Emax

Hello all,

Well, I'm a bit confused....I've just received an Emax II rack, which has a broken floppy drive, 
(Sony MPF420-1). The drive powers up, but doesn't load a disc, so I've replaced the broken 
drive with a working drive from an Emax II keyboard, (TEAC FD-235HF)......the only problem 
is....the light on the replacement drive doesn't come on at all, and the Emax II rack isn't 
seeing the drive.
The drive from the keyboard is full height, and is in full working order when connected to my 
Emax II keyboard.
The jumpers look different.....could it be a jumper problem?
I would be very grateful for any advice.
Happy Holidays to you all!!!

All the best

Dave