Rx TEST SETUP - DL Channel : 10700 / 9800/ 44407 / 3013 - Sector Power(dBm) : -23 /-23 /-23.5 / -23.5

1. Check DC Power Supply circuit

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.

LGE Internal Use Only

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

3. TROUBLE SHOOTING

DPX B5 (FL103) DPX B1 (FL105)

SKY77589 (U102)

MT6162 (U101)

DPX (FL106) B8

DPX (FL102) B2

TOP Side

LGE Internal Use Only

- 24 -

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

3. TROUBLE SHOOTING

3.1.1.1 Checking DC Power supply circuit

START

Check TP1(C109) +1V8_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP2(C103) +2V85_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP3(C118) +2V8_VTCXO_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

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

LGE Internal Use Only

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

3. TROUBLE SHOOTING

TP3: C118 (+2V8_VTCXO_MTK )

MT6162 (U101)

TP2: C103 (+2V85_VRF_MTK ) TP1 : C109 (+1V8_VRF_MTK )

BSI1_CS0

+1V8_VIO_MTK C106

2

1

39p

BSI1_CLK

BSI1_DATA BSI1_CS1 C105

2

1

1

PGND

GND2

EN

B1

C2

D1

VINT

DATA1

F1 DATA0 E2

CLK

VDD_28b

G2

TP1

J2 VSUP2a H1

L2

1

TP2 1u

1u

1

C103 C109

1

2

1u

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6 B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

1u

0.1u

TP3

A12

- 26 -

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

3. TROUBLE SHOOTING

3.1.1.2 Checking MT6162 XO circuit

START

Check TP1(C114) Is it 26MHz?

YES

XO circuit is Ok . See next page to check RF signal path.

NO Replace U801 and then check TP1(C122)

YES Is it similar ?

XO circuit is Ok . See next page to check RF signal path.

NO Replace Main B/D

LGE Internal Use Only

- 27 -

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

3. TROUBLE SHOOTING

TP1 : C114 (MAIN_CLK_26MHz)

MT6162 (U101)

BSI1_CS0

+1V8_VIO_MTK

PGND

1

B1

EN

VINT

GND2

C106 39p

1

C2

1

D1

2

1u

BSI1_DATA BSI1_CS1 C105

2

DATA1

BSI1_CLK CLK

F1 DATA0 E2

C103

VDD_28b

L2

1u

1u

1

1

G2

C109

1

2

J2 VSUP2a H1

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6

TP1

B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

0.1u

1u

A12

- 28 -

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

3. TROUBLE SHOOTING

3.1.1.3 Checking RF signal path(PAM) START

Check TP1(L104) at U102 Check if there is any major difference referring To Figure 3.1.1(b). Is any signal detected at that point?

No Check anything

Yes Check TP2 at U102 Check if there is any major difference referring To Figure 3.1.1(c). Is any signal detected at that point?

No

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

No

Yes

Yes Replace U102

Is any signal detected at that point?

No Check anything

Yes PAM is OK. See next page to check DPX

LGE Internal Use Only

The Problem may be Logic part Refer to Logic troubleshoot

- 29 -

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3. TROUBLE SHOOTING

TP2(B5): C115 TP2(B1): C163 SKY77589 (U102)

TP2(B8): C117 TP2(B2): C113

TP3:R103 TP4:R104

TP5:R105

TOP Side

TP1:L104

BOT Side

LGE Internal Use Only

- 30 -

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3. TROUBLE SHOOTING

TRX_B1

2.2n

0.5p

28 27 26 25 24 23

TP2(B1)

1 2 3 4 5 6 7 8

PGND1 PGND2 PGND3 PGND4 PGND5 PGND6

TRX4 TRX3 TRX2 TRX1 VRAMP TXEN MODE GND9

U102

9 10 11 12 13 14

29 30 31 32 33 34

GND1 GND2 GND3 GND4 GND5 GND6 GND7 GND8

44

PGND16 43 PGND15 42 PGND14 41 PGND13

PGND7 PGND8 PGND9

100n

TP1

22 21 20 19 18 17 16 15

40

PGND12 39 PGND11 38 PGND10

35 36 37

C111

GND12 GND11 ANT GND10 TRX6 TRX5

L108

TX_HB_IN TX_LB_IN BS2 BS1 VBATT VCC

L104

TP3

VBATT C126 C127

C128

6.8p 1n

22u

R103

TP4

1K

R104

1K

R105

1K

ANT_SEL0 ANT_SEL1 ANT_SEL2

TP5

TP2(B8)

L112 12n

LGE Internal Use Only

C115

100p

C117

100p

C113

100p

L110

L113

12n

DNI

- 31 -

TP2(B5) TRX_B5_G850 TRX_B8_G900 TRX_B2_G1900

TP2(B2)

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

3. TROUBLE SHOOTING

Figure 3.1.1 (b)

Figure 3.1.1 (c)

LGE Internal Use Only

- 32 -

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

3. TROUBLE SHOOTING

3.1.1.4 Checking RF signal path (FEM)

START

Check TP1 at DPX Check if there is any major difference referring To Figure 3.1.1(b) Is any signal detected at that point?

No

Check anything point

Yes

No

Is any signal detected at that point?

Replace FL103

Yes All WCDMA_B1/B2/B5/B8 Rx check is complete. If the phone sill do not work ,replace main board

LGE Internal Use Only

- 33 -

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

3. TROUBLE SHOOTING

DPX (FL103) B5

TP1(B5): L121 TP1(B1): C160

DPX(FL105) B1 DPX(FL102) B2

DPX(FL106) B8

TP1(B8): L132

TP1(B2): L137

TOP Side

B5 TRx / G850 Rx L121

FL103

6p

6

TRX_B5_G850 TP1(B5): L121

L122

18n

5.6n

C150

2 4 5

ANT

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

881.5MHz

LGE Internal Use Only

- 34 -

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

3. TROUBLE SHOOTING

B1 TRx

FL105 C160

TRX_B1 TP1(B1): C160

8.2p

6

C163

L128

DNI

2.7n

ANT

RX1 RX2 TX

2 4 5

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

2140MHz

B8 TRx / G900 Rx L132 3.9n

6

TRX_B8_G900 TP1(B8): L132

DNI

L133

C173

6.8n

2 4 5

FL106 ANT

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

942.5MHz

B2 TRx / G1900 Rx FL102 C137

TRX_B2_G1900

6

ANT

TP1(B2): L137 L117

2.2n

DNI

C139

LGE Internal Use Only

100p

- 35 -

2 4 5

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

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

3. TROUBLE SHOOTING

Figure 3.1.1 (b)

Figure 3.1.1 (b)

LGE Internal Use Only

- 36 -

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

3. TROUBLE SHOOTING

3.2 WCDMA Tx Part 3.2.1 WCDMA_ Tx B1/B2/B5/B8 START

WCDMA B1/B2/B5/B8 Tx TEST SETUP - Test Channel : 10700 / 9800/ 44407 / 3013 - Sector Power : -55 dBm

1. Check DC Power Supply Circuit

2. Check MT6162 XO

3. Check PA

4. Check DPX

5. Check PAM

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.

LGE Internal Use Only

- 37 -

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

3. TROUBLE SHOOTING

DPX B5 (FL103) DPX B1 (FL105)

SKY77589 (U102)

MT6162 (U101)

DPX (FL106) B8

DPX (FL102) B2

TOP Side

LGE Internal Use Only

- 38 -

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

3. TROUBLE SHOOTING

3.2.1.1 Checking DC Power supply circuit

START

Check TP1(C109) +1V8_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP2(C103) +2V85_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP3(C118) +2V8_VTCXO_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

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

LGE Internal Use Only

- 39 -

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

3. TROUBLE SHOOTING

TP3: C118 (+2V8_VTCXO_MTK )

MT6162 (U101)

TP2: C103 (+2V85_VRF_MTK ) TP1 : C109 (+1V8_VRF_MTK )

BSI1_CS0

+1V8_VIO_MTK C106

2

1

39p

BSI1_CLK

BSI1_DATA BSI1_CS1 C105

2

1

1

PGND

GND2

EN

B1

C2

D1

VINT

DATA1

F1 DATA0 E2

CLK

VDD_28b

G2

TP1

J2 VSUP2a H1

L2

1

TP2 1u

1u

1

C103 C109

1

2

1u

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6 B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

1u

0.1u

TP3

A12

- 40 -

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

3. TROUBLE SHOOTING

3.2.1.2 Checking MT6162 XO circuit

START

Check TP1(C114) Is it 26MHz?

YES

XO circuit is Ok . See next page to check RF signal path.

NO Replace U801 and then check TP1(C122)

YES Is it similar ?

XO circuit is Ok . See next page to check RF signal path.

NO Replace Main B/D

LGE Internal Use Only

- 41 -

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

3. TROUBLE SHOOTING

TP1 : C114 (MAIN_CLK_26MHz)

MT6162 (U101)

BSI1_CS0

+1V8_VIO_MTK

PGND

1

B1

EN

VINT

GND2

C106 39p

1

C2

1

D1

2

1u

BSI1_DATA BSI1_CS1 C105

2

DATA1

BSI1_CLK CLK

F1 DATA0 E2

C103

VDD_28b

L2

1u

1u

1

1

G2

C109

1

2

J2 VSUP2a H1

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6

TP1

B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

0.1u

1u

A12

- 42 -

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

3. TROUBLE SHOOTING

3.2.1.3 Checking B1 / B2 / B5 / B8 TX PA

START

Check TP1 at U103/U104 Check if there is any major difference referring To Figure 4.2.1.4 Is it similar ?

No Check anything point

Yes

Check TP2 at U103/U104 Check if there is any major difference referring To Figure 4.2.1.4 Is it similar ?

Yes PAM circuits OK See next page

No

Check TP3 at U103/U104 Whether it is higher than 1.5V

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Replace U103/U104

LGE Internal Use Only

- 43 -

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

3. TROUBLE SHOOTING

TP1(B8): C161 TP1(B5): C152

TP2(B5): L124

PAM (U103) B1/B5

TP3(B2/B8): C154 TP2(B1): C166 TP3(B1/B5): C135

TP1(B1): L136 TP2(B8): L134

PAM (U104) B2/B8

TP2(B2): C140

TP1(B2): L135

TOP Side

LGE Internal Use Only

- 44 -

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

3. TROUBLE SHOOTING

+3V4_VWPAM_MTK

C135 0.1u

1 2 3 4 5 6 7

L136

3GTX_B1 PA_R0 PA_ON_B1_EN 100n

15

2.2n

C145

C146

C144

100p

100p

100p

C180

C181

DNI

DNI

TP1(B1)_RF IN

33p

1

2

2

1

C164

PA_ON_B5_EN 3GTX_B5

2.2u

VEN_LB RFIN_LB VBATT RFIN_HB NC VMODE VEN_HB

C133

1p

RFOUT_LB GND2 VCC RFOUT_HB CPL_IN GND1 CPL_OUT

C132

L124

49.9

L123

14 13 12 11 10 9 8

PGND

1.8n

DNI

VBATT

U103

R111

C151

TP1(B5)_RF IN

TP3(B1/B5)

TP2(B5)_RF out

L129

TP2(B1)_RF out

8.2n C166

2

1

8.2n

+3V4_VWPAM_MTK

TP3(B2/B8) 2 C154

1

L134

2.2u

1

22p

15p

22n

18n

C174

C175

VBATT

U104 14 13 12 11 10 9 8

RFOUT_LB GND2 VCC RFOUT_HB CPL_IN GND1 CPL_OUT

PA_ON_B8_EN

12p

R109

27

27

3GTX_B8 L135

PA_R0 PA_ON_B2_EN

C158 R108 C140

TP1(B8)_RF IN

1 2 3 4 5 6 7

15

TP2(B8)_RF out

VEN_LB RFIN_LB VBATT RFIN_HB NC VMODE VEN_HB

100n

C134

PGND

2

C156 2.2u

C167

C169

C168

100p

100p

100p

1.5n

3GTX_B2

C178

C179

DNI

DNI

TP1(B2)_RF IN

PDET

R110 36 L118 0.5p

C141 5.6n

LGE Internal Use Only

TP2(B2)_RF out

- 45 -

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

3. TROUBLE SHOOTING

TP1_RF IN

TP2_RF out

Figure 3.2.1.4

LGE Internal Use Only

- 46 -

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

3. TROUBLE SHOOTING

3.2.1.4 Checking RF signal path (DPX)

START

Check TP1 at DPX Check if there is any major difference referring To Figure 3.1.1(b) Is any signal detected at that point?

No

Check anything point

Yes

No

Is any signal detected at that point?

Replace FL/102/103/105/106

Yes All WCDMA_B1/B2/B5/B8 Rx check is complete. If the phone sill do not work ,replace main board

Figure 3.1.1 (b)

LGE Internal Use Only

- 47 -

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

3. TROUBLE SHOOTING

DPX (FL103) B5

TP1(B5): L121 TP1(B1): C160

DPX(FL105) B1 DPX(FL102) B2

DPX(FL106) B8

TP1(B8): L132

TP1(B2): L137

TOP Side

B5 TRx / G850 Rx L121

FL103

6p

6

TRX_B5_G850 TP1(B5): L121

L122

18n

5.6n

C150

2 4 5

ANT

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

881.5MHz

LGE Internal Use Only

- 48 -

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

3. TROUBLE SHOOTING

B1 TRx

FL105 C160

TRX_B1 TP1(B1): C160

8.2p

6

C163

L128

DNI

2.7n

ANT

RX1 RX2 TX

2 4 5

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

2140MHz

B8 TRx / G900 Rx L132 3.9n

6

TRX_B8_G900 TP1(B8): L132

DNI

L133

C173

6.8n

2 4 5

FL106 ANT

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

942.5MHz

B2 TRx / G1900 Rx FL102 C137

TRX_B2_G1900

6

ANT

TP1(B2): L137 L117

2.2n

DNI

C139

LGE Internal Use Only

100p

- 49 -

2 4 5

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8 3 9 7

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

3. TROUBLE SHOOTING

3.2.1.5 Checking RF signal path (PAM)

START

Check TP1(L104) at U102 Check if there is any major difference referring To Figure 3.1.1(b). Is any signal detected at that point?

No Check anything

Yes Check TP2 at U102 Check if there is any major difference referring To Figure 3.1.1(b). Is any signal detected at that point?

No

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

No

Yes

Yes Replace U102

Is any signal detected at that point?

No Check anything

Yes PAM is OK. See next page to check DPX

LGE Internal Use Only

The Problem may be Logic part Refer to Logic troubleshoot

- 50 -

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

3. TROUBLE SHOOTING

TP2(B5): C115 TP2(B1): C163 SKY77589 (U102)

TP2(B8): C117 TP2(B2): C113

TP3:R103 TP4:R104

TP5:R105

TOP Side

TP1:L104

BOT Side

LGE Internal Use Only

- 51 -

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

3. TROUBLE SHOOTING

TRX_B1

2.2n

0.5p

28 27 26 25 24 23

TP2(B1)

1 2 3 4 5 6 7 8

PGND1 PGND2 PGND3 PGND4 PGND5 PGND6

TRX4 TRX3 TRX2 TRX1 VRAMP TXEN MODE GND9

U102

9 10 11 12 13 14

29 30 31 32 33 34

GND1 GND2 GND3 GND4 GND5 GND6 GND7 GND8

44

PGND16 43 PGND15 42 PGND14 41 PGND13

PGND7 PGND8 PGND9

100n

TP1

22 21 20 19 18 17 16 15

40

PGND12 39 PGND11 38 PGND10

35 36 37

C111

GND12 GND11 ANT GND10 TRX6 TRX5

L108

TX_HB_IN TX_LB_IN BS2 BS1 VBATT VCC

L104

TP3

VBATT C126 C127

C128

6.8p 1n

22u

R103

TP4

1K

R104

1K

R105

1K

ANT_SEL0 ANT_SEL1 ANT_SEL2

TP5

TP2(B8)

L112 12n

LGE Internal Use Only

C115

100p

C117

100p

C113

100p

L110

L113

12n

DNI

- 52 -

TP2(B5) TRX_B5_G850 TRX_B8_G900 TRX_B2_G1900

TP2(B2)

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

3. TROUBLE SHOOTING

Figure 3.1.1 (b)

LGE Internal Use Only

- 53 -

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

3. TROUBLE SHOOTING

3.3 GSM Rx Part 3.3.1 GSM850/900/DCS/PCS Rx START

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

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

LGE Internal Use Only

- 54 -

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

3. TROUBLE SHOOTING

DPX GSM850 (FL103)

MT6162 (U101) DPX (FL106) GSM900

SKY77589 (U102)

SAW (FL101) GSM1800

DPX (FL102) GSM1900

TOP Side

LGE Internal Use Only

- 55 -

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

3. TROUBLE SHOOTING

3.3.1.1 Checking DC Power supply circuit

START

Check TP1(C109) +1V8_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP2(C103) +2V85_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP3(C118) +2V8_VTCXO_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

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

LGE Internal Use Only

- 56 -

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

3. TROUBLE SHOOTING

TP3: C118 (+2V8_VTCXO_MTK )

MT6162 (U101)

TP2: C103 (+2V85_VRF_MTK ) TP1 : C109 (+1V8_VRF_MTK )

BSI1_CS0

+1V8_VIO_MTK C106

2

1

39p

BSI1_CLK

BSI1_DATA BSI1_CS1 C105

2

1

1

PGND

GND2

EN

B1

C2

D1

VINT

DATA1

F1 DATA0 E2

CLK

VDD_28b

G2

TP1

J2 VSUP2a H1

L2

1

TP2 1u

1u

1

C103 C109

1

2

1u

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6 B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

1u

0.1u

TP3

A12

- 57 -

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

3. TROUBLE SHOOTING

3.3.1.2 Checking MT6162 XO circuit

START

Check TP1(C114) Is it 26MHz?

YES

XO circuit is Ok . See next page to check RF signal path.

NO Replace U801 and then check TP1(C122)

YES Is it similar ?

XO circuit is Ok . See next page to check RF signal path.

NO Replace Main B/D

LGE Internal Use Only

- 58 -

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

3. TROUBLE SHOOTING

TP1 : C114 (MAIN_CLK_26MHz)

MT6162 (U101)

BSI1_CS0

+1V8_VIO_MTK

PGND

1

B1

EN

VINT

GND2

C106 39p

1

C2

1

D1

2

1u

BSI1_DATA BSI1_CS1 C105

2

DATA1

BSI1_CLK CLK

F1 DATA0 E2

C103

VDD_28b

L2

1u

1u

1

1

G2

C109

1

2

J2 VSUP2a H1

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6

TP1

B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

0.1u

1u

A12

- 59 -

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

3. TROUBLE SHOOTING

3.3.1.3 Checking RF signal path (PAM)

START

Check TP1(L104) at U102 Check if there is any major difference referring. Is any signal detected at that point?

No Check anything

Yes

Check TP2 at U102 Check if there is any major difference referring. Is any signal detected at that point?

No

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

No

Yes

Yes Replace U102

Is any signal detected at that point?

No Check anything

Yes PAM is OK. See next page to check DPX

LGE Internal Use Only

The Problem may be Logic part Refer to Logic troubleshoot

- 60 -

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

3. TROUBLE SHOOTING

TP2(G850): C115 TP2(G900): C117 TP2(G1800): L103 SKY77589 (U102)

TP2(G1900): C113

TP3:R103 TP4:R104

TP5:R105

TOP Side

TP1: L104

BOT Side

LGE Internal Use Only

- 61 -

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

3. TROUBLE SHOOTING

TRX_B1

TP1 1 2 3 4 5 6 7 8

PGND1 PGND2 PGND3 PGND4 PGND5 PGND6

44

PGND16 43 PGND15 42 PGND14 41 PGND13

22 21 20 19 18 17 16 15

TRX4 TRX3 TRX2 TRX1 VRAMP TXEN MODE GND9

U102

9 10 11 12 13 14

29 30 31 32 33 34

GND1 GND2 GND3 GND4 GND5 GND6 GND7 GND8

PGND7 PGND8 PGND9

0.5p

40

PGND12 39 PGND11 38 PGND10

35 36 37

C111

GND12 GND11 ANT GND10 TRX6 TRX5

L108 100n

28 27 26 25 24 23

2.2n

TX_HB_IN TX_LB_IN BS2 BS1 VBATT VCC

L104

VBATT C126 C127

C128

6.8p 1n

22u

TP3 R103

TP4

1K

R104

1K

R105

1K

ANT_SEL0 ANT_SEL1 ANT_SEL2

TP5

LGE Internal Use Only

- 62 -

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

3. TROUBLE SHOOTING

TP2(G900)

L112 12n

C115

100p

C117

100p

C113

100p

L110

L113

12n

DNI

L101

TP2(G850) TRX_B5_G850 TRX_B8_G900 TRX_B2_G1900

TP2(G1900)

1.2n

RX_G1800_INP 2 L103

3

G1 O1 1 IN G2 O2

10p

5 L105

FL101

4

1842.5MHz

L102 8.2n L106

1.2n

RX_G1800_INN

5.6n

TP2(G1800)

LGE Internal Use Only

- 63 -

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

3. TROUBLE SHOOTING

3.3.1.4 Checking RF Flow(SAW filter)

START

Check TP1(L101) for 1800 band at FL101 Check if there is any major difference referring To Figure 3.1.1(a) Is any signal detected at that point? Yes

No Replace FL101

Yes

To Figure 3.1.1(b) Is any signal detected at that point No Check anything point

SAW filter is OK. Replace main B/D.

LGE Internal Use Only

- 64 -

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

3. TROUBLE SHOOTING

TP1: L101 SAW (FL101)

TOP Side

L101

1.2n

RX_G1800_INP 2 L103

3

G1 O1 1 IN G2 O2

10p

5 L105

FL101

4

1842.5MHz

L102

TP1

L106

1.2n

RX_G1800_INN

5.6n

LGE Internal Use Only

8.2n

- 65 -

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

3. TROUBLE SHOOTING

Figure 3.1.1 (a)

LGE Internal Use Only

- 66 -

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

3. TROUBLE SHOOTING

3.4 GSM Tx Part Troubleshooting 3.4.1 GSM850/900/DCS/PCS Tx

DPX (FL103) B5 DPX (FL105) B1

SKY77589 (U102)

MT6162 (U101) DPX (FL102) B2 DPX (FL106) B8

TOP Side

LGE Internal Use Only

- 67 -

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

3. TROUBLE SHOOTING

3.4.1.1 Checking DC Power supply circuit

START

Check TP1(C109) +1V8_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP2(C103) +2V85_VRF_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Check TP3(C118) +2V8_VTCXO_MTK is OK?

No

The Problem may be Logic part Refer to Logic troubleshoot

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

LGE Internal Use Only

- 68 -

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

3. TROUBLE SHOOTING

TP3: C118 (+2V8_VTCXO_MTK )

MT6162 (U101)

TP2: C103 (+2V85_VRF_MTK ) TP1 : C109 (+1V8_VRF_MTK )

BSI1_CS0

+1V8_VIO_MTK C106

2

1

39p

BSI1_CLK

BSI1_DATA BSI1_CS1 C105

2

1

1

PGND

GND2

EN

B1

C2

D1

VINT

DATA1

F1 DATA0 E2

CLK

VDD_28b

G2

TP1

J2 VSUP2a H1

L2

1

TP2 1u

1u

1

C103 C109

1

2

1u

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6 B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

1u

0.1u

TP3

A12

- 69 -

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

3. TROUBLE SHOOTING

3.4.1.2 Checking MT6162 XO circuit

START

Check TP1(C114) Is it 26MHz?

YES

XO circuit is Ok . See next page to check RF signal path.

NO Replace U801 and then check TP1(C122)

YES Is it similar ?

XO circuit is Ok . See next page to check RF signal path.

NO Replace Main B/D

LGE Internal Use Only

- 70 -

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

3. TROUBLE SHOOTING

TP1 : C114 (MAIN_CLK_26MHz)

MT6162 (U101)

BSI1_CS0

+1V8_VIO_MTK

PGND

1

B1

EN

VINT

GND2

C106 39p

1

C2

1

D1

2

1u

BSI1_DATA BSI1_CS1 C105

2

DATA1

BSI1_CLK CLK

F1 DATA0 E2

C103

VDD_28b

L2

1u

1u

1

1

G2

C109

1

2

J2 VSUP2a H1

C108

2

VSUP1 K1 VDD_18

2

1u

+1V8_VRF_MTK

+2V85_VRF_MTK

TOP Side

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3 VDDXO NC4

U101

C112

1n

B5

+2V8_VTCXO_MTK

A6

TP1

B7

XO2 A8 XO1/REFIN B9 VTUNE

C114

GND1

1n

MAIN_CLK_26MHz C118

A10

CLK_MODE B11 VSUP2b

LGE Internal Use Only

SYSCLK

C119

0.1u

1u

A12

- 71 -

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

3. TROUBLE SHOOTING

3.4.1.3 Checking RF signal path (PAM) START

Check TP1(L104) at U102 Check if there is any major difference referring To Figure 4.2.1.4 Is it similar ?

No Check anything point

Yes

Check TP2 at U102 Check if there is any major difference referring To Figure 4.2.1.4 Is it similar ?

Yes PAM circuits OK See next page.

No

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

No

The Problem may be Logic part Refer to Logic troubleshoot

Yes

Replace U102

LGE Internal Use Only

- 72 -

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

3. TROUBLE SHOOTING

TP3:R103 PAM (U102)

TP4:R104 TP5:R105

TP2(850/900) : C176

TP2 (DCS/PCS) : C177

TOP Side

TP1: L104

BOT Side

LGE Internal Use Only

- 73 -

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

3. TROUBLE SHOOTING

TRX_B1

2.2n

TP1 1 2 3 4 5 6 7 8

29 30 31 32 33 34

PGND1 PGND2 PGND3 PGND4 PGND5 PGND6

TX_DCS_PCS

C122

100p

C176

TRX4 TRX3 TRX2 TRX1 VRAMP TXEN MODE GND9

U102

9 10 11 12 13 14

TP2(850/900)

GND1 GND2 GND3 GND4 GND5 GND6 GND7 GND8

44

PGND16 43 PGND15 42 PGND14 41 PGND13

PGND7 PGND8 PGND9

0.5p

22 21 20 19 18 17 16 15

40

PGND12 39 PGND11 38 PGND10

35 36 37

C111

TX_HB_IN TX_LB_IN BS2 BS1 VBATT VCC

L108 100n

GND12 GND11 ANT GND10 TRX6 TRX5

28 27 26 25 24 23

L104

100p

C125

TX_GSM850_GSM900

C129

100p

TP3

VBATT

DNI

C177

C126 C127

C128

6.8p 1n

22u

100p R103

C130 DNI

TP2(DCS/PCS)

TP4

1K

R104

1K

R105

1K

ANT_SEL0 ANT_SEL1 ANT_SEL2

TP5

LGE Internal Use Only

- 74 -

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

3. TROUBLE SHOOTING

4. Trouble Shooting Power 3.5.3.5Power The main power source of D685 is provided by 1 chip which is MT6329 The main power source of D686 is provided by 1 chip which is MT6329 PowerPower ON sequence of D685 is is ON sequence of D686

VBAT

DDLO VRTC UVLO PWRKEY PWRBB

PWRON

VCORE VPROC VIO18 VIO28/VM12_INT VA1/VA2

VM12_1/VM12_2 VUSB/VTCXO VMC/VMCH RESETB

- 57 LGE Internal Use Only

- 75 -

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

3. TROUBLE SHOOTING

START

No

Battery voltage higher than 3.6V?

Change or charging the Battery

Yes No

Press PWR Key TP1: R706 high to low?

Check POWER_KEY FPCB

Yes No

Check MT6329 Core (L301) Voltage level?

L301 (Check MT6329)

Yes No

Check MT6329 AP (L302) Voltage level?

L302(Check R322)

Yes No

Check MT6329 IO (L303) Voltage level?

L303(Check PM8058)

Yes No Check MT6329 RTC CLOCK

R322(Check MT6577)

Yes Check Battery connector (CN601)

No

Change MT6329 And Return to Start

Yes END

LGE Internal Use Only

- 76 -

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

3. TROUBLE SHOOTING

POWER & Lock KEY 1

FEED

1 MBV62562001 ANT701 FEED

1K

PWR_ON_SW_N

2

1.2V

VBATT

100K

2mm

1

R617

2

VTREF

PWR KEY(R706) TP1 1

ZD701

2

1 MBV62562001 ANT702

R706

BATT_TEMP_ADC

1

R618 1K

CN601

FGN_IC

G1 5

For MTK Fuel Gauge

1 2

2 ZD602 VA601

C618

C619

C620

47p

6.8p

1u

C621 47u

6

3

R620

4

20m

G2

BATTERY CONNECTOR(CN601) R623 100

LGE Internal Use Only

- 77 -

4.7K

R622

BATT_ID_PULLUP

BATT_ID

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

3. TROUBLE SHOOTING

F12

L301

VCORE_1 F13 VCORE_2 E12 VCORE_3

Core DC/DC INDUCTOR(L301)

L302

2.2u

10n

AP DC/DC INDUCTOR(L302) VAPROC_FB

L303

2.2u

L304

1

D301

2

VBATT

4.7u

+3V4_VWPAM_MTK 2

C12

D12

LGE Internal Use Only

L305 1

2.2u 2

+1V8_VRF_MTK C339

4.7u 2

H12

C337

1

VRF18_FB

+1V8_VIO_MTK

IO DC/DC INDUCTOR(L303)

J13

VRF18

4.7u

A13

VPA_1 K13 VPA_2 VPA_FB

C336

2

G12

2

1 C334

+1V35_PROC_MTK

4.7u

C333

E10

VIO18_1 G13 VIO18_2

2

1

C14

VIO18_FB

4.7u

C332

B12

VPROC_1 D13 VPROC_2 D14 VPROC_3 VPROC_FB

+1V2_CORE_MTK

1

VCORE_FB

2.2u

- 78 -

1

2.2u

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

3. TROUBLE SHOOTING

AP DC/DC INDUCTOR(L302)

Core DC/DC INDUCTOR(L301)

BATTERY CONNECTOR(CN601) IO DC/DC INDUCTOR(L303)

BOT Side

PWR KEY Clip

PWR KEY(R706) TP1

TOP Side

LGE Internal Use Only

- 79 -

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

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 flows into the main battery Troubleshooting Check Point - Connection of the TA or u-USB cable

4.7u C625

VBATT 0.1u

1u 1n

BAT A5

C5 SDA C4 SCL

THM B5

C616 47m

CS A4

B3 IRQB

2.2u

1u C624

PG1 A1 PG2 A2

1u

C626

1u C623

C622

1u

2

U606

L602

LX1 B1 LX2 B2

C617

C615 4.7K R619

A3 VICHG B4 I2CIN

1

BYP C1

D4 SFO D3 PVL D5 AVL C3 GND

CHARGER_IRQ_B

BST C2

R621

D1 DC1 D2 DC2

C614

VCHG_LDO_4V9

U606(Charger IC)

2.2u

+1V8_VIO_MTK

VCHG_OVP_IN

- Main battery

I2C_SENSOR_SDA I2C_SENSOR_SCL

10V

U606

LGE Internal Use Only

- 80 -

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

3. TROUBLE SHOOTING

START

Check the Connection of uUSB and battery

No Change I/O connector

Connection OK?

Yes No Is the uUSB Cable voltage 4.9V (or 5.0V)

Change TA (or uUSB Cable)

Yes Is it charging properly After turning on?

Yes END

No Change the Charger IC ( U606 )

Yes END

Connection OK?

No Change the Main PCB

LGE Internal Use Only

- 81 -

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

3. TROUBLE SHOOTING

3.7 USB GND

CN10000 10

8 1

6

2 3

START

7

4 5

11

9

Check the Connection of uUSB

No Change I/O connector( SUB FPCB CN10000)

Connection OK?

Yes No Check Connector( SUB FPCB CN10001)

Main PCB & Sub FPCB Connection OK?

Yes No Change Sub FPCB

Is the signal ok for USB+ & - ?

Yes CN1001

Change the Main PCB

USB_DP USB_DN SPK_LP SPK_LN SPK_RP SPK_RN

END

LED_B LED_G LED_R VCHG_OVP_IN

LGE Internal Use Only

- 82 -

1

30

2

29

3

28

4

27

5

26

6

25

7

24

8

23

9

22

10

21

11

20

12

19

13

18

14

17

15

16

USB_ID VMIC MIC_N MIC_P KCOL1_F KROW1_F

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

3. TROUBLE SHOOTING

3.8. Audio 3.8.1 Overview 3.8 Audio

3.8.1 Overview

Audio Block Diagram Audio Block Diagram

MT6620 (Connectivity)

MT6575 (AP)

MIC1 MIC2

MIC1 MIC2

EAR_L/R Headphone AMP

LGE Internal Use Only

3.5 pi SPK Boost AMP

HP L/R HS

FM RADIO

RCV

- 83 -

Dual SPK

SPK Boost AMP

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

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

Yes

Hear the sound to the Speaker?

Yes

No Change Speaker Module?

No Check Lower FPCB and Main PCB. (C508,C507,C506,C505, FB504,FB502,FB501,FB503, L1001~L1004)Speaker Sound OK?

Yes

No Change Main Board

END

LGE Internal Use Only

- 84 -

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

3. TROUBLE SHOOTING

U502 C507,508 FB502,504

U501 C506,505 FB501,503

Speaker Module

L1001~L1004

LGE Internal Use Only

- 85 -

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

3. TROUBLE SHOOTING

L501

1

2

2.2u

VBATT C501

C509 C510

SW

D3 IND2 IN+

0

B2 B3 D4 C3

DNI

SPK_AMP_R_EN

A2

U501

GAIN AGC ENB END

C502

A1

10u

PVDD

47n 47n

VBAT

C506 C505

A3

OUT+ B1

FB501

60

OUT- C1

FB503

60

SPK_RP SPK_RN

FB501,503 GND1 GND2 GND3 GND4

HPH_R

B4

PVOUT

C506,505

10u

C513

C514

33p

33p

A4C2C4D1

L502

1

2

2.2u

VBATT C503

0

C511

C512

DNI

SPK_AMP_L_EN

B2 B3 D4 C3

GAIN AGC ENB END

U502

C504

A1

10u

PVDD

D3 IND2 IN+

A2

PVOUT

47n 47n

VBAT

C508 C507

A3

FB502,504

OUT+ B1

FB502

60

OUT- C1

FB504

60

GND1 GND2 GND3 GND4

HPH_L

B4

SW

C507,508

10u

SPK_LP SPK_LN C515

C516

33p

33p

A4C2C4D1

SPEAKER1 SPEAKER2 L1003,L1004

L1001,L1002 L1001

SPK_LP SPK_LN

LGE Internal Use Only

1 L1002 1

33n 1 33n

2 1 2

FEED

FEED

SPK_RN

ANT10001

SPK_RP

ANT10003

- 86 -

L1003

33n

1 L1004

33n

1

1 2 1 2

FEED

ANT10000

FEED

ANT10002

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

3. TROUBLE SHOOTING

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

START

Check the Receiver soundand check receiver wire.

Yes

Hear the sound to the Receiver? Re-assemble the Receiver

No Receiver Contact is OK?

No

Yes Yes

Change Receiver Module. Can you hear a sound?

No

Check main board part FB505,FB506

Yes

No Change Main Board

END

LGE Internal Use Only

- 87 -

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

3. TROUBLE SHOOTING

Check Contact Status

FB505, FB506

TOP Side

In case of No Receiver sound, not only Receiver fault but Mic fault. You must check first voice recording test. After voice recording you can hear a recording sound, receiver path or parts is something wrong.

LGE Internal Use Only

- 88 -

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

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 mode or Voice recording.

Check Mic hole & rubber to make the voice signal?

Yes

No Reconnect or change FPCB connector. Voice signal OK?

Yes

No Check parts about Mic Bias Mic works well?

Yes

No

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

Yes

No Change Main Board

END

LGE Internal Use Only

- 89 -

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

3. TROUBLE SHOOTING

Check Main Mic hole.

Check C250, C252 and VMIV voltage level (C251)

TOP

LGE Internal Use Only

- 90 -

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

3. TROUBLE SHOOTING

3.8.5 2nd Mic 2nd 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)

Check Mic hole & rubber to make the voice signal?

Yes

No Check parts about Mic Bias Mic works well?

Yes

No Yes

Change Mic (MIC501) Mic works well?

No

Change MT6577(U201). Mic works well?

Yes

No Change Main Board

END

LGE Internal Use Only

- 91 -

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

3. TROUBLE SHOOTING

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

2nd Mic Hole

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

TOP

LGE Internal Use Only

- 92 -

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

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 via speaker although headset insert

Yes

Change Ear Jack Connector. Sound play via headset?

No No

Check the left signal and detection line short when headset inserted?

Yes Change MT6577(U201). Mic works well?

Yes

No

Change Main Board

END

LGE Internal Use Only

- 93 -

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

3. TROUBLE SHOOTING

Case A. Disable detected headset insert.

Ear Jack Connector

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

TOP LGE Internal Use Only

- 94 -

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

3. TROUBLE SHOOTING

Case B. No Sound from Headset

START

Didn’t play sound via headset although headset insert

Change Ear Jack Connector. Sound play via headset?

Yes

No Check TPA6136(U503) and peripheral circuits Works well?

Yes

No

Check MT6577(U201). Works well?

Yes

No

Change Main Board

END

LGE Internal Use Only

- 95 -

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

3. TROUBLE SHOOTING

Case B. No Sound from Headset

U503

TOP VBATT

C517 2.2u

U503 1u

C521

1u

C520

1u

+1V8_VIO_MTK

INL-

D4 C4

INR-

D2 D1

GAIN

HPVDD GND

B3 B1

INL+ OUTL OUTR

U503

A3 D3

EAR_L EAR_R

INR+

HI-Z

C3 Headset_AMP_EN

EN

C518

A4 B4

A1

HPVSS

1u

SGND

HPH_R

C519

VDD

A2

HPH_L

CPP CPN

B2 C1

C522 1u

C523 2.2u

C2 C524

2

0

DNI

R503

1u

HP_AMP_SGND

100K

R505

R502

1

2

2

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 LGE Internal Use Only

- 96 -

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

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.

6 AXIS SENSOR +1V8_VIO_MTK +3V0_SENSORS_MTK I2C_COMMON_SDA

12

PS

CSB

SDI

U604

SCK VDDIO

INT2

GND3

DRDY

GND2

4

INT1

5

COMPASS_DRDY

3

SDO

GND1

3AXIS_INT

2

INT3

1

13

1

14

R608

VDD

7

100K

6

2

11

I2C_COMMON_SCL

10 9 8

2

2

C610

C609 1

LGE Internal Use Only

- 97 -

100n

1

100n

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

3. TROUBLE SHOOTING

START

Check the 6 XIS sensor function

Yes

Function is OK?

END

No Yes

6XIS -NG?

END

No Change the 6 AXIS Sensor IC(U604)

Yes

6 AXIS Sensor function is OK?

END

No Change the main board

Yes

6 AXIS Sensor function is OK?

LGE Internal Use Only

- 98 -

END

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

3. TROUBLE SHOOTING

U604

BOT

LGE Internal Use Only

- 99 -

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

3. TROUBLE SHOOTING

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

START

Send Key click & Phone number click & Call connected

Object moved at the Proximity sensor

Yes

LCD off?

END

No Check +3V_PROX_AMBIENT(TP1) & I2C_SENSOR_SDA & SCL & PROX__INT

Yes

Output work well?

END

No Change the main board

Yes

Function is OK?

LGE Internal Use Only

- 100 -

END

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

3. TROUBLE SHOOTING

Sensor Power: TP1 (C607)

TOP

+3V0_SENSORS_MTK

1

10K

R603

2

+1V8_VIO_MTK

I2C_SENSOR_SDA PROX_INT

1

U603 R627 0

2

1 2 3 4

SDA

VDD

INT

SCL

LDR LEDK

GND LEDA NC

8 7

1

6

0

2

I2C_SENSOR_SCL

5 9

2 C607 1

LGE Internal Use Only

R628

- 101 -

2.2u

Sensor Power: TP1 (C607)

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

3. TROUBLE SHOOTING

3.11 Touch Sensor START

Reconnect Touch Module CN406

Yes Change MT6329(U804)

Touch Woks OK ?

No No

Check Power +1V8_VIO_MTKTP1) / +3V0_TOUCH_MTK (TP2) Power is OK?

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

Yes

No

Change Touch Module Touch Works OK?

Yes

No Change Main Board

END

LGE Internal Use Only

- 102 -

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

3. TROUBLE SHOOTING

TOUCH +1V8_VIO_MTK

+3V0_TOUCH_MTK +1V8_VIO_MTK

I2C_SENSOR_SCL I2C_SENSOR_SDA TOUCH_INT

9

3

8

4

7

R412

Touch_Reset

22K

6

TOUCH_ID

1

VA407

1

C434 1u

VA406

CN406

+3V0_TOUCH_ MTK : TP2 (VA407) 2

2

VA403

VA405

1

+1V8_VIO_MTK : TP1 (VA405)

2

VA404

5

R410

10

2

R411

1

10K

TP3(VA403) 0

4.7K

R408

TP4(VA404)

+1V8_VIO_MTK : TP1 (VA405)

+3V0_TOUCH_ MTK : TP2 (VA407)

TP3(VA403)

TP4(VA404)

BOT LGE Internal Use Only

- 103 -

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

3. TROUBLE SHOOTING

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

START

Change MT6329 (U804)

No

Check Power 3.0V Motor Power is OK?

Yes Check Main PCB VB601 Pad. Is it Normal?

Yes

No Change Main Board

END

LGE Internal Use Only

- 104 -

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

3. TROUBLE SHOOTING

MOTOR

MOTOR NON Q-COIN

R615 20 R616

+3V0_VIBR_MTK

18n

VB601

1

1

D602

20

L601

VB601

2 C613 1u

VA602

VB601

TOP LGE Internal Use Only

- 105 -

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

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

Yes Camera is OK ?

END

No No

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

Yes

Change the Main board

No

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

Yes Change the Camera

Camera is OK ?

Yes END LGE Internal Use Only

- 106 -

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

3. TROUBLE SHOOTING

8M MIPI CAMERA +1V2_CAM_DVDD

+2V8_CAM_VCM

MCLK: TP4 (R403 or C419)

+1V8_CAM_VIO

MIPI_CLK: TP5 (FL403)

+2V8_CAM_AVDD

P5

CN402

C419 DNI

24

2

23

3

22

4

21

AVDD: TP2(C424)

VIO: TP1(C423)

19

7

18

8

17

9

16 15

11

14

I2C_COMMON_SCL

12

13

P3

3 4

1 CAM_CLK_N_8M CAM_CLK_P_8M

FL404

1 2 3 4

P1 P2 P3 P4

P8 P7 P6 P5

8 7 6 5

CAM_DATA1_N_8M CAM_DATA1_P_8M CAM_DATA0_N_8M CAM_DATA0_P_8M +2V8_CAM_VCM

9 10

R406 2.2K

TP402

WP

+1V8_CAM_VIO

CAM_RESET_N

VA402

10 I2C_COMMON_SDA

P4

P2

FL403

5 20 MIPI_DATA: TP6 (FL404) 6

P1

G1 G2

CAM_MCLK

0

P6

1 R403

C426

C427

C422

C423

C424

C425

DNI

DNI

2.2u

2.2u

2.2u

2.2u

DVDD: TP3(C425)

MIPI_CLK: TP5 MIPI_DATA: TP6 VIO: TP1 DVDD: TP3

AVDD: TP2 MCLK: TP4

BOT

LGE Internal Use Only

- 107 -

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

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

Yes Camera is OK ?

END

No No

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

Yes

Change the Main board

Change the Camera

Camera is OK ?

Yes END

LGE Internal Use Only

- 108 -

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

3. TROUBLE SHOOTING

+2V8_CAM_AVDD

+1V2_CAM_DVDD

DVDD: TP3(C431)

CAM_CLK_N_1.3M CAM_CLK_P_1.3M CAM_DATA0_N_1.3M CAM_DATA0_P_1.3M

+1V8_CAM_VIO

CN405

AVDD: TP2(C433) I2C_COMMON_SDA I2C_COMMON_SCL

VIO: TP1(C432)

C433

C431

100n

100n

VT_CAM_RESET_N

100n

CAM_MCLK

20 19 18 17 16 15 14 13 12 11

C432

1 2 3 4 5 6 7 8 9 10

ZD401 ZD402 ZD403

VIO: TP1 AVDD: TP2 DVDD: TP3

BOT

LGE Internal Use Only

- 109 -

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

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 key turn the power ON

No Is the circuit Powered ?

Follow the Power ON Troubleshooting

Yes Disconnect and re-connect LCD Connector(CN401)

Yes

LCD display is OK ?

No

Yes Change the LCD Module

Check LCD Power +3V0_LCD_VCI_MTK(TP1), +1V8_LCD_VIO_MTK(TP2), MIPI_CLK (TP3), MIPI_DATA (TP4) LM3639(U404) output LEDA(TP5)

No Change the Main Board

The LCD works

END LGE Internal Use Only

- 110 -

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

MIPI_CLK: TP3 1 24 (FL401) CN401

2

23

D3

D1

D4

D2

20

6

19

+1V8_LCD_VIO_MTK

C410

1

1

VA408

9

16

10

15

11

14

12

13

LCD_MIPI_CLK_N LCD_MIPI_CLK_P LCD_MIPI_DATA1_N LCD_MIPI_DATA1_P +3V0_LCD_VCI_MTK

Power for Analog(3.0V)

TP401

VA409 2

17

2

VCI: TP1 (C411)

1u

1u

LCD_PWM LCD_RESET_N

8

10

7 18 MIPI_DATA: TP4(FL402)

VA410

VIO: TP2 (C410)

FL402

2 1

21

5

LCD_MAKER_ID

4 3

22

4

7 8

3

LED_C2

LCD_MIPI_DATA0_P

FL401

5 6

LED_C1

LCD_MIPI_DATA0_N

1 2

9

6

LEDA

3 4

G2

DDVDL_-5V5

C411

DDVDH_+5V5

G1

5

3. TROUBLE SHOOTING

VBATT

Width : 0.3mm

L402

D401

LEDA

10u L403 C415

C414 1u

1u

LED_OUT: TP5(C414)

10u

C1 EN

LCD_BL_EN

SWB

E4

OVP OUTF1 OUTF2

E2 A2 B2

BLED1 BLED2

D1 E1

FLED1 FLED2

A1 B1

D2 SCL U404 D3 SDA C3 STROBE

I2C_COMMON_SCL I2C_COMMON_SDA FLASH_EN

D4 PWM 100K

R405

100K

R404

LCD_PWM

GND1 GND2 GND3

C2 TX

FLASH_LTD

C416

Width : 0.3mm Width : 0.3mm

10u

LED_C1 LED_C2

VA401

C4 VIN

SWF1 SWF2

A3B3

1

LD401

A4B4E3 2

LGE Internal Use Only

- 111 -

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

3. TROUBLE SHOOTING

MIPI_DATA: TP4 (FL402)

VCI: TP1 (C411)

LEDA: TP5 (C414)

VIO: TP2 (C410) MIPI_CLK: TP3 (FL401)

BOT

LGE Internal Use Only

- 112 -

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

3. TROUBLE SHOOTING

3.15 BT/Wifi

ZD401 C433

BAT700

L807 C718

R715

C431

FL403

C432

J501

ZD801

L805 C817

C609

R301

R608

R302

C610

ZD402

U604

5

ANT801

L806

R628 R627

ZD403 11

CN501

TP6 ANT804

FL404

TP5

VA402

12

13

C427 C426

C840

L812

C827

FL803

C823

C872

C841

C822

C843

C871

C810

C873

ZD703

R708

C808

C845

C807

C847

C846

TP4

C809

FB801 C851

C848

R408

C826

SC215

VA403 VA404 VA405

C802

R410

R412

C434

C709

VA704

VA705

C710

VA701

R705

VA702 VA703 VA706

VA407 R411 VA406

C801

L809

C832

C837

C806

5

C831

C836

C813

R403

C803

X801 C852

24

FB802

FB803

C855

C419

6

10

CN406

J701

C425

R406

C424

C804

TP402

LD401

CN402

C422 C423

C828

TP810

TP801

C333

L302 R320

C263 C262

C332

C330

R813

R815

C331

R814

C328

C870

C326

R817

C327

R816

C329

TP812

1 14

B

D

C342 C340

SC217

E

G

H

C861

R808

C856

R806

C858

C859

C857

R807

R704

C863

R809

C867

SC218 C708

C866

C862

C860

C325

L304

BOT

C865

R810

C335

D301

S701

TP814

C320 C321

P

U803

C868

L813 C864

L

N

C869

C337

R321 R322

K

M

R812

SC216

J

C334

C322 C323 C324

U804

F

C339

L305

C

C336

L303

L301

A

C705

R701

R702

L104

L108

C703

C702

C701

C704

SW102

ZD704

C711

R714 R703

R709

C706

C111

L109

C707

CN601

L107

C110

SW101

TP1 CN201 ZD705

R707

ZD702

TP3

R710

TP2

C503

L502

C508

C512

U502

C511

C507 C516

FB504

FB502

C515

C504

TOP

R717

R811

- 113 -

VA801

LGE Internal Use Only

R716

R718

Copyright © 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes ANT805

TP6 C840

1.5n 1

2

C843

C871

FL803

100p 3

OUT

2

1

GND

FEED

TP5

IN

1

2

ANT804 MBV62562001 1

3. TROUBLE SHOOTING

L812

DNI

1

2

DNI

SPDT for BT&Wi-Fi

Close to Pin A5 100p

WIFI_RX_BT_TRX

1

1

2

C833

L810 DNI

1

2

TP1

GND VCTL1

TP4

C873 1

DNI

3

10K

ANTSEL_0

4 2

4

ANTSEL_1

6

10K

2

R804

1

IN

C838 8.2p

R805

1

DNI

5

2

2 C872

OUT2 1

VCTL2

1n

1

C841

FL802

OUT1

3

2

TP3

C844 8.2p

TP2

2

Close to Pin A3

LGE Internal Use Only

- 114 -

100p

WIFI_TX

1

2

C850

2 C853

2 C854

DNI 1

DNI 1

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

3. TROUBLE SHOOTING

100n

C835 100n

GPIO1_13 GPIO1_12 GPIO1_14 RTCCLK_O RTCCLK VRTC AVSSRTC FM_AUIN_R FM_AUIN_L FM_AUOUT_R FM_AUOUT_L FM_TX_OUT FM_RX_IN_N FM_RX_IN_P I2S_DATA_IN I2S_DATA_OUT I2C_SDA I2C_SCL I2S_CLK I2S_WS NC2 FM_VDD28 FM_VDD13 FM_VSS2 FM_VSS1

U801

L7 L5 G13 F13 H13 J13 L11 L10 N9 N10 N13 M13 L13 J12 J11 H8 D8 H12 H11 M10 N11 M11 N12 L12

TP810 1

Close to MT6577 C829

1u

C830

1u C831

100p

FB802

120

FB803

120

C836

C837

0.1u

0.1u

C839 1u

10p

10p

1u

C847

C848

C849

100n C846

Close to MT6620

10p C845

Close to MT6620

D1 C1 A3 A5 A4 G5 L8 G4 J8 M7 H5 N8 M8 K8 H4 C3 B3 B1 G3 E2 D4 E5 C5 E3 F5 K7 E7 E6 E4 C4 G1 A1 C2 E1 J9 L9 J2 H2 J3 M9 D9 C6 C7 D6 D7 G2

.

AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTSX_1 AVSS13_BTSX_2 GND3 NC1 OSC1_GPS SYNC ECLOCK DUTY_LOSS RF_INN_GPS RF_INP_GPS GPIO1_25 GPIO1_24 GPIO1_26 GPIO1_27 GPIO1_28 AVDD28_OSC AVDD13_SXIF_GPS AVDD13_LNA_GPS AVSS28_OSC AVSS13_RX_GPS AVSS13_SXIF_GPS

RX_5G_IN TX5G_OUT TX2G_OUT RX2G_IP RX2G_IN EEDI EESK EECS CLK_DC SD1_DAT1 SD1_DAT2 SD1_DAT3 SD1_CMD SD1_CLK SD1_DAT0 AVSS33_BA AVSS33_PA_1 AVSS33_PA_2 AVSS13_WIFISX_1 AVSS33_WIFISX_2 AVSS13_BB AVSS13_PLL_1 AVSS13_PLL_2 AVSS13_TRX2G5G GND1 GND2 AVDD13_PLL_1 AVDD13_PLL_2 AVDD13_BB AVDD13_TRX5G AVDD13_WIFISX_1 AVDD33_PA AVDD33_BA AVDD33_WIFISX_2 DVDDIO_SDIO1 ANTSEL_4 ANTSEL_3 ANTSEL_2 ANTSEL_1 ANTSEL_0 WLAN_ACT AVSS13_BTSXAFE_1 AVSS13_BTSXAFE_2 AVSS13_BTSXAFE_3 AVSS13_BTSXAFE_4 NC3

C834

A9 B9 B5 B8 A8 E8 B11 D13 E13 H10 E12 B13 A13 F4 F9 G9 G8 G7 C13 C12 A12 C11 A11 B12

3. Make star connection for AVDD13 (Both E6,E7 and E4,C4,G1) 2

2

4

ANTSEL_1 ANTSEL_0

+2V8_VIO_MTK

WF_PA_VCC

WIFI_AVDD13

TP813

TP812

SD1_DAT1 SD1_DAT2 SD1_DAT3 SD1_CMD SD1_CLK SD1_DAT0

WIFI_TX WIFI_RX_BT_TRX

TP811

C851 100n 1

3

1

LGE Internal Use Only

- 115 -

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

3. TROUBLE SHOOTING

START

No

Check the Signal level at TP1 (U801 )

Replace U801

Yes No Check the signal level at TP2 (U801)

Replace U801

Yes No Replace U801

Check the signal level at TP3 (U801) Yes No Check the signal level at TP4 (FL802)

Replace FL802

Yes No Check the signal level at TP5(FL803)

Replace FL803

Yes No Check the Antenna Clip (ANT804)

Replace ANT804

Yes

BT-WiFi will work properly

LGE Internal Use Only

- 116 -

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

3. TROUBLE SHOOTING

3.16 GPS Part

ZD401 C433

BAT700

L807 C718

R715

FL403

C432

C431

J501

ZD801

L805 C817

C609

R301

R608

R302

C610

ZD402

U604

5

ANT801

L806

R628 R627

ZD403 11

CN501

ANT804

FL404

VA402

12

13

C427 C426

C840

FL803

C823

C822

L812

C827

C841

TP1C872 C873

ZD703

C845

C807

C847

C846

C851

C808

R708

C809

FB801

C843

C871

L809

C832

C810 C813

C803

C848

R408

C826

R410

R412

C434

VA403 VA404 VA405

C802

VA704

C709

VA705

C710

VA701

R705

VA702 VA703 VA706

VA407 R411 VA406

C801

C831

C836

C837

C806

5

SC215

FB802

FB803

R403

C852

24

C855

C419

X801 X801 26MHz 7L26002009

6

10

CN406

J701

C425

R406

C424

C804

TP402

LD401

CN402

C422 C423

C828

TP810

TP801

C333

L302 R320

C263 C262

C332

C330

R813

R815

C331

R814

C328

C870

C326

R817

C327

R816

C329

TP812

1 14

B

D

C342 C340

SC217

E

G

H

C861

R808

C856

R806

C858

C859

R704

C857

R807

SC218 C708

C866

C867

C863

R809

C325

BOT

C862

C860

C335

L304

C865

R810

P

D301

S701

TP814

C320 C321

U803

C868

L813 C864

L

N

C869

C337

R321 R322

K

M

R812

SC216

J

C334

C322 C323 C324

U804

F

C339

L305

C

C336

L303

L301

A

C705

R701

L104

L108

C703

C702

C701

C704

SW102

ZD704

C711

R714 R703

L109

C706

C111 R709

C707

CN601

R702

L107

C110

SW101

CN201 ZD705

ZD702

C503

C508 C516

FB504

R716

C507

FB502

C515

C504 R717

R718

R811

Copyright © 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes VA801

- 117 -

R707

U502

C511

LGE Internal Use Only

R710

L502 C512

ANT805

3. TROUBLE SHOOTING

ANT801

C433

BAT700

TP3

L807 R715

C431

FL403

C432

TP2

J501

ZD401

ZD801

L805 C817

R301

C609

R302

R608

C718

CN405

C610

ZD402

U604

11

ANT801

L806

R628 R627

ZD403

CN501

ANT804

FL404

10

VA402

12

13

C427 C426

C840

C810

L812

C813

C827

FL803

C823

C872

C841

C822

C843

C871

L809

C832

C873

ZD703

C845

C807

C846

C847

C808

R708

C809

FB801 C851

C848

R408

C826

VA403 VA404 VA405

C802

R410

R412

C434

C709

VA704

VA705

C710

VA701

R705

VA702 VA703 VA706

VA407

SC215

C801

C831

C836

C837

C806

5

R411 VA406

C803

R403

C852

24

FB803

C855

C419

FB802

FL803 1575.42MHz X801 Filter

6

10

CN406

J701

C425

R406

C424

C804

TP402

LD401

CN402

C422 C423

C828

TP810

TP801

C333

L302 R320

C332

C330

1 14

E

C340

G

H

BOT

C856

C861

R808

C857

R806

C858

R704

C859

C708

R809

C867

SC218

C863

R807

C866

C862

C860

C325

L304

C865

R810

C619

C618

C335

D301

S701

TP814

C320 C321

P

U803

C868

L813 C864

L

N

C869

C337

R321 R322

K

M

R812

SC216

J

C334

C322 C323 C324

U804

F

C339

L305

D

C336

L303

C

C342

C410

C411 TP401

B

SC217

VA410 VA408 VA409

CN401 13

L301

A

L401

R813

R815

C331

R814

C328

C870

C326

R817

C327

R816

C329

24

TP812

C263 C262

C705

C621

R701 C706

C707

SW102

L109

L104

C704

L108

C703

C702

C701

R703

TP4

L107

C110

TP6

ZD704

C111 R709

C711

TP5

R714

R618

R620

VA601

CN601

R702

SW101

CN201 ZD705

R707

C503

C508

U502

C511

R811

VA801

Copyright © 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes ANT805

C516

R716

C507

FB504

FB502

C515

C504

- 118 -

ZD702

C512

R717

LGE Internal Use Only

R710

L502

TOP

R718

ANT801 MBV62562001 1

3. TROUBLE SHOOTING

FEED

TP2

GND

FL801 3 G3 4 1 OUT IN G2 G1 5 2

100p

1

C817

TP3

1

L805

L806 ZD801

6.8n

100p

TP4

L807 1

DNI

5.6n

C819 DNI

2

2

1

1575.42 MHz

2

2

L804

33p

C818

1 2 .

+2V8_TCXO_LDO

TP5 L802

3n 1

2

L803

12

2

C815

C816

18p

0.1u

1

R803 1K

2

3 2

GND S_D

RF_IN

1

1

VDD

FIL_OUT

C821

5

4.7n

1

2

4 1

U802

RF_INP_GPS

L808 DNI 2

GPS_LNA_EN

TP6

C825 6.8p

LGE Internal Use Only

Near To LNA

- 119 -

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

3. TROUBLE SHOOTING

Close to Pin A9 C826

C827

C828

10p

100n

100n

OSC1_GPS GPS_SYNC

RF_INP_GPS

+2V8_TCXO_LDO GPS_AVDD13 C834

C835

100n

100n

DVDDIO_SD2 AVDD33_BTTX AVDD13_BTRX AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTSX_1 AVSS13_BTSX_2 GND3 NC1 OSC1_GPS SYNC ECLOCK DUTY_LOSS RF_INN_GPS RF_INP_GPS GPIO1_25 GPIO1_24 GPIO1_26 GPIO1_27 GPIO1_28 AVDD28_OSC AVDD13_SXIF_GPS AVDD13_LNA_GPS AVSS28_OSC AVSS13_RX_GPS AVSS13_SXIF_GPS

U801

1u

10p C848

C849

10p C847

100n C846

Close to MT6620

10p C845

Close to MT6620

D1 C1 A3 A5 A4 G5 L8 G4 J8 M7 H5 N8 M8 K8 H4 C3 B3 B1 G3 E2 D4 E5 C5 E3 F5 K7 E7 E6 E4 C4 G1 A1 C2 E1 J9 L9 J2 H2 J3 M9 D9

.

K9 B6 B7 A9 B9 B5 B8 A8 E8 B11 D13 E13 H10 E12 B13 A13 F4 F9 G9 G8 G7 C13 C12 A12 C11 A11 B12

RX_5G_IN TX5G_OUT TX2G_OUT RX2G_IP RX2G_IN EEDI EESK EECS CLK_DC SD1_DAT1 SD1_DAT2 SD1_DAT3 SD1_CMD SD1_CLK SD1_DAT0 AVSS33_BA AVSS33_PA_1 AVSS33_PA_2 AVSS13_WIFISX_1 AVSS33_WIFISX_2 AVSS13_BB AVSS13_PLL_1 AVSS13_PLL_2 AVSS13_TRX2G5G GND1 GND2 AVDD13_PLL_1 AVDD13_PLL_2 AVDD13_BB AVDD13_TRX5G AVDD13_WIFISX_1 AVDD33_PA AVDD33_BA AVDD33_WIFISX_2 DVDDIO_SDIO1 ANTSEL_4 ANTSEL_3 ANTSEL_2 ANTSEL_1 ANTSEL_0

+1V8_VIO_MTK BT_AVDD33 BT_AVDD13

2

ANTSEL_1 ANTSEL_0

WF_PA_VCC

WIFI_AVDD13

+2V8_VIO_MTK

TP813

TP812

SD1_DAT1 SD1_DAT2 SD1_DAT3 SD1_CMD SD1_CLK SD1_DAT0

WIFI_TX WIFI_RX_BT_TRX

TP811

C851 100n 1

+2V8_TCXO_LDO

OSC1_GPS

C852

1n

2

X801

7L26002009

OUTPUT GND

VCC GND_NC

4 1

2 C855

26MHz

TP1

LGE Internal Use Only

3

1

- 120 -

1u

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

3. TROUBLE SHOOTING

START

No

Check the Signal level at TP1 (X600 )

Replace X600

Yes No Check the voltage at TP5 , +2.8V?

The Problem may be Logic part Refer to Logic troubleshoot

Yes No Replace U601

Check the signal level at TP6 (U601) Yes No Check the signal level at TP4 (FL600)

Replace FL600

Yes No Check the Antenna Clip TP2 (ANT601)

Replace ANT601

Yes GPS will work properly

LGE Internal Use Only

- 121 -

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

3. TROUBLE SHOOTING

3.17 FM Radio

L503,R515,L504

470K

1

R507

2

+1V8_VIO_MTK

HS_JACK_DET

EAR_L EAR_R FM_ANT

R516

1

L503

2

47K

TOP

100n

L503

2

L504,R513 L504

2

LGE Internal Use Only

- 122 -

C534

C533

1 100n

2

R513 DNI

1

47p

1

47p

1

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

3. TROUBLE SHOOTING

START

No

Check the ear-jack condition Good?

Replace ear-jack

Yes No

Check the components condition Good? (R515,L504,L503)

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

Yes No

Check Bias Voltage Good?

Replace U801

Yes FM will work properly

LGE Internal Use Only

- 123 -

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

3. TROUBLE SHOOTING

3.18 IRRC TP2: LD601 (+2V8_IrRC_LDO) TP3 (IRRC_TX) TP4 (LINE_OUT_IRRC) TP1: C530(+2V8_IrRC_LDO)

TOP

LGE Internal Use Only

- 124 -

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

3. TROUBLE SHOOTING

R601

IRRC_TX

2

1

C

GND

VCC

A

Y

1

0

6 5 4

1 C612

2

0.1u

R612 300

2 1

3

Q602

2

2

ZD601

1

1K

1

B

1K

R613

Q601

R614

3

2

1 2 3

1

U605

LINE_OUT_IRRC

2

2 100K

TP607

R624

TP4 (LINE_OUT_IRRC)

LD601

+2V8_IrRC_LDO

1

R610

4.7u C611

1

4.7u

1

TP3 (IRRC_TX) 2

1

1

+1V8_VIO_MTK

2

3.3

2

TP2: LD601 (+2V8_IrRC_LDO)

C628

+2V8_IrRC_LDO

1

2

+2V8_IrRC_LDO

TP1: C530(+2V8_IrRC_LDO) RP101K282D VDD CE

U608 1

VOUT 2 GND

5

VBATT IrRC_LDO_EN

PGND

4 3

2 1

LGE Internal Use Only

C629 1u

- 125 -

2

C630

1

1u

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

3. TROUBLE SHOOTING

START

Yes Check for whether TP1 is 0 V

Replace U608

No

Check TP2 Is it right?

Yes

Replace LD601

No Yes Check TP3 right?

Yes Check TP4 right?

No

No

Entire PCB looks being damaged Replace U605

LGE Internal Use Only

- 126 -

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

4. DOWNLOAD

4. DOWNLOAD This document is draft version, so the contents will be updated after registering the final one. TOOL INFORMATION TOOL VERSION

DLL NAME

USB DRIVER

Please Check the Version to “B2B” H/W Name

Part No.

Software

D/L Cable

LGE Internal Use Only

- 127 -

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

4. DOWNLOAD

LGD686

LGD686

LGE Internal Use Only

- 128 -

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

4. DOWNLOAD

LGD686

LGD686

LGE Internal Use Only

- 129 -

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

4. DOWNLOAD

LGE Internal Use Only

- 130 -

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

4. DOWNLOAD

LGD686

LGD686

LGE Internal Use Only

- 131 -

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

4. DOWNLOAD

LGE Internal Use Only

- 132 -

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

4. DOWNLOAD

LGE Internal Use Only

- 133 -

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

4. DOWNLOAD

LGE Internal Use Only

- 134 -

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

4. DOWNLOAD

LGE Internal Use Only

- 135 -

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

4. DOWNLOAD

LGE Internal Use Only

- 136 -

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

4. DOWNLOAD

LGE Internal Use Only

- 137 -

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

4. DOWNLOAD

LGE Internal Use Only

- 138 -

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

4. DOWNLOAD

LGD686

LGD686 LGD686AT-00-V10a-SSV-XXX-JUN-03-2013+0.tot

LGD686

LGE Internal Use Only

- 139 -

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

4. DOWNLOAD

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

LGD686 LGD686

LGE Internal Use Only

- 140 -

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

4. DOWNLOAD

LGD686 LGD686

LGE Internal Use Only

- 141 -

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

4. DOWNLOAD

LGD686 LGD686

LGE Internal Use Only

- 142 -

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

4. DOWNLOAD

LGD686 LGD686

LGE Internal Use Only

- 143 -

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

5. BLOCK DIAGRAM

5. BLOCK DIAGRAM [LG-D686] HW Diagram (Dual SIM) [L90_D685] HWBlock Block Diagram (Dual SIM) 5.5” TFT LCD

DSV

2G TX

TDP/N

MAIN

RF I/F

ANT

2G DCS SAW FILTER

(960x540) BSI

BL Booster/ Flash Driver

Touch Screen

MT6162

I2C0

26MHz

I2C1

(RF Transceiver)

Main Camera (8M AF MIPI) Camera FLASH

SPDT MIPI I/F

Front Camera

I2C2

(1.3M FF I2C)

DDRAM

8Gb LPDDR2

DQM/S

8GB eMMC

MSCD

3,140mAh

Motor

3G DUAL PA SKY77758

GPS ANT

MT6620

PCM

(Connectivity)

BT/WiFi ANT

SPDT (BT/WIFI)

26MHz

SD CARD SD I/F

PWR BTN

(TX MODULE)

GPS LNA

I2S

32.768kHz

BATTERY

SKY77589

SKY77758

3G QUAD BAND

MT6577 (AP)

3G DUAL PA

MIC1

MIC1

MIC2

MIC2

PMIC

EAR_L/R

AMP

(MT6329)

HPLP/HPRP

FM RADIO

Audio

3.5 pi Booster Dual AMP Booster Dual AMP

HSN/HSP

Quick memo BTN

JTAG

JTAG NML

5Pin u-USB

I2C1

Dual SPK

RCV Accelerometer

IrRC

Compass

Volume BTN Switching Charging IC

I2C0 I2C0

Proximity

Dual SIM

USIM

USB

LGE Internal Use Only

- 144 -

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

5. BLOCK DIAGRAM

[LG-D686] RF Block Diagram RF Block Diagram MT6162

Coupler

W900 DUPLEXER

SPDT

PAM W1900 DUPLEXER

XO1_REFIN

TX_LB1

TX_HB2

MT6577

VCTCXO 26MHz

AFC

REF_CLK CLK DATA0 DATA1 EN

CLK26M BSI1_CLK BSI1_DATA BSI1_CS1 BSI1_CS0

Coupler

Tx Module SKY77589 Included GSM PAM

W850 DUPLEXER

RX_BBIP RX_BBIN

PAM W2100 DUPLEXER

RX_BBQP RX_BBQN TX_HB3

TX_IN TX_IP

LNA4N LNA4P

TX_QN TX_QP

TX_HB_IN TRX1

TX_EN VRAMP

GSM850_GSM900_TX DCS_PCS_TX SAW FILTER

Rx_DCS

LNA6N LNA6P

GPA_PA_EN

Thermistor

VDD_1a VDD_28a VDD_28b

BPI_BUS10 BPI_BUS11 BPI_BUS12 BPI_BUS13 VM0 AUX_IN3

MT6329 PMIC

BPI_BUS5 APC

GPA_PA_RAMP

MODE BS VSW_EN

LGE Internal Use Only

PA_R0

TX_LB2 TX_HB1

UL_I_N UL_I_P UL_Q_N UL_Q_P PA_ON_B2_EN PA_ON_B1_EN PA_ON_B5_EN PA_ON_B8_EN

LNA4N LNA4P LNA5N LNA5P LNA3N LNA3P TX_LB_IN

DL_I_P DL_I_N DL_Q_P DL_Q_N

ANT_SEL0~2

- 145 -

BPI_BUS0 BPI_BUS1 BPI_BUS2

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

5. BLOCK DIAGRAM

Block Diagram : Memory, MICRO-SD, USIM [LG-D686] Memory, MICRO-SD, USIM MT6577 Micro SD CLK CMD DATA[0:3] DET VDD

SD_CLK SD_CMD SD_DATA[0:3] SD_DETECT +3V0_MICRO_SD

8GB + 8Gb MCP H9TP65A8JDACPR-KGM

MSDC1_CLK

ED_CLK ED_CLK_B

MSDC1_CMD

ECKE ECS0_B ECS1_B

MSDC1_DATA[0:3] MSDC1_INSI VMCH

EA[0:9] ED[0:31]

EDQS[0:3]

USIM1

nEDQS[0:3] DQM[0:3]

CLK1 IO1 RST1 VCC1

USIM1_CLK USIM1_DATA USIM1_RESET_N +3V0_VSIM_VCC

VCC2

USIM2_RESET_N +3V0_VSIM2_MTK

DQS[0:3]_T DQS[0:3]_C DM[0:3]

eMMC_DATA[0:7] eMMC_RST eMMC_CMD eMMC_CLK

DAT[0:7] RST CMD CLKM

SCLK2 SIO2 SRST2 VIO18

VSIM2

VMC VM12_1

LGE Internal Use Only

DDRAM_DQM[0:3]

DQ[0:31]

eNAND x8 8GB

CLK

RST2

DDRAM_DQS_[0:3]_N

CA[0:9]

VSIM

CMD

IO2

DDRAM_DQS_[0:3]_P

CKE0 CS0_n CS1_n

SRST

USIM2 USIM2_CLK

DDRAM_DATA_[0:31]

CLK_C

SIO

RSTB

USIM2_DATA

DDRAM_ADDRESS_[0:9]

LPDDR2X32 8Gb 2CS CLK_T

SCLK

DAT[0:7]

CLK2

DDRAM_CLK_P DDRAM_CLK_N DDRAM_CLK_EN DDRAM_CS[0]_N DDRAM_CS[1]_N

- 146 -

+1V8_VIO_MTK +3V3_eMMC_MTK +1V2_VLPDDR2_MTK

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

5. BLOCK DIAGRAM

HW Block Diagram : LCD(MIPI 5.5”, LGD) / Touch

[LG-D686] HW Block Diagram : LCD(MIPI 5.5”, LGD) / Touch MT6577

+2V8_LCD_VCC_MTK

VCAMD

+2V8_LCD_VCI_MTK

VCAMA

+1V8_LCD_VIO_MTK

VCAM_IO

DSV_EN

SCL_1 SDA_1 KP_ROW5

DPIG7

TDP[0:1] TDN[0:1] TCP TCN

LRSTB

LSCE1B

EINT6 SDA_0 SCL_0

VIO18 VGP2

LGE Internal Use Only

DVDD_+5V5

DSV

DVDD_- 5V5

I2C_COMMON_SCL I2C_COMMON_SDA LCD_BL_EN

Backlight +Camera Flash (LM3639)

LCD_PWM

EMI Filter EMI Filter

LCD_MIPI_DATA[0:1]_P

LED_A LED_C1 LED_C2 LCD_PWM

5.5″ LCD LGD (MIPI)

LCD_MIPI_DATA[0:1]_N LCD_MIPI_CLK_P LCD_MIPI_CLK_N

LCD_RESET_N

LCD_MAKER_ID

TOUCH_INT I2C_SENSOR_SDA I2C_SENSOR_SCL

TOUCH Synaptics S7020

+1V8_VIO_MTK +3V_TOUCH_MTK

- 147 -

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

5. BLOCK DIAGRAM

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

CAM_MCLK

CMMCLK

RCP RCN

RDP[0:1]

MT6577

RDN[0:1]

MIPI Switch

CAM_CLK_P

EMI Filter

CAM_CLK_N

CAM_DATA[0:1]_P

EMI Filter

CAM_VCM_PWDN

CMRST

CAM_RESET_N

KP_ROW7 KP_ROW3

8M AF CAMERA MIPI

CAM_DATA[0:1]_N

CMPDN

KP_ROW6

MCLK

I2C_COMMON_SCL

SCL

I2C_COMMON_SDA

SDA

FLASH_EN

KP_ROW2

OUT1

4 LDO

OUT2 OUT3 OUT4

1.3M FF CAERA MIPI

+2V8_CAM_AVDD +1V2_CAM_DVDD +1V8_CAM_VIO +2V8_CAM_VCM

STORBE SCL SDA TX

FLASH_LTD

Battery

LGE Internal Use Only

Backlight+ Camera Flash (LM3639)

FLED1 FLED2

+VBAT

- 148 -

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

5. BLOCK DIAGRAM

HW Block Diagram : Audio [LG-D686] HW Block Diagram : Audio

MT6577 VMIC

VIO18

VMIC

IN

SPK_AMP_R_EN

EN

IN

MIC_P AU_VIN0_P MIC_N

SPK_AMP_L_EN

EN

AU_VIN0_N

SPK amp TPA2015D1 SPK amp TPA2015D1

OUT+ OUT-

OUT+ OUT-

SPK_RP

SPK

SPK_RN

SPK

SPK_LP SPK_LN

Main MIC

MIC2_P AU_VIN2_P MIC2_N 2nd

AU_VIN2_N

HPLP

MIC HPRP

EARMIC_BIAS

EARMIC_N

INL

HPH_R

INR

Headset_AMP_EN

EARBIAS

EARMIC_P

HPH_L

AU_VIN1_P

HSP

AU_VIN1_N

HSN

Headphone amp TPA6136

EAR_L EAR_R

EN

RCV

RCV_P RCV_N

Headset

LGE Internal Use Only

- 149 -

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

5. BLOCK DIAGRAM

ock Diagram SENSOR [LG-D686]:HW Block Diagram : SENSOR MT6577 EINT0 KP_ROW6 KP_ROW7

SCL_0 SDA_0

KP_ROW4

3AXIS_INT

INT1

I2C_COMMON_SCL

SCL

I2C_COMMON_SDA

SDI

I2C_SENSOR_SCL I2C_SENSOR_SDA COMPASS_DRDY

DRDY

Hall IC BU52031NVX

HALLIC_INT OUT

EINT1

EINT3

6 Axis Sensor BMC-150

PROXIMITY SENSOR APDS-9130-200

PROX_INT

INT

SCL SDA

+3V0_SENSORS_MTK VCAM_AF

+1V8_VIO_MTK VIO18

LGE Internal Use Only

- 150 -

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

5. BLOCK DIAGRAM

HW Block Diagram : WLAN/BT/GPS/FM Interface [LG-D686] HW Block Diagram : WLAN/BT/GPS/FM Interface

FMINL FMINR I2S1_CK

I2S

I2S1_WS I2S1_DAT DAICLK

PCM

DATPCMIN DAIPCMOUT BTSSYNC

UTXD3 URXD3

UART

MSDC3_DAT MSDC3_CMD MSDC3_CLK

NLD8 MSDC2_DAT1

BT,WIFI,GPS INTERRUPT

EINT2 ENT1

FM_AUOUT_R

FM_AUOUT_L

FM_AUOUT_L

I2S_CLK

3.5 Ear Jack

FM_RADIO

FM_RX_IN_P FM_RX_IN_N

I2S_CLK

I2S_WS

I2S_WS

I2S_DATA_IN

BT_WIFI

I2S_DATA_IN WIFI_RX_BT_TRX

PCM1CLK

PCM1CLK

PCM1OUT

PCM1OUT

PCM1IN

PCM1IN

PCM1SYNC

PCM1SYNC

UART1_UTXD3 UART1_URXD3

SD2_DAT1 SD2_DAT3

SD1_DAT SD1_CMD SD1_CLK

SD1_DAT SD1_CMD SD1_CLK

26MHz GPS_SYNC PMU_EN BGF_INT_B WIFI_INT_B SYSRST_B_6620

DAIRSTB 32K_OUT

32.768kHz

LGE Internal Use Only

MT6620

FM_AUOUT_R

Ear-jack

MT6577 FM RADIO

RTCCLK

RX2G_IP TX2G_OUT

ANTSEL_0 ANTSEL_1

Diplexer

WIFI_TX

SAW

ANTSEL_0 ANTSEL_1

GPS

LNA

RX_INP_GPS

SAW

GPS_LNA_EN

OSC1_GPS SYNC PMU_EN BGF_INT_B WIFI_INT_B

VBAT

VIO_MTK_1V8/2V8

MT6329

SYSRST_S RTCCLK

- 151 -

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

6. CIRCUIT DIAGRAM

1

TRX_B1

TRX5

0

0

1

0

TRX6

0

0

0

1

TX_DCS_PCS

TX_HB

1

0

1

1

TX_GSM850_GSM900

TX_LB

1

0

0

1 C122

TX_DCS_PCS

100p

C176

G1 O1 IN G2 O2 5

L102 8.2n

4

L106

1842.5MHz

L105

RX_G1800_INN

TRX4 TRX3 TRX2 TRX1 VRAMP TXEN MODE GND9

PGND1 PGND2 PGND3 PGND4 PGND5 PGND6

22 21 20 19 18 17 16 15

GSM_PA_RAMP GSM_PA_EN

R102 1K C120

39p

LNA8N LNA8P

BSI1_CS0

+1V8_VIO_MTK

BSI1_DATA BSI1_CS1

BSI1_CLK

+1V8_VRF_MTK

PGND

GND2

1

B1

EN

D1

VINT

F1

DATA0 E2 DATA1

G2

CLK

J2

VSUP2a H1 VDD_28b

L2

C2

39p

C106

C105

C109 1u

1u

C108

C103

C114

1n

MAIN_CLK_26MHz C118

C119

VSUP2b

GND1 PDET

0.1u

1u

A12 B13

PDET

B17

C128

6.8p 1n

22u

C123

C124

1u

1u

100p R103

DNI

1K

R104

1K

R105

1K

ANT_SEL0

+2V85_VRF_MTK

C177

C126 C127

C130

WCDMA

+2V8_VTCXO_MTK

A6

A10 CLK_MODE B11

VBATT

100p

SYSCLK

B5

GSM_UMTSTX_IN GSM_UMTSTX_IP GSM_UMTSTX_QN GSM_UMTSTX_QP

TX_IN C18 TX_IP D17 TX_QN E18 TX_QP

100p

DNI

C129

1n

VTUNE

C125

TX_GSM850_GSM900

VSUP1 K1 VDD_18

U101

LNA7N LNA7P

V17 U16

40

PGND12 39 PGND11 38 PGND10

C112

B7 XO2 A8 XO1/REFIN B9

LNA6N LNA6P

U14 V15

C121

39p

NC4

LNA5N LNA5P

U12 V13

RX_G1800_INN RX_G1800_INP

VDDXO

LNA4N LNA4P

U10 V11

RX_B2_G1900_INN RX_B2_G1900_INP

R101 1K

LNA3N LNA3P

U8 V9

RX_B8_G900_INN RX_B8_G900_INP

A2

REFCLK1 B3 REFCLK2 A4 REFCLK3

LNA2N LNA2P

U6 V7

RX_B1_INN RX_B1_INP

1.2n

5.6n

U102

1u

1u

FL101

GND6 GND7 GND8

0 1

1

1

A16 B15 A14

1 0

1

10p

LNA1N LNA1P

U4 V5

RX_B5_G850_INN RX_B5_G850_INP

TX_HB3

1 1

0

L103

3

H17 TX_HB1 G18 TX_HB2 F17

0 0

TRX4

2

ANT_SEL1 ANT_SEL2

TX_DCS_PCS 3GTX_B2 3GTX_B1

TRX3

NA

44

PGND16 43 PGND15 42 PGND14 41 PGND13

TX_LB1 TX_LB2

TRX2

TRX_B8_G900_RX

29 30 31 32 33 34

RX_G1800_INP

K17 J18

0 0

GND1 GND2 GND3 GND4 GND5 GND6 GND7 GND8

1.2n

3GTX_B5_B8 TX_GSM850_GSM900

0 0

0 1

TRX_B2_G1900

TRX_B5_G850_RX

1 2 3 4 5 6 7 8

ANT_SEL0 ANT_SEL1 ANT_SEL2

0 0

L101

GND5

G1800

100n

0.5p

9 10 11 12 13 14

Stand-by TRX1

C111

VSUP3

PA_EN

L108

L18

0.5p

Mode

U2 V3

G4 4

L107

N18 VDD_28a M17

G3 3

T1

2

COMMON

ANT

DNI

10p 10p

GND3

1

12n

10p

C107

TRX_B1

2.2n

10p

C104

GND4

1

ENWY0005601

L104

C102

TRX_B2_G1900

U18

ANT

SW102

100p L109

PGND7 PGND8 PGND9

G3

2.2n

C101

TRX_B8_G900

35 36 37

C110

L113

28 27 26 25 24 23

4

G1 G2

GND12 GND11 ANT GND10 TRX6 TRX5

3

TX_HB_IN TX_LB_IN BS2 BS1 VBATT VCC

2

L110

TRX_B5_G850

R2

12n

SW101

100p

RX_BBIP P1 RX_BBIN N2 RX_BBQP M1 RX_BBQN

L112

100p

C113

NC1 NC2 NC3

Tx Module

100p

C117

T17 R18 P17

MAIN_ANT

C115

UMTSRX_QP UMTSRX_QN

UMTSRX_IP UMTSRX_IN

RF_MAIN

+2V85_VRF_MTK

6. CIRCUIT DIAGRAM

+3V4_VWPAM_MTK C148

B5 TRx / G850 Rx

RX_B5_G850_INN

+2V8_VTCXO_MTK

L119

GND1 GND2 GND3

RX_B5_G850_INP

C151

3

TX

9 7

GND5 GND4

L123

L124

DNI

1p

49.9

881.5MHz

14 13 12 11 10 9 8

RFOUT_LB GND2 VCC RFOUT_HB CPL_IN GND1 CPL_OUT

VEN_LB RFIN_LB VBATT RFIN_HB NC VMODE VEN_HB

1 2 3 4 5 6 7

PA_ON_B5_EN 3GTX_B5

C155

3GTX_B1 PA_R0 PA_ON_B1_EN

L128

DNI

2.7n

2 4 5

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8

C162

100p

C180

C181

GND

DNI

DNI

3

MAIN_CLK_26MHz

2

26MHz PT101

R107

100K

215K

C142

C143

DNI

0.1u

RX_B1_INN

6.8p

RX_B1_INP C164

3 9 7

33p

L129

2140MHz

TX_SPDT

2

C163

ANT

C144

100p

OUT

VCONT

DNI

1

6

C146

100p

VCC

2

8.2p

C145

1

AFC

2.2n

L126

4.7n

1

C160

TRX_B1

6.8p

L125

FL105

RF_TEMP_ADC L136

15

B1 TRx

X101 1XXA26000FTA

39K

4

1.8n

100n

5.6n

RX1 RX2

R106

VBATT

U103

2.7n

2.2u

2 4 5

L122

18n C150

ANT

0.1u

DNI C149

C133

TRX_B5_G850

C135

L120 33n

1 8

PGND

6

C132

FL103

6p

R111

L121

+2V8_VTCXO_MTK

2.7n

8.2n C166

2

1

8.2n

+3V4_VWPAM_MTK C152

3GTX_B5 100p

DNI

2 4 5

L133

C173

6.8n

ANT

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

C172

1

1

L134

3 9 7

942.5MHz

15p

22n

18n

C174

C175

14 13 12 11 10 9 8

RFOUT_LB GND2 VCC RFOUT_HB CPL_IN GND1 CPL_OUT

100p

100p

6

TRX_B2_G1900

L117 DNI

2 4 5

ANT

RX1 RX2 TX

GND1 GND2 GND3

GND5 GND4

1 8

C138

100p

RX_B2_G1900_INP C140

3

PA_R0 PA_ON_B2_EN

1.5n

C161

2.2u

C167

C169

C168

100p

100p

100p

100p

C157

100p

C159 DNI

3GTX_B5_B8 L127 15n

2.7n

3GTX_B8

3GTX_B2 C183

C178

C179

DNI

DNI

DNI

ANT_BAND_SEL2 C165 100p

C156

900MHz

C153

ANT_BAND_SEL1

Logic Check

ANT_BAND_SEL2

3GTX_B5

1

0

3GTX_B8

0

1

R108

12p

R109

27

27

PDET

R110

9 7

36 L118 0.5p

LGE Internal Use Only

3GTX_B8 L135

3 PORT2

ANT_BAND_SEL1

1 5 4

L114

22n

FL102

C139

PA_ON_B8_EN

C158 L115

GND

1 2 3 4 5 6 7

33n

B2 TRx / G1900 Rx 2.2n

VEN_LB RFIN_LB VBATT RFIN_HB NC VMODE VEN_HB

15

RX_B2_G1900_INN

C137

VBATT

U104

CTL1

22p

100p

RX_B8_G900_INP

C131

2.2u

FL104

C154

C134

33n

DNI

1 8

PORT1

FL106

CTL2

6

PORT3

2 L131

L130 L132 3.9n

6

DNI

2

100n

RX_B8_G900_INN

TRX_B8_G900

2

100p

C182

PGND

B8 TRx / G900 Rx

C171

C141 5.6n

- 152 -

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

6. CIRCUIT DIAGRAM

C205

C206

C262 22u

C204

22u

C203

22u

100n

100n

1

2

1

2

C202

22u

1

22u

C263 1

VAPROC_FB

22u

1

C231

C232

C233

2

1

2

1

C234

MT6329_VAPROC_FB

H12 H16 H21 J10 J13 J16 J19 J20 J22 J24 J8 K14 K18 L14 L15 L16 L17 L18 M14 M15 M16 M17 M18 N13 N14 N15 N16 N17 N18 N19 P13 P14 P15 P16 P17 P18 P19 R13 R14 R15 R16 R17 R18 R19 T13 T14 T15 T16 T17 T18 T19 U13 U14 U15 U16 U17 U19 V13 V14

AF29

PA_ON_B2_EN PA_ON_B1_EN PA_ON_B5_EN PA_ON_B8_EN

AA13 AB14 AC14 AF14 AG15 AH15 AG14 AJ14

BSI1_CLK BSI1_CS0 BSI1_CS1 BSI1_DATA

AF18 AH19 AG19 AF17 AG18 AJ20 AJ17 AF16 AJ18 AJ19 AJ22 AJ23 AH27 AJ25 AK25 AK27 AJ27 AE25 AF25 AF26 AK28

BSI1_CS0 -> EN BSI1_CS1 -> DATA1 BSI1_DATA -> DATA0

PCB_REVISION USB_ID RF_TEMP_ADC C249

VMIC

2 C251 1

EARMIC_BIAS

1u

MIC_N MIC_P EARMIC_N EARMIC_P MIC2_N MIC2_P

C250

1u

1u

C252

1u

C253

1u

C254

1u

C255

1u

C256

1u

HOOK_DETECT

AF27 AF28 51K

51K

R208

R209

1 2

2

AJ28 AJ29

MAIN GND C257

DVDD_NML5

USB_VBUS USB_DP USB_DM USB_VRT CHD_DP CHD_DM

AB29 USB11_DP AC29

USB11_DM SCLK SlO SRST SCLK2 SIO2 SRST2

MEMPLL_TXN

1u

1u

1u C248

1u

100n

C247

C240 1u

Close to MT6575

1st Priority Close to MT6577

A1 A30 AJ1 AK1 AK2 AK30 D17 A17 B18 A16 C15 C16 B26 B23 A11 B7 E17 E16 E24 E20 E12 E9 E23 E19 E13 E10 A20 B16 D19 D7 B21 A19 B20 C19 B13 B15 B14 A14 D15 A13 B19 D16 B17 C20 C23 D24 D23 D25 B25 B24 C27 A26 A22 A24 D21 D20 E21 C24 A23 B22 B12 B11 B10 A10 C12 D12 D11 C11 A9 D8 C8 B8 D9 A7 C7 B9 B28 E26 D28 F29 D29 G29 G27 C28 A28 D30 C30 E29 G30 E27 B29 B30

DDRAM_ADDRESS_[6] DDRAM_ADDRESS_[4] DDRAM_ADDRESS_[5]

DDRAM_CS_[0]_N DDRAM_CLK_EN DDRAM_DQM_[3] DDRAM_DQM_[1] DDRAM_DQM_[0] DDRAM_DQM_[2] DDRAM_CLK_P DDRAM_CLK_N DDRAM_DQS_[3]_P DDRAM_DQS_[1]_P DDRAM_DQS_[0]_P DDRAM_DQS_[2]_P DDRAM_DQS_[3]_N DDRAM_DQS_[1]_N DDRAM_DQS_[0]_N DDRAM_DQS_[2]_N

DDRAM_ADDRESS_[1]

I2C Pull-Up

RVREF DDR3RSTB GND

+0V6_VREF

1/2 VIO

Open

LPDDR1

(TBD)

LPDDR2

1

DDRAM_ADDRESS_[7]

DDRAM_ADDRESS_[0] DDRAM_ADDRESS_[9]

DDRAM_CS_[1]_N

MSDC0_RSTB MSDC0_CMD MSDC0_CLK MSDC0_DAT0 MSDC0_DAT1 MSDC0_DAT2 MSDC0_DAT3 MSDC0_DAT4 MSDC0_DAT5 MSDC0_DAT6 MSDC0_DAT7 MSDC1_SDWPI MSDC1_CMD MSDC1_CLK MSDC1_DAT0 MSDC1_DAT1 MSDC1_DAT2 MSDC1_DAT3 MSDC1_INSI MSDC2_CMD MSDC2_CLK MSDC2_DAT0 MSDC2_DAT1 MSDC2_DAT2 MSDC2_DAT3 MSDC3_CMD MSDC3_CLK MSDC3_DAT0 MSDC3_DAT1 MSDC3_DAT2 MSDC3_DAT3

DVDD_MC1

2

I2C_SENSOR_SCL

2

I2C_SENSOR_SDA

2

I2C_COMMON_SCL

2

I2C_COMMON_SDA

1

+1V8_VIO_MTK

R206 1

4.7K 2

SCL_2

R207 1

4.7K 2

SDA_2

1.2K R205 1.2K

I2C0 I2C1 I2C2

DDRAM_DATA_[25] DDRAM_DATA_[26] DDRAM_DATA_[24] DDRAM_DATA_[29] DDRAM_DATA_[30] DDRAM_DATA_[27] DDRAM_DATA_[31] DDRAM_DATA_[28] DDRAM_DATA_[8] DDRAM_DATA_[15] DDRAM_DATA_[9] DDRAM_DATA_[10] DDRAM_DATA_[12] DDRAM_DATA_[13] DDRAM_DATA_[14] DDRAM_DATA_[11] DDRAM_DATA_[5] DDRAM_DATA_[6] DDRAM_DATA_[3] DDRAM_DATA_[1] DDRAM_DATA_[4] DDRAM_DATA_[2] DDRAM_DATA_[7] DDRAM_DATA_[0] DDRAM_DATA_[22] DDRAM_DATA_[16] DDRAM_DATA_[23] DDRAM_DATA_[19] DDRAM_DATA_[21] DDRAM_DATA_[20] DDRAM_DATA_[17] DDRAM_DATA_[18]

JTAG +1V8_VIO_MTK

1

CN201

14

RESET_IN 2

13

3

12

4

11

5

10

6

9

7

8

JTAG_TDI UTXD4 R211 100

1

2 1M

RTCCLK_GPS 1

C259

JTAG_TRST_N

URXD4

JTAG_TCK

2

JTAG_RTCK

RTCCLK_D

UTXD1_MD

JTAG_TMS

URXD1_MD

SC201

K21

CAM_DATA0_N CAM_DATA0_P CAM_DATA1_N CAM_DATA1_P CAM_CLK_N CAM_CLK_P LCD_MIPI_DATA0_N LCD_MIPI_DATA0_P LCD_MIPI_DATA1_N LCD_MIPI_DATA1_P LCD_MIPI_CLK_N LCD_MIPI_CLK_P

SC202

1

SC203

1

1

SC204

SC205

SC206

SC207

1

1

1

1

SC209

SC210

SC211

SC212

1

JTAG_TDO

1

1

1

SC215

SC216

SC217

1

1

1

OJ203 1

OJ204 1

OJ205 1

OJ206 1

OJ207 1

OJ208 1

SC222 1

SC218

SC221

1

1

SD1_CMD SD1_CLK SD1_DAT0 SD1_DAT1 SD1_DAT2 SD1_DAT3

PMU_EN GPS_LNA_EN

SD_CMD SD_CLK SD_DATA[0] SD_DATA[1] SD_DATA[2] SD_DATA[3] SD_DETECT

eMMC_RST eMMC_CMD eMMC_CLK eMMC_DATA[0] eMMC_DATA[1] eMMC_DATA[2] eMMC_DATA[3] eMMC_DATA[4] eMMC_DATA[5] eMMC_DATA[6] eMMC_DATA[7]

LCD_MAKER_ID

DSV_EN IrRC_LDO_EN

CAM_MIPI_SW_OE_N Touch_Reset LCD_PWM LCD_RESET_N

LCD_PWM CAM_AVDD_LDO_EN CAM_DVDD_LDO_EN CAM_IOVDD_LDO_EN CAM_AF_LDO_EN

SPK_AMP_R_EN SPK_AMP_L_EN Headset_AMP_EN

CAM_MIPI_SW_SEL BATT_ID BATT_ID_PULLUP

RGB_EN

IRRC_TX

CAM_MCLK

PACTRL0 PACTRL1 PACTRL2 PMUCTRL0 PMUCTRL1 SCL_2 SDA_2

CAM_RESET_N

1

DNI R217

VT_CAM_RESET_N

0

2

I2C_SENSOR_SCL I2C_SENSOR_SDA

R216 2

+2V5_AVDD1_MTK

For MT6620 PMU

1 DRAWN BY

LGE Internal Use Only

2.2K

DDRAM_ADDRESS_[3]

L29 M29 M26 N27 L27 K27 N26 N28 P29 N30 M30 L26 J26 K26 K28 K30 K29 J27 N29 J29 H26 K24 J30 H29 J28 AJ3 AH4 AJ4 AH3 AG4 AK3

DPICK DPIDE DPIVSYNC DPIHSYNC DPIR0 DPIR1 DPIR2 DPIR3 DPIR4 DPIR5 DPIR6 DPIR7 DPIG0 DPIG1 DPIG2 DPIG3 DPIG4 DPIG5 DPIG6 DPIG7 DPIB0 DPIB1 DPIB2 DPIB3 DPIB4 DPIB5 DPIB6 DPIB7 LPCE0B LPCE1B LPTE LRSTB LRDB LPA0 LWRB LSCE0B LSCE1B LSA0 LSDI LSCK LSDA T4 N5 L5 M5 T2 U4 R1 R2 N1 M1 P6 N8 R5 T5 P4 N4 P7 U5 P3 P5 N2 P8 N7 P2 N3 M2 L2 T1 K1 K4 J2 K2 K5 J3 K3 V4 U2 V3 U3 V5 V2

PWM3

AB2 PWM1 AB4 PWM2 AB3

DVDD_MC0

DVDD_NML6

DVDD_NML2

DVDD_NML3

DVDD_LCD

SCL_1 SDA_1 CMDAT0 CMDAT1 CMDAT2 CMDAT3 CMDAT4 CMDAT5 CMDAT6 CMDAT7 CMDAT8 CMDAT9 CMVSYNC CMHSYNC CMMCLK CMPCLK CMPDN CMRST CMFLASH PWM4

DVDD_CAM

2.2K R203

R204

1

DDRAM_ADDRESS_[2]

R202

+1V8_VIO_MTK

A29 B27 C29 E28 F30 F27 F28

E3 F3 C2 D2 D1 E2 F2 F1 G1 G2 H4 G5

1

+1V8_VIO_MTK

DDRAM_ADDRESS_[8]

HALLIC_INT

CHARGER_IRQ_B

RESET_IN SRCLKENA

18p

DVDD_NML5

WATCHDOG_RESET

X-TAL_IN C261

AVDD28_RTC

BBWAKEUP

32.768KHz

3AXIS_INT

18p

R213

C260

BGF_INT_B PROX_INT GPS_SYNC HS_JACK_DET TOUCH_INT

X-TAL_OUT

330

AC2 AD2 AE4 AA5 AD4 AE2 AA6 AB5

EINT0 EINT1 EINT2 EINT3 EINT4 EINT5 EINT6 EINT7

DVDD_NML2

DVDD_NML1

SDA_0

AVDD30_VSIM2

K10 K9 C4 C3 B6 B4 A4 A2 E4 B5 D6 A3 B3 B1 E6 E7 E5 B2 D4 K11

AVDD30_VSIM

DVDD_NML3

SPI_MO

FC-135 1

RDN0 RDP0 RDN1 RDP1 RCN RCP DVDD18_MIPITX TDN0 DVDD_MC2 TDP0 DVDD_MC3 TDN1 TDP1 TCN TCP

DVDD18_MIPIRX

AH1 SPI_CLK AF4 SPI_CSN AG3 SPI_MI AG2

X201 2

DVDD_NFI

AG1 SCL_0 AH2

AD26 AC27 AD27 AD28 AD30 AD29

NRNB NCLE NALE NWEB NREB NCEB0 NCEB1

AG25 : star connect to cap gnd

AVDD25_MEMPLL MEMPLL_TXP K22 MEMPLL(DRAM Test Pin) : Normal Open

SYSCLK X-TAL_IN X-TAL_OUT

SIM1 Support HSPA/WCDMA/GSM SIM SIM2 Support only GSM SIM

USIM1_CLK USIM1_DATA USIM1_RESET_N USIM2_CLK USIM2_DATA USIM2_RESET_N

AVDD33_USB

AVDD33_USB11

SYSRST_B SRCLKENA SRCLKENAI PACTRL0 PACTRL1 PACTRL2 PMUCTRL0 PMUCTRL1 SCL_2 SDA_2

5.1K

IDDIG

W30 V29 U29 V30 V28 W29 W27 V27 W26 Y26

CHD_DP CHD_DM

R212

DVDD_NML2

DVDD_NML2

USBH_DP USBH_DM

DVDD_NML6

ICORE

Y29 AA29 AC26 AB26 AA30 AA27 AA26

URXD1 UTXD1 URTS1 UCTS1 URXD2 UTXD2 URTS2 UCTS2 URXD3 UTXD3

AF5

UART1_URXD3 UART1_UTXD3

NLD0 NLD1 NLD2 NLD3 NLD4 NLD5 NLD6 NLD7 NLD8 NLD9 NLD10 NLD11 NLD12 NLD13 NLD14 NLD15

DVDD_EFUSE

WIFI_INT_B

DVDD_EMI

URXD4 UTXD4

FSOURCE

URXD1_MD UTXD1_MD

DVDD_NML4

JTRST_B JRTCK JTCK JTDI JTMS JTDO SWCLKTCK SWDIOTMS

D27

P26 R27 P27 R25 AC5 AE1 AF2 AE3 AD5 AD1

KP_COL0 KP_COL1 KP_COL2 KP_COL3 KP_COL4 KP_COL5 KP_COL6 KP_COL7 KP_ROW0 KP_ROW1 KP_ROW2 KP_ROW3 KP_ROW4 KP_ROW5 KP_ROW6 KP_ROW7

CLK26M RTC_XIN RTC_XOUT 32K_OUT TESTMODE BBWAKEUP

R26 P28

AVSS12N_DAC

AB21 AK16 AK15 AD16 AJ16 AG16

R30 R29 T30 T29 U27 U28 U26 T26

MD 1/2 Data log for Modem Debugging

for Device only mode

AUDREFN

330

AF9 AJ7 AB11 AF8 AH7 AG7 AG8 AJ5 AG6 AC10 AF6 AF7 AJ6 AK6 AH8 AK7

URXD4 UTXD4

+3V3_USB_MTK

HPLP HPRP

AG25 AJ26 J5 AC20 H20 W16 W15 AJ15 W17 W18 V18

+2V8_VTCXO_MTK +2V8_VRTC_MTK +3V0_VSIM_MTK +3V0_VSIM2_MTK +3V3_USB_MTK

0

330

AJ30

2.2u

JTAG_TRST_N JTAG_RTCK JTAG_TCK JTAG_TDI JTAG_TMS JTAG_TDO

UART3 for MT6620 Data log for Debugging UART4 Boot-up selection/Setting USB Download Image, Mass storage

U201

FMINL FMINR

COUT_AVSS12NAVDD18_AUD

C258

FLASH_LTD KCOL6 NFCCLK KROW0 KROW1 RGBCLK FLASH_EN COMPASS_DRDY LCD_BL_EN I2C_COMMON_SCL I2C_COMMON_SDA

UART2 User Define

AVDD25_VBUF

AG29 CF AG30 CF_IN AK29

2

KCOL1 TOUCH_ID

Download Bootloader, META UART1 Product Line test Point

AH30

EA8 EWR# EA10 EA7 EA12 EA11 ERAS# EA2 ECAS# EA0 EA9 nECS1 EA3 EA13 ED25 ED26 ED24 ED29 ED30 ED27 ED31 ED28 ED8 ED15 ED9 ED10 ED12 ED13 ED14 ED11 ED5 ED6 ED3 ED1 ED4 ED2 ED7 ED0 ED22 ED16 ED23 ED19 ED21 ED20 ED17 ED18

AVDD25_VDAC

R214

DOWN

VDAC_OUT AUX_XM AUX_XP AUX_YM AUX_YP AUX_IN0 AUX_IN1 AUX_IN2 AUX_IN3 AUX_IN4 REFN REFP VMIC AU_VIN0_N AU_VIN0_P AU_VIN1_N AU_VIN1_P AU_VIN2_N AU_VIN2_P EARBIAS ACCDET

R215

UP

DVDD_BSI

I2S_CLK I2S_DATA_IN I2S_WS

COL6

1

EA6 EA4 EA5 nECS0 EA1 ECKE0 DQM3 DQM1 DQM0 DQM2 EDCLK nEDCLK EDQS3 EDQS1 EDQS0 EDQS2 nEDQS3 nEDQS1 nEDQS0 nEDQS2 EBA0 EBA1 RVREF DDR3RSTB

EINT8 EINT9 DAICLK DAIPCMIN DAIPCMOUT BTSYNC DAIRSTB I2S0_CK I2S0_DAT I2S0_WS I2S1_CK I2S1_DAT I2S1_WS

HOME

DVDD_BPI

BSI0_CLK BSI0_CS0 BSI0_CS1 BSI0_DATA BSI1_CLK BSI1_CS0 BSI1_CS1 BSI1_DATA

NFC_IRQ PMU_INT PCM1CLK PCM1OUT PCM1IN PCM1SYNC SYSRST_B_6620

ROW1

QUICK

2

NC_1 NC_2 NC_3 NC_4 NC_5 NC_6

Y4 AA1 AA3 AA4 AA2 AB1 Y2 W2 V1 Y6 W5 Y5 W1

ROW0 COL1

100

2

R210

1

1u

1

LINE_OUT_IRRC

DVDD_BPI

HSP

FM_AUOUT_L FM_AUOUT_R

1

DVDD_BPI

AH29 HSN AH28

RCV_N RCV_P

HPH_L HPH_R

BPI_BUS0 BPI_BUS1 BPI_BUS2 BPI_BUS3 BPI_BUS4 BPI_BUS5 BPI_BUS6 BPI_BUS7 BPI_BUS8 BPI_BUS9 BPI_BUS10 BPI_BUS11 BPI_BUS12 BPI_BUS13 BPI_BUS14

C246

AK9 AJ9 AJ8 AF10 AG10 AJ10 AH11 AJ11 AF11 AK10 AG11 AJ12 AG12 AK12 AH12

ANT_SEL0 ANT_SEL1 ANT_SEL2 NFC_FET_0 ANT_BAND_SEL1 GSM_PA_EN ANT_BAND_SEL2

1u

AVSS18_AUD AVSS18_MD AVSS18_MIPI AVSS25_MD AVSS25_MEMPLL AVSS25_PLL AVSS25_VDAC AVSS28_RTC AVSS30_VSIM AVSS33_USB AVSS33_USB11

TDD_TIMINGSYNC

C245

DVDD_BPI

AD11 TDD_AFC_SW AF12

C244

VM0 VM1

+2V5_AVDD2_MTK

R201

1u

AVDD28_DAC

1u

APC

+1V8_VIO_MTK +1V8_VIO_MTK +1V8_VIO_MTK +2V5_AVDD1_MTK

C243

AVDD18_AUD AK24 AVDD18_MD H3 AVDD18_MIPI AK22 AVDD25_MD K23 AVDD25_MEMPLL AK21 AVDD25_PLL AC22 AVDD25_VBUF AK19 AVDD25_VDAC AK18 AVDD28_DAC AH16 AVDD28_RTC AB30 AVDD30_VSIM AE30 AVDD30_VSIM2 AB28 AVDD33_USB AA28 AVDD33_USB11

C241

22u

J4

1

VSS_1 VSS_2 VSS_3 VSS_4 VSS_5 VSS_6 VSS_7 VSS_8 VSS_9 VSS_10 VSS_11 VSS_12 VSS_13 VSS_14 VSS_15 VSS_16 VSS_17 VSS_18 VSS_19 VSS_20 VSS_21 VSS_22 VSS_23 VSS_24 VSS_25 VSS_26 VSS_27 VSS_28 VSS_29 VSS_30 VSS_31 VSS_32 VSS_33 VSS_34 VSS_35 VSS_36 VSS_37 VSS_38 VSS_39 VSS_40 VSS_41 VSS_42 VSS_43 VSS_44 VSS_45 VSS_46 VSS_47 VSS_48 VSS_49 VSS_50 VSS_51 VSS_52 VSS_53 VSS_54 VSS_55 VSS_56 VSS_57 VSS_58 VSS_59

2

E25

1

DVSS18_MIPIRX H5 DVSS18_MIPITX

2

1

VDDK_DVFS_OUT

2

100n

1

100n

2

M20 M21 N20 N21 P20 P21 R20 R21 T20 T21 U20 V20 V21

C230

1

VDDK_DVFS_1 VDDK_DVFS_2 VDDK_DVFS_3 VDDK_DVFS_4 VDDK_DVFS_5 VDDK_DVFS_6 VDDK_DVFS_7 VDDK_DVFS_8 VDDK_DVFS_9 VDDK_DVFS_10 VDDK_DVFS_11 VDDK_DVFS_12 VDDK_DVFS_13

C228

C229

2.2u

C227

1

100n

1

2

100n

Close to 6577 2

100n

2

100n

1

C226

2

22u

1

C225

1

2

2.2u

2

C224

1

C223

C222

2

100n

C221 1u

1

2.2u

1

2

100n

2

G14 G18 H14 H18 J14 J18 K12 K15 K16 K17 L13 M13 N12 P11 P12 R12 T12 U12 U18 V12 V15 V16 V17 V19 W12 W13 W14

M19

2

C201

2

VDDK_1 VDDK_2 VDDK_3 VDDK_4 VDDK_5 VDDK_6 VDDK_7 VDDK_8 VDDK_9 VDDK_10 VDDK_11 VDDK_12 VDDK_13 VDDK_14 VDDK_15 VDDK_16 VDDK_17 VDDK_18 VDDK_19 VDDK_20 VDDK_21 VDDK_22 VDDK_23 VDDK_24 VDDK_25 VDDK_26 VDDK_27

VDDK_VSRAM_1 U21 VDDK_VSRAM_2 V22 VDDK_VSRAM_3

2.2u

2

Close to 6577

F12 F14 F15 F16 F17 F18 F21 F23 F9 G11 G15 G17

N22

1

1

Close to 6577 C220

C218

1

1

2

1

2.2u

C217

C215

C216

100n

1

1

2

100n

1

C208

C207 100n C219

2

1

C242

AK13 AJ13

PA_R0

+1V35_PROC_MTK

AVDD25_VDAC

AC19 3G_VBIAS AB16 AFC Y16

AFC GSM_PA_RAMP

100n

100n

1

DVDD_NFI_1 N23 DVDD_NFI_2

DL_I_N DL_I_P DL_Q_N DL_Q_P UL_I_N UL_I_P UL_Q_N UL_Q_P

2

2

2

DVDD_BPI DVDD_BSI DVDD18_MIPIRX DVDD18_MIPITX DVDD_MC0 DVDD_MC1 DVDD_MC2 DVDD_MC3 DVDD_NML1 DVDD_NML2 DVDD_NML3 DVDD_NML4 DVDD_NML5 DVDD_NML6_1 DVDD_NML6_2 DVDD_CAM DVDD_LCD_1 DVDD_LCD_2 DVDD_LCD_3

AF21 AF20 AH21 AG21 AF23 AG23 AH24 AG24

UMTSRX_IN UMTSRX_IP UMTSRX_QN UMTSRX_QP GSM_UMTSTX_IN GSM_UMTSTX_IP GSM_UMTSTX_QN GSM_UMTSTX_QP

2

100n

C238

2

VDD_EMI_1 VDD_EMI_2 VDD_EMI_3 VDD_EMI_4 VDD_EMI_5 VDD_EMI_6 VDD_EMI_7 VDD_EMI_8 VDD_EMI_9 VDD_EMI_10 VDD_EMI_11 VDD_EMI_12

C212

1

1

C214

2

100n

1

2

100n

C237 100n

C213

1

2

AF13 AB12 H2 J1 R22 R23 P23 AK4 AB8 AB9 AE5 AC9 Y25 U23 V23 K8 N10 N11 P10

1

2

100n

C236 100n

C211

C235 100n

C239

1u

1

2

2

1

2

2

REVB 2

1u

C209

C210

1u

100n

1.8V For LPDDR1 1.2V For LPDDR2

2

1

100n

+2V8_VIO_MTK

+1V2_VLPDDR2_MTK

+1V8_VIO_MTK

+1V8_CAM_VIO

+2V8_VIO_MTK +1V8_VIO_MTK

+1V8_VIO_MTK +3V3_MICRO_IO

MT6577

+1V8_VIO_MTK

+1V8_VIO_MTK

+2V8_VIO_MTK +1V8_VIO_MTK

+1V2_CORE_MTK +1V2_VM12_INT_MTK

- 153 -

User Name

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

6. CIRCUIT DIAGRAM

Revision

R1

R2

ADC Value[V]

EVB

100K

5.6K

0.151136

A

100K

12K

0.305357

B

100K

19.1K

0.457053

2

C3 B9 E1

1

TP301

DDRAM_DATA_[0] DDRAM_DATA_[1] DDRAM_DATA_[2] DDRAM_DATA_[3] DDRAM_DATA_[4] DDRAM_DATA_[5] DDRAM_DATA_[6] DDRAM_DATA_[7] DDRAM_DATA_[8] DDRAM_DATA_[9] DDRAM_DATA_[10] DDRAM_DATA_[11] DDRAM_DATA_[12] DDRAM_DATA_[13] DDRAM_DATA_[14] DDRAM_DATA_[15] DDRAM_DATA_[16] DDRAM_DATA_[17] DDRAM_DATA_[18] DDRAM_DATA_[19] DDRAM_DATA_[20] DDRAM_DATA_[21] DDRAM_DATA_[22] DDRAM_DATA_[23] DDRAM_DATA_[24] DDRAM_DATA_[25] DDRAM_DATA_[26] DDRAM_DATA_[27] DDRAM_DATA_[28] DDRAM_DATA_[29] DDRAM_DATA_[30] DDRAM_DATA_[31]

1

N5 L5 T7 H7

DDRAM_DQM_[0] DDRAM_DQM_[1] DDRAM_DQM_[2] DDRAM_DQM_[3]

B2 C3 B1

PACTRL0 PACTRL1 PACTRL2

A3 E6

2 1M

R322

1

LGE Internal Use Only

100

2

C329

1u

C328

1u

C327

1u

C326

1u

C325

1u

C324

1u

C323

2.2u

C322

2.2u

C321 10u

VDD2_1 VDD2_2 VDD2_3 VDD2_4 VDD2_5 VDD2_6 VSS1 VSS2 VSS3 VSS4 VSS5 VSS6 VSS7 VSS8

2 240 R315

E5 G2 K1 M7 U2 W5 F2 F5 G1 M8 U1 V2 V5 L2

200K

C301 10n

2 1 200K

R304

1 1

1

1 47K

2

47K

47K

R314

47K

R312

R313

2

2

1

1

1 47K

R311

R310

2

+1V8_VIO_MTK

+1V2_VLPDDR2_MTK

2

1

2

1

2

1

2

2

1

1

J1

VDDCA1 L1 VDDCA2 T2 VDDCA3 H1

VSSCA1 M1 VSSCA2 T1 VSSCA3

DM0 DM1 DM2 DM3

CS0_N CS1_N CKE0 CKE1 ZQ

CA0 CA1 CA2 CA3 CA4 CA5 CA6 CA7 CA8 CA9

U3 T3 R3 R2 R1 K2 J2 J3 H3 H2

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]

1

100n

VDD1_1 F1 VDD1_2 V1 VDD1_3 W6 VDD1_4

N7

VPROC_FB

L302

VIO18_1 G13 VIO18_2

SPK2_P SPK2_N

VIO18_FB

L303

2.2u

VRF18_FB

1.2V,300mA 0.9-1.2V,300mA 1.2V,360mA 2.85V,200mA 2.8V,40mA 1.8-2.5V,100mA 2.8V,100mA 1.8/3.0V,100mA 1.3-3.3V,100mA 1.3-3.3V,200mA 1.3-3.3V,400mA 1.3-3.3V,200mA 1.3-3.3V,100mA 3.3V,100mA 1.5-2.8V,200mA

USB_DLN USB_DLP SRCLKEN RESETB PWRKEY PMU_TESTMODE PWRBB SYSRSTB FSOURCE SCK SDA INT DVS1 DVS2

1.3-3.3V,200mA 1.3-3.3V,300mA 1.3-3.3V,100mA 1.3-3.3V,100mA 2.5/2.8V,100mA

PA_SEL0 PA_SEL1 PA_SEL2 BL_PWM HOMEKEY

1.8-2.8V,2mA

VM12_1 VM12_2 VM12_INT VRF28 VTCXO VA1 VIO28 VSIM VSIM2 VMC VMCH VGP VGP2 VUSB VCAMA VCAMA_S VCAM_AF VCAMD VCAM_IO VIBR VA2 VA2_BUF VRTC VRET GND_VREF

4.7u

+1V8_VIO_MTK D301

1

L304

2

VBATT

4.7u

+3V4_VWPAM_MTK 2

C12 H12

C337 L305 1

2.2u 2

D12

+1V8_VRF_MTK C339

4.7u

1

VRF18

C336

A13

2

VPA_FB

2

1 2

VAPROC_FB

J13

U804

+1V35_PROC_MTK

4.7u

C333 10n

VPA_1 K13 VPA_2

VCDT CHR_LDO VDRV ISENSE BATSNS BATON TREF PCH_DET

2

2.2u

C334

E10 G12

SPK1_P SPK1_N

32K_IN

1

C14

VPROC_1 D13 VPROC_2 D14 VPROC_3

BYPASS

+1V2_CORE_MTK

4.7u

C332

1

VCORE_FB

AUD2_P AUD2_N

2.2u

2

AUD1_P AUD1_N

G1 CS+ G2 CSK5

L301

B12

1

ISINK0 ISINK1 ISINK2 ISINK3 ISINK4 ISINK5 BST_GDRV KPLED FLASH

ASW_IN1 N8 ASW_IN2 N6 ASW_OUT

M13 N14 N13 N12 M10 N11 K9 L14 L13

E5

AVDD18_DIG

C330

F6

AVDD18_IO E9 AVDD18

VBAT_LDO5_1 E2 VBAT_LDO5_2

D1

C11

VBAT_LDO4

C5

VBAT_LDO3_1 C6 VBAT_LDO3_2

C7

VBAT_LDO2_1 E8 VBAT_LDO2_2

N9

VBAT_MISC

VBAT_VRF18

H13

G14

VBAT_VIO18_1 H14 VBAT_VIO18_2 J14 VBAT_VPA_1 K14 VBAT_VPA_2

A14

VBAT_VPROC_1 B13 VBAT_VPROC_2 B14 VBAT_VPROC_3 C13 VBAT_VPROC_4

F12

VCORE_1 F13 VCORE_2 E12 VCORE_3

VBI_P VBI_N

A10 C9 B10 E1 F5 E3 B9 A8 C8 C10 A11 B7 B11 B8 F2 F3 A7 B5 A5 B6 G3 G5

1

R320

0

2

J5

+1V2_VLPDDR2_MTK

+3V0_SENSORS_MTK

+3V0_LCD_VCI_MTK +1V8_LCD_VIO_MTK +3V0_VIBR_MTK +2V5_AVDD2_MTK +2V8_VRTC_MTK C340

1u1

2 C342

K2

CHG_DP H3 CHG_DM

2.2u

FOR PI TEST

E7 J2

1

+1V2_VM12_INT_MTK +2V85_VRF_MTK +2V8_VTCXO_MTK +2V5_AVDD1_MTK +2V8_VIO_MTK +3V0_VSIM_MTK +3V0_VSIM2_MTK +3V3_eMMC_MTK +3V3_MICRO_SD +3V3_MICRO_IO +3V0_TOUCH_MTK +3V3_USB_MTK

2

C1 C4

PMUCTRL0 PMUCTRL1

RTCCLK_D

E6

U301

1u

BGA_NC-P14

D3 D2 B3

SCL_2 SDA_2 PMU_INT

1

1

eMMC_DATA[0] eMMC_DATA[1] eMMC_DATA[2] eMMC_DATA[3] eMMC_DATA[4] eMMC_DATA[5] eMMC_DATA[6] eMMC_DATA[7]

1

1u

CHD_DP CHD_DM

P14

BBWAKEUP WATCHDOG_RESET

R321

DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 DQ16 DQ17 DQ18 DQ19 DQ20 DQ21 DQ22 DQ23 DQ24 DQ25 DQ26 DQ27 DQ28 DQ29 DQ30 DQ31

A3 B3 B7 A7 B6 A6 A4 B4

2

1

GND_LDO_4 GND_LDO_5 GND_LDO_6 GND_LDO_7 GND_LDO_8 GND_LDO_9 GND_LDO_10

A2 L2 N2 M4 M3 B4 A4

SRCLKENA RESET_IN PWR_ON_SW_N

FGN_IC

2

C319

1u

K6 M6 G7 H7 J7 K8 H6

VTREF

K3 L3

AVDD18_DIG

2

1

GND_DRV2 GND_DRV1 GND_ISINK_1 GND_ISINK_2 GND_SPK1_1 GND_SPK1_2 GND_SPK2_1 GND_SPK2_2

1

BATT_TEMP_ADC

2

1

L12 M12 M11 K10 M8 M9 K7 M7

VBATT

51K

R319

2.2u

2

1

BGA_NC-A1 BGA_NC-P1

2

1%

C338

2

1

GND_LDO_3

N1 H5 L1 H1 H2 K1 J3 M2

330k 3.3K 1

2

1

A1 P1

M5

P10 P11

2

2

1

F7 GND_LDO_1 G6 GND_LDO_2 J6

1u

P13 P12

1%

2

1

GND_VPROC_1 GND_VPROC_2 GND_VPROC_3 GND_VCORE_1 GND_VCORE_2 GND_VCORE_3 GND_VCORE_4 GND_VIO18_1 GND_VIO18_2 GND_VIO18_3 GND_VRF18_1 GND_VRF18_2 GND_VPA_1 GND_VPA_2

P2 P3

R318

2

1

F8 F9 F10 G8 G9 G10 H8 H9 H10 J8 J9 J10 J12 K12

N3 N4

VBAT_SPK1 VBAT_SPK2

VBAT_VCORE_1 E14 VBAT_VCORE_2

E13 P5 N5

R317

1

DAT0 DAT1 DAT2 DAT3 DAT4 DAT5 DAT6 DAT7

VSSM1 VSSM2

2

C331

P8 P7

VCHG_LDO_4V9

2

2.2u

C320 10u

VBATT

C335

2

1

C318

AVDD18_DIG

VSSQM

VREFDQ

P1 P2 N1 N2 G3

DDRAM_CS_[0]_N DDRAM_CS_[1]_N DDRAM_CLK_EN

Seperate DC-DC GND to Main GND +1V8_VIO_MTK

VCC1 VCC2

K3 VREFCA M9

+0V6_VREF

VBATT

T8 R8 R7 R9 R6 P7 P8 P9 K9 K8 K7 J6 J9 J7 J8 H8 W7 U6 W8 T5 U7 W9 V8 T6 H6 F8 E9 G7 H5 E8 G6 E7

VCCQ

C302 10n

R303 0.1u

0.1u

1

2

C310

C312

1

1u

C309

C311

4.7u

2 1

2

1

+1V2_VLPDDR2_MTK

+1V8_VIO_MTK

2

A8 B2

+3V3_eMMC_MTK

C307

1u

4.7u

2 C306

VDDI

2

1

DDRAM_CLK_N DDRAM_CLK_P

F6 F9 G10 H10 J5 K10 M5 P10 R5 T10 U10 V6 V9

1

B8

+1V8_VIO_MTK

VSSQ1 VSSQ2 VSSQ3 VSSQ4 VSSQ5 VSSQ6 VSSQ7 VSSQ8 VSSQ9 VSSQ10 VSSQ11 VSSQ12 VSSQ13

1

A5

L3

CLK_C M3 CLK_T

+0V6_VREF

47K

2

1

DDRAM_DQS_[0]_N DDRAM_DQS_[1]_N DDRAM_DQS_[2]_N DDRAM_DQS_[3]_N DDRAM_DQS_[0]_P DDRAM_DQS_[1]_P DDRAM_DQS_[2]_P DDRAM_DQS_[3]_P

47K

2

1

VDDQ1 VDDQ2 VDDQ3 VDDQ4 VDDQ5 VDDQ6 VDDQ7 VDDQ8 VDDQ9 VDDQ10 VDDQ11 VDDQ12 VDDQ13

P5 K5 U9 G9 P6 K6 U8 G8

47K

2

1

F7 F10 G5 H9 J10 L6 M6 N6 R10 T9 U5 V7 V10

DQS0_C DQS1_C DQS2_C DQS3_C DQS0_T DQS1_T DQS2_T DQS3_T

CLKM CMD

R309

1

RST

R308

B5 C5

2

2

27

R307

R305

2

+1V2_VLPDDR2_MTK

10K

100n

2

1

2

eMMC_CLK R306

100n

C1

eMMC_RST eMMC_CMD +1V8_VIO_MTK

C315

2.035714

2.2u

250K

100n

100K

C314

1.2

C313

1.425

2.2u

100K

100n

100K

C316

0.911224

1.1

C317

0.605906

47K

DNU1 DNU2 DNU3 DNU4 DNU5 DNU6 DNU7 DNU8 DNU9 DNU10 DNU11 DNU12 DNU13 NC1 NC2 NC3 NC4 NC5 NC6 NC7 NC8 NC9 NC10 NC11 NC12 NC13 NC14 NC15 NC16 NC17 NC18

27K

100K

A1 A2 A9 A10 B1 B10 E10 W10 W1 Y1 Y2 Y9 Y10 C2 C4 C6 D1 D2 D3 D4 D5 D6 E2 E3 F3 M2 N3 P3 V3 W2 W3

100K

1

R2

C 1.0

C305

PCB_REVISION

2.2u

R302

R1

100n

2

2

100K

47K

1

C304

R301

+2V85_VRF_MTK

[8GB eMMC_8Gb LPDDR2] FOR V5 +1V8_VIO_MTK

C303

ADC

47K 2

REV 1.0

R323 1

PCB Revision

- 154 -

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

6. CIRCUIT DIAGRAM

DISPLAY / CAMERA qHD MIPI LCD Conn.

RGB

DSV L401

5 22

4

21

5

20

D2

LCD_PWM LCD_RESET_N 1

1

VA408

VA409

17

9

16

10

15

11

14

12

13

VIN

B1 A1

ENP

SW

D1

OUTP

E3

REG1

D3 E2

VBATT

B2 C2 B3 E1 D2

R416

1

C4 VDD

2

4.7u

U402

SCL

REG2

C406

1u

4.7u

D1 E1 E2 D3 E3 E4

I2C_COMMON_SCL I2C_COMMON_SDA RGB_EN

C405

ENN

SDA OUTN

A2

PGND2

CFLY1

AGND

CFLY2

C3 A3

9 2 1

8

C1

C404

0

R401

LCD_MIPI_CLK_N LCD_MIPI_CLK_P

4 3

18

0.47u

DDVDL_-5V5

PGND1 C409

2.2u

C408

LCD_MIPI_DATA1_N LCD_MIPI_DATA1_P

2

RGBCLK

4.7u

R417

GND

1

SCL SDA EN CLK_32K INT TRIG

100

1M

VOUT

A2

R G B

C1 B1 A1

GPO

D2

U401

C2 ADDR_SEL0 B2 ADDR_SEL1

R418

A4A3

C407

LED_R LED_G LED_B

1u

C3D4

.

+3V0_LCD_VCI_MTK

Power for Analog(3.0V)

TP401

2

C411

2

7

B4B3

DNI

1u

C410

1u

VA410

FL402

19

C402

0.47u

DDVDH_+5V5

I2C_COMMON_SCL I2C_COMMON_SDA

7 8

+1V8_LCD_VIO_MTK

DSV_EN

5 6

6

4.7u

4.7u

LCD_MIPI_DATA0_P

FL401

10

LCD_MAKER_ID

1 2

CFLY2P CFLY2N

23

3

D1

D4

CFLY1P CFLY1N

2

LED_C2

D3

6

LEDA LED_C1

3 4

C403

G2

DDVDL_-5V5

24

LCD_MIPI_DATA0_N

GND1 GND2

CN401

1

C401

VBATT

G1

DDVDH_+5V5

4 LDO for CAM

8M MIPI CAMERA

LCD B/L Booster + Camera Flash VBATT

U403

VBATT

VDD CE_NC

+1V2_CAM_DVDD

+2V8_CAM_VCM

1 2

VOUT GND

PGND

CAM_AVDD_LDO_EN

+2V8_CAM_AVDD

1u

1u

C415

+2V8_CAM_AVDD

LEDA C414 1u

1u

10u

18

8

17

9

16 15

11

14

I2C_COMMON_SCL

12

13

FL404 P8 P7 P6 P5

8 7 6 5

CAM_DATA1_N_8M CAM_DATA1_P_8M CAM_DATA0_N_8M CAM_DATA0_P_8M

LCD_PWM

9 10

R406 2.2K

TP402

+1V8_CAM_VIO

WP

D4 PWM

U406

+2V8_CAM_VCM VBATT

CAM_IOVDD_LDO_EN

VDD CE

CAM_RESET_N

BLED1 BLED2

D1 E1

FLED1 FLED2

A1 B1

C416

Width : 0.3mm Width : 0.3mm

10u

LED_C1 LED_C2

1

LD401

A4B4E3 2

+1V8_CAM_VIO

1 2

VOUT GND

E2 A2 B2

C2 TX

FLASH_LTD 1 P1 2 P2 3 P3 4 P4

E4

OVP OUTF1 OUTF2

D2 SCL U404 D3 SDA C3 STROBE

I2C_COMMON_SCL I2C_COMMON_SDA FLASH_EN

1u

1u

C1 EN

LCD_BL_EN C417

5

C418

C4 VIN

+1V2_CAM_DVDD

C420

C421

1u

1u

VA402

10 I2C_COMMON_SDA

GND

VA401

7

FL403

1 2

VOUT

SWB

19

CAM_DVDD_LDO_EN

VDD CE_NC

SWF1 SWF2

6

4 3

VBATT

GND1 GND2 GND3

20

A3B3

U405

1 CAM_CLK_N_8M CAM_CLK_P_8M

100K

21

5

3 4

100K

4

P3

R405

22

P4

P2 P6

3

P1

R404

DNI

23

PGND

C419

24

2

G1 G2

0

1

PGND

P5

CN402

R403

D401

10u L403

+1V8_CAM_VIO

CAM_MCLK

Width : 0.3mm

L402

C412

C413

C426

C427

C422

C423

C424

C425

DNI

DNI

2.2u

2.2u

2.2u

2.2u

U407

VBATT

VDD CE_NC

R407

0

1 2

VOUT GND

PGND

CAM_AF_LDO_EN

+2V8_CAM_VCM C428

C429

1u

1u

1

1.3M CAM

TOUCH

CAM MIPI SWITCH

+2V8_CAM_AVDD

+1V8_VIO_MTK

+3V0_TOUCH_MTK

C430

+1V8_VIO_MTK

15 16 17

7

5

10K

8

4

R411

9

3

R412

Touch_Reset

22K

6

TOUCH_ID

CN406 C434 1u

VA406

14

TOUCH_INT

R410

0 13

I2C_SENSOR_SDA

1

12

10

2

VA407

22

1

1

DA1P

2

CLKAP

23

I2C_SENSOR_SCL

2

DA2P DA1N CLKAN

20

VA405

CLKN

DA2N

CAM_DATA0_N_1.3M CAM_DATA0_P_1.3M CAM_CLK_N_1.3M CAM_CLK_P_1.3M CAM_DATA1_N_8M CAM_DATA1_P_8M CAM_DATA0_N_8M CAM_DATA0_P_8M CAM_CLK_N_8M CAM_CLK_P_8M

21

VA403

D1P CLKP

CLKBP U408

18 19

1

D2P D1N

4.7K

R408 9 GND

10

24

DB1P

VA404

1

CLKBN

2

2

DB2P DB1N

D2N

DNI

3

DB2N

/OE

R415

5 4

NC2

NC1 6

SEL

DNI

100n

8

R414

ZD401 ZD402 ZD403

11

CAM_DATA1_N CAM_DATA1_P CAM_DATA0_N CAM_DATA0_P CAM_CLK_N CAM_CLK_P 100K

C431

100n

VT_CAM_RESET_N

CAM_MIPI_SW_SEL CAM_MIPI_SW_OE_N

R413

I2C_COMMON_SDA I2C_COMMON_SCL

VCC

100K

7

R409

20 19 18 17 16 15 14 13 12 11 100n

1 2 3 4 5 6 7 8 9 10

C432

CAM_MCLK

+1V8_VIO_MTK

+1V8_CAM_VIO CN405

C433

CAM_CLK_N_1.3M CAM_CLK_P_1.3M CAM_DATA0_N_1.3M CAM_DATA0_P_1.3M

1u

+2V8_VIO_MTK +1V2_CAM_DVDD

LGE Internal Use Only

- 155 -

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

6. CIRCUIT DIAGRAM

AUDIO D-Class DUO Speaker AMP L501

2

L502

1

C509 C510

0

B2 B3 D4 C3

DNI

SPK_AMP_R_EN

OUT+

U501

GAIN AGC ENB END

OUT-

2

C503 10u

B1

FB501

C1

FB503

60

SPK_RP

60

B4

HPH_L

C508

47n

C507

47n

0

C511

C512

DNI

SPK_RN C513

C514

33p

33p

A3

SW

10u

D3 IND2 IN+ B2 B3 D4 C3

SPK_AMP_L_EN

GAIN AGC ENB END

A4C2C4D1

A2

U502

C504

A1

10u

PVDD

SW

D3 IND2 IN+

C502

A1

VBAT

47n 47n

VBAT

C506 C505

A2

GND1 GND2 GND3 GND4

HPH_R

A3

PVDD

B4

PVOUT

10u

2.2u

VBATT

PVOUT

2.2u

C501

OUT+

B1

FB502

60

OUT-

C1

FB504

60

GND1 GND2 GND3 GND4

1

VBATT

SPK_LP SPK_LN C515

C516

33p

33p

A4C2C4D1

VBATT

Cutoff Freq. 320Hz, 15.5dB Gain C517 2.2u

1u

C520

1u

INL-

HPVDD GND OUTL

+1V8_VIO_MTK

B3 B1

INL+

D4 C4

INR-

D2 D1

GAIN

OUTR

U503

A3 D3

EAR_L EAR_R

INR+

HI-Z

HPVSS

C521

A4 B4

EN

1u 1u

SGND

HPH_R

C519 C518

VDD

A2

HPH_L

C3

A1

Headset_AMP_EN

CPP CPN

B2 C1

C522 1u

C523 2.2u

C2 C524

2

0

DNI

R503

1u

HP_AMP_SGND

Receiver

3.5pi Ear Jack Connector

Sub Mic CN501

1 2

RevB 1800 -> 600

Contact Type

changed to BSE MIC501

MIC2_N MIC2_P

4

C525

C526

33p

33p

2

2

2

2

2

C528

ZD503

C527

1

470K

33p

O

1

R507

EARMIC_BIAS

33p

1

G2

VA501 R517

1

P G1

1u

2

2

10K

1800

3

C535

ZD504

R506

2 FB507

1

+1V8_VIO_MTK

1

HOOK_DETECT

1

VMIC

1

600 600

0

FB505 FB506

ZD502

RCV_N

ZD501

RCV_P

2

2

1

100K

R505

R502

1

2

1.5K

R508

HS_JACK_DET

HS_JACK_DET

R516

1

HIGH(DEFAULT)

2

47K

LOW

MATING

R509

EARMIC_N

FB508

1800

S/W_Detect

R511

10

FB509

1800

SPK_L

R512

10

FB510

1800

SPK_R

2.2K C529 DNI

EAR_L EAR_R FM_ANT

L503

FB511

2

MIC

1

1

2 1

2

1

47p

1

1

ZD505

47p

D501

1

R513 DNI

1

ZD508

L504 100n

1800

C534

C533

2

2

2

2

1

ZD507

33p

ZD506

C531

33p

J501

GND

100n

EARMIC_P C530

STATE UNMATING

Close to 3.5pi ear-jack R515

MAIN GND

0 0

FM_RX_IN_N HP_AMP_SGND

R518

0

R514

LGE Internal Use Only

- 156 -

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

6. CIRCUIT DIAGRAM

SENSOR IRRC LED

PROXIMITY SENSOR

1

+1V8_VIO_MTK

2

1

9

2.2u

3 4

COMPASS_DRDY

SDO INT1

U604

11

SCK VDDIO

INT2

GND3

DRDY

5

1

2

3AXIS_INT

C607

VDD

LINE_OUT_IRRC

I2C_COMMON_SCL

10 9 8

2 1 2 3

Q601

1

1

B

C

GND

VCC

A

Y

6 5 4

1

1 C612

2

0.1u

R612 300

2 1

3

Q602

2

2

ZD601

1

1

2

2

2

C610

C609 1

3

2

0

R624

1 U605

1 2

2

2

4.7u 1

100K

R610 R608

C611

100K

2

1

I2C_SENSOR_SCL

2

5

12

0

1

1K

NC

R628

TP607

R614

LEDA

1

6

2

1K

LEDK

7

13

GND

14

SCL

LDR

PS

INT

SDI

4

LD601

+2V8_IrRC_LDO

I2C_COMMON_SDA

8

CSB

3

VDD

GND2

2

PROX_INT

SDA

GND1

1

INT3

2

0

7

R627

6

1

+1V8_VIO_MTK +3V0_SENSORS_MTK

U603

R613

10K

R603

1

I2C_SENSOR_SDA

2

1

3.3

R601

IRRC_TX

+3V0_SENSORS_MTK

+1V8_VIO_MTK

4.7u 2

6 AXIS SENSOR

C628

+2V8_IrRC_LDO

100n

1

100n

+2V8_IrRC_LDO

RP101K282D

1

VOUT 2 GND

5

VDD CE

PGND

4 3

VBATT IrRC_LDO_EN

U608

2 1

1u

Battery Conn.

2

C630

1

1u

MOTOR R615 20 R616

+3V0_VIBR_MTK

1.2V

VTREF

L601

VB601

18n

VBATT

NON Q-COIN

1

1

20 D602

VBATT

VCHG_LDO_4V9

2 C613 1u

C5 SDA C4 SCL

THM B5

100K

R617

C614

1

1u 1n

C616

R618 1K

G1 5

For MTK Fuel Gauge

1 2

2 ZD602 VA601

C618

C619

C620

47p

6.8p

1u

C621 47u

6

3

R620

4

20m

G2

BATT_ID_PULLUP 4.7K

BAT A5

1

FGN_IC

R622

4.7u C625

BATT_TEMP_ADC

CS A4

B3 IRQB

2mm

1u

CN601

2.2u

1u C624

PG1 A1 PG2 A2

C626

1u 1

C623

1u

2

LX1 B1 LX2 B2 U606

VA602

L602

47m

A3 VICHG B4 I2CIN

C622

I2C_SENSOR_SDA I2C_SENSOR_SCL

BYP C1

R621

R619

C615 4.7K

C3 GND

CHARGER_IRQ_B

BST C2

D4 SFO D3 PVL D5 AVL

C617

2.2u

D1 DC1 D2 DC2

2

0.1u

+1V8_VIO_MTK

VCHG_OVP_IN

SWITCHING CHARGING IC

C629

10V R623 100

BATT_ID

HALL IC +1V8_VIO_MTK U607

1 2

OUT GND

VDD PGND

HALLIC_INT

5

LGE Internal Use Only

- 157 -

NC

4 3 C627 100n

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

6. CIRCUIT DIAGRAM

USIM Socket

+3V0_VSIM_NFC

22p

1

22p

2

2

DNI

0

DNI

R704

CLOSE

+2V8_VRTC_MTK

VCC1

C3

2

C6

0

1 R714

C2 C5

J701

C1 2 C705

1u

1

1u

2

2

C707

C706 1

2

22p

1

22p

2

C708 1

22p

1 2 3 4 G1 G2

SD_DATA[2] SD_DATA[3] SD_CMD

C711 1

DNI

BAT700

+1V8_VIO_MTK

SD_CLK SD_DATA[0] SD_DATA[1]

1

DAT2 CLK CD/DAT3 VSS CMD DAT0 VDD DAT1 GND1 POL GND2 DET

5 6 7 8 G3 G4

R715 5.6K

1

2

2

2

2

GND2

USIM1_DATA USIM1_CLK NFC_SWP USIM1_RESET_N

C7

C718

10K

GND1

R705

GND6

GND5

RST1

VCC2

C704 1

I/O1 CLK1 VPP1

S701

VPP2

2

C703

C702 1

OPEN

LOW ( DETECT )

1

1u

1

22p

I/O2 RST2

14

C701

HIGH (DEFAULT)

1 C5_1

1

+3V0_VSIM_VCC

BACKUP BATTERY

SWITCH

15

16 C1_1

CLK2

GND3

C6_1

GND4

C2_1

13

C7_1

2

+3V3_MICRO_SD

2

2 DNI

R703

C3_1

2

MMC_DETECT

+3V0_VSIM_VCC

1

USIM2_CLK USIM2_DATA USIM2_RESET_N

2

Lee hunjae requested default nfc sim for easy bom change

R702 1

R701 1

+3V0_VSIM2_MTK

Micro SD

+3V0_VSIM_MTK

SD_DETECT

1

1

VA705

1

VA704

1

VA703

C709

VA702

2

1

VA701

2.65T 1

2 2

C710

VA706

DNI 2

2

2

2

2

1 2.2u

1 2.2u

VOLUME, QUICK KEY

POWER & Lock KEY

1

SW701 1 R706

1K

PWR_ON_SW_N

2

3 4

FEED

5

KROW0 KROW1

1

ZD701

R707

100

R708

100

R709

100

R710

KCOL6_F KCOL1_F KROW0_F

100

KROW1_F

5

KROW0_F

QUICK_MEMO 2

SW702 1 1

KCOL6 KCOL1

4

2

2

1 MBV62562001 ANT702

3

VOL_UP

KCOL1_F

KCOL6_F

4

KROW0_F

3 4

5

2

1

5

4

3 4

2

5

1

1

ZD705

ZD704

1

1

5 ZD703

SW703 1

VOL_DOWN

3

2

2

2

2

KROW1_F

ZD702

3

2

1

FEED

1 MBV62562001 ANT701

2

MAIN_TO_F-LOWER 1

+2V5_AVDD1_MTK

R711

2

200K

6

USB_ID

G2

FL701

D4

D1

D3

2

4 3

1 D701

LED_B LED_G LED_R

D711

D710

C715

D709

D708

D707

D706

VCHG_OVP_IN

LGE Internal Use Only

22p

1

1

30

2

29

3

28

4

27

5

26

6

25

7

24

8

23

9

22

10

21

11

20

12

19

13

18

14

17

15

16

2

2D703

C716

0

1 2 0 R718

1 R716

2

0

1 R717

Dual Sim Model Single SIM Model Single SIM + NFC Model

R716 0ohm R717 DNI R718 DNI R716 DNI R717 0ohm R718 DNI R716 DNI R717 DNI R718 0ohm

100n 1

CN701

SPK_LP SPK_LN SPK_RP SPK_RN

2mm

2

C717

5 G1

1

D2

D702

2

USBH_DP USBH_DM

VMIC

FB701 FB702

0

1800 C719

1u

MIC_N MIC_P KCOL1_F KROW1_F

D706 R712

0

D705

C713

C714

C712

33p

33p

470p

for Home Key

1

1u

- 158 -

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

R801 1M

FM_AVDD13

BT_AVDD13

WIFI_AVDD13

GPS_AVDD13

FM_AVDD28

CLDO

BT_AVDD33

2

1u

1u

1u

1u

1u

C807

C808

C809

C810

4.7u C805

C806

2.2u C804

1u

2.2u C802

FIL_OUT

1

U802

L808

2

DNI

.

2

GPS_LNA_EN

TP803

UART1_URXD3

TP809

TP804 TP806 TP807 TP808

C825 6.8p

Near To LNA

+1V8_VIO_MTK BT_AVDD33 BT_AVDD13 Close to Pin A9 C826

C827

C828

10p

100n

100n

OSC1_GPS GPS_SYNC

SPDT for BT&Wi-Fi

Close to Pin A5

RF_INP_GPS 100p

WIFI_RX_BT_TRX

1

1

2

C833

L810 DNI

DNI

10K

1 VCTL1

ANTSEL_0

4

.

ANTSEL_1

6

L801

1u

C814

C812 100n

1u

TP801

WIFI_INT_B BGF_INT_B

TP802

TP805 FB801

SYSRST_B_6620 CLDO

120

+1V8_VIO_MTK +2V8_VIO_MTK

C822 100n

C823

1u

1u

C824

TP810 1

RTCCLK_GPS +2V8_VIO_MTK Close to MT6577 C829

1u

C830

FM_AUOUT_R FM_AUOUT_L

1u C831

100p

FM_RX_IN_N I2S_DATA_IN

Keep ther FM_RX_IN_N and FM_ANT in differential trace to connect to audio jack L809

27n

FM_ANT 2 C832

I2S_CLK I2S_WS FB802

120

FB803

120

C836

C837

0.1u

0.1u

1

10p

FM_AVDD28 FM_AVDD13 C839 1u

D1 C1 A3 A5 A4 G5 L8 G4 J8 M7 H5 N8 M8 K8 H4 C3 B3 B1 G3 E2 D4 E5 C5 E3 F5 K7 E7 E6 E4 C4 G1 A1 C2 E1 J9 L9 J2 H2 J3 M9 D9 C6 C7 D6 D7 G2

2

M5 H1 D10 E9 K11 K12 J5 F8 J4 E10 K10 D12 M3 H6 J6 J7 H3 L7 L5 G13 F13 H13 J13 L11 L10 N9 N10 N13 M13 L13 J12 J11 H8 D8 H12 H11 M10 N11 M11 N12 L12

C844 8.2p

+2V8_TCXO_LDO Close to Pin A3 100p

WIFI_TX 1n

3 2

X801

7L26002009

OUTPUT GND

VCC GND_NC

3. Make star connection for AVDD13 (Both E6,E7 and E4,C4,G1) 2

4

C851

1

100n 1

2 C855

26MHz 1

TP813

DNI 1

C852

TP812

DNI 1

OSC1_GPS

TP811

2 C854

1u

1. Fillcut TCXO area including Lay 8th,7th,6th 2. GND clearance over 1.5mm surrounding TCXO 3. GND clearance over 2mm direction to MT6620 side 4. Spacing between TCXO and MT6620 over 2mms as possible.

SD1_DAT1 SD1_DAT2 SD1_DAT3 SD1_CMD SD1_CLK SD1_DAT0

2 C853

WIFI_TX WIFI_RX_BT_TRX

1

2

C850

ANTSEL_1 ANTSEL_0

1

100n

1u

C873

DNI

C835

100n

10p

2

2

C872 1

DNI

GND

C834

Close to MT6620

1

5

2

2

L812

DNI

VCTL2

IN

1n

1

2

2

1

C841 1

IN

10K

OUT

3

R805

FL803

100p

C838 8.2p

1

C843

C871

1

GND

1.5n

OUT2

3

FL802

OUT1

FEED

C840 2

R804

2

ANT804 MBV62562001 1

2

+2V8_TCXO_LDO GPS_AVDD13

U801

10p

1

RF_INP_GPS

2

4

PCM1CLK PCM1OUT PCM1IN PCM1SYNC UART1_UTXD3

C847

S_D

4.7n

C848

2

C821

5

C849

2

VDD

EXT_INT_N WIFI_INT_B BGF_INT_B ALL_INT_B OSC_EN SYSRST_B VDDK_1 VDDK_2 DVDDIO18 DVDDIO28 PAD_32K_OUT FSOURCE XTEST GPIO1_10 GPIO1_11 GPIO1_9 GPIO1_13 GPIO1_12 GPIO1_14 RTCCLK_O RTCCLK VRTC AVSSRTC FM_AUIN_R FM_AUIN_L FM_AUOUT_R FM_AUOUT_L FM_TX_OUT FM_RX_IN_N FM_RX_IN_P I2S_DATA_IN I2S_DATA_OUT I2C_SDA I2C_SCL I2S_CLK I2S_WS NC2 FM_VDD28 FM_VDD13 FM_VSS2 FM_VSS1

+2V8_VIO_MTK

1K

GND

BT_PRIORITY BT_ACT BTTRX_IN BTTRX_IP PCM1CLK PCMOUT PCM1IN PCM1_SYNC SD2_DAT1 SD2_DAT2 SD2_DAT3 SD2_CMD SD2_CLK SD2_DAT0 DVDDIO_SD2 AVDD33_BTTX AVDD13_BTRX AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTSX_1 AVSS13_BTSX_2 GND3 NC1 OSC1_GPS SYNC ECLOCK DUTY_LOSS RF_INN_GPS RF_INP_GPS GPIO1_25 GPIO1_24 GPIO1_26 GPIO1_27 GPIO1_28 AVDD28_OSC AVDD13_SXIF_GPS AVDD13_LNA_GPS AVSS28_OSC AVSS13_RX_GPS AVSS13_SXIF_GPS

100n

1

3

F12 E11 A6 A7 D11 F11 G12 H9 G11 F6 J10 F10 G10 F7 K9 B6 B7 A9 B9 B5 B8 A8 E8 B11 D13 E13 H10 E12 B13 A13 F4 F9 G9 G8 G7 C13 C12 A12 C11 A11 B12

C846

R803

C813

M1 N2 K3 K4 L3 L6 M6 L2 K1 K2 M2 L4 N3 H7 G6 N1 M4 L1 N4 N5 N6 K5 K6 0.1u

Close to MT6620

1

DNI

2

C816

WF_PA_VCC

DNI

2

18p

WIFI_AVDD13

6.8n

C819

2

1

100p

L807

12

10p

ZD801

L805

L803

C815

C845

L806

1

2

AVDD55_MISC GND_MISC V2P5NA PMU_EN V2P5 AVDD28_PLL AVSS28_PLL AVDD55_SMPS GND_SMPS WF_PA_LDO BT_PA_LDO TLDO FM_PA_LDO AUX_REF RF_I_CAL VREF OUTBK LXBK CLDO WF_RF_LDO BT_RF_LDO GPS_RF_LDO FM_RF_LDO

2

33p

C818

1575.42 MHz

2

3n

5.6n

1

1

L804

1

100p

1

C817

L802 1

External LNA should be located near Antenna

FL801 3 G3 4 1 OUT IN G2 G1 5 2

RF_IN

FEED

LNA for the GPS GND

RX_5G_IN TX5G_OUT TX2G_OUT RX2G_IP RX2G_IN EEDI EESK EECS CLK_DC SD1_DAT1 SD1_DAT2 SD1_DAT3 SD1_CMD SD1_CLK SD1_DAT0 AVSS33_BA AVSS33_PA_1 AVSS33_PA_2 AVSS13_WIFISX_1 AVSS33_WIFISX_2 AVSS13_BB AVSS13_PLL_1 AVSS13_PLL_2 AVSS13_TRX2G5G GND1 GND2 AVDD13_PLL_1 AVDD13_PLL_2 AVDD13_BB AVDD13_TRX5G AVDD13_WIFISX_1 AVDD33_PA AVDD33_BA AVDD33_WIFISX_2 DVDDIO_SDIO1 ANTSEL_4 ANTSEL_3 ANTSEL_2 ANTSEL_1 ANTSEL_0 WLAN_ACT AVSS13_BTSXAFE_1 AVSS13_BTSXAFE_2 AVSS13_BTSXAFE_3 AVSS13_BTSXAFE_4 NC3

ANT801 MBV62562001 1

2.2u

C811

4.7u

+2V8_TCXO_LDO

C803

1

R802

2. L2(AVDD55_SMPS) & K2(GND_SMPS) Line shoud be more than 0.2 width

4.7u

0

2

1. GND_SMPS, which is DC-DC power ground should be directly connected to battery ground, instead of sharing ground with main GND

C801

1

+2V8_TCXO_LDO

PMU_EN

WiFi/BT/GPS

VBATT WF_PA_VCC

6. CIRCUIT DIAGRAM

NFC VBATT for NFC line width = 0.15mm

Closed to MICROREAD 2 2 R806 1

C857

100n

100p

1

150K

330p

1

1

25

OSC1/32K

RFU2

VA801

1u

1

22 21 20

1

19 18

2

17

C868 100p 1

R812 0

220n 2

VBATT

1

2

2

C866

560p 1

2 C869 2.2u 1

ANT805 MBV62561601 1 FEED

2 C865

2

1

C864 68p

2

L813

23

TX/SISO/MISO

MOSI/SDA

REF_IOH

2

C863 1

200p

C867 1

R811

12p

DNI ANT806 MBV62561601 1 FEED

EMI Filter Closed to MICROREAD

0

R816

I2C_SENSOR_SCL

2

I2C_SENSOR_SDA

R814

R815

47K

47K

+1V8_VIO_MTK C870

1

NFC_FET_0 NFC_IRQ

2

2

R817

0

1

1

16

9

10

RX/SCLK/SCL

15

OSC_OUT

100p 1

1

GNDD2

24

2

AC2

26

AC1

RFU3

31

27

GNDA

32

30

28

REC

VBAT

GNDD1

IRQ_OUT

8

1

C859 2.2u

2

2

ANT1

SIGIN/SIGIO/IO

RFU1

2

7

1 2

ANT2

14

6

0

2

10p

2

GNDE

U803

SIGOUT/SIGCLK/CLK

RESET/WAKE_UP

5 0

POUT_AUX RST

EVENT

4

R810

VDDE

13

3

C860

C862

SWP

11

2

12

NFC_SWP

VDDA

33 PGND 1

POWER_IN

470n

POWER_OUT

1

29

C861

/SS

2

R809

.

2

1

43K

2

R808

+3V0_VSIM_NFC

1

C858

TP814

1

R813

2

1

+3V0_VSIM_MTK

NFCCLK

R807

1

1

1u

2

C856

100n

LGE Internal Use Only

- 159 -

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

6. CIRCUIT DIAGRAM

[FPCB Module-LOWER] uUSB 5 pin connector FPCB_LOWER_ CONNECTOR 10

2mm

GND

CN10000 8

CN1001

USB_DP USB_DN SPK_LP SPK_LN SPK_RP SPK_RN LED_B LED_G LED_R VCHG_OVP_IN

1

30

2

29

3

28

4

27

5

26

6

25

7

24

8

23

9

22

10

21

11

20

12

19

13

18

14

17

15

16

USB_ID VMIC

7

USB_ID

MIC_N MIC_P

IN

OUT

GND1 GND2

3 4

VCHG_OVP_IN

4 5

11

KCOL1_F KROW1_F

2

9

2

D10001

1

C10000 22p

1

SPEAKER1 MIC10000 1

VMIC

2 3

MIC_P MIC_N

EAB62830401

G2

SPK_LP SPK_LN

L1001

33n

1 L1002

33n

1 2 1

1

2

O

FEED

FEED

ANT10001 ANT10003

SPK_RN SPK_RP

L1003

33n

1 L1004

33n

1

1 2 1 2

FEED

ANT10000

FEED

ANT10002

1

VA1002

P G1

SPEAKER2

1

4

1

2

2 3

USB_DP

Main MIC

VA1000

6

FL10000 1

1

USB_DN

VA1001

For Single SIM

MAIN_FRONT_END

RGB_LED

ANT10004 1 1

C10004 1

0.5p

HOMEKEY

2

LED_B

1

LED_R

1

LED_G

1

SW10001

KROW1_F

R10000 100 R10001 100 R10002 100

4

LD10000

2 3 2

2

1

2 D10002

D10003

D10004 2

DNI

3

2

2 C10002

G2 G1

1

2

1

ANT

1

1

2

6.8p

2

2

C10003

FEED

1

2

ANT10005 1

1

C10005

100p

FEED

1

2

2

2

0

3

4

SW10000

KCOL1_F

R10003

1 1 1

100 R10004 100 R10005 100

4 3 2

- 160 -

2

1

2

2

2

2 1

D10007

1

D10006

1

D10005

LGE Internal Use Only

LD10001

2

CL-425F-UCC-SD-TS EAV62094101

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

7. BGA PIN MAP

7. BGA PIN MAP U101 MT6162 (Transceiver)

U101 MT6162 (Transceiver)

Not Used

LGE Internal Use Only

- 161 -

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

7. BGA PIN MAP

U201 MT6577 (Digital Baseband Processor,3G) U201 MT6577 (Digital Baseband Processor,3G)

Not Used

LGE Internal Use Only

- 162 -

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

7. BGA PIN MAP

U301 H9TP65A8JDACPR U301 H9TP65A8JDACPR

NC Not Used

LGE Internal Use Only

- 163 -

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

7. BGA PIN MAP

29 PMIC U804 MT6329 PMIC

Not Used

LGE Internal Use Only

- 164 -

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

8. PCB LAYOUT

8. PCB LAYOUT LD601

R508

R517

C316 C211

C237

C239

C214

C246

C221

T R

R323

1

5

C617

R619 C622

C623

C625

C626

L401

R706

R308

A

C415 C403

ZD701

R307

D

SC209 C409 C404 U402

R314

L402

D401

R621

R313

L403

L602

C168

R305

R217

C251

R306

E

C614

R216

R105

R104

R103

R102

C121

C176

C130

C177

C125

C254

R312

U404

R405

C624

1 R311

4

SC206

C253

U104

R310

R404

1

U606

B A

10

C252 R309

C309

C

C310

D

A

C408

F E

C250

C127

G

R315

C210

H

C215

C247

R110 R108

J

C216

C141

C140

C175

L134

C174

R109

K

C416 VA401

C616 C615

C218

C249

C137

C120

R101

L132

L113

C113

FL101

L117

L133

L110

C117

SC202

U201

C245

L103

M L

C319

U301

R205

C243

L105

C139

C135

L101

C138

C131

L128

L118

R204

N

C318

L126

FL102

Model name : ALM2412 (U802) Function : GPS - no GPS SC207 C406

P

AK

R304

C162

C173

C126

ANT701

Model name : H9TP32A4GDBCPRKGM(U301) Function : Memory - no Booting

ANT702

30

C220 C256

C208

C259

C207

R211

C219

C209

C244

R207

C240

R206

C242

R212

C255

R201

C241

C258

C178

C179

R208

C248

R209

C257

C167

C158

C169

L135

C156

C128

V U

C315

R401

C226

Y W

R303

C225

C314

C306

C236

C301

C222

C234

C307

C317

C217

L125

C155

R111

C181

L136

C180

C145

C144

FL106

R803

C223

C233

C232

C230

C205

C203

C212

C166

C146

C172

C825

C231

C260

C154

C132

U103

C133

L130

VB601

C302

C261

L122

X201

L119

C149

C182

R106

R407

C304

C224

C311

TP301

C206

C204

C202

C213

L102 L106

C428

C305

C201

C227

C238

L115

U407

SC212

R202

L114

L131

U405 C417

C312 C303 C313

C235

C171

U406 C420

R409

C228

V

PT101

C816

C430

C124

C143

C119

C118

C142

C114

C112

C148

C183

L124

C151

C161

C152

C163

C429

U403 C412

R413

C229

U101

C101

C815

U408

18

C102

L803

C108

L120

L127

C157

C159

C165

C153

C160

R615 R616 C421

SC210

C109

A

C104

FL105

C115

C413

L601

C833

C103

R203

L112

C613

C838

L810

C850

C854

C106

C123

C107

L129

C418

C129

SC203

D602

VA602

SC205

C811

R802

R804

FL802

C835

L121

C134 C164

C105

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

TP813

R415

FL103

C150

L802

TP811

L804

TP807

TP804

TP802

R603

C819

TP805

TP803

TP809

C818

TP808

TP806

FL801

R214

C821

C805

C844

R805

C834 L123

U802

L808

C518

R213 C814

X101

VA501 C607

C523

C519

C520

C521

C533

ZD508

R511

FB509

L801

C824

SC221

1

C535 FB507

C525 ZD501

SC211

C517

R215

C829

C527

FB506

C629

R502

D501

FB508

PID1

C524

R503

U503

FB505 C528

ZD502 ZD504 ZD503 C526

C630

R514

C534

ZD507

R505

C812

C830

R107

SW701

SC204

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

SW703

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

U608

R518

L504

R513 R512

FB510

C839

SW702

C853

C122

R210

C522

R516

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

R610

R507

A

U102

TP607

R414

13

FL104

MIC501

U605

R613

C611

R515

C612

Q601

C529

R509

R506

C531

ZD506

C849

U801

R801

Model name : SKY77758 (U103) Function : 3G PAM (Band1/Band5) - no Service Model name : SKY77589 (U102) Function : GSM PAM - no Service

R614

ZD505

C530

L503

SC201 N

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

R612

Q602

ZD601

R624

U603

C628

FB511

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

R601

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

C627

U607 C717 C716 D703 R711

C712 R712 C714 D705

D706 D707 D708 D709

FB701

C719

FB702 D704 C713

LG-D686_MAIN_EAX65429401_1.0_TOP LGE Internal Use Only

- 165 -

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

8. PCB LAYOUT

L806

ZD801

C433

BAT700

L807 R715

C431

VA402

12

13

Model name : CN406 Function : Touch - no Touch

C427 C426

C840

C810

L812

C827

FL803

C823

C872

C841

C822

C873

R708

C845

C807

C847

C851

C846

C808

ZD703

C809

FB801

C843

C871

L809

C832

C813

C848

C826

R410

C434

R412

R408

C802

VA704

C709

C710

VA701

VA705

R705

VA702 VA703 VA706

SC215

VA403 VA404 VA405

C801

C831

C836

C837

C806

5

VA407 R411 VA406

C803

X801 C852

24

R403

FB802

FB803

C855

C419

C804 6

10

CN406

J701

C425

R406

C424

TP402

CN402

C422 C423

LD401

Model name : LD401 Function : Flash LED - no Flash

C828

Model name : S701 Function : SIM - no SIM detect

TP810

TP801

C333

L302 R320

C332

C330

1 14

C863

C856

C861

R808

C857

R807

R806

C858

R809

C860

R704

C862

C859

C866

C867

SC218 C708

C865

R810

L304

L813

TP814

C621 ZD602

R317 R319 C338

R318

C325

U803

C868

S701

C864

C619

C620

C618

C335

D301

C869

C337

C320 C321

P

R812

SC216

L

N

C339

C334

K

M

L303

C322 C323 C324

U804

F

H

C336

L305

L301

E

G

J

R321 R322

TP401

D

C340

C411

FL401

C410

FL402

C414

C

C342

13

B

SC217

VA410 VA408 VA409

CN401 12

R813

R815

C331

R814

C328

C870

C326

C263 C262

R817

C327

TP812

R816

C329

24 A

C705

R701

R702

R709

L104

C704

L108

C703

C702

C701

R703

SW102

ZD704

C711

R714

C111

L109

C706

R618

R617

CN601

C707

R622

R620

VA601

R623

L107

C110

Model name : SW102 Function : RF TEST - no Connect with equipment for call

SW101

CN201

Model name : MT6329(U804) Function : PMIC - no booting, - no touch, - no camera - no LCD, - no RF

ANT804

FL404

Model name : CN402 Function : camera - no 5M Camera

10

Model name : J701 Function : SD socket - no sd card detect

Model name : CN401 Function : LCD - no LCD

FL403

C432

L805 C817

C609

R301

ZD401

R302

R608

C718

CN405

C610

ZD402

U604

11

J501

R628 R627

ZD403 20

CN501

ANT801

Model name : BMC150 (U604) Function : 6 axis - no 6 axis sensor

R710

ZD705

R707

ZD702

C503

L502

C508

C512

U502

C511

C507 C516

C515

FB502

C504 R717

FB504

Model name : CN601 Function : Battery connector - no boot, - no charging

R718

R716

R811

VA801

ANT805

ANT806

C509

C510

C501

C502

C506

L501

U501

C505

FB503

D711

FB501 C513

C514

C401

C402

C407

C405 R416

D710

U401

R418

FL701

30

CN701 15

16

R417

D702

D701

C715

Model name : CN701 Function : SUB FPCB connector - no, speaker, - no Download, - no voice, - no Motor

LG-D686_MAIN_EAX65429401_1.0_BOT LGE Internal Use Only

- 166 -

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

9. CALIBRATION

9. CALIBRATION This document is draft version, so the contents will be updated after registering the final 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 5.0V

RF Test Equipment

E5515C(8960)

NOTICE

LGE Internal Use Only

- 167 -

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

9. CALIBRATION

D686 MS695

[Tachyon36]LGMS695_20120213_Calibration

LGE Internal Use Only

- 168 -

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

9. CALIBRATION

LGD686

LGE Internal Use Only

- 169 -

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

9. CALIBRATION

LGD686

LGE Internal Use Only

- 170 -

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

9. CALIBRATION

LGE Internal Use Only

- 171 -

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

9. CALIBRATION

D686

LGD686 LGD686

LGD686 LGD686 LGD686 LGD686

LGD686

LGD686

LGE Internal Use Only

- 172 -

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

9. CALIBRATION

LGE Internal Use Only

- 173 -

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

9. CALIBRATION

5 0V 5.0V

RF cable : (P/No :

)

2

1

“RIF-200 and phone” are connected in 5P E-SATA DC_Plug

5P E-SATA DC_Plug No:

LGE Internal Use Only

- 174 -

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

9. CALIBRATION

LGE Internal Use Only

- 175 -

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

9. CALIBRATION

LGE Internal Use Only

- 176 -

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

9. CALIBRATION

LGE Internal Use Only

- 177 -

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

9. CALIBRATION

Tachyon 36 Tachyon_36

LGE Internal Use Only

- 178 -

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

9. CALIBRATION

5.0V

LGE Internal Use Only

- 179 -

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

9. CALIBRATION

LGE Internal Use Only

- 180 -

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

9. CALIBRATION

LGE Internal Use Only

- 181 -

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

9. CALIBRATION

MS695 D686

LGE Internal Use Only

- 182 -

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

9. CALIBRATION

LGD686

LGD686

LGE Internal Use Only

LGD686 LGD686 LGD686 LGD686 LGD686

- 183 -

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

9. CALIBRATION

D686 MS695

MS695 D686

LGE Internal Use Only

- 184 -

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

9. CALIBRATION

MS695 D686

RF900

LGE Internal Use Only

- 185 -

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

10. HIDDEN MENU

10. HIDDEN MENU Hidden Menu Start Start shortcut keys:3845#*686# Hidden Menu List Start the desired menu: Menu, click

All Auto Test – Normal Mode 1. All Auto Test – Partial 2. All Auto Test Result– Partial 3. All Auto Test – Full : Device functionality testing at the factory to use 4. All Auto Test Result– Full :Above test’s results are saved 5. AATFULL (+power key) 6. Normal Boot (+power key) 7. FTM Boot (+power key) 8. Power Off (+power key) 9. Version Name 10. Individual Item List: 1. Auto Detecting Item Test 2. Key Press Test 3. Camera(Main) test 4. Camcorder Test 5. Display check Test 6. Ring Test 7. Vibrator Test 8. Touch Draw Test 9. Motion Sensor Test 10. GPS BT WIFI Test 11. FM Radio Test 12. LoopBack Test

LGE Internal Use Only

- 186 -

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

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 Recognition Up/Down key : Check Recognition Menu key : Check Recognition Home key : Check Recognition Back key : Check Recognition SIM_SWITCH key : Check Recognition End key : Check recognition Phone contact with your fingers in the top of the sensor determine the sensor response - Far - Near

LGE Internal Use Only

- 187 -

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

10. HIDDEN MENU

Camera Test 1 Main Camera Preview

Camera Test 2 Camcorder Preview

Display check Test : LCD Black & White test • Check the Black display • Check the White display

LGE Internal Use Only

- 188 -

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

10. HIDDEN MENU

Ring Test : Check sound • Check the sound

Vibrator test A case-by-state vibration tests

Touch window test Write with finger

LGE Internal Use Only

- 189 -

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

10. HIDDEN MENU

GPS BT WI-FI Test • Check the GPS scanning • Check the GLONASS : N/A • Check the WIFI scanning • Check the BT scanning

FM Radio Test • Check the FM Radio

Audio Loopback Test • Check the Receiver loopback • Check the speaker loopback

LGE Internal Use Only

- 190 -

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

10. HIDDEN MENU

ELT Test Automatic Mode -> Test Automatically Manual Mode : Test selectivity

ELT Test Automatic Mode : LCD Automatic on/off test -> time setting

ELT Manual Test - LCD Backlight - Ringtone - Vibrator - Camera - Audio Loopback -> test on the device is working (The ability to use plant)

LGE Internal Use Only

- 191 -

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

10. HIDDEN MENU

SW Sanity Test: FPRI Test : Compare and Create logt.txt CRC Test : EFS CRC EFS CRC Detail DB Check : DB Check and Compare DB 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

LGE Internal Use Only

- 192 -

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

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

LGE Internal Use Only

- 193 -

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

10. HIDDEN MENU

Audio test list - Ring - Effect Sound - Message Tone

Vibrator test list - On/Off - Duration

Camera test list - Snapshot - Camcoding - CameraVT - Camera Aging

LGE Internal Use Only

- 194 -

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

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 Modification 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

LGE Internal Use Only

- 195 -

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

10. HIDDEN MENU

Device Test - RTC Test

Battery Test • Battery Status • Battery Health • Battery Mode of Charging • Battery Level • Battery Technology • Battery Voltage • Battery Temperature

Device Test - ETC(ADC Info)

LGE Internal Use Only

- 196 -

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

10. HIDDEN MENU

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

Version Info (Classified Information representation) - SW Version Info - Firmware Version - Baseband Version - Kernel Version - HW Version - Factory Version - Touch Firmware Version - Build finger print

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

LGE Internal Use Only

- 197 -

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

10. HIDDEN MENU

AutoRun Switch 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

LGE Internal Use Only

- 198 -

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

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

LGE Internal Use Only

- 199 -

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

10. HIDDEN MENU

Bluetooth Settings

ERS Settings - Client Status - ERS Test

ETC ADC Info

LGE Internal Use Only

- 200 -

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

10. HIDDEN MENU

LCD Always On Switch 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

LGE Internal Use Only

- 201 -

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

10. HIDDEN MENU

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

Modem Settings Enter to EngineerMode EngeinnerMode 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

LGE Internal Use Only

- 202 -

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

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

LGE Internal Use Only

- 203 -

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

10. HIDDEN MENU

Log and Debugging - BatteryLog - Debug Utils - System Logger - TagLog

Others - Settings Font - SWLA - Thermal

Module Test list: - BT DUT - SMS Prefer Set - FOTA Test - LCD Always On - FS_TEST - Hidden Reset - Heap Free Info - Stability Test - Charging Test

LGE Internal Use Only

- 204 -

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

10. HIDDEN MENU

Call Test - Auto Call Test - VC Auto answer - Call Duration

WCDMA Only - Streaming Streaming Setting Edit -> Edit Enable or not Streaming Log -> Log Enable or not

Wap Debug - Change UAString - View UAString - Edit UAString - Enable/Disable X-wap-profile - Display Certificates - Change UAPROFILE

LGE Internal Use Only

- 205 -

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

10. HIDDEN MENU

DRM Test

WCDMA Only - Contacts Test Insert specific number of contact info

Log service Enable of disable creating below log files. - Maing log - System log - Radio log - Events log - Kernel log

LGE Internal Use Only

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

10. HIDDEN MENU

WCDMA Only – Flex Test

SMPL Counter

North America APN Settings

LGE Internal Use Only

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

10. HIDDEN MENU

WLAN Test WLAN performance on SW

Fake Language Switch to Fake language mode On/Off

GPS Test gpsApp Test Test

gpsApp Test Air Test(Enable / Disable)

LGE Internal Use Only

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

10. HIDDEN MENU

MLT MLT HIDDEN Menu

LG RCT Test

LGE Internal Use Only

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

11. DISASSEMBLE GUIDE

11. DISASSEMBLE GUIDE 1. Disassemble Battery Cover , Rear

1. Remove Battery Cover Assy 2. Remove Battery and Stylus Pen 3. Remove 9 Point Screws From Rear 4. Remove Cover Rear Assy

LGE Internal Use Only

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

11. DISASSEMBLE GUIDE

2. Disassemble Main PCB

Remove FPCB CONNECTOR 5EA and COAXIAL CABLE CONNETOR from PCB

Remover 4 Point Screws From Main Ant

LGE Internal Use Only

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

11. DISASSEMBLE GUIDE

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 LGE Internal Use Only

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

11. DISASSEMBLE GUIDE

4. Disassembled Components

LGE Internal Use Only

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

12. EXPLODED VIEW & REPLACEMENT PART LIST

12. EXPLODED VIEW & REPLACEMENT PART LIST This document is draft version, so the contents will be updated after registering the final one.

LGE Internal Use Only

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