IBM 5475 Manuals

Manuals and User Guides for IBM 5475. We have 1 IBM 5475 manual available for free PDF download: Maintenance Manual

IBM 5475 Maintenance Manual

IBM 5475 Maintenance Manual (38 pages)

Elastic Diaphragm Encoded Keyboards

Brand: IBM | Category: Keyboard | Size: 2.39 MB

Table of Contents

Table of Contents
4
Part 1. Theory of Operation
6
Introduction
6
Functional Units
6
Principles of Operations
6
Key Mechanisms
6
Latch Key Operation
6
Momentary Key Operation
9
Typamatic Key Operation
9
Elastic Diaphragm Switch
11
Encode Circuit Board
12
Bail Drive Card
14
Shift Key
14
New Encode Circuit Board and Switch Assembly
15
Part 2. Maintenance
18
Encode Board
18
Checks, Adjustments, and Removals
18
Key Lever
18
Interposer
19
Restore Bail and Magnet Assembly
20
EDS Latch Spring and Actuator
21
New Encode Board and Switch Assembly
22
Ball Interlock Assembly
22
Spacebar Assembly
23
Shift Key Mechanism
23
Appendix A. 5475 Keyboard
24
Index
34

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