IBM 6580 User Manual

Character Structure 4-5
Operating Voltages 4-5
Internal Distribution Cable 4-7
Input Signals 4-8
Large Display Service Information 4-9
CRT Anode Discharge Procedure 4-10
Service Aids 4-11
Display Indicators 4-12
Large Display Adjustments 4-13
Image Size Adjustment 4-13
Image Centering Adjustment 4-14
Large Display Removals/Replacements 4-15
Large Display Module Removal 4-15
Rear Cover Removal 4-16
Display Analog Card Removal 4-17
Low Voltage Power Supply Removal 4-18
High Voltage Power Supply Removal 4-19
Mainframe Assembly and Front Cover Removal 4-20
Chapter 5. Keyboard 5-'
Locator 5-1
Keyboard Operational Theory 5-2
Type A Key Modules 5-4
Keyboard Electronics 5-5
Basic Assurance Test (BAT) 5-8
Character Buffer 5-8
Keyboard Identification (ID) 5-8
Key Position 5-9
Code Key 5-10
Enter Key 5-10
Keyboard Speakers 5-10
Keyboard Arrangement Option 5-11
ASCII Code Set 5-13
Keyboard Logic Card 5-14
Keyboard Service Aids 5-15
Tools and Equipment 5-15
Cleaning Procedures 5-15
Adjustments 5-16
Shift Lock Brake Adjustment (Type A only) 5-16
Removals/Replacements 5-17
Keyboard Cover (Type A & B) 5-17
Pad Card (Type A only) 5-18
Key Module (Type A only) 5-19
Fly Plate Replacement (Type A only) 5-20
Shift-Lock Mechanism (Type A only) 5-21
Spacebar Mechanism (Type A only) 5-21
Chapter 6. System Electronics/Power Supply 6-'
Locator 6-1
System Electronics/Power Supply Theory 6-2
System Card 6-3
System Bus 6-3
Microprocessor 6-4
Read Only Storage (ROS) 6-5
vi IBM Displaywriter Product Support Manual

IBM 6580 Specifications

General

Brand	IBM
Model	6580
Category	Desktop
Language	English