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LG 22LS4D-ZB - User Manual

LG 22LS4D-ZB
27 pages
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LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LD73B
MODEL : 22LS4D 22LS4D-ZB
website:http://biz.LGservice.com
Internal Use Only
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LG 22LS4D-ZB Specifications

General IconGeneral
BrandLG
Model22LS4D-ZB
CategoryLCD TV
LanguageEnglish

Summary

SAFETY PRECAUTIONS

General Guidance

Essential guidelines for safe operation and maintenance.

Leakage Current Checks

Procedures for checking AC leakage current to prevent electrical hazards.

SERVICING PRECAUTIONS

General Servicing Precautions

Standard precautions to follow during receiver servicing.

Electrostatically Sensitive (ES) Devices Handling

Techniques to prevent damage to ES devices from static electricity.

General Soldering Guidelines

Best practices for soldering electronic components.

SERVICING PROCEDURES

Component Removal and Replacement

Step-by-step guides for removing and replacing various components.

Circuit Board Repair Techniques

Methods for repairing damaged copper traces on circuit boards.

SPECIFICATIONS

General TV Specifications

Overall technical specifications for the television unit.

LCD Module Specifications

Detailed specifications for the LCD panel and module.

Optical Features

Specifications related to the display's optical performance.

Component Video Input Specifications

Technical details for component video signal inputs.

RGB PC Input Modes

Supported resolutions and frequencies for RGB PC input.

HDMI DTV Modes

Supported resolutions and frequencies for HDMI DTV input.

HDMI PC Input Modes

Supported resolutions and frequencies for HDMI PC input.

ADJUSTMENT INSTRUCTIONS

Application Range and Specifications

Defines the scope of application and relevant specifications for adjustments.

Channel Memory Setup

Instructions for setting up the LGIDS channel memory.

EDID Management

Procedures for EDID download and writing.

Tool Option Selection

Guide to selecting the correct tool option for adjustments.

RF;AV;S-VIDEO Adjustment

Procedures for adjusting RF, AV, and S-VIDEO color balance.

Component Adjustment

Procedures for adjusting component color balance.

RGB Adjustment

Procedures for adjusting RGB color balance.

White Balance Procedures

Steps for both auto and manual white balance adjustments.

Serial Number and Model Information

Procedure for setting serial number and model name.

TROUBLESHOOTING

Power Board Voltage Output Flowchart

Flowchart for diagnosing power board voltage output issues.

No Power Troubleshooting

Procedure to diagnose and resolve no power symptoms.

Protect Mode Troubleshooting

Steps to troubleshoot and resolve protect mode issues.

No Raster Troubleshooting

Procedure to diagnose and fix problems with no raster on screen.

Screen Display Troubleshooting

Diagnosing strange screen displays and no OSD.

SCART2 Mode Display Troubleshooting

Troubleshooting unusual display in SCART2 mode.

No Sound Troubleshooting

Procedure to diagnose and resolve issues with no sound output.

BLOCK DIAGRAM

EXPLODED VIEW

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