PDP-15 Systems TC59 Magnetic Tape Transport Control Maintenance Manual Volume 2

This document, Volume 2 of the Maintenance Manual for PDP-15 Systems' TC59 Magnetic Tape Transport Control, is a comprehensive technical reference primarily composed of detailed engineering drawings, parts lists, and schematic diagrams. It covers both the TC59 (Magnetic Tape Transport Control) and TC50 (Magnetic Tape Control) systems.

The manual includes:

• Drawing Number Indexes and Master Drawing Lists: Categorizing all included diagrams and their descriptions, from high-level system components to individual logic gates.
• Parts Lists: Detailing the components required for various assemblies, including the Wired Assembly (TC59), power supplies, and control panels.
• Logic and Flow Diagrams: Providing in-depth views of data flow, I/O control, command processing, and general motion timing for both TC59 and TC50. These include diagrams for the DB Register, Device Selector, TC59 Buss, and Module Utilization.
• Detailed Schematics: Presenting circuit diagrams for power supplies (e.g., Power Supply 728), control panels (e.g., One Step Power Control Panel 834, Marginal Check Panel, Indicator Panel), and various digital logic modules such as indicator brackets, diode gates, binary-to-octal decoders, flip-flops (single, dual, triple), pulse amplifiers, clamped loads, and I/O bus multiplexer and receiver circuits.
• Timing Diagrams: Illustrating the precise sequences and delays of operations within the magnetic tape control systems.

Overall, this document serves as an essential resource for understanding the intricate hardware architecture, operation, and maintenance of the PDP-15 magnetic tape control systems.