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LG 49UF6700 User Manual

LG 49UF6700
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Printed in KoreaP/NO : MFL68682506 (1503-REV00)
CHASSIS : LA54H
MODEL : 49UF6700 49UF6700-UC
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
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LG 49UF6700 Specifications

General IconGeneral
BrandLG
Model49UF6700
CategoryLED TV
LanguageEnglish

Summary

SAFETY PRECAUTIONS

General Guidance

Safe servicing practices, transformer use, and component handling rules.

Leakage Current Checks

Procedures for checking AC leakage current (cold and hot).

SERVICING PRECAUTIONS

General Servicing Precautions

Basic safety rules for servicing TV receivers and handling components.

Handling Sensitive Components

Techniques for preventing damage to static-sensitive devices and soldering.

COMPONENT REPLACEMENT PROCEDURES

IC and Transistor Replacement

Methods for replacing ICs, transistors, diodes, fuses, and circuit board foil.

SPECIFICATION

Application Range and Test Conditions

Specifies the application range and the conditions for testing parts.

Test Methods

Details the methods used for performance and specification testing.

GENERAL SPECIFICATION

General Specification Details

Covers receiving system, channels, input voltage, screen, and environment.

SUPPORTED VIDEO RESOLUTIONS

Component Input Resolutions

Lists supported Y, CB/PB, CR/PR resolutions with frequencies.

HDMI INPUT SPECIFICATIONS

PC and DTV HDMI Resolutions

Details supported resolutions for PC and DTV via HDMI input.

ADJUSTMENT INSTRUCTION

Overview and Specifications

Outlines the manual's application, specifications, and adjustment items.

Main PCBA Adjustments

Details ADC adjustment and EDID download procedures for the main board.

EDID Data Details

EDID Data

Provides specific EDID data for HDMI connections.

FINAL ASSEMBLY ADJUSTMENT

White Balance Adjustment

Objective and method for adjusting white balance for optimal color accuracy.

Adjustment Commands and Methods

Lists commands, maps, and procedures for white balance adjustment.

White Balance Reference Data

White Balance Reference Data

Provides reference data for white balance adjustment coordinates.

OPTION SELECTION PER COUNTRY

Country Group and Tool Option Selection

Guides on selecting country groups and inspecting tool options.

GND and HI-POT Test

Test Preparation and Execution

Steps for preparing and performing GND and HI-POT tests with checkpoints.

AUDIO Output Check

Input Conditions and Specifications

Details audio input conditions and output power specifications.

Control Key Check UI

Test Method and UI Sequence

Describes how to check control key operation and the resulting UI display.

USB S/W Download (Service Only)

Software Update Procedure

Steps for updating TV software via USB, including FRC version updates.

TROUBLESHOOTING

No Video (Main IC Block)

Troubleshooting flowchart for issues related to the main IC block causing no video.

No Video (Back-end Block)

Troubleshooting flowchart for no video issues in the back-end block.

Digital / Analog TV Video No Signal

Troubleshooting steps for when there is no video from digital or analog TV signals.

AV Video No Signal

Troubleshooting steps for no video signal from AV inputs.

Component Video No Signal

Troubleshooting steps for when there is no video from component inputs.

HDMI Video No Signal (HDMI S/W Block)

Troubleshooting steps for no video signal from HDMI inputs (S/W block).

HDMI Video No Signal (URSA9, M1A Block)

Troubleshooting steps for HDMI no video issues (URSA9, M1A block).

USB No Storage

Troubleshooting steps for issues related to USB storage detection.

All Source Audio

Troubleshooting steps for audio issues across all input sources.

Digital / Analog TV No Sound

Troubleshooting steps for no sound from digital or analog TV signals.

AV No Sound

Troubleshooting steps for no sound from AV inputs.

Component No Sound

Troubleshooting steps for no sound from component inputs.

HDMI No Sound

Troubleshooting steps for no sound from HDMI inputs.

BLOCK DIAGRAM

EXPLODED VIEW

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