TU56 DECtape Transport Maintenance Manual

Company:Digital Equipment Corporation
Part:DEC-00-HRTC-D
Date:1972-07
Keywords:

Table of Contents

  • Chapter 1 General Information
    • 1.1 Introduction
    • 1.2 Specifications
    • 1.3 Options
    • 1.4 Major Assemblies and Systems
      • 1.4.1 Controls and Indicators
      • 1.4.2 Tape Motion System
      • 1.4.3 Power Supply
  • Chapter 2 Installation
    • 2.1 Unpacking and Inspection
    • 2.2 Mechanical Installation
      • 2.2.1 Mounting Support Plate Bracket and Spacer Block Installation
      • 2.2.2 Spacer Support Bracket Installation
      • 2.2.3 Transport Installation
    • 2.3 Electrical Installation
    • 2.4 Operation
      • 2.4.1 Tape Loading and Unloading
      • 2.4.2 On-Line Operating Procedures
  • Chapter 3 Theory of Operation
    • 3.1 Interface
      • 3.1.1 Input Interface Lines -- Command Cable -- A06/A07
        • 3.1.1.1 Select 0-7
        • 3.1.1.2 CON STOP
        • 3.1.1.3 CON GO
        • 3.1.1.4 CON REV REM
        • 3.1.1.5 CON FWD REM
        • 3.1.1.6 CON ALL HALT
        • 3.1.1.7 CON PWR UP DLY
      • 3.1.2 Output Interface Lines -- Command Cable -- A06/A07
        • 3.1.2.1 Select Echo
        • 3.1.2.2 Write Echo
      • 3.1.3 Bi-Directional Interface Lines -- Information Cable -- AB10/AB11
        • 3.1.3.1 Timing Track (TT)
        • 3.1.3.2 Mark Track (MT)
        • 3.1.3.3 Data Tracks (D0-D2)
    • 3.2 Functional Information
      • 3.2.1 Read/Write Head
      • 3.2.2 DECtape Format
    • 3.3 Local (off-line) Operation
      • 3.3.1 Forward Tape Motion
      • 3.3.2 Hold Tape Motion
      • 3.3.3 Reverse Tape Motion
    • 3.4 Remote (on-line) Operation
      • 3.4.1 Tape Transport Addressing
      • 3.4.2 Error Checks
        • 3.4.2.1 Select Echo
        • 3.4.2.2 Write Echo
      • 3.4.3 Tape Motion Control
      • 3.4.4 Write Operation
      • 3.4.5 Read Operation
    • 3.5 Module Description
      • 3.5.1 G847 Dual Motor Voltage Control
      • 3.5.2 G848 Motor Control Module
      • 3.5.3 G859 Clock Regulator Module
      • 3.5.4 G888 Manchester Reader/Writer Module
  • Chapter 4 Maintenance
    • 4.1 Recommended Tools and Test Equipment
    • 4.2 Preventive Maintenance
      • 4.2.1 Weekly PM Procedure
      • 4.2.2 Monthly PM Procedure
      • 4.2.3 Tape Care and Cleaning
    • 4.3 Corrective Maintenance
      • 4.3.1 Control Panel Lamp Replacement
      • 4.3.2 Reel Motor
        • 4.3.2.1 Motor Removal
        • 4.3.2.2 Motor Replacement
        • 4.3.2.3 Reel Hub Clearance Adjustment
        • 4.3.2.4 Reel Motor Electronic Brake Adjustment
        • 4.3.2.5 40 Hz Oscillator Adjustment
      • 4.3.3 Read/Write Head
        • 4.3.3.1 Head Removal
        • 4.3.3.2 Head Replacement
        • 4.3.3.3 Head Output Check
        • 4.3.3.4 Head Skew Check and Adjustment
        • 4.3.3.5 Write Enable Circuit Check
    • 4.4 Troubleshooting
      • 4.4.1 Initial Checks
      • 4.4.2 Signal Source and Termination Tests
    • 4.5 Recommended Spare Parts
  • Appendix A Reference Drawings

Copies

Address: http://www.computer.museum.uq.edu.au/pdf/DEC-00-HRTC-D%20TU56%20DECtape%20Transport%20Maintenance%20Manual.pdf
Site: Wilber Williams' Computer Museum
Format: PDF
Size: 7689373 bytes (7.3 MiB)
MD5: e685b989e2df4c0e62abcc813b94f0d4
Mirrors:
 
Address: http://bitsavers.org/pdf/dec/dectape/DEC-00-HRTC-D_TU56_Jul72.pdf
Site: Al Kossow's Bitsavers
Format: PDF
Size: 4584143 bytes (4.4 MiB)
MD5: ae60f0867c8d3639d3ff4719a8124137
Mirrors:
 
Address: http://bitsavers.org/pdf/dec/dectape/DEC-00-HRTC-D_TU56maint_73.pdf
Site: Al Kossow's Bitsavers
Format: PDF
Size: 4929595 bytes (4.7 MiB)
MD5: 8b2256644f0552975c5aa83220763b58
Notes: Second printing, 1973-01, corrects one missing graphic
Mirrors: