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LG 43LF540V User Manual

LG 43LF540V
80 pages
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Printed in KoreaP/NO : MFL68646111 (1503-REV00)
CHASSIS : LD55T
MODEL : 32LF550U 32LF550U-ZA
32LF551C 32LF551C-ZA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED TV
SERVICE MANUAL
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only

Table of Contents

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LG 43LF540V Specifications

General IconGeneral
Screen shapeFlat
Response time- ms
Display diagonal43 \
Display brightness- cd/m²
Native aspect ratio16:9
LED backlighting type-
Screen format adjustments4:3, 16:9
3DNo
Annual energy consumption53 kWh
Audio decodersDolby Digital
RMS rated power10 W
Number of speakers2
HDMI version1.4
DVI-D ports quantity0
USB 2.0 ports quantity1
Product colorBlack
Power consumption (standby)0.3 W
Power consumption (typical)36 W
Package depth152 mm
Package width1050 mm
Package height655 mm
Package weight12700 g
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)198 mm
Height (with stand)624 mm
Weight (with stand)9800 g
Depth (without stand)39.9 mm
Width (without stand)971 mm
Height (without stand)575 mm
Weight (without stand)9500 g

Summary

Safety Precautions

Leakage Current Cold Check

Procedure for checking AC leakage current with the receiver unplugged from the AC source.

Servicing Precautions

Electrostatically Sensitive (ES) Devices

Guidelines for handling sensitive electronic components to prevent static damage.

Specification

Adjustment Instruction

Boot file Download

Step-by-step guide for downloading the boot file using Mstar ISP Utility software.

USB DOWNLOAD

Procedure for updating TV software via USB, including precautions for version compatibility.

Total Assembly Line Process

White Balance Adjustment

Procedure for adjusting white balance using CA210 color analyzer and specific temperature settings.

HI-POT Test

HI-POT Auto-check

Procedure for performing the HI-POT auto-check, including test pass/fail indications.

MAC Address & CI+ Key Download

Block Diagram

Power Schematic

AUDIO AMP Schematic

Trouble Shooting Guide

A. Video error

No video/Normal audio

Troubleshooting steps for 'No video/Normal audio' errors, checking backlight and power.

No video/No audio

Troubleshooting for 'No video/No audio' errors, focusing on power board voltages.

Tuning fail, Picture broken/Freezing

Steps for diagnosing tuning failures, picture issues, or freezing, checking RF signal and SW version.

Color error

Troubleshooting steps for color errors, checking input signals and link cables.

Vertical/Horizontal bar, light spot, external device color error

Guide for fixing bars, image persistence, or external device color issues, checking SW and connections.

B. Power error

No power

Troubleshooting for 'No power' issues, checking the front display LED and power board voltages.

Off when on, viewing auto off

Diagnosing intermittent power off issues, checking power off modes and outlet.

C. Audio error

No audio/Normal video

Troubleshooting steps for 'No audio' errors, checking sound output settings and speaker connections.

Wrecked audio/discontinuation/noise

Steps to resolve audio problems like distortion, dropouts, or noise, checking signals and voltage.

D. Function error

Remote control & Local switch checking

Troubleshooting remote control and local key issues, checking IR signals and board connections.

External device recognition error

Diagnosing issues with external device recognition, checking technical information and connections.

E. Noise

Circuit noise, mechanical noise

Guidance for identifying and resolving circuit or mechanical noise issues, including module replacement.

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