VAX 11/785 Field Maintenance Print Set

This document is a "Field Maintenance Print Set" for the Digital Equipment Corporation 11785-A CPU Cabinet, covering its AA, AC, AD, AE, and AJ variations.

The primary purpose of the document is to provide comprehensive configuration and maintenance information, crucial for adhering to DEC standards and maintaining FCC Class A compliance, particularly concerning radio frequency energy emission.

Key contents of the document include:

• Configuration Control Information: Detailed rules and layouts for configuring system expansion, including console terminal connections, and the proper placement of UNIBUS and SBI expander cabinets. It lists allowable expansion options, specifying their mounting locations and required bulkhead connections.
• Parts Lists: Extensive inventories of components, assemblies, cables, and labels for the 11785-A unit and its sub-assemblies (e.g., VAX Cab & Mech Assy, SBI End Terminators, Power Regulators). A "Shiplist" is also included, detailing other related documentation and manuals.
• Interconnect Diagrams: Detailed schematics illustrating the power interconnects, backplane DC interconnects, and SBI interconnects, providing specific cable connections and pin designations essential for electrical setup and troubleshooting.
• Unit Assembly Diagrams: Visual layouts showing the physical arrangement of components within the cabinet, such as power supplies, blowers, and various panels.
• Regulatory Compliance: A prominent notice emphasizes that strict adherence to the configuration rules outlined in the document is mandatory to ensure FCC Class A status, given the equipment's radio frequency energy generation and emission.

The document also contains standard disclaimers, noting that the material is for information purposes only, subject to change, and proprietary to Digital Equipment Corporation, making it essential for field service personnel and anyone involved in the setup or maintenance of the 11785-A CPU Cabinet.