Control Data BR3B8 Manuals

Manuals and User Guides for Control Data BR3B8. We have 1 Control Data BR3B8 manual available for free PDF download: Reference Manual

Control Data BR3B8 Reference Manual

Control Data BR3B8 Reference Manual (107 pages)

Disk Storage Unit

Brand: Control Data | Category: Storage | Size: 4 MB

Table of Contents

Table of Contents
6
1 General Description

8
- Introduction
  10
- Drive Specifications
  10
- Assembly Locations
  12
  - Top Cover Assembly
    12
- Spindle Assembly
  12
  - Deck Assembly
    13
  - AC Power Supply
    13
  - Logic Chassis
    13
- Equipment Identification
  13
2 Operation

16
- Controls and Indicators
  18
- Controls and Indicators
  19
- Operating Instructions
  21
  - Power Application
    21
  - Disk Pack Handling
    21
  - Disk Pack Installation
    21
  - Disk Pack Removal
    22
3 Theory Of' Operation

24
- Introduction
  26
- Assemblies
  26
  - Power Supply
    26
    
    AC IDC Distribution
    26
- Power Distribution
  28
  - Overtemperature Monitoring
    31
  - Power on Sequence
    31
  - Emergency Retract and Data Protection
    32
  - Loss of AC Power
    32
  - Control Interlock Opening
    33
- Power off Timing
  33
  - Loss of Speed
    34
  - Power off Sequence
    35
  - Logic Chassis
    35
- Power off Sequence
  36
  - Deck Assembly
    37
    
    Drive Motor Assembly
    37
    
    Hysteresis Brake Assembly
    37
    
    Spindle Assembly
    37
    
    Actuator
    38
- Deck Assembly
  38
- Actuator Assembly Elements
  40
- Head Loading
  41
- Head/Arm Assembly Motion
  42
  - Transducers
    43
  - Disk Cleaner Assembly
    44
- Blower System
  44
- Disk Pack
  44
- Logic Functions
  45
- Basic Interface Description
  45
- Blower System
  45
- Function Control Code Definitions
  48
- Function Control Timing
  52
- Unit Selection
  54
  - Seek Operations
    54
- Status Request Timing
  54
- Servo Circuit
  55
- Servo Circuit Functions
  56
- Servo Circuit Simplified Schematic
  58
  - Basic Seek Operation
    59
- Servo Circuit Simplified Signals
  60
  - Short Seeks
    62
- Track Servo Circuit
  62
  - Basic Description
    62
  - Circuit Description
    64
- Track Servo Circuit Simplified
  65
- Track Servo Circuit Simplified
  66
  - End of Travel Detection
    67
  - Cylinder Pulse Generation
    68
- Cylinder Pulses Generation
  68
- First Seek
  69
- First Seek Flow Chart
  70
- Direct (Forward/Reverse) Seek
  73
  - Direct Seek Flow Chart
    75
- Direct Seek Timing Diagram
  76
  - Positioner Motion
    77
- Machine Clock Circuit
  80
  - Clock Generation
    80
  - Index Detection Circuit
    82
- Sector Circuit
  83
- Basic Read/Write Principles
  85
  - Introduction
    85
  - Writing Data
    85
  - Reading Data
    85
  - Track Format
    85
  - Writing Data
    86
- Reading Data
  86
  - Principles of MFM Recording
    87
- Read/Write Operations
  88
  - Introduction
    88
  - Write Data Processing
    90
  - Write Data Serializer
    90
  - Write Serializer Timing
    92
- Peak Shift
  92
- Write Compensation Circuit
  95
- AGC Amplifier Stage (Simplified Logic)
  95
- Data Latch Circuit
  97
- Phase Lock Oscillator Circuit
  99
- Data Separator Circuit
  101

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