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Touch terminals
3279 2A
Maintenance information
IBM 3279 2A Maintenance Information
Color display station
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
Chapter 1. General Description and Locations
Introduction
Indicators
Display Unit
Electrical Grounding
Equipment Lightning Protection
Video 01)Tput Facility
Keyboards
Scan Codes
Break Codes
Keyboard Cable
System Upshift
Keyboard Type Identification
Keyboard Lock
Numeric Lock (Feature)
Tools and Test Equipment
General Logic Probe
Chapter 2. Maintenance Aids
Maintenance Plan
General Failure Index
Maps
Intensity Override
S Test Modes (Offline)
Test Mode 1: Pattern
Test Mode 2: Keyboard
Test Mode 3: Commands
Online Tests
Running Online Tests
Test
Test 1: Error Log
Test 3: Status Summary 2-\0
S Test 4: Error Log Reset 2-\0
Test 7: Operator Convergence Utility
Test 8: 7-Color and Programmed Symbols (PS)
Error Codes
Jumper Positions
Chapter 3. Functional Components
Power Supply
Analog Card
Amplifier Card and Inputs
Convergence Circuits
Color Controls
Video Card
3279 MIM
Convergence Logic Card (Location B2)
Line Control Card (Location C2)
Base Logic Card (Location 02)
Apl/Extended Character Set (ECS) Card (Location E2)
Programmed Symbols (PS) Card (Feature) (Location F2)
Selector Light Pen (LP) Card (Feature) (Location G4)
Magnetic Reader Control (MRC) Card (Feature) (Location G2)
Chapter 4. Removal and Replacement Procedures
General
Logic Gate
Rear Cover
Bezel
ON/OFF Switch
Brightness and Audible Alarm Volume Controls
Normal/Test, Base Color. and Oualcase/Monocase Switches
Indicator Leos
S Power Units
Fuse
Power Supply
Prime Power Box
Analog Card
Logic Cards
I Removal
Replacement
Connectors
Internal Coaxial Connection
Video Components
Amplifier Card
Video Card
CRT and Coil Assembly
EHT Bleed Assembly
S Degauss Coil
Logic. Board Planar Strips
Removal
Replacement 4-\0
Audible Alarm
I Keyboard Units
Keyboard from Display Station
Keyboard Top Cover
Keyboard Assembly from Base
Clicker Assembly
Keybutton
Key Modules
Spacebar
Logic Card Assembly
Chapter 5. Display Adjustments
Initial Checks
Coarse Adjustments
Coarse Color Balance
Coarse Raster Adjustment
Coarse Focus
Coarse Static Convergence
Coarse Color Purity
Fine Adjustments
Static Convergence
Purity
Dynamic Convergence (Online Test 7)
Focus Adjustments
Raster Controls
Color Balance
Repetition
Convergence Amplifier Gain Controls
Chapter 6. Support Information
Block Diagram
3279 Control Signals
Waveforms
Activation Sequence
Top Card Connector and Planar Strip Wiring
Grounding and Cables
Bezel Wiring
Keyboard Jumpers and Cables
Attachment Cabling
ECS and PS Card Layouts
Power Supplies
Display Attributes and Modified Data Tags
Extended Character Set Buffer
Appendix A. Indicators in Operator Information Area A-I
Abbreviations and Glossary G-I
Glossary
Cut Along Dotted Line
IBM 3279 Color Display Station Models 2A, 28, 3A and 38 Maintenance Information
Order No. SY33-0069-3
This Manual Is Part of a
Obligation to You
Your Comments will be
Possible Topics for Comments Are
Clarity Accuracy Completeness
What Is Your Occupation
Number of Latest Newsletter Associated with this Publication
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Color Display Station
Models
2A, 28, 3A,
and 38
Maintenance Infonnation
SY33-0069-3
(Part 1)
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This manual is also suitable for:
3279 3b
3279 2b
3279 3a
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