MicroVAX 3100 Model 80 to Model 90 Upgrade Guide

This document is the "MicroVAX 3100 Model 80 to Model 90 Upgrade Guide," published by Digital Equipment Corporation in September 1992.

It provides detailed instructions for both Digital Services representatives and qualified self-maintenance customers on how to install and test the upgrade kits to convert a MicroVAX 3100 Model 80 system to a Model 90.

Key aspects covered in the guide include:

• Upgrade Kit Contents: A list of parts included in the upgrade kits.
• Installation Procedures: Step-by-step instructions for the physical upgrade, including backing up system software, shutting down the system, removing the old KA47-AA CPU module, installing the new KA50-AA CPU module and memory, and updating system labels.
• System Differences: A description of the differences between the Model 80 and Model 90 CPU module features.
• Module Return Procedures: Separate, mandatory procedures for Digital Services and self-maintenance customers to return the replaced parts (specifically the old KA47-AA CPU module). This is emphasized as crucial for U.S. Export License compliance and ensuring the customer receives credit.
• Forms and Checklists: Appendices provide the necessary forms, checklists, and labels required for documenting the upgrade and returning the modules.