Canon A-200 series Service Manual

• 12

  11-1-1. System Configuration

• 12

  11-2-1. General
• 13

  11-2-2. Monochrome Display Adapter Board
• 13

  11-2-3. Color Display Adapter Board
• 14

  Floppy Disk Drive MDD-211
• 15

  Keyboard Unit

• 29

  IV-2-1. Keyboard Connection
• 29

  IV-2-2. AC Power Cord Connection
• 29

  IV-2-3. Connection to Peripherals
• 30

  IV-2-4. Adjustment of Typing Angle

• 31

  IV-3-1. Expansion RAM Board
• 31

  IV-3-2. Color Display Adapter Board
• 32

  IV-3-3. Ndc (8087)

• 33

  IV-4-1. Main Board
• 35

  IV-4-2. DIP Switch Settings at Our Factory
• 36

  IV-4-3. Optional RAM Board

44

Theory of Operations

• 46

  VI-1. General
• 48

  VI-2. Main P.C.B
  • 51

    VI-2-1. Cpu
  • 53

    VI-2-2. RESET Signal and Clock Generator Circuit
  • 55

    VI-2-3. NMI and INT Control Circuit
  • 56

    VI-2-4. Memory Map
  • 57

    VI-2-5. Memory
  • 60

    VI-2-6. 110 Map and 1/0 Address Decoding Circuit
  • 63

    VI-2-7. System Bus
  • 66

    VI-2-8. Dmac
  • 69

    VI-2-9. Printer Interface Circuit
  • 71

    VI-2-10. RS-232C Interface Circuit
  • 73

    VI-2-11. Timer and Speaker Driver Circuit
  • 74

    VI-2-12. Keyboard Interface
  • 76

    VI-2-13. Ppi
  • 78

    VI-2-14. FDD Interface Circuit
• 83

  VI-3. Keyboard Unit
• 89

  VI-4. Display Adapter Boards
  • 89

    VI-4-1. Pin Description of the 68B45
  • 90

    VI-4-2. Monochrome Display Adapter Board
  • 103

    VI-4-3. Color Display Adapter Board
• 117

  VI-5. Power Supply Unit

119

Part VII. Diagnostic Programs

133

Part VIII Troubleshooting

147

DIAGRAMS and PARTS Llst

177

Appendix

• 179

  X-1. Connector Pin Assignment
  • 179

    X-1-1. RS-232C Interface
  • 180

    X-1-2. Monochrome Monitor Interface
  • 180

    X-1-3. Color Monitor Interface
  • 181

    Printer Interface
  • 182

    X-1-6. Option Slot Interface
• 185

  X-2. Character Code Table