Manuals / LG Electronics / TV and Video / Flat Panel Television

LG Electronics 340T Contents, Safety Precautions, Servicing Precautions, Specification, Copyright

Models: 3450 340S 340T

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CONTENTS	2
SAFETY PRECAUTIONS	3
SERVICING PRECAUTIONS	4
SPECIFICATION	6
ADJUSTMENT INSTRUCTION	11
BLOCK DIAGRAM	16
EXPLODED VIEW	19
SCHEMATIC CIRCUIT DIAGRAM

Copyright ©	LG Electronics. Inc. All rights reserved.	- 2 -	LGE Internal Use Only
Only for training and service purposes

Page 2

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Contents

READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LD21CSERVICE MANUAL http//aic.lgservice.comSERVICING PRECAUTIONS CONTENTSSAFETY PRECAUTIONS SPECIFICATIONSAFETY PRECAUTIONS IMPORTANT SAFETY NOTICESERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesSmall-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Removal1. Application range SPECIFICATION4. Model General Specification 3. Test methodsymbolrate SpecificationSymbolrate 4.0Msymbols/s to 7.2Msymbols/s DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 5.3. HDMI InputPC/DTV PCDVI1. Application Range ADJUSTMENT INSTRUCTIONBoot file Download 2. Designation3.2. EDID Download 3.1. ADC Process3.3. EDID data 7. ADC Calibration3.4 Function Check 4. Total Assembly line process4.1. Adjustment Preparation 5. HI-POT Test 4.3. Outgoing condition Configuration6.1. Signal Table 6. Model name & Serial number D/L7.1 MAC Address 7. MAC Address & CI+ key download6.3. Method & notice GP4LOW7.2 LAN Inspection 7.3. LAN PORT INSPECTIONPING TESTLG2111 A RearSide IC101Side Applied Model **LM580T, **560T, **LS350T, **CS460TRear LG2111 ASide 560S, **LS350S, **CS460SRear LG2111 AEXPLODED VIEW +3.3VNormal FROM LIPS & POWER B/DPowerDET +1.5VDDR30Pin LVDS Connector LVDS for large inch51Pin LVDS Connector For FHD 60Hz Only for training and service purposesGP4LS7LR22011/06/03 DDR25612 Only for training and service purposesS7LR2DIVXMS10 Copyright 2012 LG Electronics. Inc. All rights reservedGP4LS7LR2 Serial Flash for SPI bootOnly for training and service purposes 2011/06/03Only for training and service purposes CI RegionOption name of this page CISLOT because of Hong Kong Copyright 2012 LG Electronics. Inc. All rights reservedOnly for training and service purposes H/W option ETHERNETGP4LS7LR22011/06/14 ETHERNET21 ETHERNETCopyright 2012 LG Electronics. Inc. All rights reserved IR/LED and control for on.y ’12 sub without IR-OUTOnly for training and service purposes LGE Internal Use OnlyTU2602TU2603 TDSS-G101D TDSN-G301D GP4RGLOBALTUNERBLOCKOnly for training and service purposes TU2601GP4LS7LR22011/11/02 DVBS27 DVB-S2 LNB Part AllegroOptionLNB Only for training and service purposesGP4LS7LR22011/11/16 AMPSTA380BWE AUDIO AMPSTA380BWEOnly for training and service purposes Copyright 2012 LG Electronics. Inc. All rights reservedLGE Internal Use Only Only for training and service purposesCopyright 2012 LG Electronics. Inc. All rights reserved NAND FLASH MEMORYVDDC Normal PowerOnly for training and service purposes NormalOnly for training and service purposes USB SIDEUSB1DIODES Copyright 2012 LG Electronics. Inc. All rights reservedHDMI1 HDMI2EANON SIDE HDMIOnly for training and service purposes For CECCOMPONENT Full ScartOnly for training and service purposes SCART AUDIO OUTCopyright 2012 LG Electronics. Inc. All rights reserved RS-232C 4PINOnly for training and service purposes LGE Internal Use OnlyGP4LS7LR2 MSTART DEBUG4PINOnly for training and service purposes 2011/09/05Page Contents of LCD TV Standard Repair Process Error symptom Contents of LCD TV Standard Repair Process Detail Technical ManualContinue to the next page ContentMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A. Video errorLCD TV A2 Check Power Board 24v outputOnly for training and service purposes A. Video errorvoltages of Power LCD TVMenu→ Set up→ Support → Signal Test Signal strength Normal over 50% A. Video errorBy using Digital signal level meter By using Diagnostics menu on OSD Signal Quality Normal over 50%→ Set-Top-Box, Different maker TV etc A. Video errorLCD TV LCD TV A8/ A9A. Video error Check color by input -External Input COMPONENT -RGBVertical/Horizontal bar, residual image, light spot External device screen error-Color errorA. Video error LCD TVCheck Power On ‘”High” B. Power errorCheck Power LED Measure voltage of each output of Power B/DIf Power Off mode is not displayed Check Power B/D voltage B. Power errorCheck Power Off Mode POWEROFFABNORMAL1LCD TV C. Audio error24V of Power Check user menu Speaker offLCD TV C. Audio errorIn case of External Input signal error Check and fix external device Check audio B+ VoltageLCD TV D. Function error1. Remote controlR/C operating error Check & RepairY Check technical Signal information input? - Fix information D. Function errorCheck input signal Recognition errorIdentify nose type E. NoiseLCD TV F. Exterior defect LCD TV

CONTENTS

SAFETY PRECAUTIONS

SERVICING PRECAUTIONS

SPECIFICATION

ADJUSTMENT INSTRUCTION

BLOCK DIAGRAM

EXPLODED VIEW

SCHEMATIC CIRCUIT DIAGRAM

Copyright ©

LG Electronics. Inc. All rights reserved.

LGE Internal Use Only

Only for training and service purposes