Control Data Corporation BR8 SERIES Manuals

Manuals and User Guides for Control Data Corporation BR8 SERIES. We have 1 Control Data Corporation BR8 SERIES manual available for free PDF download: Hardware Maintenance Manual

Control Data Corporation BR8 SERIES Hardware Maintenance Manual

Control Data Corporation BR8 SERIES Hardware Maintenance Manual (100 pages)

Brand: Control Data Corporation | Category: Floppy Disk Drive | Size: 4.23 MB

Table of Contents

Table of Contents
5
I General Description
9
Introduction
9
Purpose and Use of Equipment
9
- Physical Description
  10
- Electrical Description
  10
- Performance Characteristics
  10
Operation
13
Introduction
13
Operating Instructions
13
- Flexible Diskette Loading
  13
- Flexible Diskette Removal
  13
Error Recovery
13
- Write Error
  13
- Read Error
  14
Diskette Installation
14
Diskette Handling Recommendations
14
Installation and Checkout
17
- Introduction
  17
- Unpacking
  17
Installation
17
Cabling and Connections
17
- Input-Output Cable
  17
- DC Power Connection
  18
- AC Power Connection
  18
Environment
18
Initial Checkout
18
- Operating Frequency
  19
AC Cable Assembly
19
Jv Theory of Operation
21
Introduction
21
General Description
21
Functional Description
23
- Control Logic
  23
Phase Sequence of Stepper Motor
24
- Write and Fault Logic
  26
- Read Logic
  26
- Disk Drive
  27
- Read/Write Head
  27
Control and Data Line Character1S.tics
27
- Logic Levels
  27
- Transmitter Characteristics
  27
- Line Receiver Characteristics
  27
- Control and Data Line Functions
  28
Schematics
31
Introduction
31
PWA Configurator
31
Assembly and Parts List
40
Maintenance
45
Introduction
45
Preventive Maintenance
45
Maintenance Tools
45
Head Cleaning
45
Troubleshooting
46
- DC Voltage and Signal Check
  46
Flowchart Reference
46
Head Load and Door Interlock Switch
47
Differential Read Signal for Entire Track
48
Differential Read Signal for Portion of Outer Track
48
Write Data, Write F/F Output, and Head Write Voltage for Outer Track
48
- Diskette Not Rotating
  49
  - Ready Signal Mis S Ing
    50
- Drive Not Responding to Commands
  51
- Index Pulse Missing
  52
  - Head Not Loading
    53
- Read;Write Head Not Stepping
  54
- NO ,Track "00" Indicator
  56
- Read Errors
  57
- Write Errors
  59
- Write Protect Inoperative
  61
Adjustment Procedures
62
- Carriage-Stop Adjustment
  62
Base and Chassis Support Assembly
63
Carriage-Stop Adjustment
64
- Burst to Index Check and Adjustment
  65
Write Splice Bit to Index Timing
66
Spindle and Cone
71
- Write Protect Assembly Adjustment
  72
- Track "00" Switch Adjustment
  72
Removal and Replacement Procedures
73
- Printed Circuit Board (PWA)
  73
- Actuator Assembly
  73
- Drive Motor Assembly
  75
- Head Load Pad Replacement
  75
- Solenoid Replacement and Tang Adjustment
  75
Head Load Pad Replacement Illustration
76
- Carriage Arid/Or Stepper Motor Replacement
  77
Frequeny Conversion
77
- Operating Frequencies Conversion Procedure
  77
Maintenance Aids
79
Introduction
79
PHYSICAL DESCRIPTION (Logic)
79
Use of Relative Level Indicators
79
Integrated Circuits
79
Integrated Circuit
80
Parts Data
81
- Introduction
  81
Illustrations
81
- Parts Lists
  81
Top Mechanical and Assembly Locator
81
- Top Mechanical Assembly (TMA)
  81
Replacement Parts
81
Parts List Instructions
91
Introduction
95
Upper Harness Assemblies
95
Lower Harness Assembly
95
Stepper Motor
95
Write Protect
95

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