861A thru F Power Controller Illustrated Parts Breakdown

This document is an Illustrated Parts Breakdown (IPB) for the Digital Equipment Corporation (DEC) 861 series Power Controller, covering models 861A, 861B, 861C, 861D, 861E, and 861F.

Its primary purpose is to identify all assemblies and their individual components, presenting them in a structured, hierarchical manner using an indented parts list.

Key features and information provided include:

• How to Use the IPB: A detailed guide explaining the document's organization, column definitions (e.g., Description, DEC Part No., Used On Code), and symbol usage (e.g., for hardware designators, attaching hardware, and non-field repairable items).
• Engineering Change Order (ECO) Cut-In: Indicates the ECO level at which parts were introduced, modified, or deleted, showing the evolution of the product design.
• Parts Lists: Comprehensive lists that detail each component with its description, DEC part number, relevant ECO information, and which specific 861 models it is used on. It also cross-references to corresponding figures.
• Illustrations: Multiple figures (e.g., Model 861A,B,C,F Assembly, Pilot Control Board Assembly, Model 861D Assembly, Model 861E Assembly) provide visual representations of the assemblies with numbered callouts for easy part identification.
• Revision History: A table detailing the different printings and ECO levels of the manual itself.

The document is copyrighted by Digital Equipment Corporation, with revisions from 1973 to 1982, and this particular version is the 5th printing, dated March 1, 1982. It also includes a comment sheet for user feedback.