19 Sep
2010
19 Sep
'10
7:46 a.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Rob Jarratt
Sent: 12 September 2010 21:17
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RD54 Whine
I have just acquired a MicroVAX 2000 which I found to contain an RD54. If
I try
booting the machine from the disk you hear a whine,
when the whine stops
you can hear the heads move, then when the heads stop moving you hear
the whine again. Is this a terminally sick disk?
Thanks
Rob
I had a couple of private replies on this. Someone suggested turning the
machine on its side, a change in sound might indicate a bearing problem and
that otherwise it might be the servo mechanism. The noise and behaviour did
not change. I don't think it is the bearing, because the heads do not move
when it whines. I suspect it is trying to move the head and can't for some
reason.
I have opened up RD53s to fix the sticky bumper problem and am comfortable
with that. But I recall others saying RD54s are another matter altogether.
Do I have a chance of getting this disk working?
Regards
Rob