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Details the features and specifications of the HP-87 computer system.
Outlines critical safety precautions for operating and servicing the HP-87.
Provides a general approach to diagnosing and resolving issues with the HP-87.
Guides users through basic procedures to identify and fix common problems.
Specific procedures for diagnosing and repairing power supply issues.
Instructions on how to properly remove and tighten screws during disassembly and reassembly.
Detailed steps for removing and reinstalling the HP-87 keyboard assembly.
Guides for replacing various Printed Circuit Assemblies (PCAs) like logic, power supply, and CRT.
List of replaceable parts for the HP-87 keyboard assembly with part numbers and quantities.
Catalog of common replaceable parts for the HP-87 computer, including part numbers.
Detailed schematic diagram for the Logic One printed circuit assembly.
Schematic diagram illustrating the power supply printed circuit assembly.
Schematic diagram for the Cathode Ray Tube (CRT) printed circuit assembly.
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General
