23 Oct
2015
23 Oct
'15
12:39 p.m.
On Fri, Oct 23, 2015 at 9:08 AM, Al Kossow <aek at bitsavers.org> 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
Hm. It would be interesting to test the servo failure hypothesis; 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.)
- Josh
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 emits a
high-pitched, quite loud whine/buzz which persists until you power the
drive down. The drive is unresponsive during this time.
Sounds like a failure of the positioner servo. It is on a separate platter.
It should be possible to build something to open the servo loop and
position the heads
externally. One of those projects that I would like to get to some day. I
have about 50
Maxtor ESDI drives from Apollo's build system that I REALLY want to get
the data off of
and I suspect there will be the same sort of problem with them.