ICL PERQ 2 T2 Micropolis 1303 spinning down.

[Mattis Lind]

Den lör 2 jan. 2021 kl 11:48 skrev Rob Jarratt <robert.jarratt at ntlworld.com
>:

> When that has happened to MFM disks of mine it has been because for one
> reason or another the heads have not moved and found track 0. Why they
> aren't moving could be more than one reason. They could be stuck, or there
> could be some other problem that is preventing them getting the power
> needed to move.
>

Did you solve the problem? How?

I have heard that Micropolis 1325 is prone to have a problem with a rubber
bumper that sticks to the head mechanism. Maybe it is the same for this
Micropois drive? What resolutions are there to this type of problem?

/Mattis


>
> Regards
>
> Rob
>
> > -----Original Message-----
> > From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Mattis Lind
> via
> > cctalk
> > Sent: 02 January 2021 08:59
> > To: General Discussion: On-Topic and Off-Topic Posts
> > <cctalk at classiccmp.org>
> > Subject: ICL PERQ 2 T2 Micropolis 1303 spinning down.
> >
> > I have a nice ICL PERQ 2 T2 that I am going to start working with now.
> >
> > First thing was to try to image the hard drive. It is a Micropolis 1303.
> It spins
> > up but when it reaches what I think the correct speed it immediately
> spins
> > down. Usually I think there would be a click and then the heads would
> > recalibrate. But there is no click and no head movement.
> >
> > I really would like to make an image of the drive.  What are your
> thoughts?
> > Are the heads sticking?
> > Some kind of solenoid that is not releasing the heads? Not properly up to
> > speed? (but it sounds like the speed is right)
> >
> > /Mattis
>
>