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LG 42LK430 User Manual

LG 42LK430
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LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LD01M
MODEL: 42LK430/430A/430N/430U
MODEL:
42LK430/430A/430N/430U-ZG
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 : MFL62863097 (1108-REV00)
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LG 42LK430 Specifications

General IconGeneral
Audio systemInfinite Sound
RMS rated power20 W
Number of speakers2
Teletext functionYes
Video formats supportedDIVX
Number of OSD languages31
Audio (L/R) in0
HDMI ports quantity3
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 optical out1
Display diagonal42 \
Display technologyLCD
Native aspect ratio16:9
Supported video modes1080p
Contrast ratio (dynamic)100000:1
Display diagonal (metric)107 cm
3DNo
Backlight typeCCFL
Annual energy consumption206 kWh
Product colorBlack
Power consumption (standby)0.28 W
Power consumption (typical)141 W
Tuner typeAnalog & digital
Analog signal format systemPAL, SECAM
Digital signal format systemDVB-C, DVB-T
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)261 mm
Width (with stand)1023 mm
Height (with stand)685 mm
Weight (with stand)15000 g
Depth (without stand)76.6 mm
Height (without stand)635 mm
Weight (without stand)13500 g

Summary

Safety Precautions

Important Safety Notice

Crucial safety advice for servicing the chassis, identifying critical parts.

General Guidance for Servicing

Essential guidelines for safe servicing procedures, including isolation transformers.

AC Leakage Current Checks

Procedures for checking AC leakage current (cold and hot) to ensure user safety.

Servicing Precautions

General Servicing Precautions

Rules for unplugging, testing, and handling the receiver during service operations.

Handling Electrostatic Sensitive Devices

Techniques to prevent damage to ES devices during handling and installation.

Soldering Guidelines

Best practices for soldering, including tool use, tip temperature, and cleaning.

Component Handling and Repair

Component Removal and Replacement

Procedures for removing and replacing ICs, transistors, diodes, and fuses.

Circuit Board Foil Repair

Guidelines for repairing damaged copper patterns on circuit boards.

Product Specifications

Application Range

Defines the scope of the specification for the LD01M chassis LCD TV.

Test Requirements

Outlines conditions and procedures for testing TV components and functions.

Test Methods

Describes performance and safety testing methodologies followed.

Model General Specifications

Details market, broadcasting systems, and input/output specifications.

Input Signal Specifications

Component Video Input

Lists supported resolutions and frequencies for component video inputs.

RGB Input (PC)

Details resolutions, frequencies, and pixel clocks for PC RGB input.

HDMI Input Details

DTV Mode HDMI Input

Specifies resolutions and frequencies for DTV signals via HDMI.

PC Mode HDMI Input

Lists resolutions, frequencies, and pixel clocks for PC signals via HDMI.

Adjustment Procedures

Application Range (Adjustment)

Specifies that these adjustment instructions apply to LD01M chassis TVs.

Designation and Equipment

Lists required equipment and designation for the adjustment process.

Main PCB Check and Boot File Download

Details PCB checks and the process for downloading boot files.

Calibration and Data Management

ADC Process

Steps for performing Analog-to-Digital Converter (ADC) calibration.

EDID Data Management

Procedures for handling EDID data, including FHD RGB and HDMI formats.

Operational Checks and Preparation

Function Check Procedures

Steps to verify TV functions like display and sound.

Assembly Line Adjustment Preparation

Details on preparing for adjustments on the assembly line, including equipment.

Assembly Line Checks

EYE-Q Function and Outgoing Configuration

Procedures for checking EYE-Q function and final outgoing configuration.

GND and HI-POT Testing

Steps for performing Ground and High Potential (HI-POT) safety tests.

Model and Serial Number Download

Procedures for downloading model name and serial number via RS232.

Download and CI+ Key Procedures

Manual Model/Serial Number Download

Steps for manually downloading model name and serial number.

CI+ Key Download and Verification

Procedures for downloading and verifying CI+ Key values via RS232.

Troubleshooting Guide

Power-up Boot Check

Flowchart for diagnosing power-up issues and identifying faulty components.

Video Signal Troubleshooting

Digital TV Video Issues

Troubleshooting steps for digital TV video signal problems.

Analog TV Video Issues

Troubleshooting steps for analog TV video signal problems.

Input Signal Troubleshooting

AV Video Issues

Troubleshooting steps for AV video input problems.

Component Video Issues

Troubleshooting steps for component video input problems.

Video Input Troubleshooting

SCART Video Issues

Troubleshooting steps for SCART video input problems.

RGB Video Issues

Troubleshooting steps for RGB video input problems.

HDMI Video Troubleshooting

HDMI Video Input Issues

Troubleshooting steps for HDMI video input problems.

Audio Troubleshooting

All Source Audio Issues

Troubleshooting for audio problems across all input sources.

TV Audio Troubleshooting

Digital TV Audio Issues

Troubleshooting steps for digital TV audio problems.

Analog TV Audio Issues

Troubleshooting steps for analog TV audio problems.

Specific Audio Input Troubleshooting

AV Audio Issues

Troubleshooting steps for AV audio input problems.

Component/SCART Audio Issues

Troubleshooting steps for component and SCART audio inputs.

RGB Audio Issues

Troubleshooting steps for RGB audio input problems.

Block Diagram

Exploded View

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