LG Electronics 55LA625C-ZA service manual Copyright, LG Electronics. Inc. All rights reserved

Page 2
Copyright ©

CONTENTS

CONTENTS

2

SAFETY PRECAUTIONS

3

SERVICING PRECAUTIONS

4

SPECIFICATION

6

ADJUSTMENT INSTRUCTION

10

TROUBLE SHOOTING GUIDE

16

BLOCK DIAGRAM

21

EXPLODED VIEW

22

SCHEMATIC CIRCUIT DIAGRAM

Copyright ©

LG Electronics. Inc. All rights reserved.

- 2 -

LGE Internal Use Only

Only for training and service purposes

 

 

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Contents LED TV SERVICE MANUALREAD THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL 55LA625C 55LA625C-ZALG Electronics. Inc. All rights reserved Only for training and service purposesCopyright LGE Internal Use OnlyBefore returning the receiver to the customer SAFETY PRECAUTIONSGeneral Guidance Leakage Current Cold CheckAntenna Cold CheckSERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesSmall-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Removal1. Application range SPECIFICATION4. Model General Specification 3. Test methodGuard IntervalBitrateMbit/s Symbolrate 4.0Msymbols/s to 7.2Msymbols/sDVB-T 1/4, 1/8, 1/16, 1/325.2. RGB Input PC - HD Model 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 5.3. RGB Input PC - FHD Model5.3. HDMI InputPC/DTV PCDVI2. Designation ADJUSTMENT INSTRUCTION1. Application Range 3. Main PCB check process3.2. EDID Download After downloading, have to adjust Tool Option again3.1. ADC Process 3.3. EDID data3.4 Function Check 4. Total Assembly line process4.1. White Balance adjustment 6.1. Signal Table 5. GND and HI-POT Test6. Model name & Serial number D/L 4.5. Outgoing condition Configuration7.1. Communication Prot connection 7. CI+ key download6.3. Method & notice 7.2. CI+ Key Download8.2. IR OUT 8. Check Commercial Features8.1. External speaker8OHM, 1W, Single-End 2. Digital TV Video TROUBLE SHOOTING GUIDE1. Check the booting Voltage 3. Analog TV Video 4. AV Video5. RGB Video 6. HDMI Video7. Audio of All iput 8. TV Audio9. AV Audio 10. RGB AudioTuner DVB- T/C BLOCK DIAGRAMS7LR2 LGE211A-T8 EXPLODED VIEW Copyright 2013 LG Electronics. Inc. All rights reserved 2013 S7LR22012 . 11 VDDC SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Normal+1.5VDDR FROM LIPS & POWER B/DPowerDET +3.3VNormal780 mAIC501 NTP-7500LTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION CONTROL IR & LED30Pin LVDS Connector LVDS51Pin LVDS Connector For FHD 60Hz FOR FHD REVERSE10bit Change in S7LRHDMI2 HDMI EEPROMHDMI1 For CECRS232C RS - 232CSIDE USB HEADPHONERGB PC PC AUDIODDR13331GHYNIX S7LRDIVXMS10DDR256 EAN61828901SFLASH S c a r t REAR COMPONENT PHONE JACKF u l l SCART AUDIO MUTEEXTSPK EXTSPEAKERAMPSPEAKER OUT JACK IC1800Option name of this page CI SLOT because of Hong Kong CI POWER ENABLE CONTROLCI Region PCMCITU2603 GP4RGLOBALTUNERBLOCKTU2602 TDSS-G101D
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