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LG 55UJ634V User Manual

LG 55UJ634V
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P/NO : MFL69879812 (1707-REV01)
CHASSIS : UD74P
MODEL : 55UJ634V 55UJ634V-ZD
55UJ635V 55UJ635V-ZF
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED TV
SERVICE MANUAL
CONFIDENTIAL
Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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LG 55UJ634V Specifications

General IconGeneral
Screen shapeFlat
Response time- ms
Display diagonal55 \
Display brightness- cd/m²
Display technologyLED
Native aspect ratio16:9
LED backlighting typeDirect-LED BLU
Display diagonal (metric)139 cm
Supported graphics resolutions3840 x 2160
Motion interpolation technology-
Product colorBlack
Panel mounting interface300 x 300 mm
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power consumption (standby)0.3 W
Power consumption (typical)107 W
3DNo
Annual energy consumption148 kWh
Package depth187 mm
Package width1355 mm
Package height859 mm
Package weight20400 g
Audio formats supportedAAC, AAC HE, AC3, EAC3, MP2, MP3, PCM, WMA, apt-X
Video compression formatsHEVC, VP9
Tuner typeAnalog & digital
Digital signal format systemDVB-C, DVB-S2, DVB-T2
Operating system version3.5
Operating system installedWeb OS
Audio decodersDTS, DTS-HD
RMS rated power20 W
Number of speakers2
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.
Ethernet LAN (RJ-45) ports1
Consumer Electronics Control (CEC)SimpLink
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity0
Programming period8 day(s)
Cables includedAC
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)258 mm
Height (with stand)790 mm
Weight (with stand)15600 g
Depth (without stand)84 mm
Width (without stand)1249 mm
Height (without stand)730 mm
Weight (without stand)14200 g

Summary

Safety Precautions

General Guidance

Guidelines for safe servicing and handling of electrical components.

Leakage Current Hot Check

Procedure for checking AC leakage current under operational conditions.

Servicing Precautions

General Servicing Precautions

General guidelines for performing service operations safely and correctly.

Electrostatically Sensitive (ES) Devices

Precautions for handling components sensitive to static electricity.

General Soldering Guidelines

Best practices for soldering components to prevent damage.

Specification

Application range

Defines the scope of application for this service manual.

Requirement for Test

Specifies conditions and requirements for product testing.

Test method

Outlines the methodologies used for product testing and validation.

Model General Specification

Details general specifications for various models and regions.

External Input Format

Component Input (Y, CB/PB, CR/PR)

Specifies input formats for component video signals.

HDMI Input (PC)

Details PC input formats via HDMI.

HDMI Input (DTV)

Details DTV input formats via HDMI.

Software Update

USB Update

Procedure for updating software via USB storage device.

NSU Update

Procedure for updating software using Network Software Update.

Block Diagram

K3Lp Block Diagram (External)

External block diagram of the K3Lp chipset and its connections.

K3Lp Block Diagram (Internal)

Internal block diagram of the K3Lp SoC.

K3Lp Power Block

Power block diagram for the K3Lp chipset.

Exploded View

Disassembly Guide

Unlock Screws

Instructions for unlocking screws to disassemble the back cover.

Disassemble Back Cover

Steps to remove and disassemble the back cover.

Detach the Tape

Instructions for detaching tape during disassembly.

Separate Connectors

Steps to disconnect various connectors.

Trouble Shooting Guide

A. Video Error

Troubleshooting steps for video-related errors.

B. Power Error

Troubleshooting steps for power-related errors.

C. Audio Error

Troubleshooting steps for audio-related errors.

D. Function Error

Troubleshooting steps for functional errors.

Smart JIG Power Diagnosis

Power Board Muitl Gender JIG Diagram

Diagram of the power board multi-gender JIG.

Smart Jig Voltage Setting

Guide for setting voltage on the Smart JIG.

15Y OLED Power Board Diagnostic Method (1)

Diagnostic method for specific 15Y OLED models.

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