RL8A/RL28A Disk Controller

This document is a Field Maintenance Print Set for the RL8A/RL28A Disk Controller. It includes a table of contents, a drawing directory, a system interconnection diagram, and detailed schematics and engineering specifications for the M8433 disk controller board and associated components. It also outlines the installation, unpacking, inspection, and acceptance procedures, and contains a full parts list for various configurations of the RL8A/RL28A system.