EasyManua.ls Logo

LG RF-21FA20 - User Manual

LG RF-21FA20
30 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MC-014A
MODEL:RF-21FA20/Q/PQ
MODEL:CF-21Q20EH
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
All manuals and user guides at all-guides.com
Question and Answer IconNeed help?

Do you have a question about the LG RF-21FA20 and is the answer not in the manual?

LG RF-21FA20 Specifications

General IconGeneral
BrandLG
ModelRF-21FA20
CategoryTV
LanguageEnglish

Summary

SAFETY PRECAUTIONS

Important Safety Notice

Key safety-related characteristics and replacement guidelines.

General Guidance for Servicing

Guidelines for safe servicing, handling components and picture tubes.

X-RAY Radiation Warning

Explains X-RAY radiation source and protection measures.

AC Leakage Current Checks

Procedures for checking AC leakage current for safety.

SPECIFICATIONS

Video, IF, and Tuning Specifications

Covers video input systems, IF, tuning ranges, and systems.

Audio, Features, and Display Specs

Details sound output, OSD, voice coil impedance, and features.

External Connectivity and I;O

Describes external connections and input/output signal levels.

DESCRIPTION OF CONTROLS (Remote Handset)

Remote Control Functions (Part 1)

Details POWER, MUTE, ARC, TV/AV, EYE, TURBO buttons.

Remote Control Navigation and Selection

Explains program/menu selection, volume, and OK button.

Remote Control Memory and VCR Functions

Covers Status Memory and VCR buttons.

REMOTE CONTROL DETAILS

Remote Control Functions (Part 2)

Details I/II, LIST, PIP, MENU, SWAP, SLEEP, and colored buttons.

Remote Control Battery Installation

Instructions for installing batteries in the remote control handset.

Front Panel Controls

Front Panel Power and Indicators

Describes the main power switch and standby indicator light.

Front Panel Buttons and Sockets

Explains functions of front panel buttons and external sockets.

Eye Function Control

Explains the 'Eye' function for picture adjustment.

DISASSEMBLY INSTRUCTIONS

Important Service Precautions

Notes on using isolation transformers and handling components.

Cabinet and Speaker Removal

Steps for removing the back cabinet and speakers.

CPT and Picture Tube Handling Caution

Procedures for CPT removal and safe handling of the picture tube.

ADJUSTMENT INSTRUCTIONS

Safety and Equipment for Adjustments

Safety guidelines and required test equipment for adjustments.

RF AGC and Screen Voltage Adjustments

Procedures for RF AGC and screen voltage adjustments.

Focus and Deflection Data Adjustments

Steps for focus adjustment and deflection data setup.

ADJUSTMENT PROCEDURES (Continued)

Horizontal Geometry Adjustments

Adjustments for EW, EP, EC, ET parameters.

Initial Adjustment Data Lists

Reference data for various adjustment parameters.

White Balance Adjustment Procedure

Steps for adjusting white balance for color accuracy.

OPTION Adjustment

Option 1 and Option 2 Functions

Settings for OPTION 1 (YUV/W, GAME, etc.) and OPTION 2 (SCART, AV2, etc.).

Option 3 Functions

Settings for OPTION 3 (200PR, CH+AU, etc.).

Trouble Shooting (No Power & Vertical Deflection)

No Power Issues (SMPS)

Troubleshooting flowchart for no power when SMPS is working or not.

No Vertical Deflection Troubleshooting

Troubleshooting steps for issues with vertical deflection.

Trouble Shooting (Screen & Distortion)

Heater, Screen, and Waveform Issues

Troubleshooting for heater element, screen, and waveform anomalies.

Barrel Distortion Troubleshooting

Steps for diagnosing and fixing barrel distortion.

Trouble Shooting (Sound Issues)

No Sound Troubleshooting (Picture OK)

Flowchart for troubleshooting sound issues when picture is normal.

Headphone Jack Sound Issues

Troubleshooting for sound problems specific to the headphone jack.

Trouble Shooting (Channel & PIP)

Channel Reception Troubleshooting

Troubleshooting flowchart for problems catching channels.

No PIP Troubleshooting

Steps for diagnosing issues with the PIP feature.

EXPLODED VIEW: 21 FA20

Exploded Diagram (21 FA20)

Visual representation of parts assembly for the 21FA20 model.

EXPLODED VIEW PARTS LIST (21 FA20)

Parts Identification by Location (21 FA20)

List of parts with location numbers, part numbers, and descriptions.

EXPLODED VIEW: 21 Q20

Exploded Diagram (21 Q20)

Visual representation of parts assembly for the 21Q20 model.

EXPLODED VIEW PARTS LIST (21 Q20)

Parts List by Location (21 Q20)

Detailed list of parts for the 21Q20 model with location and part numbers.

REPLACEMENT PARTS LIST (Semiconductors)

IC Components List

List of replacement IC parts with part numbers and descriptions.

Diode Components List

List of replacement diode parts with part numbers and descriptions.

Transistor Components List

List of replacement transistor parts with part numbers and descriptions.

REPLACEMENT PARTS LIST (Capacitors Part 1)

Capacitor Components (Page 21)

List of replacement capacitor parts with part numbers and descriptions.

REPLACEMENT PARTS LIST (Capacitors Part 2 & Connectors)

Capacitor Components (Page 22)

List of replacement capacitor parts with part numbers and descriptions.

Connector Components List

List of replacement connector parts with part numbers and descriptions.

REPLACEMENT PARTS LIST (Other Components)

Transistor Components (Continued)

List of replacement transistor parts with part numbers and descriptions.

Core, Coil, and Fuse Components

List of replacement core, coil, and fuse parts.

Resistor Components (Part 1)

List of replacement resistor parts with part numbers and descriptions.

REPLACEMENT PARTS LIST (Resistors Part 2)

Resistor Components (Page 24)

List of replacement resistor parts with part numbers and descriptions.

REPLACEMENT PARTS LIST (Resistors Part 3)

Resistor Components (Page 25)

List of replacement resistor parts with part numbers and descriptions.

REPLACEMENT PARTS LIST (Miscellaneous)

Resistor Components (Part 4)

List of replacement resistor parts with part numbers and descriptions.

Spark Gap, Switch, Filter & Crystal

Lists spark gaps, switches, and filters.

Accessories List

Lists accessories like manuals and remote controllers.

SCHEMATIC DIAGRAM

MC-014 A Chassis Schematic

Detailed schematic diagram of the MC-014A chassis.

PRINTED CIRCUIT BOARD & BLOCK DIAGRAM

Printed Circuit Board Layout

Shows the layout of components on the main PCB.

Block Diagram Overview

High-level functional block diagram of the TV system.

SVC. SHEET

Service Sheet Data

Contains specific service data for the model.

Related product manuals