TU81/TA81 Tape Subsystem

This manual provides detailed technical information for the TU81 and TA81 streaming tape units. It describes the hardware, functional components (including transport control, power supply, and pneumatic system), and the interfaces (TMSCP for TU81 and STI for TA81). The document also includes comprehensive maintenance and troubleshooting procedures, including diagnostic routines and fault/error code definitions for use by field service personnel.