On Thu, 24 Jun 2004, Dave Dunfield wrote:
> At 11:01 24/06/2004 -0700, you wrote:
> >Hi
> > Check the termination. Make sure that only one
> >of the drives has a terminator and that it is
> >the correct type for that kind of drive. It
> >is prefered that the terminator is on the last drive
> >in the string but I've never seen problems when
> >the drives are side by side.
> >Dwight
>
> The Morrows use a very odd termination scheme - both
> drives have terminatore, and both drive have separate
> drive cables, going to two different (and spaced fairly
> far apart) connectors on the mainboard.
>
> I've tried all combinations (both in, one or the other in,
> both out) - always fails on the TEC drives, always works
> with the Panasonic.
It would seem that there are a couple of possibilities for your
problems: - a damaged lower head or read electronics that do not
permit the drive to find a directory or - less likely - incorrect
strapping for drive select and the variables on the drive board.
The rather brief Service Guide that I have for the Morrow MD
series provides no detail at all on the drives. However, they do
caution to replace the A and B drives in the position that they
were removed from such as to not cross up their identity to the
computer. No other manual that I have provides any information on
the TEC FB-503 beyond the fact that it is a half-high 5.25" DS
drive with a 360k capacity.
- don
> I would really like to keep the TEC's in it, as they are
> original equipment, and the serial #'s match the assembly
> manifest sticker inside the unit.
>
> Regards,
> Dave
> --
> dave04a (at) Dave Dunfield
> dunfield (dot) Firmware development services & tools: www.dunfield.com
> com Vintage computing equipment collector.
> http://www.parse.com/~ddunfield/museum/index.html
>
>
Received on Thu Jun 24 2004 - 17:27:21 BST