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Toshiba 20A23 Service Manual
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SERVICE MANUAL
COLOR TELEVISION
20A42
FILE NO. 050-200209
DOCUMENT CREATED IN JAPAN, Jun., 2002
2
Table of Contents
Servicing Notices on Checking
2
How to Order Parts
2
General Specifications
3
Removal of Anode Cap
8
Installation
8
Removal and Installation of Flat Package IC
9
Service Mode List
11
Confirmation of Hours Used
11
When Replacing Eeprom (Memory) IC
11
Before Making Electrical Adjustments
12
Basic Adjustments
12
Purity and Convergence Adjustments
15
Electrical Adjustment Parts Location Guide (Wiring Connection)
16
Block Diagram
17
Chroma Schematic Diagram
21
Power Schematic Diagram
23
Mechanical Exploded View
29
Mechanical Replacement Parts List
30
Electrical Replacement Parts List
31
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Toshiba 20A23 Specifications
General
Screen Size
20 inches
Display Type
CRT
Resolution
480i
Aspect Ratio
4:3
Display Technology
CRT
Refresh Rate
60 Hz
Speakers
Mono
Inputs
Composite
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