Shugart SA 400 minifloppy Manuals

Manuals and User Guides for Shugart SA 400 minifloppy. We have 3 Shugart SA 400 minifloppy manuals available for free PDF download: Service Manual, Manual

Shugart SA 400 minifloppy Service Manual (77 pages)

Diskette Storage Drive

Brand: Shugart | Category: Floppy Disk Drive | Size: 4 MB

Theory of Operation
4
Table of Contents
5
General Operations
7
Head Positioning
7
Diskette Spindle Drive
8
Read/Write Head
8
Recording Format
8
Functional Diagram
8
Bit Cell
9
Byte
9
Tracks
10
Track Format
10
Hard Sector Recording Format
10
Soft Sector Recording Format
10
Drive Motor Control
12
Drive Selection
13
Head Load
13
Single Drive System
13
Multiple Drive System
13
Index Detector
14
Index Detector Logic
14
Index Timing Diagram
14
Track Zero Indication
15
Track Accessing
16
Stepper Motor
16
Stepper Control
16
Stepout
16
Stepper Control Function Diagram
17
Step Timing Diagram
18
Step in Logic
18
Read-Write Operations
19
Basic Read/Write Head
20
Recorded Bit
20
Reading a Bit
21
1F and 2F Recording Flux and Pulse Relationship
21
Write Circuit Operation
23
Write Circuit Functional Diagram
23
Read Circuit Operation
24
Read Circuit Functional Diagram
24
Write Protect
25
Write Protect Functional Diagram
25
Interface
26
J1/P1 Connector
26
D.C. Power
26
Input Output Lines
26
Interface Connections
27
Interface Signal Driver/Receiver
27
Maintenance
28
Maintenance Features
31
Alignment Diskette
31
Exerciser
31
Special Tools
31
Diagnostic Techniques
32
"Soft Error" Detection and Correction
32
Write Error
32
Rear Error
32
Preventive Maintenance
33
Removals and Adjustments
33
Test Points
33
Face Plate
33
Drive Motor Assembly
34
Stepper Motor and Acuator
34
Head and Carriage Assembly
34
Spindle Hub and Pulley/Assembly
34
Clamp Hub Removal
35
Hub Frame Assembly Removal
35
Write Protect Switch Removal
35
Index Detector Assembly Removal
35
Index LED Removal
36
Track Zero Switch Removal
36
Head Amplitude Check
36
Motor Speed Adjustment
36
Read/Write Head Load Button Adjustment
37
Track Zero Switch Adjustment
37
Carriage Limiter
37
Index/Sector Timing Adjustment
38
Index Detector Adjustment
38
Service Position
38
Head/Redial Alignment
39
Index Timing
39
Write Protect Switch Adjustment
40
Read/Write Head Cleaning
40
Head Load Bail Adjustment
40
Physical Locations
41
PCB Component Locations
45
Drive PCB Component Locations
46
Logic Manual
51
Drive PCB Logic Diagram
52
Schematics
57
Illustrate Parts
67
Description
69
General
69
Indented Level
69
Parts Replacement
69

Shugart SA 400 minifloppy Manual (48 pages)

Diskette storage drive

Brand: Shugart | Category: Floppy Disk Drive | Size: 3 MB

Table of Contents
4
1 Introduction

8
2 Functional Characteristics

10
- General Operation
  10
- SA400 Functional Diagram
  10
- 2:2 Read/Write and Control Electronics
  11
- Drive Mechanism
  11
- R/W Head Positioning Mechanism
  11
- Read/Write Head
  11
- Recording Format
  11
3 Functional Operations

12
- Power Sequencing
  12
- Drive Selection
  12
- Motor on
  12
- Track Accessing
  12
- Track Access Timing
  13
- Read Initiate Timing
  13
- Step out
  14
- Step in
  14
- Read Operation
  14
- Write Operation
  14
- Sequence of Events
  14
- Multiplex Option
  14
- Drive Selection
  14
- Read Signal Timing
  15
- Write Initiate Timing
  15
- Write Data Timing
  15
- General Control and Data Timing Requirements
  16
4 Electrical Interface

18
- Signal Interface
  18
- Input Lines
  18
- Drive Select
  18
- Interface Connections
  19
- Input Line Terminations
  20
- Motor on
  20
- Direction Select
  20
- Step
  20
- Write Gate
  20
- Write Data (FM)
  21
- Output Lines
  21
- Track
  21
- Index/Sector
  21
- Interface Signal Driver/Receiver
  21
- Index Sector Timing Soft Sectored (SA104 Media)
  21
- Index Sector Timing Hard Sectored
  21
- Read Data
  22
- J 1 Connector Dimensions
  24
- J2 Connector
  25
- Interface Connectors-Physical Locations
  25
- SA400 Drive Dimensions
  27
- Data Pattern
  28
- Bit Cell
  28
- Byte
  29
- Data Bytes
  29
- Track Format-18 Records/Track
  30
- ID Address Mark
  31
- Data Address Mark
  32
- Deleted Data Address Mark
  32
- Soft Sectored Formats
  33
- Hard Sectored Formats
  33
- Data Separator Functional Diagram
  35
- Data Separator Timing Diagram
  35
- True Data Separator
  37
- Register Controls and am Detection
  38
- Data and Clock Registers
  39
- AM Timing
  40
- CR C Generation
  42
- Index/Sector Separator and Ready Circuit
  43
- Index/Sector Timing
  44
- SA400 with SA4400 Controler
  45
- Load Ing SA400
  46
- SA 104/1 05 Write Protect
  47

Shugart SA 400 minifloppy Service Manual (76 pages)

Diskette Storage Drive

Brand: Shugart | Category: Storage | Size: 2 MB

Table of Contents
5
Theory of Operations
7
- General Operations
  7
- Head Positioning
  7
- Diskette Spindle Drive
  8
- Head/Write Head
  8
- Hecording Format
  8
Data Pattern
8
- Bit Cell
  9
- Byte
  9
Functional Diagram
8
Data Bytes
9
- Tracks
  10
- Track Format
  10
- Sector Recording Format
  10
- Soft Sector Recording Format
  10
Drive Motor Control
12
Motor Control Functional Diagram
12
Drive Selection
13
- Head Load
  13
- Singlle Drive System
  13
- Mu Itiple Drive System
  13
Index Detector
14
Index Detector Logic
14
- Track Zero Indication
  15
Track 00 Indication Diagram
15
Track 00 Timing Diagram
15
- Track Accessing
  16
  - Stepper Motor
    16
  - Stepper Control
    16
  - Stepout
    16
  - Step in Mode
    16
Step out Logic
16
- Read/Write Operations
  19
Bit Cell
20
Recorded Bit
20
Reading a Bit
21
- Read/Write Head
  22
- Write Circuit Operation
  23
Read Circuit Operation
24
11.0 Write Protect
25
12.0 Interface
26
- 12. . 1 J1/P1 Connector
  26
- Power
  26
- Input/Output Lines
  26
SA400 Interface Connections
27
Step in Logic
30

Shugart Categories

Storage Floppy Disk Drive Computer Hardware DC Drives Controller

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Shugart SA 400 minifloppy Manuals

Shugart SA 400 minifloppy Service Manual (77 pages)

Table of Contents

Shugart SA 400 minifloppy Manual (48 pages)

Table of Contents

1 Introduction

2 Functional Characteristics

3 Functional Operations

4 Electrical Interface

Shugart SA 400 minifloppy Service Manual (76 pages)

Table of Contents

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