VK100 Field Maintenance Print Set

This document is a comprehensive "Field Maintenance Print Set" for the Digital Equipment Corporation VK100 series, specifically covering the VK100-AA and VK100-AB unit variations. Published in 1981, it provides detailed technical information essential for the maintenance of the VK100 unit.

The set includes:

• Table of Contents: An organized list of assemblies covered, such as the VK190 Unit Assembly, Key Array Assembly, Logic Board Assembly, Power Supply Board/Assembly, and a VK100 Shipping List.
• Assembly Drawings: Exploded views of the VK100 unit, illustrating the physical arrangement and interconnection of its main components, including the keyboard, power supply, and logic board. It also provides external views and details on switch settings (e.g., baud rate, character frequency).
• Parts Lists: Extensive lists detailing components for various assemblies, including the VK100 Unit, Keyboard Module, Logic Module, and Power Supply. These lists specify part numbers, descriptions, and quantities.
• Schematic Diagrams: Detailed circuit diagrams for the Keyboard Module, multiple sections of the Logic Board (Processor 1, 2, 3, Vector Generator 1, 2, Display Memory 1, 2, DAC & Communication 1, 2), illustrating the electronic interconnections, integrated circuits (ICs), and other components within each module.
• Power Supply Assembly Details: Exploded views and schematic diagrams specifically for the power supply unit, including AC wiring and fan wiring configurations.

Overall, the document serves as a vital technical resource for personnel involved in the diagnosis, repair, and maintenance of the VK100 unit.