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From: bobo@pecan15.cray.com (Bob Kierski)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Quantum Spinning Its Platters
Message-ID: <112155.17248@timbuk.cray.com>
Date: 7 Jan 91 17:35:58 GMT
References: <0.mac.hardware@pro-angmar> <1990Dec30.103450.11346@athena.mit.edu>
Reply-To: bobo@pecan15.cray.com (Bob Kierski)
Organization: Cray Research, Inc.
Lines: 26


In article <1990Dec30.103450.11346@athena.mit.edu>, toad@athena.mit.edu (John P. Jackson) writes:

|> Well, one thing that this could be, and it's specific to quantum drives, is
|> a ROM routine that excercises the read/write head mechanism when the drive
|> senses that the lubricant for this assembley is becoming too viscous.  About
|> a year and a half ago, many Apple customers began experiencing startup problems
|> with their hard drives.  The problem was found to be in Quantum drives that
|> Apple OEM'd.  The drives read/write head mechanism was lubricated with a
|> grease that became too sticky when it absorbed moisture.  When this happened,
|> it wouldn't move after the computer had been turned off for a while.  Quantum's
|> solution to this was to replace the drive's ROM with one that included a
|> routine that caused the heads to be moved rapidly back and forth from time to
|> time to insure that the lubricant didn't begin to set.
|> I would think that they would have corrected this in some other way by now,
|> but you never know.  I would say that you should definitely get in contact
|> with whomever you bought the drive from, and ask them about it.  If your
|> really are hearing a GRINDING sound, then it may be something else.  In any
|> case, contacting who you got it from will help to CYA if the drive dies a day
|> out of warranty.  Good luck!

That was the Q80.  And I thought the solution was to increase tork at startup.
--


Have a day,