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LCD TV
SERVICE MANUAL
CHASSIS : LD03B
MODEL : 47LD650/680
MODEL :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL63263111 (1003-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
47LD650N
47LD651/690
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
47LD650/680-ZC
47LD650N-ZC
47LD651/690-ZB
Printed in Korea
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Summarization of Contents
Safety Precautions
Important Safety Notice
Critical safety warnings and identification of special parts for preventing hazards.
General Servicing Guidance
Provides essential advice for technicians during TV servicing operations.
AC Leakage Current Checks
Procedures for checking AC leakage current (cold and hot) to ensure user safety.
Specifications
Application Range & Test Requirements
Defines the scope of the manual and conditions for component testing.
Test Methods
Outlines the methodologies for product performance and safety evaluations.
Module Optical Specifications
Details key optical parameters of the LCD panel, including color coordinates.
Component Video Input Specifications
Lists supported resolutions and frequencies for component video signals.
RGB (PC) Input Specifications
Details PC input resolutions and corresponding frequency requirements.
HDMI Input Specifications
Specifies supported DTV and PC modes for HDMI signal inputs.
Adjustment Instructions
General Guidelines and Conditions
Covers application range, designation, and environmental conditions for adjustments.
Automatic Adjustment Overview
Explains the purpose of automatic adjustments for optimal performance.
ADC Adjustment Procedure
Details the steps for Analog-to-Digital Converter adjustment for black level and gain.
MAC Address Write
Describes the process for writing the MAC address using service software.
LAN Port Inspection and Settings
Covers LAN port inspection, PING test, and network configuration.
V-COM Adjustment
Explains V.COM adjustment's importance for liquid crystal driving and polarity change.
Model Name & Serial Number Download
Details manual download of model name and serial number via service remote.
CI+ Key Download Method
Outlines the procedure for downloading CI+ keys using RS-232C communication.
Manual Adjustment Overview
Introduces general principles and methods for manual adjustments.
ADC (Saturn5) Manual Adjustment
Provides specific steps for performing manual ADC adjustments.
EDID/DDC Download
Explains downloading Extended Display Identification Data for Plug and Play.
White Balance Adjustment Overview
Covers the objective and working principle of White Balance adjustment.
White Balance Adjustment Equipment
Lists the necessary tools and equipment for performing WB adjustments.
White Balance Adjustment Commands
Details the RS-232C commands used for White Balance auto-adjustment.
White Balance Adjustment Method
Describes the auto and manual methods for performing White Balance adjustments.
White Balance Reference Data
Provides reference coordinates and temperatures for WB adjustment.
EYE-Q Function Check
Explains the procedure to check and adjust the EYE-Q sensor function.
Tool Option Selection & Ship-out Check
Covers selecting tool options and performing final ship-out checks.
GND & Internal Pressure Check
Details the methodology for checking ground and internal pressure.
Audio Specifications
Lists audio practical maximum output and speaker performance specifications.
USB Software Download (Service Only)
Explains the process for downloading firmware via USB for service purposes.
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