help! shugart 801

From: Dwight K. Elvey <dwightk.elvey_at_amd.com>
Date: Tue Jul 22 11:30:01 2003

>From: Joe <rigdonj_at_cfl.rr.com>
>
> I have several systems that use Shugart 800-1 SS 8" disk drives. I've
>got several defective drives plus I've been wanting some spares. Last week
>I picked up 10 Shugart model 801 SS drives. Today I tried to use them on
>the same systems but I can't make them work. I've set all the jumpers and
>straps exactly the same as in the 800-1 drives but the 801s aren't working.
>The system knows the drive is there and detects the disk being in place and
>rotating and that the drive door closed but the drive never gets the head
>load signal. I'm using the same system, cables, power supply, etc with both
>drives so the only difference is the drives themselves. I've tried a couple
>of 801s and gotten exactly the same results with all of them so I don't
>think that it due to a drive failure. Anybody have any experience with
>these or have a good idea of what's wrong?
>
> Joe
>


Hi Joe
 You do know that some of the drives have data separators.
I forget which numbers have this and which don't. I don't recall
if the 800-1's had them or not. If you are using these for
M2FM, is seems that I remember that the bandwidth was slightly
increase on these drives. As I recall, there was a capacitor
change in the pre-amps.
 Those are the only things I can think of.
Dwight
Received on Tue Jul 22 2003 - 11:30:01 BST

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