Re: floppy head monitor runs continously .. anyone got a spare?

2003-10-16 Thread James MacPhail 

Hi Tom,

>> I wonder, could I just use my SE's floppy in the Lisa?

>Yes you can, BUT  You have to do some soldering work
>with the 1,44 super-drive

Interesting!

Please post your instructions so we can all have them (unless they are very
long or need pictures).

With this modification:

- does this drive then work with the Lisa OS?
- can one then use HD floppies reliably (although at 800k)?
- is any specific I/O board ROM required?

Cheers!

James

James MacPhail   "Think not of engineering as art,
[EMAIL PROTECTED] but of art as engineering"
Sigma Seven Systems Ltd.
[EMAIL PROTECTED]



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Re: floppy head monitor runs continously .. anyone got a spare?

2003-10-16 Thread Scharpf Thomas 
Hi Stephen,

if you have an original floppy built in in your Lisa, then it has to be a
SONY Model OA-D34V

the electronic in that drive has a sensor, which recognizes when the head is
at the end-position (near the step-motor for the head) but no sensor at the
front-position (near the step-motor for the disk-spin).

If your floppy moves the head "forward" to front or step-motor for the
disk-spin the IC 103 is corrupted (straight below the motor for the head).
If your floppy moves the head "backward" to step-motor for the head probably
only your sensor is out of order. Unplug it at CN103 and try again, or take
a look, whether the sensor is full of dust or grease, or there's a shortcut
due to lubrications. The sensor is relative sensitive to various resitances
caused by an oily shortcut :-))
 
> It might be best to just find a replacement drive.
Yes, but it's worth, that you repair it. there are a lot of Lisas with
replaced components. Hard to find an original one. I would try to check all,
before I would throw away the original drive.

> I wonder, could I just use my SE's floppy in the Lisa?  I
> have a Lisa 2/10 with the H rom version.
Yes you can, BUT  You have to do some soldering work before, cause there
are little differences to that newer drives. One difference is so severe,
that your Lisa won't boot with the 1,44 super-drive due to a caused shortcut
at it's 5V power supply. If you're familiar with soldering, just mail back
and the proceedure follows the next mail. I think there will be a lot of
other people, who want to know how-to-do...
> ... my disk ...  seeks when told to boot but reports an error.
a track 0 error I suppose ? "Quite normal" for older profiles or internal
HDs - unfortunately ;-(

TOM from Bavaria


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Re: floppy head monitor runs continously .. anyone got a spare?

2003-10-15 Thread Marshall Henderson 
I don't have a spare but I've had the same thing happen to me a time or 
two. In both cases, I believe it was after I tried to lubricate the 
mech on the side of the drive. It would continuously "eject" a 
non-existent disk over and over. It seems like I somehow "dried" the 
oil off of one and it began working but I don't really recall as this 
was quite some time ago.

Good luck.

Marshall H.

On Wednesday, October 15, 2003, at 10:49  PM, Stephen M. Jones wrote:

Does the motor spin up, when you insert a floppy or push the little 
stick in
the floppy on the right side, which recognizes an inserted disk?
The error you described, could be caused by a faulty I/O Board (resp. 
a
faulty Lisa Light Adapter, depending on your Lisa modell) or by the 
drive
itself, due to a faulty step-by-step electronic component, which 
triggers
permanently the motor, which moves the head.


Tom, thats right .. basically when I power on the machine the
floppy the step motor moves the head forward until it starts
clicking in place and wont' stop.   It didn't do that before,
only after I had lubricated some of the components so that a
floppy could be inserted and ejected .. From what you're
saying this is a common condition ..
It might be best to just find a replacement drive.

Thanks to the other person for the tip on using my SE for
writing out the DiskCopy images .. I was going to try to
use my 840av .. now I won't ;-)
I wonder, could I just use my SE's floppy in the Lisa?  I
have a Lisa 2/10 with the H rom version.
Ahh, to the other person who responded, my disk isn't
suffering from stick-tion.  It seeks when told to boot
but reports an error.
Anyone have a spare floppy? (or could I use my SE's ?)

What about hard disk alternatives? I'm only guessing that when
I do eventually get LisaOS to boot on floppy I'll be able
to install it on the hard drive.
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floppy head monitor runs continously .. anyone got a spare?

2003-10-15 Thread Stephen M. Jones 
> Does the motor spin up, when you insert a floppy or push the little stick in
> the floppy on the right side, which recognizes an inserted disk?
> The error you described, could be caused by a faulty I/O Board (resp. a
> faulty Lisa Light Adapter, depending on your Lisa modell) or by the drive
> itself, due to a faulty step-by-step electronic component, which triggers
> permanently the motor, which moves the head.


Tom, thats right .. basically when I power on the machine the
floppy the step motor moves the head forward until it starts
clicking in place and wont' stop.   It didn't do that before,
only after I had lubricated some of the components so that a
floppy could be inserted and ejected .. From what you're
saying this is a common condition ..

It might be best to just find a replacement drive.

Thanks to the other person for the tip on using my SE for
writing out the DiskCopy images .. I was going to try to
use my 840av .. now I won't ;-)

I wonder, could I just use my SE's floppy in the Lisa?  I 
have a Lisa 2/10 with the H rom version.

Ahh, to the other person who responded, my disk isn't
suffering from stick-tion.  It seeks when told to boot
but reports an error.

Anyone have a spare floppy? (or could I use my SE's ?)

What about hard disk alternatives? I'm only guessing that when
I do eventually get LisaOS to boot on floppy I'll be able
to install it on the hard drive.

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