LG Electronics 42LT640H-ZA Copyright 2012 LG Electronics. Inc. All rights reserved, Mirror

Page 24
[51Pin LVDS Connector]

[51Pin LVDS Connector]

 

(For FHD 60/120Hz)

LVDS_SEL

P703

 

 

+3.3V_Normal

FI-RE51S-HF-J-R1500

 

 

 

FHD

 

 

R705

 

 

 

 

 

 

3.3K

1

 

 

OPT

2

 

 

R710

3

 

 

10K

 

 

OPT

 

 

 

4

 

 

 

5

 

 

 

6

 

 

SCANNING_EN

 

 

 

7

R700

 

+3.3V_Normal

 

 

8

0

 

 

 

 

PWM_DIM

 

37_LGD

 

37_LGD

9

 

R701

 

 

 

 

 

3.3K

10

 

 

OPC&SCANNING_CTRL

 

 

 

11

 

 

OPT

 

 

R702

 

 

 

12

 

RXA4+

10K

 

 

13

 

RXA4-

 

 

 

 

14

 

RXA3+

 

 

 

 

15

 

RXA3-

 

16

 

RXACK+

 

 

 

 

17

 

RXACK-

 

 

 

 

18

 

 

 

19

 

RXA2+

 

 

 

 

20

 

RXA2-

 

 

 

 

21

 

 

 

22

 

RXA1+

 

 

 

 

23

 

RXA1-

 

 

 

 

24

 

RXA0+

 

 

 

 

25

 

RXA0-

 

 

 

 

26

 

 

BIT_SEL: AUO-GND, LGD-NC

 

 

 

27

 

 

 

28

 

RXB4+

R709

 

10K

 

 

 

 

 

29

 

RXB4-

BIT_SEL_LOW

 

 

 

30

 

 

 

FOR FHD REVERSE(10bit)

Change in S7LR

MIRROR Pol - change

RXA4+

 

 

 

RXA0+

 

RXA0-

RXA4-

 

 

 

RXA0-

 

RXA0+

RXA3+

 

 

 

RXA1+

 

RXA1-

RXA3-

 

 

 

RXA1-

 

RXA1+

RXACK+

 

 

 

RXA2+

 

RXA2-

RXACK-

 

 

 

RXA2-

 

 

 

RXA2+

 

 

 

 

 

 

RXA2+

 

 

 

RXACK+

 

RXACK-

RXA2-

 

 

 

RXACK-

 

RXACK+

RXA1+

 

 

 

RXA3+

 

RXA3-

RXA1-

 

 

 

RXA3-

 

RXA3+

RXA0+

 

 

 

RXA4+

 

RXA4-

RXA0-

 

 

 

RXA4-

 

RXA4+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXB4+

 

 

 

RXB0+

 

RXB0-

RXB4-

 

 

 

RXB0-

 

RXB0+

RXB3+

 

 

 

RXB1+

 

RXB1-

RXB3-

 

 

 

RXB1-

 

RXB1+

RXBCK+

 

 

 

RXB2+

 

RXB2-

RXBCK-

 

 

 

RXB2-

 

RXB2+

RXB2+

 

 

 

RXBCK+

 

 

 

RXBCK-

 

 

RXB2-

 

 

 

RXBCK-

 

 

 

RXBCK+

 

 

 

 

RXB1+

 

 

 

RXB3+

 

RXB3-

RXB1-

 

 

 

RXB3-

 

RXB3+

RXB0+

 

 

 

RXB4+

 

RXB4-

RXB0-

 

 

 

RXB4-

 

RXB4+

 

 

 

 

 

 

 

 

 

FOR FHD REVERSE(8bit)

Change in S7LR

[30Pin LVDS Connector] (For HD 60Hz_Normal)

P705

 

 

 

FF10001-30

 

 

 

HD

 

 

 

1

 

 

 

2

OPT

 

 

 

 

 

 

R713

 

 

3

0

 

 

4

 

 

 

5

 

 

 

6

RXA3+

 

 

 

 

 

7

RXA3-

 

 

 

 

 

8

 

 

 

9

RXACK+

 

 

 

 

 

10

RXACK-

 

 

 

 

 

11

 

 

 

12

RXA2+

 

 

 

 

 

13

RXA2-

 

 

 

 

 

14

 

 

 

15

RXA1+

 

 

16

RXA1-

 

 

 

 

 

17

 

 

 

18

RXA0+

LVDS_SEL

 

 

 

19

+3.3V_Normal

 

RXA0-

 

 

 

 

 

20

 

 

 

21

 

R712

 

 

3.3K

 

 

 

 

22

 

OPT

 

23

 

R711

 

24

 

10K

PANEL_VCC

 

OPT

 

 

 

 

25

 

 

L701

26

 

 

120-ohm

 

 

HD

 

 

 

27

 

 

 

28

 

OPT

HD

C701

C702

C703

31

 

 

 

 

 

 

RXB3+

 

 

 

 

 

 

 

 

 

 

 

 

RXB3-

 

 

 

 

 

 

32

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXBCK+

 

 

 

 

 

 

33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXBCK-

 

 

 

 

 

 

34

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35

 

 

 

 

 

 

RXB2+

 

 

 

 

 

 

36

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXB2-

 

 

 

 

 

 

37

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

38

 

 

 

 

 

 

RXB1+

 

 

 

 

 

 

39

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXB1-

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXB0+

 

 

 

 

 

 

41

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXB0-

 

 

 

 

 

 

42

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

43

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

44

 

 

 

 

 

 

PANEL_VCC

 

 

 

 

 

 

45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

46

 

 

 

 

 

 

 

 

 

L702

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120-ohm

 

 

 

 

 

 

47

 

 

 

 

 

 

 

 

 

FHD

 

 

 

 

 

 

48

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

 

 

 

 

 

 

 

 

 

 

 

 

C700

 

 

C709

 

C710

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

 

 

 

 

 

10uF

 

 

1000pF

 

 

0 . 1 u F

 

 

 

 

 

 

 

 

 

 

 

 

 

16V

 

 

50V

 

16V

51

 

 

 

 

 

 

 

 

 

 

 

 

OPT

 

 

OPT

 

FHD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

52

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIRROR

RXA4+

RXA4-

RXA3+

RXA3-

RXACK+

RXACK-

RXA2+

RXA2-

RXA1+

RXA1-

RXA0+

RXA0-

RXB4+

RXB4-

RXB3+

RXB3-

RXBCK+

RXBCK-

RXB2+

RXB2-

RXB1+

RXB1-

 

Pol - change

RXA4+

 

 

 

 

RXA4-

RXA4-

 

 

 

 

RXA4+

RXA0+

 

 

 

 

RXA0-

RXA0-

 

 

 

 

RXA0+

RXA1+

 

 

 

 

RXA1-

RXA1-

 

 

 

 

RXA1+

 

 

 

 

RXA2+

 

 

 

 

RXA2-

RXA2-

 

 

 

 

RXA2+

RXACK+

 

 

 

 

RXACK-

RXACK-

 

 

 

 

RXACK+

RXA3+

 

 

 

 

RXA3-

RXA3-

 

 

 

 

RXA3+

 

 

 

 

 

 

 

 

 

 

 

 

RXB4+

 

 

 

 

RXB4-

RXB4-

 

 

 

 

RXB4+

RXB0+

 

 

 

 

RXB0-

RXB0-

 

 

 

 

RXB0+

RXB1+

 

 

 

 

RXB1-

RXB1-

 

 

 

 

RXB1+

RXB2+

 

 

 

 

RXB2-

 

 

 

 

RXB2-

 

 

 

 

RXB2+

 

 

 

 

RXBCK+

 

 

 

 

RXBCK-

RXBCK-

 

 

 

 

RXBCK+

S h i f t

RXA0-

RXA0+

RXA1-

RXA1+

RXA2-

RXA2+

RXACK-

RXACK+

RXA3-

RXA3+

RXA4-

RXA4+

RXB0-

RXB0+

RXB1-

RXB1+

RXB2-

RXB2+

RXBCK-

RXBCK+

RXB3-

RXB3+

29

 

 

10uF

1000pF

0 . 1 u F

 

 

16V

50V

16V

30

 

 

OPT

 

 

 

 

 

 

 

31

 

 

 

 

 

 

 

 

 

 

RXB0+

RXB3+

RXB3-

RXB4-

RXB0-

RXB3-

RXB3+

RXB4+

THE (For FHD 60/120Hz)SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

EMEA INTERACTIVE

 

 

 

 

 

 

 

GP4_MSTAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2011 . 08 . 21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LVDS WAFER

 

 

 

 

 

 

 

 

 

 

 

 

7

2 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copyright © 2012 LG Electronics. Inc. All rights reserved.

LGE Internal Use Only

Only for training and service purposes

 

Page 23 Page 25
Image 24
Page 23 Page 25
Contents READ THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comhttp//eic.lgservice.com http//biz.lgservice.comCONTENTS SAFETY PRECAUTIONSSERVICING PRECAUTIONS SPECIFICATIONSAFETY PRECAUTIONS IMPORTANT SAFETY NOTICESERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesIC Remove/Replacement ReplacementSmall-Signal Discrete Transistor Removal/Replacement RemovalSPECIFICATION 4. Model General Specification1. Application range 3. Test methodRGB Input RGB-PCAnalogD-SUB 15PIN HDMI1-DTV/DVI5. Video resolutions 2D 5.1. Component Input Y, CB/PB, CR/PR5.2. RGB Input PC 5.3. HDMI InputPC/DTV PCDVIADJUSTMENT INSTRUCTION Boot file DownloadAfter downloading, have to adjust Tool Option again 1. Application Range4. Total Assembly line process 4.1. Adjustment Preparation3.1. ADC Process 3.2. Function Check4.4. EDID data 4.2. DDC EDID Write RGB 128Byte4.3 DDC EDID Write HDMI 256Byte Manual W/B process using adjust Remote control4.5. Outgoing condition Configuration 4.6. HI-POT Test4.6.1. HI-POT auto-check preparation 4.6.2. HI-POT auto-check5.1. Signal Table 5. Model name & Serial number D/L5.2. Comand Set 5.3. Method & notice6.1. Download Procedure 6. CI+ Key Download methodCI+ Key Value BLOCK DIAGRAM S7LRAll rights reserved HalfEXPLODED VIEW EMEA INTERACTIVE GP4MSTAR2011 . 08 Copyright 2012 LG Electronics. Inc. All rights reservedOLED Step Up regulator 3 . 3V to 5VMAX 250mA THERMALFROM LIPS & POWER B/D PowerDET+1.5VDDR +3.3VNormalIC501 NTP-7500LCONTROL IR & LED 51Pin LVDS Connector 30Pin LVDS Connector For HD 60HzNormalFor FHD 60/120Hz MIRROR Pol - changeHDMI1 For CECHDMI2 SIDEHDMI0 . 3 3 u F RGB/SPDIF/PC/HP/USB USBDIODESS7LRDIVXMS10 IC1300 MX25L8006EM2I-12GIC1300-*1 W25Q80BVSSIGP4RGLOBALTUNERBLOCK SI2176ATSC1INPUTHSI2156DVB1INPUTH IC1501 LGDT1001PILG1001 A2 Full Scart/ Comp1 UART/I2C SWITCH EXTSPK AMPEXTSPKCONTROL/DEBUG EXTSPK OUTEXTERNALPOWER OUT 5V/12V REAL TIME CLOCKRTCCI Region Option name of this page CI SLOT because of Hong KongSMD GASKET Page Contents of LCD TV Standard Repair Process 1. Trouble ShootingA. Video error Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D CableLCD TV A2 Check Power Board 24V,12V,3.5V outputvoltages of Power Check variousNo Video BoardA. Picture Problem By using Digital signal level meterBy using Diagnostics menu on OSD Menu→Setup→Manual Tuning Signal strength Normal over 30% Signal Quality Normal over 30%Check color by input -External Input COMPONENT -RGB ※ Checkand replace Link CableConnect other external device and cable External device screen error-Color errorVertical/Horizontal bar, residual image, light spot Check color condition by input -External Input -Component RGBB. Power error Stand-By Red Operating whiteCheck Power LED Check Power On ‘”High”Check Power Off Starusinstart menu If Power Off mode is not displayed Check Power B/D voltagePOWEROFFABNORMAL1 POWEROFFCPUABNORMALC. Audio error Power BoardCheck user menu Speaker off Check audio B+In case of External Input signal error Check and fix external device Check audio B+ Voltage 20V orD. General Function Problem 1. Remote controlR/C operating errorCheck & Repair Cable connection Connector solder Output signalD. Function error Check input signalY Check technical Signal information input? - Fix information S/W VersionE. Noise Identify nose typeF. Exterior defect A. Video errorVideo error, video lag/stop MENU -Æ red keycustomer support -Æ signal test -Æ select channelWhen the signal is strong, use the attenuator -10dB, -15dB, -20dB etc Standard Repair Process Detail Technical Manual1. Checking method for remote controller for adjustment Press the IN-START with the remote controller for adjustmentALL MODELS VersionA. Video errorColor error You can view 6 types of patterns using the ADJ KeyAppendix Exchange T-Con Board Appendix Exchange T-Con Board Appendix Exchange PSULED driver No LightDim Light No picture/Sound Ok A - 3/5Appendix Exchange the Module Un-repairable Cases In this case please exchange the modulePanel Mura, Light leakage Press damageAppendix Exchange the Module 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment itemB. Power error Off when on, off whiling viewing Entry methodC. Audio errorNo audio/Normal video 1. Press the MENU button on the remote controllerChecking method 2. Select the AUDIO function of the Menu
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