RM05

This handbook provides technical reference material for field service engineers working with the RM02, RM03, and RM05 disk drives. It contains:

• Register Definitions: Detailed bit-level descriptions for the RM adapter registers.
• Maintenance and Adjustment: Procedures for head alignment, servo system checks, and write/read circuit testing.
• Component and Spares Information: Cross-reference tables for DEC and CDC part numbers, along with branch spares kit details.
• System Configuration: Documentation on backplane revisions, compatibility charts, and backplane pin assignments for the Massbus interface.
• Technical Appendices: Includes documentation lists, drive specifications, and technical tips (Tech Tips) for troubleshooting common issues like 'Data Lates' and head crashes.

Note: The document explicitly states it is not a step-by-step troubleshooting guide, but rather a time-saving reference for experienced engineers.