AlphaStation 255 4/300

This guide covers the necessary hardware procedures to upgrade the CPU performance of the AlphaStation 255 Series workstation. The document includes:

• Kit Inventory: Identification of required components.
• Preparation: Steps to back up data, shut down, and open the system chassis.
• Hardware Installation: Detailed procedures for removing the old CPU assembly, replacing the INT/PAL component, and installing the new CPU assembly.
• Configuration: Instructions for setting CPU speed via switches.
• Post-Installation: Final assembly steps, label application, and instructions for returning the replaced parts to Digital Equipment Corporation.
• Troubleshooting: A reference table to resolve common issues post-upgrade.