Facit 4431 Manuals

Manuals and User Guides for Facit 4431. We have 1 Facit 4431 manual available for free PDF download: Service Instruction

Facit 4431 Service Instruction

Facit 4431 Service Instruction (44 pages)

VIDEO TERMINAL

Brand: Facit | Category: Touch terminals | Size: 3.96 MB

Table of Contents

Table of Contents

2
- Power On/Performance Check
  3
- E C E I V
  3
- Power and Signal Wiring
  3
- I N S P E C T I 0 N
  3
- Installation
  4
- Initial Setting-Upi
  4
- Access to Main Logic Board in Display Unit
  5
- Access to Keyboard Pcb
  5
- Keyclick/Bell Volume Adjustment
  5
- Jumpers on the Main Logic Board
  6
- Facit 4431 Selection (W2)
  6
- National Keyboard Selection (W4,5,6)
  6
- Keyboard Pcb
  6
- Main Logic Board
  7
- Standard/Extended Character Generator (W3)
  7
- Production Test (W4)
  7
- Disable/Enable Save (W5)
  7
- Composite Video Output
  8
- General Features of Set-Up Mode
  8
- Features
  8
- Current Loop Interface
  8
- V.24/Rs-232-C Printer Interface
  8
- V.24/Rs-232-C Communication Interface
  8
- Set-Up Mode Summary
  9
- Microprocessor Control
  10
- Video Generator
  12
- Micro-Processor Control Uniti
  14
- Wait State Generation
  15
- Ear Om
  15
- Screen Attribute Latch
  15
- Program Memory Access
  15
- Display Refresh Memory
  15
- WRITING to the ASCII (Character) DISPLAY MEMORY
  16
- READING the ASCII ·(Character) DISPLAY MEMORY
  16
- WRITING/READING the ATTR (Attribute) DISPLAY RAM
  16
- Crt Controller (Crtc)
  16
- Dot Oscillator
  17
- Memory Share Signal
  17
- Non-Maskable Interrupt
  19
- Character Font
  20
- Smooth Scroll or Scrolling Window
  20
- Video Generator
  20
- Display Timing Generationi
  21
- Display Sequencing
  21
- Single Wide Characters
  22
- Double Wide Characters
  22
- Double High Characters
  22
- Effect of the Attribute Bits
  22
- Retrace Blanking
  23
- Brightness Control and Video Output I
  23
- M 0 N I T 0 R a N D P 0 W E R S U P P L y
  24
- Power Supply
  24
- Monitor
  24
- Baud Rate Clock Generation
  24
- General
  24
- Keyboard Communication
  24
- Dart Operations
  24
- Power Supply
  25
- Keyboard Fault Diagnosis
  25
- Subassembly Diagnosis
  25
- Power-Up Self-Test
  25
- Troubleshooting and Fault Isolation
  25
- E R V I C E
  25
- Troubleshooting by Symptom
  29
- Appendix 2
  31
- 4431 Cpu Circuit Diagram 1(5)
  31
- 4431 Mem Circuit Diagram 2(5)
  32
- Appendix 3
  32
- 4431 Sg Circuit Diagram 3(5)
  33
- Appendix 4
  33
- 4431 Vg Circuit Diagram 4(5)
  34
- Appendix 5 4431 I/0 Circuit Diagram 5(5)
  35
- Appendix 6
  35
- Appendix
  36
- 4431 Keyboard Schematic
  36
- Appendix 10
  39
- Appendix 10 4431 Monitor Printed Circuit Board
  39
Display Refresh Memory/Specifications

42
- Display Refresh Memory
  42
- Specifications
  42
- Input/Output Interfaces
  43

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