Digital Equipment TK50 Manuals

Digital Equipment TK50 Manuals

Manuals and User Guides for Digital Equipment TK50. We have 1 Digital Equipment TK50 manual available for free PDF download: Technical Manual

Digital Equipment TK50 Technical Manual

Digital Equipment TK50 Technical Manual (120 pages)

Tape Drive Subsystem

Brand: Digital Equipment | Category: Storage | Size: 4 MB

Table of Contents

Table of Contents
4
Chapter 1 Introduction and Specifications

6
Chapter 2 Drive Unit Theory of Operation

14
- General
  14
- Unit Designations
  14
- Drive Unit Variations
  14
- M7546 Controller
  15
- Cabling
  16
- Power
  17
- Physical Description
  17
Appendix A Tqkso Detailed Block Diagram, Tkso Exploded View

17
Appendix B Tkso Subsystem Error Codesand Status

17
- Desktop TK50
  17
- Drive Board
  18
- Block Diagram: Drive Board
  18
- Tape Transport
  19
- Controls and Indicators
  19
  - TK50 Tape Drive Transport
    19
- Load Procedures
  20
  - TK50 Front View
    20
- Unload Procedures
  21
- Lights
  22
  - States of Lights
    22
- Drive Board Description
  23
  - Write Data Chain
    23
- Write Erase
  24
- Write Head Selection
  24
  - TK50 Rear View
    24
- DC Low Circuit
  25
  - Volt Path
    25
  - Low Voltage Effect
    26
- DAC Reference Voltage Generation Circuit
  26
- Automatic Gain Control Circuit
  27
- Read Head Select Circuitry
  27
- Read Amplifier Circuit
  28
- Phase Lock Loop Circuit
  29
- Pump down Circuit
  29
- Pump up Circuit
  30
- Pump up and Pump down Signal Generation
  31
- Data Detection
  32
- Drive Commands and Status
  32
- Tape Hub
  33
- Link Arms
  33
- Tape Cartridge Insertion
  33
- Tape Load to Beginning of Tape
  33
- Tape Motion
  34
- Read/Write Head
  34
- Initialization: Writing and Reading CALTRACKS
  34
  - Wr I T I Ng da Ta
    35
  - Physical Tape Configuration
    36
  - Recording Direction
    37
- Differential Signal Pair Description
  39
- Signal Interface Timing
  39
- Serial Controller to Drive Communications
  42
- Basic Controller/Drive Communications Protocol
  42
- TK50 Commands
  44
  - TK50 Command S
    44
- TK50 Drive States
  45
  - Drive State Status
    45
    
    Non-Error Drive States
    45
    
    Done
    46
    
    Dropou T Sensed
    46
    
    Enable Write Gate
    46
    
    Load/Run State Change
    46
    
    Send Status Byte Bit Assignments
    46
    
    Track Boundary
    46
  - Drive Error Status
    47
Chapter 3 Drive Unit Repair

48
- General
  48
  - Failure to Load to Beginning of Tape
    48
  - Failure to Load Tape into Cartridge
    49
  - General Motor or Tachometer Failure
    49
  - Motor a Failure
    50
  - Motor B Failure
    50
  - Drive Lost Control of Tape or Bad Tachometer
    50
  - Excessive Drag in Tape Transport
    51
  - Failure to Stop Tape or Remain Stopped
    51
  - Cartridge Insert Error
    52
  - Cartridge Extract Error
    52
  - Move Errqr
    53
  - Deceleration Error
    53
  - Check Byte Error
    54
  - Unload Error
    54
  - 8155 Memory Error
    54
  - 8155 Timer Error
    55
  - Read Head 1 Error
    55
  - Read Head 2 Error
    55
  - Cartridge Insert/Extract Error
    56
  - BOT Sensed in Read/Write/Seek State
    57
  - TQK50 High Level Block Diagram
    74
  - Miscellaneous Control Register Bit Assignments
    81
  - Common Jumper Pack Settings
    88
  - Floating CSR Address Chart
    90
  - Unit Number Switch Pack Settings
    91
  - Revision Level Switch Pack
    91
  - Q-Bus Timing
    94
  - Read Data Timing
    99
  - Drive Error Sub-Code Values
    108
  - Controller Internal Status Byte
    109
  - Drive Error Code Byte
    109
  - Unrecoverable Drive Faults
    111
  - Controller Specific SA Error Codes
    113

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