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From: d_haverkamp@rk7 (David Haverkamp)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: GVP Series II with Quantum: Drive mak
Message-ID: <1991Mar22.153336.948@zoot.avgrp.cr.rok.com>
Date: 22 Mar 91 15:33:36 GMT
References: <9103101938.10.119#@BRAINWAVE> <19FZLFB@dri.com> <9103202259.27@rmkhome.UUCP>
Sender: news@zoot.avgrp.cr.rok.com
Organization: Rockwell International; Cedar Rapids, Iowa
Lines: 34

In article <9103202259.27@rmkhome.UUCP> rmk@rmkhome.UUCP (Rick Kelly) writes:
>In article <19FZLFB@dri.com> liberato@dri.com (Jimmy Liberato) writes:
>>>I have had my GVP Series II card with 40 meg Quantum for 4 months and
>>>have noticed that I can hear the drive working for short bursts BUT the
>>>green hard disk light on the front of the Computer doesn't light up. Is
>>>this indications of impending doom with my Quantum as I still have it
>>>under warranty. It just make a read noise say every three minutes for
>>>about 1 second.
>>
>>Quantum got burned by the infamous stiction problem on an OEM contract
>>with Apple a year or so ago.  Their "fix" was a new prom that regularly
>>moves the heads all around.
>
>
>It was actually a 2 part fix.  Besides moving the head around, it also has
>a fix in the rom to change the current ramp up time at power on.  This causes
>it to yank harder at the heads when moving them from the landing zone at power
>up.  Stiction is mainly caused by the heads getting stuck in the lubricant
>after the disk is powered down.  Quantum and Seagate buy their platter lubricant
>from the same vendor, and they both had the same stiction problem.  My knowledge
>of this is from being privy to quantum ECO's at the time.
  I assume you may have this stiction problem when you power off without
parking the drive heads...  I always park the heads on my hard disk before
power down.
>
>
>Rick Kelly	rmk@rmkhome.UUCP	frog!rmkhome!rmk	rmk@frog.UUCP


--
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David A. Haverkamp                    Collins Commercial Avionics Division
                                      Rockwell International   MS 124-211
INTERNET: dah@zoot.avgrp.cr.rok.com   Cedar Rapids, Iowa 52498