MP02421 DEPCA sch May87

This document is a "Field Maintenance Print Set" (Part Number MP-02421-01 Rev A1) for the DEPCA Unit Assembly, produced by Digital Equipment Corporation in 1987.

It serves as a comprehensive technical manual for understanding, maintaining, and potentially upgrading various configurations of the DEPCA unit (e.g., DEPCA-AA through DEPCA-KT).

The document includes:

• A detailed table of contents.
• Extensive parts lists for the DEPCA Unit Assembly and its specific modules.
• Printed circuit board layout diagrams with rework instructions (etch cuts, wire adds, part changes).
• Detailed schematics for various functional blocks, including bus connectors, address/data buffers, memory/IO decode, state machine, control/status registers, RAM, Ethernet controller, power conversion, mouse interface, and capacitor details.
• High-level block diagrams and state diagrams illustrating the unit's overall architecture and operational flow.

Important disclaimers state that the content is confidential, proprietary, for informational purposes only, subject to change, and cannot be reproduced without written permission from Digital Equipment Corporation.