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LCD TV
SERVICE MANUAL
CHASSIS : LD03B
MODEL : 47LD750/750N
MODEL :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62863020 (1003-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
47LD780/790
47LD751
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
47LD750/750N-ZA
47LD780/790-ZA
47LD751-ZB
Printed in Korea
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Table of Contents
Related Manuals for LG 47LD751
Summarization of Contents
SAFETY PRECAUTIONS
General Guidance
Provides general safety instructions for servicing the TV and handling components.
Leakage Current Cold Check
Checks AC leakage current with the AC plug removed from the source.
Leakage Current Hot Check
Measures AC leakage current while the set is plugged into the AC outlet.
SPECIFICATION
Application Range
Defines the scope of this specification for the LD03B chassis LCD TV.
Requirement for Test
Outlines the environmental and voltage conditions required for product testing.
Test Method
Specifies the testing procedures and standards to be followed.
Module Optical Specification
Details the optical performance characteristics of the LCD module.
Component Video Input (Y, CB/PB, CR/PR)
Lists supported resolutions and frequencies for component video signals.
RGB (PC) Input
Details supported resolutions, frequencies, and pixel clocks for PC input.
ADJUSTMENT INSTRUCTION
Application Range
States that these instructions apply to all LCD TVs with the LD03B chassis.
Designation
Provides important notes on servicing procedures, isolation transformers, and environmental conditions.
Automatic Adjustment
Covers automatic adjustment procedures including ADC and MAC address writing.
ADC Adjustment
Explains the ADC adjustment for optimizing black level, gain, and RGB deviation.
MAC Address Write
Details the procedure for writing MAC addresses using a PC and service software.
LAN
Describes the equipment and conditions for LAN connectivity and settings.
LAN Port Inspection (PING TEST)
Outlines how to test LAN port functionality using a PING test program.
V-COM Adjust (Only LGD(M+S) Module)
Explains the importance and procedure for adjusting VCOM for liquid crystal driving.
Model Name & Serial Number Download
Describes manual download procedures for model name and serial number.
CI+ Key Download Method
Details the process for downloading CI+ keys via RS-232C.
Manual Adjustment
ADC (Saturn5) Adjustment
Guides on adjusting ADC for Analog-to-Digital conversion and RGB deviation compensation.
EDID/DDC Download
Explains the process for downloading EDID and DDC data for PC/monitor information sharing.
White Balance Adjustment
Outlines the objective and procedure for adjusting white balance to reduce panel deviation.
Adj. Method
Details the methods for automatic and manual white balance adjustment.
Reference (White Balance Adj. Coordinate and Temperature)
Provides reference color coordinates and temperatures for white balance adjustment.
EYE-Q Function Check
Describes the procedure to check and adjust the EYE-Q sensor function.
Tool Option Selection
Guides on selecting appropriate tools for adjustment procedures.
Ship-out Mode Check (In-stop)
Explains how to check the unit's status after final inspection.
GND and Internal Pressure Check
Method
Details the procedure for performing GND and internal pressure auto-checks.
Checkpoint
Lists critical voltage and current checkpoints for safety tests.
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