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LG 43UF640 SERIES User Manual

LG 43UF640 SERIES
51 pages
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Printed in KoreaPrinted in Korea
P/NO : MFL69305903 (1506-REV00)P/NO : MFL69305903 (1506-REV00)
CHASSIS : LD59R / LD5ZRCHASSIS : LD59R / LD5ZR
MODEL : 43/49UF640*MODEL : 43/49UF640*
43/49UF640*-ZA43/49UF640*-ZA
CAUTIONCAUTION
BEFORE SERVICING THE CHASSIS,BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED TVLED TV
North/Latin North/Latin
America America
http://aic.lgservice.comhttp://aic.lgservice.com
Europe/Africa http://eic.lgservice.comEurope/Africa http://eic.lgservice.com
Asia/Oceania Asia/Oceania
http://biz.lgservice.comhttp://biz.lgservice.com
Internal Use OnlyInternal Use Only
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LG 43UF640 SERIES Specifications

General IconGeneral
BrandLG
Model43UF640 SERIES
CategoryLED TV
LanguageEnglish

Summary

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Critical safety information identifying special parts and preventing hazards.

General Guidance

Recommendations for using isolation transformers and handling fuses for safe servicing.

Leakage Current Cold Check

Procedure to check AC leakage current with the AC plug removed from the source.

Leakage Current Hot Check

Procedure to check AC leakage current with the AC plug directly in the outlet.

SERVICING PRECAUTIONS

General Servicing Precautions

Rules for unplugging the receiver, testing high voltage, and handling components.

Electrostatically Sensitive (ES) Devices

Techniques to prevent damage to sensitive components from static electricity.

General Soldering Guidelines

Best practices for soldering, including temperature, solder type, and cleaning.

SPECIFICATION

Application range

Defines the LED TV models and chassis this specification applies to.

Requirement for Test

Specifies the environmental and power conditions required for product testing.

Test method

Outlines the methods used for testing product performance and other specifications.

Model General Specification

Details market coverage, DTV standards, and supported satellites for the models.

Broadcasting system

Lists the supported analog and digital broadcasting standards (PAL, SECAM, DVB).

Program coverage

Specifies the analog TV frequency bands and CATV channel ranges.

Receiving system

Details the analog and digital receiving system standards like COFDM and QAM.

Input Voltage

Specifies the AC input voltage range and frequency for the television.

External Input Format

Standard Level For Input Signal

Defines the standard input signal levels for video, audio, and component signals.

2D Mode

Lists the supported resolutions, frequencies, and pixel clocks for 2D video input.

ADJUSTMENT INSTRUCTION

Automatic Adjustment

Describes the process for automatic adjustments like MAC address and key downloads.

LAN Inspection

Outlines the procedure for inspecting network connectivity and settings.

WIDEVINE key Inspection

Details how to confirm Widevine key input data in the menu.

LAN PORT INSPECTION

Steps for performing a LAN port ping test to verify network connection.

Model name & Serial number Download

Procedures for downloading the model name and serial number to the TV.

CI+ Key checking method

Method to check if the CI+ Key has been successfully downloaded.

WIFI MAC ADDRESS CHECK

How to check the Wi-Fi MAC address using RS232 commands or menu.

Manual Adjustment

EDID/DDC Download

Procedure for downloading EDID/DDC data to ensure optimal resolution display.

Equipment

Lists the necessary equipment for performing manual adjustments.

Download method

Step-by-step guide for downloading EDID data using the adjustment remote.

EDID DATA

Displays the raw EDID data for various HDMI input configurations.

Green Eye inspection guide

Guide for inspecting the 'Green Eye' sensor function and backlight behavior.

PCM

Details specifications for Pulse Code Modulation audio formats.

EXPLODED VIEW

Standard Repair Process

A. Video error

Troubleshooting flowcharts for various video-related issues.

B. Power error

Troubleshooting guide for power-related problems, including no power.

D. Function error

Troubleshooting for external device recognition and remote control issues.

E. Noise

Procedures for identifying and resolving circuit and mechanical noise issues.

F. Exterior defect

Steps for diagnosing and rectifying external physical damage to the TV.

Standard Repair Process Detail Technical Manual

A. Video error_No video/Normal audio

Check LCD backlight for no video or normal audio issues.

A. Video error_Video error, video lag/stop

Method for checking TUNER input signal strength for video errors.

A. Video error_Vertical/Horizontal bar, residual image, light spot

Connection diagram analysis for vertical/horizontal bars and image defects.

B. Power error_No power

Checking the front power indicator for no power issues.

D. Function error

Method for checking remote control and Wi-Fi operation.

Appendix: Exchange Main Board

Appendix: Exchange Power Board (PSU)

Visual guide to common power board (PSU) failure symptoms.

Appendix: Exchange the Module

Examples of module defects like panel mura, light leakage, and press damage.

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