DEC-00-RK05-DA RK05maint 72

This document is the RK05 Disk Drive Maintenance Manual, published by Digital Equipment Corporation in 1972.

The manual describes the RK05 Disk Drive as a self-contained, random-access data storage device designed for small to medium computer systems. Key features include its use of a 14-inch single disk cartridge (similar to IBM 2315), two movable read/write heads, and a capacity of 24.4 million unformatted bits across 406 data tracks, operating at 1500 rpm with a 1.44 Mbps transfer rate using double frequency NRZ recording. The design allows up to four RK05 drives to be "party-lined" to a single controller.

The document is structured into five main chapters:

1. General Information: Provides an overview of the RK05 Disk Drive, its detailed performance specifications (including capacity, access times, electrical, environmental, and physical dimensions), available 50/60 Hz power options, and descriptions of its major assemblies and systems (e.g., controls, spindle, linear positioner, cartridge handling, electronic module, air system, and power supply).
2. Installation: Covers procedures for unpacking, mechanical installation, initial checkout, and general operational guidelines, including how to install and remove disk cartridges.
3. Interface: Details the input and output interface lines that facilitate communication between the disk drive and its controller, describing signals for drive selection, cylinder addressing, data transfer, and various status indicators.
4. Theory of Operation: Explains the functional and logical principles behind the disk drive's operations. This includes detailed sequences for start and stop cycles, track addressing, head positioning (seek operations like forward, reverse, and return-to-zero), read/write operations, sector/index pulse generation, fault detection, and the power supply's function.
5. Maintenance: Provides a comprehensive guide to maintaining the RK05, listing recommended tools and test equipment, outlining a preventive maintenance schedule based on operating hours (from 500 to 30,000 hours), and detailing corrective maintenance procedures for components such as the linear positioner, carriage, read/write heads, spindle, and blower motor. It also includes a spare parts list. (Note: The troubleshooting section is mentioned but not included in the provided OCR snippet).