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LG 22LS4D User Manual

LG 22LS4D
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 Specifications

General IconGeneral
Integrated clockYes
Tilt angle range-3 - 10 °
HD typeWSXGA+
Comb filter3D
Display diagonal22 \
Display brightness300 cd/m²
Display resolution1680 x 1050 pixels
Native aspect ratio16:10
Contrast ratio (typical)3000:1
RMS rated power6 W
Number of speakers2
RS-232 ports1
Product colorBlack
Power consumption (standby)1 W
Power consumption (typical)60 W
Weight and Dimensions IconWeight and Dimensions
Depth (without stand)68.6 mm
Width (without stand)525.4 mm
Height (without stand)440.6 mm
Weight (without stand)5700 g

Summary

Safety Precautions

AC Leakage Current Cold Check

Procedure for checking AC leakage current with the AC plug removed from the source.

AC Leakage Current Hot Check

Procedure for measuring AC leakage current with the AC plug connected to the outlet.

Servicing Precautions

Electrostatic Discharge (ESD) Precautions

Measures to prevent damage to sensitive electronic components from static electricity.

Adjustment Instructions

White Balance Adjustment

Detailed procedures for performing white balance adjustments for different color temperatures.

Auto White Balance Procedure

Steps for executing the automatic white balance adjustment using RS-232C.

Manual White Balance Procedure

Instructions for manually adjusting white balance for Cool, Medium, and Warm settings.

Troubleshooting Guide

Power Board Troubleshooting

Flowchart and checks for diagnosing issues related to the power board's voltage output.

Power Board Voltage Output Flowchart

A step-by-step flowchart to diagnose voltage output problems originating from the power board.

No Power Troubleshooting

Diagnostic steps and checks for identifying the cause of the 'no power' symptom.

Protect Mode Troubleshooting

Procedure check and board isolation steps for issues related to the protect mode.

No Raster Troubleshooting

Diagnostic flowchart for screen display issues where no raster is present.

Screen Display Issues in Specific Modes

Troubleshooting for unusual screen displays occurring in specific input modes.

No Sound Troubleshooting

Diagnostic procedure for situations where the screen displays but there is no audio output.

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