Corvus systems Corvus Concept Manuals

Manuals and User Guides for Corvus systems Corvus Concept. We have 1 Corvus systems Corvus Concept manual available for free PDF download: Service Manual

Corvus systems Corvus Concept Service Manual

Corvus systems Corvus Concept Service Manual (169 pages)

PERSONAL WORKSTATION

Brand: Corvus systems | Category: Desktop | Size: 6 MB

Table of Contents

Table of Contents
7
Chapter 1-0Vi~Rview

11
- Scope of Chapter
  12
- Concept Mlodules
  12
  - Electronics Tray
    12
    
    Processor Board
    12
    
    Memory Board
    13
  - Video Monitor
    13
  - Power Supply
    13
- Concept Options
  14
  - Operating System Software
    14
  - Floppy Disk Drive
    14
  - Winchester Disk Drive Options
    14
  - Archival and Back-Up Option
    14
  - Network Option
    14
Chapter 2-Functional Description

16
- Scope of Chapter
  18
- Concept Processor Board
  18
  - Microprocessor
    18
  - Bus Buffers
    19
  - Memory Mapper
    19
    
    Roms and Static RAM
    19
    
    Omninet
    20
  - ROM and Static RAM Sockets
    20
  - 50-Pin I/O Slots
    21
  - Adlc
    21
  - Data Communication Ports
    22
    
    Interrupts
    23
  - Memory Arbitration
    24
    
    Calendar
    25
  - Bell, Timer, and VIA
    25
  - Data Acknowledge
    25
  - Data Acknowledge Timing
    25
- Concept Mlemory Board
  26
  - Oscillator
    26
  - Horizontal Timing
    26
  - Vertical Timing
    26
  - RAM Timing
    26
  - Memory Selection
    26
  - Horizontal Timing Circuit
    26
  - Video Address Counter
    27
  - Memory Multiplexing
    27
  - Memory Array
    27
  - Memory Buffers
    28
  - Video Shift Registers
    28
Chapter 3-Disassembly

30
- Installation
  32
- Visual Inspection
  32
- Video Monitor Removal and Disassembly
  32
  - Concept Rear View
    32
  - Latch Screws
    32
- Keyboard Disassembly and Cleaning
  33
  - Corvus Dealer Service
    33
- Electronics Tray Disassembly and Assembly
  33
- Electronics Tray Power Connections
  33
- Power Supply Removal
  34
Chapter 4-Adjustments

36
- Scope of Chapter
  38
- Concept Power Supply Adjustments
  38
- Preparations for Video Adjustments
  39
- Video Alignment and Adjustment
  39
- CRT Adjustment Yoke
  40
- Horizontal and Vertical PCA
  40
Chapter 5-Troubleshooting

44
- Scope of Chapter
  46
- Levell Troubleshooting
  46
  - Video Monitor
    46
- CORCOM Setting
  47
  - Power Supply
    48
- Monitor Voltage Test Points
  48
  - Power-On Self Tests
    49
  - Self Test Error Codes
    50
  - Boot Problems
    51
- Rev 03 Boot Switch Settings
  52
- Rev 04 Boot Switch Setting
  52
- Level 2 Troubleshooting
  53
  - Macsbug Installation Procedures
    53
- Rev 03 ROM and RAM Locations
  54
- Rev 04 ROM and RAM Locations
  54
  - Communicating with Macsbug
    55
  - Operating Procedures
    55
  - Macsbug Routines
    56
- Component Level Troubleshooting
  56
Appendix Aschematics and Assembly Drawings

62
- Assembly Drawings
  62
- Appendixb Troubleshooting Flow Chart
  78
Appendix B: Troubleshooting Flow Chart

83
Appendix C: Test Point Signals

83
- Processor Board Signals
  83
- Memory Board Signals
  89
Appendix 0: Timing Charts

93
Appendix E: Macsbug

101
- Macsbug Commands
  101
- Macsbug Routines
  105
- Self Test Routines
  111
- General Memory and 110 Maps
  117
- ROM Mapping of I/O Slots
  121
- Omninet
  129
- Clock/Calendar/ Altmap/Volume
  133
- Data Communication and Keyboard Registers
  137
Appendix F: Maps

143
Appendix G: Memory Board Jumper Layout

143
- Data Communication Ports Jl and J2
  151
- Board Connectors J4, J5, and J6
  155
- Additional Connectors
  159
Appendix H: Connector Descriptions

163
Appendix I: Concept Parts List

163
- Appendixj Specifications
  169
  - Motorola MC68000
    169

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