User Manuals: Lear Siegler ADM 5 Video Display Terminal

Manuals and User Guides for Lear Siegler ADM 5 Video Display Terminal. We have 1 Lear Siegler ADM 5 Video Display Terminal manual available for free PDF download: Maintenance Manual

Lear Siegler ADM 5 Maintenance Manual

Lear Siegler ADM 5 Maintenance Manual (158 pages)

Dumb Terminal Video Display

Brand: Lear Siegler | Category: Touch terminals | Size: 9 MB

Table of Contents

Table of Contents
4
Installation
21
General
21
Special Safety Requirements
21
Unpacking and Initial Inspection
21
Site Requirements
21
Initial Preparation
22
Interface Information
24
Installing the Adm 5
30
Power Turn-On and Turn-Off
30
Care of the Adm 5
30
- Cleaning
  30
- Inspection
  30
Operation
33
General
33
Keyboard Operation
33
- Terminal Control Keys
  33
- Alphanumeric Keys
  36
- Special Character Keys
  36
- Operational Control Keys
  36
Cursor Control Operations
36
Data Transmission Control
39
- BREAK Key
  39
- TAB Key
  39
Programming Considerations
39
- CONTROL Key
  39
- ESC Key
  39
- PROG Key
  39
- HERE IS Key
  39
Data Editing Control Operations
39
Interface Control Operations
40
- Data Communication Ports
  40
- Request to Send Operation
  40
  - Secondary Channel Turnaround Operation
    40
  - Code Turnaround Operation
    40
Programming Considerations
41
- Remote CTRL Operation
  41
- Remote Load-Cursor Operation
  41
Gated Extension Port Operation
41
Video Attributes
41
Theory of Operation
43
General
43
Functional Description
43
- Display Generation
  43
- Display Refresh Operation
  43
- Monitor Video and Drive Circuits
  48
- Receiving and Storing Data
  48
- Cursor Generation
  48
- Keyboard Logic
  48
- Data Transmitter Logic
  48
- Interface Logic Control
  49
  - Code Turnaround Control
    49
  - Reverse Channel Control
    49
- CRT Display Monitor
  49
- Power Supplies
  49
Logic Description
51
- General Clear Circuit
  51
- Display Counters
  51
- Cursor Presentation Logic
  53
- Memory Address Logic
  55
- Refresh Memory and Character ROM Logic
  57
- Erase Logic
  58
- WRITE PULSE Logic
  58
- Keyboard Logic
  58
- Data Transmitter Logic
  61
- Monitor Drive Logic
  63
- Interface Control Logic
  65
- Code-Turnaround Control
  66
- Attribute Logic
  66
- Program Logic
  66
- Keyboard Lock Logic
  66
- Power Supplies
  66
- ADM 5 Answerback
  67
- ADM 5 Extension Port Current Loop (Option)
  67
Maintenance
71
Introduction
71
Preventive Maintenance
71
Corrective Mainteance
71
- Fault Isolation
  71
- Failure Analysis
  71
Removing and Replacing Monitor Crt
74
- Removing and Replacing CRT
  74
- Removing and Replacing Flyback Assembly
  74
Adjustments
74
Troubleshooting the Main Circuit Board
75
Removing and Replacing the Main Circuit Board
75
Removing and Replacing Key Switch Contacts
75
Reference Drawings
79
Appendix
136
Control and Operators Codes
136

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