Digital AlphaStation 200 4/233 CPU Upgrade Information

This document serves as a technical guide for performing a CPU upgrade on the Digital AlphaStation 200 Series computer to the 4/233 model. The process involves replacing the existing CPU and heatsink assembly, replacing the oscillator chip, and installing a jumper on the motherboard.

Key Contents:

• Kit Inventory: A list of all components provided in the upgrade kit, including the CPU/heatsink assembly, oscillator, jumper, and labels.
• Safety Instructions: Essential precautions regarding electrostatic discharge (ESD) and handling delicate electronic components.
• Step-by-Step Installation:
  • System preparation and cover removal.
  • Removing the old CPU and oscillator.
  • Installing the new CPU and oscillator.
  • Jumper configuration at position J30.
  • Post-installation tasks, including applying identification labels.
• Troubleshooting: Guidance on resolving issues if the system fails to boot properly, including a table for decoding diagnostic LED values to identify specific component failures.