MP01385 DECSA Communications Server Engineering Drawings Vol1 Feb83

This document is a Field Maintenance Print Set for the DECSA system, published by Digital Equipment Corporation, with a primary date of February 11, 1983, though many included drawings are dated from various months and years up to 1986.

The set provides a comprehensive collection of engineering drawings and specifications for the maintenance of the DECSA system and its various components.

Key components and subsystems covered include:

• DECSA System Core: Communication Servers (including variations like DECSA-AA, BA, CA, DA, EA, FA), Power Supply Assemblies, AC Input Assemblies, Backplane Assemblies, and associated Drill & Etch Boards.
• Interconnects & Peripherals: UNA Bulkhead Cable Assemblies, H7211 Communication Regulators, H7200 Major Boards, Fan Plate Assemblies, various power and fan harnesses, and a range of cable modems (Extension, Null, Asynchronous, V.35).
• Processor & Control Units: KDF11-UA (16-Bit F11 Unibus Processor), Protocol Assist Microprocessor (M3110), and Protocol Assist BM Scanner (M3111).
• Console & Serial Communication: Console/Boot Terminator (M3112), SYNC/ASYNC Serial Line Units (M3100, M3190), V.35 Line Cards (M3101), and Dual RS-232 Line Cards (M3102).
• Memory Modules: MDECS-AA Memory (M8743).

The document also contains a drawing directory, parts lists, assembly instructions, wiring diagrams, etch cut drawings, timing diagrams, state diagrams, and hardware register operation cycles.

Important disclaimers and intellectual property notes state: The material is "for information purposes only" and "subject to change without notice." Digital Equipment Corporation assumes "no responsibility for any errors." The document is proprietary and "shall not be reproduced or copied or used in whole or in part as the basis for the manufacture or sale of items without written permission."