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LG 32LF550U User Manual

LG 32LF550U
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 32LF550U Specifications

General IconGeneral
BrandLG
Model32LF550U
CategoryLED TV
LanguageEnglish

Summary

SAFETY PRECAUTIONS

Leakage Current Hot Check

Procedure for AC leakage current check using specific equipment.

SERVICING PRECAUTIONS

General Servicing Precautions

Guidelines for safe and proper servicing procedures.

Electrostatically Sensitive Devices Handling

Procedures for handling sensitive electronic components to prevent static damage.

General Soldering Guidelines

Best practices for soldering, including tool selection and technique.

SPECIFICATIONS

Application Range & Test Requirements

Defines scope, test conditions, and parameters for the TV.

Test Methods & Model Specifications

Outlines testing procedures and country-specific DTV support.

Input/Output Port Specifications

Details specifications for HDMI, USB, DVB, Ethernet, Scart, and other ports.

VIDEO RESOLUTIONS (2D)

Component Input Resolutions

Lists supported resolutions and frequencies for Component input.

HDMI Input Resolutions (PC/DTV)

Details supported resolutions and frequencies for HDMI PC and DTV inputs.

VIDEO RESOLUTIONS (3D)

3D HDMI, DTV, and USB Input Modes

Lists supported resolutions and modes for 3D HDMI, DTV, and USB inputs.

ADJUSTMENT INSTRUCTIONS

Application Range and Designation

Defines scope and general instructions for the adjustment process.

Main PCB Check and Download Procedures

Steps for main PCB checks, boot file download, and USB software updates.

EDID Data and Function Check

Covers EDID data management and final function check procedures.

ADC Process and EDID Download

Explains optional ADC calibration and EDID download procedures.

TOTAL ASSEMBLY LINE PROCESS

White Balance Adjustment

Procedures for adjusting white balance using a color analyzer and specific parameters.

Auto-Control Interface and RS-232C Commands

Guidelines for setting up the adjustment environment and using RS-232C commands.

Manual White Balance and 3D Function Test

Steps for manual WB and testing 3D functionality.

IR Emitter Inspection and Outgoing Configuration

Inspects IR emitter function and sets final outgoing configuration.

HI-POT TEST

HI-POT Auto-Check Preparation and Procedure

Details steps for preparing and performing automated electrical safety tests.

Checkpoint and Test Specifications

Defines test voltages, currents, and points for electrical safety checks.

Model Name and Serial Number Download

Procedures for downloading model name and serial number via service tools.

BLOCK DIAGRAM

CIS T2/C/S2 3D Model Block Diagram

Illustrates main components and connections for the CIS T2/C/S2 3D model.

CIS T2/C/S2 2D Model Block Diagram

Shows the block diagram for the CIS T2/C/S2 2D model.

EU T2/C/S2 2D Model Block Diagram

Depicts the block diagram for the European T2/C/S2 2D model.

EU T/C 2D Model Block Diagram

Illustrates the block diagram for the European T/C 2D model.

EXPLODED VIEW

Component Exploded View

Displays the physical layout and identification of TV components for servicing.

TROUBLESHOOTING GUIDE

Troubleshooting Overview

Introduces the guided troubleshooting process for common issues.

A. VIDEO ERROR

Video Error Diagnosis and Resolution

Covers no video, tuning, color, and external device issues.

B. POWER ERROR

Power Error Diagnosis and Resolution

Steps for diagnosing and resolving no power or intermittent power issues.

C. AUDIO ERROR

Audio Error Diagnosis and Resolution

Steps for resolving no audio or distorted sound issues.

D. FUNCTION ERROR

Function Error Diagnosis and Resolution

Troubleshoots remote control, external device recognition, and other function errors.

E. NOISE

Noise Identification and Resolution

Steps to identify and resolve circuit or mechanical noise issues.

F. EXTERIOR DEFECT

Exterior Damage Diagnosis and Replacement

Steps for diagnosing and addressing physical damage to modules, cabinets, or remotes.

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