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3279 3B
IBM 3279 3B Manuals
Manuals and User Guides for IBM 3279 3B. We have
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IBM 3279 3B manuals available for free PDF download: Maintenance Information, Maintenance Manual
IBM 3279 3B Maintenance Information (206 pages)
Color Display Station
Brand:
IBM
| Category:
Touch terminals
| Size: 7.23 MB
Table of Contents
Table of Contents
4
Chapter 1. General Description and Locations
12
Introduction
12
Indicators
13
Display Unit
13
Electrical Grounding
13
Equipment Lightning Protection
13
Video 01)Tput Facility
13
Keyboards
20
Scan Codes
20
Break Codes
20
Keyboard Cable
20
System Upshift
20
Keyboard Type Identification
20
Keyboard Lock
20
Numeric Lock (Feature)
20
Tools and Test Equipment
20
General Logic Probe
20
Chapter 2. Maintenance Aids
22
Maintenance Plan
22
General Failure Index
22
Maps
22
Intensity Override
22
S Test Modes (Offline)
22
Test Mode 1: Pattern
24
Test Mode 2: Keyboard
24
Test Mode 3: Commands
24
Online Tests
26
Running Online Tests
27
Test
28
Test 1: Error Log
30
Test 3: Status Summary 2-\0
31
S Test 4: Error Log Reset 2-\0
31
Test 7: Operator Convergence Utility
31
Test 8: 7-Color and Programmed Symbols (PS)
31
Error Codes
32
Jumper Positions
34
Chapter 3. Functional Components
36
Power Supply
37
Analog Card
37
Amplifier Card and Inputs
39
Convergence Circuits
41
Color Controls
41
Video Card
41
3279 MIM
42
Convergence Logic Card (Location B2)
43
Line Control Card (Location C2)
44
Base Logic Card (Location 02)
44
Apl/Extended Character Set (ECS) Card (Location E2)
46
Programmed Symbols (PS) Card (Feature) (Location F2)
47
Selector Light Pen (LP) Card (Feature) (Location G4)
48
Magnetic Reader Control (MRC) Card (Feature) (Location G2)
48
Chapter 4. Removal and Replacement Procedures
50
General
50
Logic Gate
50
Rear Cover
50
Bezel
50
ON/OFF Switch
51
Brightness and Audible Alarm Volume Controls
51
Normal/Test, Base Color. and Oualcase/Monocase Switches
51
Indicator Leos
52
S Power Units
52
Fuse
52
Power Supply
52
Prime Power Box
52
Analog Card
53
Logic Cards
53
I Removal
53
Replacement
53
Connectors
54
Internal Coaxial Connection
54
Video Components
56
Amplifier Card
56
Video Card
56
CRT and Coil Assembly
56
EHT Bleed Assembly
58
S Degauss Coil
59
Logic. Board Planar Strips
59
Removal
59
Replacement 4-\0
59
Audible Alarm
60
I Keyboard Units
60
Keyboard from Display Station
60
Keyboard Top Cover
60
Keyboard Assembly from Base
60
Clicker Assembly
60
Keybutton
60
Key Modules
61
Spacebar
62
Logic Card Assembly
62
Chapter 5. Display Adjustments
64
Initial Checks
65
Coarse Adjustments
65
Coarse Color Balance
66
Coarse Raster Adjustment
66
Coarse Focus
66
Coarse Static Convergence
66
Coarse Color Purity
67
Fine Adjustments
67
Static Convergence
67
Purity
67
Dynamic Convergence (Online Test 7)
68
Focus Adjustments
68
Raster Controls
69
Color Balance
70
Repetition
71
Convergence Amplifier Gain Controls
71
Chapter 6. Support Information
72
Block Diagram
72
3279 Control Signals
73
Waveforms
73
Activation Sequence
76
Top Card Connector and Planar Strip Wiring
76
Grounding and Cables
89
Bezel Wiring
97
Keyboard Jumpers and Cables
99
Attachment Cabling
101
ECS and PS Card Layouts
103
Power Supplies
104
Display Attributes and Modified Data Tags
105
Extended Character Set Buffer
106
Appendix A. Indicators in Operator Information Area A-I
109
Abbreviations and Glossary G-I
190
Glossary
192
Cut Along Dotted Line
204
IBM 3279 Color Display Station Models 2A, 28, 3A and 38 Maintenance Information
204
Order No. SY33-0069-3
204
This Manual Is Part of a
204
Obligation to You
204
Your Comments will be
204
Possible Topics for Comments Are
204
Clarity Accuracy Completeness
204
What Is Your Occupation
204
Number of Latest Newsletter Associated with this Publication
204
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IBM 3279 3B Maintenance Manual (66 pages)
Color Display Terminal Maintenance Analysis Procedures
Brand:
IBM
| Category:
Computer Hardware
| Size: 3.33 MB
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