Digital AlphaStation 400 Series

This document, dated August 1994, serves as a technical manual for the PB50C-BA CPU module within the Digital AlphaStation 400 Series systems. It covers the following key areas:

• Features: Outlines the specifications of the module, including the 233 MHz DECchip 21064A (EV4S) CPU, cache memory, core logic, and diagnostic tools.
• Procedures: Provides step-by-step instructions for safely removing, configuring, and installing the CPU module, emphasizing electrostatic discharge (ESD) precautions.
• Configuration: Details the jumper settings on the board for features such as SROM control, flashROM write protection, DROM configuration, and pushbutton functionality.

The manual includes warnings and cautions to prevent hardware damage and personal injury and references additional documentation for complete system installation and user guidance.