From: Spiro Trikaliotis (ml-cbmhackers_at_trikaliotis.net)
Date: 2005-06-17 08:48:36
Hello,
* On Thu, Jun 16, 2005 at 11:35:39PM +0200 Patrycjusz R. ??ogiewa wrote:
> Congratulations on getting your first 1581s!
Thank you. Its almost 20 years after I wanted it for the first time, but
anyway. :-)
> >What are your experiences? Is this really normal?
[...]
> Several years passed and I eventually managed to collect a couple of
> working 1581s again and again none suffered the symptoms you
> described. Although I recall I had several 1581s from my customers
> for servicing, which did have problems with the drives. In most cases
> those were the very same, somewhat unreliable Chinons, which were so
> often loaded into A-500s.
Well, both of my drives tell me they are from Matsushita (model no.
JU-363-292).
> In many cases when the mechanism fell out of the regular range (e.g.
> due to failing or misaligned T0 light gate), it got "stuck" in the
> extreme position and couldn't move back on itself.
This sounds very much like the symptom on my first drive: The head could
not move itself anymore.
> BTW. The head should do the headseek (similar to what the older PC
> BIOS does on startup) whenever a diskette is inserted on power-up. It
> doesn't have to be PC formatted one.
Yes, you are right. I gave it wrong from my memory. Ray tells that with
IBM formatted disks, the drive starts to move over and over, trying to
find a good track to read. With a 1581 formatted disk, the head will go
to track 40 and remain there.
Regards,
Spiro.
--
Spiro R. Trikaliotis
http://www.trikaliotis.net/
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