Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!apple!portal!cup.portal.com!LaserMan
From: LaserMan@cup.portal.com (Bob LaserMan Murrow)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Sony 40MB HDs
Message-ID: <39986@cup.portal.com>
Date: 9 Mar 91 18:39:20 GMT
References: <11623@uhccux.uhcc.Hawaii.Edu>
  <1991Mar6.185717.16269@dartvax.dartmouth.edu>
Organization: The Portal System (TM)
Lines: 9

There is a known problem at Apple with the Sony 40 meg drives. I have
heard from 2 reliable sources at Apple that these drives have a lubrication
migration problem causing the stiction problem reported here. There is
a missing seal on the actuator arm per my sources that allows grease to
migrate to the platter. When the aromatics disapate the grease gets real
sticky and the heads stick to the platter. One cure is to never turn off the
drive and let it cool down... I have another brand drive that does this that
i have had on for 3 years... not nice but it works.
Bob