Decmate II

This document serves as a comprehensive field maintenance print set for the Digital Equipment Corporation "Decmate II" computer system. It includes detailed technical specifications, wiring charts, circuit schematics, and complete parts lists required for the installation, maintenance, and repair of the system hardware.

The document is organized into several sections covering:

• System Assembly: Physical layout and interconnection diagrams for the Decmate II, including the BA25 small system unit enclosure.
• Parts Lists: Detailed breakdowns of components used across various assemblies (labeled with part numbers, quantities, and descriptions).
• Technical Schematics: Exhaustive electrical schematics for the system, covering memory arrays, clock timing, CRT controllers, communications interfaces, disk interface controls, and power distribution.
• Revision History: Records of engineering change orders (ECOs) and modifications to the hardware components and circuitry.

The print set is intended for service technicians and provides the necessary diagrams for troubleshooting, verifying component placement, and understanding the signal flow and logic architecture of the Decmate II hardware.