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LG 43LM5700PUA User Manual

LG 43LM5700PUA
91 pages
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P/NO : MFL71388802 (2001-REV01)
CHASSIS : LA94M
MODEL : 43LM5700PUA
MODEL : 43LM5700DUA
LED TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONFIDENTIAL
Copyright © 2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
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LG 43LM5700PUA Specifications

General IconGeneral
Screen Typeled
Colorblack
Wall Mount200mm x 200mm
Featuresresolution upscaler, noise reduction, dynamic color, hdr dynamic tone mapping
Tunerdigital
Screen Size42.5 inches, 43 inches
Screen Technologystandard led
Resolutionhd (720p)
Refresh Rate60hz
HDRyes
HDR Formathdr 10, hybrid log-gamma (hlg)
Built-In Speakersyes
Surround Sounddts-hd
Speakers Output10 watts
HDMI Ports2
HDMI 2.1 Ports0
HDMI ARC Portsyes
USB Ports1
USB 2.0 Ports1
Ethernetyes
RF Antennayes
Networkbuilt-in wi-fi, ethernet
Digital Optical Audio Outputs1
Component Video Inputs0
Composite Video Inputs1
DVI0
SmartTVwebos
Streaming Servicesdisney+, google play movies & tv, hulu, netflix, pandora, prime video, showtime, starz, sling tv, youtube
Smart Applicationsamazon alexa, google assistant
Voice Assistantamazon alexa, google assistant
Remote Controlstandard
3Dno
Power Consumption81 kilowatt hours
Depth with Stand7.4 inches
Height with Stand24.2 inches
Width with Stand38.5 inches
Net Weight with Stand17.9 pounds
Depth without Stand3.2 inches
Height without Stand22.6 inches
Net Weight without Stand17.6 pounds

Summary

Safety Precautions

Important Safety Notice

Essential safety parts require replacement with specified components to prevent hazards.

General Guidance

Guidance on using isolation transformers and handling fuses during servicing.

Leakage Current Hot Check

Procedure for checking AC leakage current with a hot circuit.

Servicing Precautions

General Servicing Precautions

General guidelines for safe and effective servicing procedures.

Electrostatically Sensitive (ES) Devices

Techniques to prevent damage to ES devices from static electricity.

General Soldering Guidelines

Guidelines for proper soldering techniques and equipment usage.

Specification

Application range

Defines the scope of application for the service manual.

Test condition

Specifies the conditions under which parts are tested.

Test method

Outlines the methods used for testing TV performance and specifications.

Electrical Specification

Details the electrical characteristics and parameters of the TV.

External Input Support Format

HDMI Input (PC/DTV)

Lists supported resolutions, frequencies, and pixel clocks for HDMI input.

External Input Support Format - DTV

HDMI Input (PC/DTV) - DTV

Lists supported resolutions, frequencies, and pixel clocks for DTV HDMI input.

External Input Support Format - Component

Component Input

Lists supported resolutions and frequencies for component input.

Software Update

USB

Step-by-step guide for updating TV software via USB.

Software Update - NSU

NSU

Procedure for updating software using Network Service Update (NSU).

Block Diagram

Exploded View

Important Safety Notice

Essential safety parts require replacement with specified components to prevent hazards.

Exploded View (Module)

Important Notice

Specifies that MRC is for Module Repair Center use only.

Disassembly Guide

Disassembly Guide (Module)

Trouble Shooting Guide

Contents of Standard Repair Process

Standard Repair Process - Video Errors

A. Video error

Troubleshooting steps for video-related errors.

Standard Repair Process - Power Errors

B. Power error

Troubleshooting steps for power-related errors.

Standard Repair Process - Audio Errors

C. Audio error

Troubleshooting steps for audio-related errors.

Standard Repair Process - Function Errors

D. Function error

Troubleshooting steps for general function errors.

Standard Repair Process - Noise Issues

E. Noise

Troubleshooting steps for noise-related issues.

Standard Repair Process - Exterior Defects

F. Exterior defect

Troubleshooting steps for exterior physical defects.

Standard Repair Process Detail Technical Manual - Part 1

Standard Repair Process Detail Technical Manual - Part 2

Standard Repair Process Detail Technical Manual - Video Error (No Video)

A. Video error_No video/Normal audio

Steps to check LVDS connection for no video/normal audio.

Standard Repair Process Detail Technical Manual - Video Error (White Balance)

A. Video error_No video/Normal audio

Procedure for checking and adjusting white balance.

Standard Repair Process Detail Technical Manual - Video Error (Lag/Stop)

A. Video error_Video error, video lag/stop

Method for checking tuner input signal strength.

Standard Repair Process Detail Technical Manual - Software Version Check

A. Video error_Video error, video lag/stop

Method for checking software (S/W) version.

Standard Repair Process Detail Technical Manual - Tuner Check

A. Video error_Video error, video lag/stop

Procedure for checking the tuner part.

Standard Repair Process Detail Technical Manual - Video Error (Bars/Spots)

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

Diagram showing connections for external input.

Standard Repair Process Detail Technical Manual - Video Error (Color)

A. Video error_Color error

Checking the reconnection condition of the Link Cable (LVDS).

Appendix - Image Error Examples

Appendix - Image Error Examples (Continued)

Appendix - Main Board Symptoms

Appendix - Main Board Symptoms (Continued)

Appendix - Main Board Symptoms (Continued)

Appendix - Module Symptoms

Appendix - Module Symptoms (Continued)

Appendix - Module Symptoms (Continued)

Appendix - T-Con Symptoms

Appendix - T-Con Symptoms (Continued)

Appendix - Power Board (PSU) Exchange

Standard Repair Process Detail Technical Manual - Power Error (No Power)

B. Power error_No power

Checking the front power indicator and basic functions.

Standard Repair Process Detail Technical Manual - Power Error (Voltage Check)

B. Power error_No power

Checking power input voltage and standby voltage.

Standard Repair Process Detail Technical Manual - Power Error (Mode Check)

B. Power error_Off when on, off whiling viewing

Method for checking power off modes.

Standard Repair Process Detail Technical Manual - Audio Error (Sound Output)

C. Audio error_No audio/Normal video

Method for checking sound output settings in the menu.

Standard Repair Process Detail Technical Manual - Audio Error (Speaker Check)

C. Audio error_No audio/Normal video

Checking voltage and speaker connections for audio issues.

Standard Repair Process Detail Technical Manual - Function Error (Remote Control)

D. Function error

Checking remote control operation and IR/Eye sensor.

Standard Repair Process Detail Technical Manual - Function Error (Motion Remote/WiFi)

D. Function error

Checking motion remote/Wi-Fi operation.

Standard Repair Process Detail Technical Manual - Other Functions (Access Remote)

E.Etc

How to access the service remote control.

Standard Repair Process Detail Technical Manual - Other Functions (Remote Definition)

E.Etc

Definition of remote control functions and buttons.

Standard Repair Process Detail Technical Manual - Other Functions (Remote Usage)

E.Etc

Explanation of various service remote control functions.

Standard Repair Process Detail Technical Manual - Post Main Board Replacement

E.Etc

Checking items after Main Board replacement.

Standard Repair Process Detail Technical Manual - Test Patterns

E.Etc

Using ADJ Key for test patterns and error checking.

Smart JIG Power Diagnosis Guide

Power Board JIG Diagram

Power Board JIG Model List

Power Board JIG Connection Guide

Smart Jig Voltage Setting

15Y OLED Power Board Diagnostic Method

15Y OLED Power Board Diagnostic Method (Continued)

16Y OLED(B6) Power Board Diagnostic Method

16Y OLED(C6) Power Board Diagnostic Method

16Y OLED(E6) Power Board Diagnostic Method

16Y OLED(G6) Power Board Diagnostic Method

17Y OLED Power Board Diagnostic Method

17Y OLED(W7) Power Board Diagnostic Method

16Y/17Y LED 18Pin Power Board Diagnostic Method

16Y LED Power Board Diagnostic Method (UH95/UH96)

16Y/17Y LED Power Board Diagnostic Method (UH85/UH93)

16Y/17Y LED 12Pin Power Board Diagnostic Method

16Y LED 12Pin Power Board Diagnostic Method

17Y LED 28Pin Power Board Diagnostic Method

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