Memory Channel

This service manual is intended for Digital service engineers and maintenance technicians. It provides detailed information on the PCI Memory Channel (MC) architecture, including configuration requirements for various AlphaServer models, installation and replacement procedures for Field-Replaceable Units (FRUs) such as the CCMAA adapter, link cables, and CCMHA hubs. It also covers hardware verification diagnostic procedures (mcdiag, mccable) and comprehensive troubleshooting guidelines, including error logging, interpretation of error events via DECevent, and a description of MC registers for fault isolation.