RJP04 Moving Head Disk Subsystem

This maintenance manual provides technical information for the RJP04 Moving Head Disk Subsystem, which consists of an RH11 Device Controller and up to eight RP04 Disk Drives. The document covers:

• System and Physical Description: Overview of the Massbus and Unibus interfaces.
• Massbus Interface: Details on signals and cable configurations for single and dual-port setups.
• Operation and Programming: Includes track formatting, function codes, and register specifications.
• Theory of Operation: Describes the register control path and DMA data path.
• Detailed Logic Description: In-depth explanation of the RH11 logic diagrams (BCT, CSR, DBC, PAC modules).
• Installation and Maintenance: Procedures for physical/electrical installation, power supply configuration, and diagnostic testing routines (MAINDEC series).