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SM-Z-89
Service manual
Zenith SM-Z-89 Service Manual
Computer system
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Specifications
Cpu Boards Z·89/90
Setup and Testing
Power Line Considerations
Cabinet Removal
Zds System Configuration
Terminal Logic Circuit Board
CPU Logic Circuit Board
Serial Interface
Memory Map
I/O Port Usage
Operation
Command Summary
Keyboard Operation
Normal Modes and Keys
Circuit Description
Power Supply Circuit
Video Deflection Circuit Board
Video Driver Circuit Board
Terminal Logic Circuit Board
CPU Logic Circuit Board
Serial Interface I/O Circuit Board
Service
CRT Adjustment
Switch Configurations
CPU Logic Circuit Board
Rotational Speed Test
Memory Testing
Troubleshooting Charts
Circuit Board X-Ray Views
Semiconductor Identification Charts
Component Number Index
Part Number Index
Replacement Parts List
Power Supply
Video Deflection Circuit Board
Video Driver Circuit Board
Terminal Logic Circuit Board
CPU Logic Circuit Board
Chassis Parts
Serial Interface I/O Circuit Board
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SM-Z-B9/90
Computer System
Service Manual
2.I'N
data
~
systems
ZENITH DATA SYSTEMS
SAINT JOSEPH, MICHIGAN 49085
585-7
Copyright
©
1982
Zenith Data Systems
All Rights Reserved
Printed in the United States of America
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This manual is also suitable for:
Sm-z-90
Z-89
Z-90
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