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LG RF-20CA80VE User Manual

LG RF-20CA80VE
32 pages
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COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MC-019A
MODEL : RF/
RT-20/21CA80VE/VQ/VW
MODEL : RF/RT
-14/21CA80M/MX
MODEL : CF-21CA810EX/RF-21CB90VQ
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
All manuals and user guides at all-guides.com
all-guides.com
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LG RF-20CA80VE Specifications

General IconGeneral
BrandLG
ModelRF-20CA80VE
CategoryTV
LanguageEnglish

Summary

Safety Precautions

General Guidance

General recommendations for safe servicing practices.

X-RAY Radiation Precautions

Details sources and precautions related to X-ray radiation.

Leakage Current Checks

Explains procedures for AC leakage current checks for safety.

Servicing Precautions

General Servicing Precautions

Outlines essential precautions for all servicing operations.

Handling Sensitive Components

Discusses handling components sensitive to static electricity.

Soldering Techniques

Provides recommended techniques for soldering components.

Servicing Procedures

Component Removal & Replacement

Details procedures for removing and replacing various components.

Circuit Board Repair

Provides instructions for repairing damaged circuit board traces.

Specifications

Video System & IF Frequencies

Details video input systems and intermediate frequencies.

Tuning & Antenna Specifications

Lists tuning ranges, systems, and antenna input impedance.

Sound & External Connections

Describes sound output, voice coil impedance, and external connections.

Features

Lists additional features like auto program and teletext.

Remote Control Functions

Remote Control Handset Overview

Explains the functions of buttons on the remote control handset.

Battery Installation

Instructions for installing batteries in the remote control.

Front Panel Controls

Front Panel Button Functions

Details the functions of buttons and indicators on the TV's front panel.

Disassembly Procedures

Chassis and Cabinet Removal

Steps for removing the chassis and back/front cabinets.

Picture Tube (CPT) Removal

Procedures for safely removing the picture tube assembly.

Picture Tube Handling Caution

Essential safety warnings for handling the picture tube.

Adjustment Procedures

Adjustment Safety & Equipment

Safety precautions and required test equipment for adjustments.

CDL Data Adjustment

Steps for adjusting CDL data using SVC-0 mode.

Option Data Adjustment

Guides for adjusting OPTION-1 and OPTION-2 settings.

Focus Adjustment

Procedures for adjusting picture focus using FBT volume.

Screen Voltage Adjustment

Steps for adjusting screen voltage using FBT volume.

White Balance Adjustment

How to adjust white balance using color analyzer.

AGC Adjustment

Steps for adjusting AGC voltage using remote controller.

Deflection Adjustments

Deflection Adjustment Preparation

Steps before performing deflection data adjustments.

Initial Deflection Setup Data

Provides initial default values for deflection settings.

Deflection Adjustment Procedures

Details adjustments for Vertical Linearity, Amplitude, Shift, and S-Correction.

Purity & Convergence Adjustment

Purity Adjustment Procedure

Steps to adjust picture purity using magnets and yoke.

Convergence Adjustment Procedure

Detailed steps to align color convergence using yoke and magnets.

Block Diagram

System Block Diagram

Illustrates the overall system architecture and component connections.

Exploded View

Exploded View Diagram

Visual representation of TV components and their assembly.

Exploded View Parts List

General Exploded View Parts Identification

Lists components with part numbers and descriptions based on the exploded view.

Exploded View (CB90)

CB90 Model Component View

Visual representation of CB90 model components and assembly.

Exploded View Parts List (CB90)

CB90 Specific Parts Identification

Lists components for CB90 model with part numbers.

Replacement Parts List

IC and Diode Parts

Lists replacement ICs and diodes with part numbers.

Capacitor Parts

Lists replacement capacitors with part numbers.

Resistor Parts

Lists replacement resistors with part numbers.

Fuse, Coil & Transformer Parts

Lists replacement fuses, coils, and transformers.

Switch & Filter/Crystal Parts

Lists replacement switches and filter/crystal components.

Miscellaneous Components

Accessories and Other Parts

Lists accessories, sockets, thermistors, tuners, and other miscellaneous parts.

Schematic Diagram

MC-019A Chassis Schematic

Detailed circuit schematic for the MC-019A chassis.

Printed Circuit Board Layout

PCB Component Layout

Diagram showing the physical layout of components on the printed circuit board.

Component Location Guide

Component Identification and Location

Guide for identifying component locations on the PCB.

Service Sheet

SVC Sheet Information

Contains specific service sheet information for the model.

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