DECsystem 5100 Maintenance Guide Addendum

This document serves as an addendum to the DECsystem 5100 Maintenance Guide (EK-422AA-MG). It provides technical information, configuration guidelines, installation procedures, and troubleshooting diagnostics for three specific storage options: the RRD42 Disc Drive, the RZ23L Hard Disk Drive, and the TZK10 Cartridge Tape Drive. The guide includes detailed jumper settings, interface specifications, and physical requirements for each device to assist customer services personnel and self-maintenance customers. Additionally, an errata section is included at the end of the document regarding the installation procedure for the RRD42 drive.