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LCD TV
SERVICE MANUAL
CHASSIS : LP81A
MODEL : 32LG50FR
MODEL :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/Latin America
Europe/Africa
Asia/Oceania
32LG53FR
32LG55FR
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
32LG53FR-TA
32LG53FR-TD
32LG53FR-TE
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Summarization of Contents
Safety Precautions
General Guidance
General guidelines for safe servicing practices.
Leakage Current Checks
Procedures for performing AC leakage current checks.
Servicing Procedures and Precautions
General Servicing Practices
Overview of general precautions during servicing.
Static-Sensitive Component Handling
Precautions for handling ES devices to prevent damage.
Soldering Techniques
Guidelines for effective and safe soldering.
Component Handling and Repair
Component Removal and Replacement
Detailed steps for removing and replacing various components.
Circuit Board Foil Repair
Methods for repairing damaged copper patterns on circuit boards.
Product Specifications
Application Range
Defines the application range for the specification.
Testing Requirements and Methods
Outlines the conditions and methods for testing.
General LCD Module Specifications
Details the specifications of the LCD module.
Model Specifications
Broadcasting System and Channels
Specifies broadcasting systems and channel availability.
Input Interface Specifications
Lists various input connections and their specifications.
RGB and HDMI Input Specifications
Details resolutions and frequencies for RGB and HDMI inputs.
Adjustment Instructions
Adjustment Scope and Conditions
Defines the scope and conditions for adjustment procedures.
Software Program Download
Step-by-step guide for downloading software.
Download and Configuration Adjustments
USB Download Procedure
Instructions for downloading firmware via USB.
ADC and Color Balance Adjustment
Procedures for adjusting ADC and color balance.
Option and Power Cycle Adjustment
Steps for changing tool/area options and power cycle.
EDID, DDC, and HDCP Management
EDID Download Procedure
Steps for downloading EDID data via RGB and HDMI.
HDCP Setting
Instructions for setting up High-Bandwidth Digital Contents Protection.
White Balance Adjustment
White Balance Purpose and Principle
Explains the purpose and principle of white balance adjustment.
Manual White Balance Adjustment
Step-by-step guide for manual white balance adjustment.
DDC Command Protocol
Signal Table
Defines the signal table for DDC commands.
EEPROM Data Write and Read
Instructions for writing and reading EEPROM data via DDC.
Troubleshooting - Power Issues
No Power Symptom
Details symptoms and troubleshooting steps for no power.
Troubleshooting - Display Issues
No Raster Symptom
Troubleshooting steps for when no raster is displayed.
RF Mode Display Problems
Diagnosing unusual displays from RF input.
Troubleshooting - Signal Display Issues
Input Signal Display Problems
Troubleshooting unusual displays from AV, S-Video, Component, RGB.
Component and RGB Display Problems
Troubleshooting unusual displays from Component and RGB inputs.
Troubleshooting - Audio Issues
No Sound Symptom
Troubleshooting steps for when there is no sound output.
System Diagrams
Block Diagram Overview
Overview of the main functional blocks of the TV.
Exploded View and Safety
Illustrated component breakdown and related safety notice.
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