21 Oct
2016
21 Oct
'16
2:32 p.m.
The ones I have (except of cause the working) seem to find trk0 and generates a drive not
ready after that point.
I've done some measurement on the drives but they aren?t very consistent with the
service manual.
There seems to be a jumper configuration which places the drive in a test mode, I've
seen it somewhere but can't find it online anymore.
I seem to have a hardcopy of it somewhere, I'll look it up, maybe it is of some help.
-Rik
-----Oorspronkelijk bericht-----
Van: cctalk [mailto:cctalk-bounces at classiccmp.org] Namens Al Kossow
Verzonden: vrijdag 21 oktober 2016 23:13
Aan: cctalk at classiccmp.org
Onderwerp: Re: HP 7945 disk format
I suspect it's the head servo.
I've been trying to get a solid read out of the v170 I've been experimenting
with
all morning.
It chugs along, recals, then a seek failure.
I'd also like to understand the failure mode of Maxtor positioners. I had a 2190
croak (literally) as I was trying to read it.
click, click, click, CROWKKKKKKKKK, clunk.
On 10/21/16 1:22 PM, Rik Bos wrote:
But do you know the cause of failure of these
drive's, except of cause the
obvious shorting tantalium caps?
> I used hpdrive to backup the working one.
>
> -Rik
>