I remember having a 3370 (I think) replaced on a 4331. The CE said the reason the MAP ran for so many pages was that the Head and Drive assembly (HDA) was the most expensive part of the drive, so the Diagnostic floppy would exhaustively test every component before it failed the Head and Drive Assembly. He was pretty sure it was the HDA and arrived with one, which was left to acclimatize (I think it needed 4 hours) while he ran through the MAP.
Glorious days, Dave Wade G4UGM Illegitimi Non Carborundum -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of David Boyes Sent: 09 March 2009 15:47 To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Must be Friday: Mainframe USBs! The 308x had a FBA device for the support processor to use. Wasn't customer accessible, though. I remember helping a CE replace one once when it failed on a 3081D. Messy. The MAP ran for tens of pages. On 3/9/09 11:42 AM, "Edward M Martin" <emar...@aultman.com> wrote: I believe that the 3090 or something similar. It has been awhile since the CE and I talked about devices.
