Rk05 - Quarterly Procedure

Summary

This document outlines the quarterly maintenance and verification procedure for RK05 Disk Drives used within the Fuel Handling System. The primary purpose is to ensure the drives are operating correctly, have clean components, and maintain proper alignment.

Key procedures include:

• Cleaning and Inspection: Involves running diagnostic programs (RKFRMT), cleaning prefilters, inspecting for physical damage or wear (shock mounts, LEDs, switch operation), and performing a detailed head inspection for contamination or damage.
• Power Supply Checks: Verifies that voltage outputs (+5V, +15V, and -15V) are within specified tolerances and checks ripple levels. It includes instructions for making necessary adjustments to the regulators.
• Head Alignment Checks: Describes the setup for an oscilloscope to monitor signals and the use of the ALIGNX diagnostic program to ensure the drive heads are accurately aligned to cylinder 105 following a thermal stabilization period.

Safety Precautions: The document emphasizes that the disk drives are sensitive to contamination (smoke, fingerprints, dust) and that the electronics are susceptible to short circuits. Technicians are advised to use insulated probes, handle the powerful SERVO motor with care, and ensure the interior remains free of debris to prevent head crashes.