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JVC AV-21TG16 User Manual

JVC AV-21TG16
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SERVICE MANUAL
COPYRIGHT © 2006 Victor Company of Japan, Limited
No.YA414
2006/6
COLOUR TELEVISION
YA41420066
AV-21TG16/U
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
POWER
123
456
789
RETURN+
0
-/--
PICTURE
MODE
SYSTEM
COLOUR
TV/VIDEO
CHANNEL
SCAN
OFF
TIMER
DISPLAY
MENU
VOLUME
MUTING
SOUND
CHANNEL
REMOTE CONTROL UNIT
RM-C360GY
BASIC CHASSIS
CG4
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JVC AV-21TG16 Specifications

General IconGeneral
Screen Size21 inches
Display TechnologyCRT
Aspect Ratio4:3
Audio OutputMono
Input/Output ConnectorsComposite Video
InputsComposite

Summary

SECTION 1 PRECAUTION

1.1 SAFETY PRECAUTIONS

General safety precautions for servicing and product operation.

SECTION 3 DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

Step-by-step instructions for disassembling the TV unit.

SECTION 4 ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

Preparation steps before starting TV adjustments, including equipment and warm-up.

4.3 MEASURING INSTRUMENT AND FIXTURES

Lists necessary measuring instruments and fixtures for TV adjustments.

4.4 ADJUSTMENT ITEMS

Categorizes various adjustment items for TV circuits like IF, Video, and Deflection.

4.6 BASIC OPERATION OF SERVICE MENU

4.6.2 SERVICE MENU ITEMS

Overview of different adjustment categories available within the service menu.

4.6.3 HOW TO ENTER THE SERVICE MENU

Instructions on accessing the service menu using specific remote control button combinations.

4.6.7 METHOD OF SETTING

Guidance on how to perform adjustments for IF, V/C, DEF, VSM PRESET, and SETUP TOUR items.

4.8 ADJUSTMENT PROCEDURE

4.8.2 TUNER / IF CIRCUIT

Details adjustments for the tuner and IF circuits, including IF VCO and Delay Point.

4.8.4 DEFLECTION CIRCUIT

Covers adjustments for vertical and horizontal positioning, height, linearity, and S-curve.

4.8.5 VIDEO CIRCUIT

Outlines adjustments for White Balance, Sub Bright, Sub Contrast, Sub Colour, and Sub Tint.

SECTION 5 TROUBLESHOOTING

Safety precautions

Troubleshooting

SCHEMATIC DIAGRAMS

STANDARD CIRCUIT DIAGRAM

Contains detailed circuit diagrams for the television's internal components.

BLOCK DIAGRAM

Overall block diagram illustrating the main functional units of the TV and their interconnections.

CIRCUIT DIAGRAMS

Contains detailed circuit diagrams for the television's internal components.

VOLTAGE CHARTS

Table listing voltage measurements at various points on the main PWB and CRT socket PWB.

WAVEFORMS

Displays typical signal waveforms at key test points on the main PWB and CRT socket PWB.

PARTS LIST

PRINTED WIRING BOARD PARTS LIST

Comprehensive list of components on the main Printed Wiring Board (PWB).

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