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LED LCD TV
SERVICE MANUAL
CHASSIS : LD01U
MODEL : 42LV3500/3550/3551
MODEL :
MODEL :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62863058 (1103-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42LV355A/355C/355N/355U
42LV3500-ZA
42LV3550/355A/355C/355N/355U-ZB
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
42LV3551-ZD
Printed in Korea
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Table of Contents
Related Manuals for LG 42LV3550
Summarization of Contents
Safety Precautions
Important Safety Notice
Highlights critical safety aspects and warnings for servicing.
Servicing Precautions
General Servicing Precautions
Outlines general procedures and precautions for servicing electronic equipment.
Electrostatically Sensitive Devices (ES Devices)
Provides techniques to prevent damage to ES components.
Soldering Guidelines
Details recommended practices for soldering electronic components.
Product Specifications
Application Range and Test Requirements
Defines the scope of the specification and testing conditions.
Model General Specifications
Lists general specifications including market, broadcasting systems, and inputs.
Video Input Specifications
Details component and RGB video input resolutions and frequencies.
HDMI Input Specifications
Details HDMI input resolutions, modes, and HDCP support.
Adjustment Instructions
Main PCB Check Process
Outlines the procedure for checking and verifying the main PCB.
Software Download and Update
Details the process of downloading and updating TV software via USB.
EDID Data Management
Covers manual and automatic download of EDID data for various interfaces.
V-COM and Serial Number Download
Details V-COM adjustment and serial number download procedures.
System Architecture
Block Diagram
High-level overview of the TV's internal components and their interconnections.
Exploded View
Visual representation of the TV's internal parts and their assembly.
Standard Repair Processes
Video Error Troubleshooting
Step-by-step guide for diagnosing and resolving video-related issues.
Power Error Troubleshooting
Step-by-step guide for diagnosing and resolving power-related issues.
Audio Error Troubleshooting
Step-by-step guide for diagnosing and resolving audio-related issues.
Function Error Troubleshooting
Step-by-step guide for diagnosing and resolving general function errors.
Noise and Exterior Defect Troubleshooting
Guides for diagnosing noise issues and exterior physical defects.
Detailed Repair Process Steps
Specific technical steps for error diagnosis, like checking LCD backlights.
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