EasyManua.ls Logo

LG 21FX4 AG User Manual

LG 21FX4 AG
31 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MC-059B
MODEL: 21FX4AG/AGE/AGS/AL
MODEL: 21FX4AG/AGE/AGS/AL-TH
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
Oct., 2007
Printed in ChinaP/NO : 3828VD0235Q
Internal Use Only
Question and Answer IconNeed help?

Do you have a question about the LG 21FX4 AG and is the answer not in the manual?

LG 21FX4 AG Specifications

General IconGeneral
BrandLG
Model21FX4 AG
CategoryTV
LanguageEnglish

Summary

SAFETY PRECAUTIONS

Important Safety Notices

Key safety warnings and component replacement guidance.

General Servicing Guidance

General advice for safe servicing procedures and handling.

X-RAY Radiation Protection

Information on X-RAY sources and protection measures.

Electrical Safety Checks

Procedures for checking AC leakage current for safety.

DESCRIPTION OF CONTROLS

Remote Control Handset

Details of buttons on the remote control and their functions.

Front Panel Controls

Explanation of buttons and connectors on the TV's front panel.

SPECIFICATIONS

Scope and Requirements

Defines applicability and testing conditions for specifications.

General TV Specifications

Table of general technical specifications for the TV.

Test Methods

Specifies the methods used for testing product performance.

ADJUSTMENT

Purity and Convergence

Procedures for picture purity and convergence adjustments.

Dynamic Convergence & Focus

Adjusting DYC, White Balance, and Focus Voltage.

Panel Settings and Data

Adjusting Sub-Brightness, Deflection Data, and IIC BUS.

PRINTED CIRCUIT BOARD

Main PCB Layout

Diagram showing component layout on the main PCB.

Side A/V PCB Diagram

Diagram of the Side A/V board components.

TROUBLE SHOOTING

TV Signal & Processing Issues

Troubleshooting for tuner, IF, video, and sound sections.

Power Supply & Deflection Issues

Problems with SMPS, Vertical, and Horizontal sections.

Audio & CRT Drive Issues

Troubleshooting for sound processing and CPT drive circuits.

BLOCK DIAGRAM

System Overview

Diagram showing the main functional blocks of the TV.

EXPLODED VIEW

Component Diagram

Visual representation of TV components for assembly/disassembly.

Parts List

List of parts with their location numbers and descriptions.

REPLACEMENT PARTS LIST

SCHEMATIC DIAGRAM

MC-059B Chassis Diagram

Detailed circuit diagram of the MC-059B chassis.

Related product manuals