Tu55 Dectape 55 Instruction Manual

Summary

This manual provides technical information for the maintenance and operation of the Type TU55 DECtape Transport, a solid-state, bidirectional, magnetic-tape handling device manufactured by Digital Equipment Corporation.

Key sections of the document include:

• Introduction and Description: Details the physical and functional characteristics of the TU55, including its solid-state circuitry, tape deck mechanism, and electrical interface requirements.
• Theory of Operation: Explains the block diagram logic, command lines (GO, STOP, FORWARD, REVERSE), and the role of various FLIP CHIP logic modules in controlling tape motion and read/write head operation.
• Operation: Describes the dual-mode operation (local/manual vs. remote/programmed), control panel functions, and procedures for loading tape.
• Maintenance: Outlines preventive maintenance schedules, troubleshooting steps using an oscilloscope or voltmeter, and procedures for adjustments such as tape tension and head-skew checks.
• Engineering Drawings: Provides detailed schematics and logic symbol references for the hardware components, including motor controllers, amplifiers, and relay modules used within the system.

The manual is intended for maintenance personnel and emphasizes that while it covers operation, detailed programming and control system information should be sourced from the respective computer and DECtape control system handbooks.