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Toshiba 20A23 - User Manual
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SERVICE MANUAL
COLOR TELEVISION
20A23
FILE NO. 050-200312
DOCUMENT CREATED IN JAPAN, May, 2003
2
Table of Contents
Main Page
Default Chapter
1
Service Manual
1
Servicing Notices on Checking
2
How to Order Parts
2
Important
2
Table of Contents
3
General Specifications
4
1 Removal of Anode Cap
9
Disassembly Instructions
9
2 Removal and Installation of Flat Package IC
10
Confirmation of Hours Used
12
Service Mode List
12
When Replacing Eeprom (Memory) IC
12
Adjustment Procedure
13
Basic Adjustments
13
Electrical Adjustments
13
Purity and Convergence
16
Block Diagram
18
Printed Circuit Boards Main/Crt
19
Micon/Chroma/Tuner
26
Main/Crt
26
Waveforms
26
Mechanical Exploded Views
28
Mechanical Replacement Parts List
29
Electrical Replacement Parts List
30
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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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