Shugart 455 Manuals

Manuals and User Guides for Shugart 455. We have 1 Shugart 455 manual available for free PDF download: Reference Manual

Shugart 455 Reference Manual

Shugart 455 Reference Manual (86 pages)

Flexible Disk Storage Drive

Brand: Shugart | Category: Computer Hardware | Size: 6 MB

Table of Contents

Table of Contents
4
Table of Contents
5
List of Figures
7
List Oft Ables
9
Abbreviations/Mnemonics
10
Notice to Users
10
Section I Introduction
11
Purpose
11
General Description
11
Specifications Summary
11
- Performance Specifications
  11
- Functional Specifications
  12
- Physical Specifications
  12
- Reliability Specifications
  12
Functional Characteristics
13
- Read/Write and Control Electronics
  13
- Drive Mechanism
  13
- Positioning Mechanics
  13
- Read/Write Heads
  13
- Recording Formats
  14
Recommended Incoming Inspection
15
- Necessary Equipment
  15
- Procedure
  15
Functional Operations
16
- Power Sequencing
  16
- Drive Selection
  16
- Motor on
  16
- Track Accessihg
  16
- Step out
  16
- Side Selection
  17
- Read Operation
  17
- Write Operation
  19
- Sequence of Events
  19
Section II Electrical Interface
21
Introduction
21
Signal Interface
22
- Input Lines
  22
- Input Line Terminations
  23
- Drive Select 1-4
  23
- Motor on
  23
- Direction Select
  23
- Step
  23
- Write Gate
  23
- Write Data
  24
- Side Select
  24
- Output Lines
  24
- Track 00
  25
- Index/Sector
  25
- Read Data
  26
- Write Protect
  26
- Ready
  26
Power Interface
26
Frame Grounding
26
Section III Physical Interface
27
Introduction
27
- Jl/Pl Connector
  27
- J2/P2 Connector
  27
Frame Grounding
28
Section IV Physical Specifications
29
General
29
Mechanical Dimensions
29
Mounting
29
Error Recovery
31
Write Error
31
Read Error
31
Seek Error
31
Section VI Recording Format
33
General
33
Byte
33
Formats
34
- Soft-Sectored Recording Format
  34
- Track Layout
  35
- Hard-Sectored Recording Format
  35
Section VII Customer Installable Options
37
Introduction
37
Pluggable/Trace Options
37
Terminator Resistor Pack
37
Factory Trace Jumpers
37
Section VIII Theoryofoperation
41
Theory of Operation
41
Read/Write Operations
41
Read/Write Head
43
Write Circuit Operation
44
Read Circuit Operation
46
Drive Motor Control
46
Index Detector
47
Track Zero Indication
47
Trackaccessing
47
- Stepper Motor
  47
- Stepper Control
  47
Drive Select
48
Write Protect
48
Ready
49
Section X Maintenance
53
Maintenance and Maintenance Equipment
53
- Alignment Diskette
  53
- Exerciser PCB
  53
- Special Tools
  54
Diagnostic Techniques
54
- Introduction
  54
- Soft Error" Detection and Correction
  54
- Write Error
  54
- Read Error
  55
Troubleshooting
55
Adjustments
61
Removals and Replacements
69
Section XI Spare Parts
71
Routine Order Entry
71
Emergency Order Entry
71
Optional Sourcing
71
Section XII Illustrated Parts Catalog
73
Description
73
Quantity Per Assembly
73
Recommended Spare Parts Stocking Guide
73
Section XIII Schematic Diagrams
81
Section XIV Packaging
85
Packing for Reshipment
85
Appendix Aordering Information
86

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