TU78 Magnetic Tape Transport Technical Manual Volume 2

This document, "TU78 Magnetic Tape Transport Technical Manual Volume 2," is a comprehensive technical guide for the TU78 magnetic tape transport. It provides detailed information and procedures across several key areas:

• General Description: Introduces the TU78, detailing its physical characteristics, functional overview, applicable documents, and mechanical and electrical specifications.
• Operation: Explains how to operate the tape transport, covering controls, indicators, and various operating procedures such as power management, autoload/manual loading, midreel loading, unloading, and rewinding.
• Installation: Provides instructions for site planning, unpacking, inspection, and the mechanical and electrical installation of both single and multiple transport configurations, including acceptance testing.
• Customer Care and Preventive Maintenance: Outlines customer responsibilities, best practices for magnetic tape care, and schedules for daily and semi-annual preventive maintenance, including cleaning procedures and information on ordering supplies.
• Theory of Operation: Delves into the internal workings of the TU78, describing its functional areas such as the capstan servo, reel servos, pneumatic subsystem, read/write subsystem, control logic, Multiple Interface Adaptor (MIA) interface, and power supply and distribution. It explains various operational modes and signal flow.
• Maintenance and Troubleshooting: Offers detailed procedures for functional alignments, adjustments, and troubleshooting, utilizing system diagnostics and microprogrammed routines. It covers diagnosing issues related to power supply, load cycles, pneumatic systems, reel servos, dynamic braking, and data paths, and provides step-by-step instructions for component removal and replacement.

The manual also includes a glossary, flowcharts, command/status register descriptions, interface wire lists, and numerous figures and tables to support the technical content.