DECstation 5000 Model 240, R4000 Series CPU Upgrade

This document provides step-by-step instructions for upgrading a DECstation 5000 Model 240 from its original R3000 CPU to an R4000 Series CPU.

The guide covers:

1. Pre-installation checks: Verifying shipment contents and ensuring the system is running ULTRIX 4.3A or later, along with instructions for system shutdown and obtaining boot information.
2. Hardware installation: Removing the system unit cover, attaching an antistatic wrist strap, removing the old R3000 CPU module, installing new rivets and EMI grounding clips, and finally inserting the new R4000 Series CPU module.
3. Post-hardware assembly: Replacing the system medallion and cover.
4. Software configuration: Instructions for turning on and rebooting the system software.
5. Logistics: Directions for returning the old R3000 CPU module to Digital Equipment Corporation and updating the hardware service contract.