LG Electronics 42LT640H-ZA Block Diagram, S7LR, Copyright, All rights reserved, Half

Page 16

. All rights reserved.

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

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LGE Internal Use Only

X-tal

24M

Buffer

PI_TS_DATA[0:7]

74LVC16244

LVDS (8bit or 10 bit)

PKT_DATA[0

FE_TS_DATA[0]

Pro:Idiom

Serial Flash

CI

FE_TS_DATA[0:7]

30P

MX25L8006EM2I

CI_TS_DATA[0:7]

Slot

CI_ADDR[0:7]

Buffer

PCM_A[0:7]

For Boot

51P

IF_N/P_MSTAR

B_TMDQ[0:16]

DDR3 (2GB)

IC1201

Half

TU_CVBS

A_TMDQ[0:16]

Tuner

NIM

TU_SIF

DDR3 (1GB)

(CAN)

-

IC1202

F -SCART

TV/DTV_VOUT

PCM_A[0:7]

NAND Flash

SC1_CVBS/R/G/B/FB_IN

NAND01GW3B2CN6E

COMPONENT

DSUB_ R/G/B

S7LR

I2C

EEPROM

RGB

CAT24WC08W-

COMP_Y/ /Pr Pb

DSUB_H/VSYNC

HP_L/ROUT

Head

SC1_L/R_IN, E_AM_AUDIO,AV_L/R_IN,

AUDIO IN

Phone

I2S

Digital ampp

L/R

COMP_L/R_IN, PC_L/R_IN

(NTP7400)

LED Clock

LED Driver

NEC Micom

EEPROM

-

uPD78F1164A

M24M01

USB_DM/DP

USB Power

AOZ1073AIL-3

I2C

USB Power

(IC1102)

I2C

I2C

DC/DC Conv.

I2C SW

HPD1/2, HDMI_CEC, 5V_HDMI 1/2/3

(12V to 5V)

Power SW

TMDS[0:7] ( Data, Clock-(+/))

HDMI 1/2/3

RS- 232C

5V

MP2305

(12V On/Off)

MST_TX/RX

SPDIF_OUT

MP5000

SPDIF

12V

Speaker Out

Up/Down

Audio amp

L/R_BTL

MAX3232CDR

NEC_TX/RX

Control

Speaker Out

(TPA6011A4PWPRG4)

BLOCK DIAGRAM

Image 16

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/DVI5.1. Component Input Y, CB/PB, CR/PR 5. Video resolutions 2D5.2. 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. CI+ Key Download method 6.1. Download ProcedureCI+ 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 W25Q80BVSSIGSI2176ATSC1INPUTH P4RGLOBALTUNERBLOCKSI2156DVB1INPUTH LGDT1001 IC1501PILG1001 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