Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!sun-barr!decwrl!megatest!cohesive!pryals
From: pryals@cohesive.UUCP (Phil Ryals)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Rodime 450 RX problems...
Message-ID: <691@cohesive.UUCP>
Date: 10 Dec 90 21:43:20 GMT
References: <131333@tiger.oxy.edu>
Reply-To: pryals@cohesive.UUCP (Phil Ryals)
Organization: Racal-Milgo, Los Gatos, CA
Lines: 11

In article <131333@tiger.oxy.edu> schorsch@oxy.edu (Brent William Schorsch) writes:
>Every onece in a while, when my hard drive feels like it, it "kur-chunks"
>i.e. it sounds exactly like it is auto-parking, yet the power is
>still on. I could be in MSWord, maybe some game, maybe NSCA Telenet, it
>makes no difference. It has done this for system 5.0, 6.02, 6.03, 6.05...

I used to have a similar problem with a DataFrame XP-20.  Turned out to be
static electricity discharges that somehow caused the drive controller to
recalibrate head position.  Relocating the negative ion generator (air
purifier) and grounding the frame of the table that the drive was on
cured the problem.