On Oct 24, 2015 6:36 PM, "Josh Dersch" wrote:
>
>
> To add insult to injury, one of the heads is loose (the glue holding it
on dried up and it fell off after the impact of running off the platter) so
this drive is basically toast. At least now I can kind of see how one
takes
> On Oct 24, 2015, at 14:22, Al Kossow wrote:
>
> On 10/24/15 11:40 AM, tony duell wrote:
>
>> Most likely those ICs are head switch/preamp devices and the servo head
>> preamplifier. They are very likely to be custom.
>>
>
> Silicon Systems was a common supplier in the
On 10/24/15 10:15 AM, Josh Dersch wrote:
there are a few ICs surface-mounted to the flat ribbon
cable running to the head assembly.
Those are the head preamps. You should be able to scope out if there is
anything coming out of them.
On 10/24/15 11:40 AM, tony duell wrote:
Most likely those ICs are head switch/preamp devices and the servo head
preamplifier. They are very likely to be custom.
Silicon Systems was a common supplier in the 80s to mid-90s, which is why their
Storage Products data books have been scanned.
On 10/24/15 11:40 AM, tony duell wrote:
That's pretty much what I figured. I took a closer look at one of the
other dead XT2190s I have that I'd opened up to inspect awhile back and
there are a few ICs surface-mounted to the flat ribbon cable running to
the head assembly. I suppose it's likely
>
> That's pretty much what I figured. I took a closer look at one of the
> other dead XT2190s I have that I'd opened up to inspect awhile back and
> there are a few ICs surface-mounted to the flat ribbon cable running to
> the head assembly. I suppose it's likely that one of these has failed,
>
was told, "we shipped it brick
by brick."
Tom
-Original Message-
From: Noel Chiappa [mailto:j...@mercury.lcs.mit.edu]
Sent: Friday, October 23, 2015 2:50 PM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: Miniscribe "bricks" (was Re: Common Maxtor MF
On Sat, Oct 24, 2015 at 2:36 PM, Tom Gardner wrote:
> The MiniScribe brick story is told at:
> http://chmhdd.wikifoundry.com/page/MiniScribe+files+bancruptcy
>
> The apocryphal tale is that when the Maxtor President visited his then
> recently acquired MiniScribe
On 10/23/15 12:04 AM, Josh Dersch wrote:
The 2190 does not, and it fails in precisely the same way I've personally seen
three or four other Maxtor drives of the same era fail: It spins up fine, but
when it goes to load the heads, it sounds
like the voice coil positioner for the heads is
On 10/23/15 1:33 AM, Joseph Lang wrote:
the scream is the stepper motor trying to move with only one phase working.
(Also a common drive failure.)
Maxtor drives have a very distinctive (and loud) recal sound.
On 10/23/2015 09:10 AM, Al Kossow wrote:
Maxtor drives have a very distinctive (and loud) recal sound.
And some Maxtor drives are Miniscribes. I have one (I think it's an
ESDI, IIRC) that has a beautiful Miniscribe HDA casting, with a Maxtor
label wrapped around it.
Ah, the good old days
>
> > The 2190 does not, and it fails in precisely the same way I've personally
> > seen three or four
> > other Maxtor drives of the same era fail: It spins up fine, but when it
> > goes to load the heads,
> > it sounds like the voice coil positioner for the heads is "screaming" -- it
> >
On Fri, Oct 23, 2015 at 9:08 AM, Al Kossow wrote:
> On 10/23/15 12:04 AM, Josh Dersch wrote:
>
> The 2190 does not, and it fails in precisely the same way I've personally
>> seen three or four other Maxtor drives of the same era fail: It spins up
>> fine, but when it goes to
- Ursprüngliche Message -
> Von: Chuck Guzis <ccl...@sydex.com>
> An: General Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org>
> CC:
> Gesendet: 18:16 Freitag, 23.Oktober 2015
> Betreff: Re: Common Maxtor MFM drive failure mode -- any ideas?
Hi all --
I acquired a Symbolics 3640 today and it came equipped with two "large"
capacity Maxtor MFM drives (an XT-1140 and an XT-2190). The 1140 spins
up fine and we were able to image it using Dave Gesswein's MFM emulator
(yay).
The 2190 does not, and it fails in precisely the same way
On 10/23/15 12:39 PM, Josh Dersch wrote:
I don't
suppose anyone has a service manual for these things so I know what stuff
to probe? (Nothing on Bitsavers and a casual Google search turns up
nothing of interest.)
Service manuals/schematics/ASIC info is EXTREMELY difficult to get for anything
On 10/23/2015 02:49 PM, Noel Chiappa wrote:
From: Pierre Gebhardt
Haha, I guess you're alluding to the massive scam with the bricks,
Miniscribe did back them to pretend stocks full of disk drives...
Never heard the story. Can someone oblige?
BTW, are there any other similar stories from
> From: Pierre Gebhardt
> Haha, I guess you're alluding to the massive scam with the bricks,
> Miniscribe did back them to pretend stocks full of disk drives...
Never heard the story. Can someone oblige?
> BTW, are there any other similar stories from the disk drive buisiness
On 10/23/15 1:19 AM, Joseph Lang wrote:
There is a plastic bumper in the head/disk assembly that turns to goo.
When the head retracts it hits the bumper and gets stuck in the goo. The goo
will eventually win. The head will no longer load. I can't say For sure this is
your disk problem but it
If the bumper is there it will be on the side wall of the HDA where the head
actuator would touch when retracted.
If the heads move freely you have a driver failure. the scream is the stepper
motor trying to move with only one phase working. (Also a common drive failure.)
Joe
> On Oct 23,
There is a plastic bumper in the head/disk assembly that turns to goo.
When the head retracts it hits the bumper and gets stuck in the goo. The goo
will eventually win. The head will no longer load. I can't say For sure this is
your disk problem but it was a verry common Maxtor failure.
Joe
>
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