EasyManua.ls Logo

LG RT-21FB55M User Manual

LG RT-21FB55M
29 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-049B
MODEL:RT-21FB55M/R/RX/V/VE
MODEL:RT-21FB55VQ/VW/VX
MODEL:RT-21FB56VY/57R/V
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
ON/OFF
MENU
OK
VOL PR
VIDEO
AUDIO
L
R
AV
Question and Answer IconNeed help?

Do you have a question about the LG RT-21FB55M and is the answer not in the manual?

LG RT-21FB55M Specifications

General IconGeneral
Display TechnologyCRT
Aspect Ratio4:3
Screen Size21 inches
TV TypeStandard Definition
Input PortsComposite

Summary

Safety Precautions

General Guidance

Provides general safety advice for servicing electronic equipment, including using isolation transformers and handling components.

X-RAY Radiation Warning

Details X-ray radiation sources in the TV and safety measures for continued protection.

Leakage Current Check

Outlines procedures for checking AC leakage current on exposed metal parts for electrical shock safety.

Description of Controls

Remote Control Handset

Explains the function of each button on the remote control for operating the TV.

Front Panel Controls

Describes the buttons, indicators, and sockets located on the TV's front panel.

Specifications

General Specification

Lists technical parameters including receiving system, input voltage, market, and screen size.

Adjustment Instructions

Focus Adjustment

Step-by-step guide to adjust the picture focus on the CRT using FBT components.

Purity & Convergence Adjustment

Procedures for calibrating color purity and screen convergence using magnets and DY.

White Balance Adjustment

Instructions for adjusting the white balance for accurate color reproduction under different light conditions.

Deflection Setting Data Adjustment

Guide for adjusting screen deflection parameters like linearity and shift using SVC communicator.

Option Adjustment

Details setting model-specific functions via option data input for various features.

Troubleshooting

No Sound Troubleshooting

Flowchart for diagnosing and resolving sound issues in the TV.

No Raster Troubleshooting

Flowchart for diagnosing and resolving picture display (raster) problems.

No Picture / No Sound Troubleshooting

Troubleshooting steps for TVs exhibiting no picture and no sound.

AV / Mono Model Troubleshooting

Specific troubleshooting steps for AV input and mono sound models.

Printed Circuit Board

Component Location Guide

Lists components and their respective locations on the main printed circuit board.

Block Diagram

Exploded View

Exploded View Parts List

Provides a visual breakdown of the TV and a list of all associated parts.

Replacement Parts List

MC-049B Circuit Diagram

Related product manuals