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LG 19LH2000 User Manual

LG 19LH2000
75 pages
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LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LD91A
MODEL : 19LH2000 19LH2000-ZA
MODEL : 19LH2020
19LH2020-ZC
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
Printed in KoreaP/NO : MFL50326813 (0904-REV00)
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LG 19LH2000 Specifications

General IconGeneral
Speakers4
Mean time between failures (MTBF)60000 h
Child lockYes
SCART ports quantity2
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Digital audio coaxial out1
Display diagonal19 \
Display brightness300 cd/m²
Display resolution1366 x 768 pixels
Native aspect ratio16:9
Contrast ratio (dynamic)8000:1
Viewing angle, horizontal170 °
Product colorBlack
Power consumption (standby)1 W
Power consumption (typical)40 W
RMS rated power6 W
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)171 mm
Width (with stand)462.4 mm
Height (with stand)353 mm
Weight (with stand)3800 g
Depth (without stand)65 mm
Height (without stand)308 mm
Weight (without stand)3600 g

Summary

Safety Precautions

Important Safety Notice

General safety warnings and critical precautions for servicing.

Servicing Precautions

General Servicing Precautions

Covers general safety and handling rules during maintenance.

Component Replacement Procedures

Adjustment Instructions

PCB Check and USB Download

Steps for main PCB checks and software updates via USB.

Adjustment Procedures

ADC Calibration and Function Check

Detailed steps for ADC calibration and post-adjustment functional checks.

Schematic Diagrams

Main Board Schematic (Part 1)

Electrical wiring diagram for the main board, section 1.

Main Board Schematic (Part 2)

Electrical wiring diagram for the main board, section 2.

Standard Repair Process - Video Errors

No Video/Normal Audio Troubleshooting

Step-by-step guide for diagnosing no video or normal audio issues.

No Video/No Audio Troubleshooting

Step-by-step guide for diagnosing no video and no audio issues.

Standard Repair Process - Picture Issues

Picture Broken/Freezing Troubleshooting

Guide for resolving display artifacts like broken picture or freezing.

Standard Repair Process - Power Issues

No Power Troubleshooting

Guide for diagnosing and fixing the TV not powering on.

Standard Repair Process - Audio Issues

No Audio with Normal Video Troubleshooting

Guide for fixing audio problems when video is present.

Standard Repair Process - Functionality

Troubleshooting Flowcharts

Power-Up Boot Fail Diagnosis

Flowchart for diagnosing TV startup failures and component checks.

No OSD Diagnosis

Flowchart for diagnosing issues where the On-Screen Display is absent.

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