Zenith Z-90 Manuals

Manuals and User Guides for Zenith Z-90. We have 1 Zenith Z-90 manual available for free PDF download: Service Manual

Zenith Z-90 Service Manual

Zenith Z-90 Service Manual (122 pages)

Computer System

Brand: Zenith | Category: Desktop | Size: 6.4 MB

Table of Contents

Table of Contents
4
Specifications
5
- Cpu Boards Z·89/90
  6
Setup and Testing
7
- Power Line Considerations
  7
- Cabinet Removal
  8
Zds System Configuration
9
- Terminal Logic Circuit Board
  9
- CPU Logic Circuit Board
  12
- Serial Interface
  28
- Memory Map
  30
- I/O Port Usage
  30
Operation
31
- Command Summary
  31
- Keyboard Operation
  33
- Normal Modes and Keys
  35
Circuit Description
39
Service
61
- CRT Adjustment
  62
- Switch Configurations
  64
- CPU Logic Circuit Board
  66
- Rotational Speed Test
  82
- Memory Testing
  83
- Troubleshooting Charts
  85
Circuit Board X-Ray Views
89
Semiconductor Identification Charts
95
- Component Number Index
  95
- Part Number Index
  98
Replacement Parts List
117
- Power Supply
  117
- Video Deflection Circuit Board
  117
- Video Driver Circuit Board
  119
- Terminal Logic Circuit Board
  119
- CPU Logic Circuit Board
  120
- Chassis Parts
  121
- Serial Interface I/O Circuit Board
  122

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