AlphaServer DS20

This document is an Illustrated Parts Breakdown (IPB) for the AlphaServer DS20, published by Digital Equipment Corporation in December 1998. Its primary purpose is to help users identify specific parts and their locations within the AlphaServer DS20 hardware product.

The manual is structured with figures providing visual representations of assemblies and subassemblies, accompanied by corresponding parts lists. Each entry in a parts list details the figure and item number, a description of the part, its Digital/Vendor part number, revision levels, and cross-references to other figures where applicable.

Key components detailed across the document include:

• The AlphaServer DS20 6/500 Distributor.
• The AlphaServer DS20 6/500 Kernel Assembly, including the Alpha DP264 Daughter Card.
• Components of the AlphaServer DS20 without the CPU/Memory or I/O, such as the CD-ROM, power supply, system box enclosure, and various internal modules and labels.
• A comprehensive breakdown of the System Box Enclosure Assembly, detailing frames, covers, backplanes, speakers, fan assemblies, a floppy drive, SCSI bus extenders, OCP modules, and an extensive list of cables, harnesses, and ties, along with diagrams for various configurations (UltraSCSI, Triple Controller Split Backplane, and Dual Power Supply N+1).

The document also includes an ECO/REVISION HISTORY table tracking assembly revisions and provides a detailed Part Number/Description Index for easy lookup of components. It is an essential reference for maintenance, repair, and parts ordering for the AlphaServer DS20 system.