TU56 Rev AN Engineering Drawings Apr73

This document is a comprehensive set of engineering drawings for the Digital Equipment Corporation (DEC) TU56 DECtape transport.

It includes:

• Master Drawing Lists: Providing an index and overview of all included drawings and their revisions.
• Assembly Drawings: Detailing the mechanical layout and component placement for the TU56 unit and its various sub-assemblies.
• Parts Lists: Itemizing all components, quantities, and part numbers for different TU56 variations and modules.
• Wiring Diagrams: Illustrating the electrical connections within the transport, including motor wiring and inter-module wiring.
• Transport Logic Diagrams: Showing the functional logic and signal flow of the DECtape transport.
• Module Utilization Lists: Outlining which electronic modules are used in different TU56 configurations.

• Circuit Schematics: For specific electronic modules and functions, such as:

  • Clock Regulator (G859)
  • Relay (G851)
  • Manchester Reader/Writer (G888)
  • One Shot Delay (M302)
  • Dual Motor Voltage Control (G847)
  • Motor Driver/Control (G848)
  • Switch Control Panel

• Procedures: For skew checking, head shimming, checkout, and acceptance of the TU56 transport.

• Accessory Lists: Detailing optional components and kits.

The document covers various TU56 unit variations (e.g., TU56, TU56C, TU56-H, TU56-M, TU56-MR) and provides details necessary for manufacturing, assembly, maintenance, and understanding the operational aspects of the DECtape transport.