Intellec MDS questions

[Dwight K. Elvey]

>From: "Joe R." <rigdonj at cfl.rr.com>
>
>  I have the schematic of the cable and adapter board somewhere but I won't
>have time to look for them anytime soon. The adapter board has some tricky
>wiring on it and IIRC the cable IS NOT straight through.  I've had a hell
>of a time getting non-Intel disk drives to work in the MDSs. I have quite a
>few of the same model drives (with different revision boards) and I haven't
>gotten ANY of them to work in a MDS. Yes, I've set all the jumpers. I've
>spent at least three days trying various drives but never could get one to
>work. My suggestion is to search out an Intel drive in the surplus places.
>Intel sold a LOT of these systems and there used to be a lot of them in the
>surplus equipment places.
>
>   Joe
>

Hi Joe
 When I worked at Intel, ( I recall ) I was told that the
M2FM drives had a few capacitors changed in the input amp section
to increase the high frequency response. You might compare
the components from an Intel drive with the same model
drive ( mostly SA800's I thought ). It might be resistors
but it seems like I recall being told it was capacitors. 
You could then post this for people that were bringing up
their MDS800's but didn't know where to find drives.
 If I get a chance this weekend, I'll look at the drives
I have to see what changes there might be.
Dwight