QUME DT/8 - anyone have a manual/schematic for this?

[Tony Duell]

> 
> I have a Qume DT-8 8" DS drive here which I'm trying to restore/repair 
> to dump a number of 8" floppies, but I lack the manual and schematic for 
> it, and I have no idea what the pinout for the data/power/spindle 
> drive/etc connectors is. It doesn't use a standard shugart connector for 
> data at least, its a 50-pin thing, so I'll need to make some sort of 

Eh? A 50 pin connector on an 8" drive sounds like a standard Shuagart 
(SA800 type) interface to me. Why do you suspect it's anything different?

> pinout converter once I know the proper pinout. The 2 terminators are 
> both installed.
> I do know the drive needs 5v and 24v to run, and I'm not about to power 
> it up without checking EVERYTHING first. I'm also missing the funny 
> 3-pin and 6-pin molex-like connectors used to supply power to the pcb 
> and the spindle motor, if anyone has any spares.

You should be able to find the +5V and ground pins (at least) by tracing 
the connections from the 6 pin connector to the logic ICs.

The spindle motor _may_ be an AC motor, the 3 pins on that connector 
being the 2 sides of a power line and gound (the latter is easy to 
identify). Many of these motors, even in Europe, were 110V (and run off 
an (auto)transformer over here), there are a few 230V ones around, 
though. And of course the AC freqeuncy is critical, it determines the 
spindle speed (in general it was possible change the motor pulley to get 
the spindle speed correct at either 50 or 60Hz).

-tony