Browse Prior Art Database

VFO Test Method

IP.com Disclosure Number: IPCOM000064372D
Original Publication Date: 1985-Jul-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
Pertzborn, JJ Schmierer, QG [+details]

Abstract

The attachment of magnetic media diskette devices to a computer system involves multiple field replaceable units (FRUs) comprised of digital, analog and electromechanical components to adapt the magnetic media diskette devices to the computer system. In the event of a failure or intermittent failure symptoms, it is imperative to isolate to the failing FRU. Through usage of the actual functional hardware and providing a loop back path, it is possible to verify/isolate sections of the design for checkout under actual system operational conditions. During functional verification mode, a system diagnostic command is issued to a Diskette Function Controller 10 comprising diskette attachment electronics (Fig. 1).