HSC90/60 IPB

This document is an Illustrated Parts Breakdown (IPB) for the Digital Equipment Corporation (DEC) HSC90/60 Storage Controllers, published in 1991.

Its primary purpose is to help users identify specific parts and their locations within these hardware products. The manual is structured as follows:

1. Introduction and Usage Guide: Explains what an IPB is, how to use its figures and parts lists, and the meaning of various data fields for each part (e.g., description, DEC/Vendor part number, ECO cut-in details, usage codes). It also includes a revision history.
2. Visual Breakdowns (Figures): Contains numerous exploded diagrams and general views of the HSC90 and HSC60 controllers. These figures progressively break down the main unit into major assemblies (e.g., mechanical top, cabinet/shield, main cabinet, doors, OCP, power supplies, floppy drive, ducts, frame) and their sub-components.
3. Detailed Parts Lists: Each figure is accompanied by a corresponding parts list. These lists itemize every component of an assembly, providing its description, a unique DEC/Vendor part number, and cross-references to other figures where applicable. Notably, many parts listed (like printers, terminals, modules, and various kits) are designated as "not shown" in the visual diagrams but are included as associated components or options.
4. Part Number/Description Index: A comprehensive alphabetical index at the end allows users to quickly locate specific parts by either their part number or a descriptive name.
5. Legal and Copyright Information: Standard disclaimers, copyright details, and a list of trademarks are also included.

Overall, the document serves as a comprehensive reference for identifying, ordering, and understanding the components of the HSC90/60 Storage Controllers for maintenance and repair purposes.