I need a service manual for a 1/2 height 5.25" Tandon floppy drive or even just a photo for drive selection and other optional jumpers. Model number is not clearly labeled on it and so I'm not sure if 48/96 track etc. I think there's a missing drive select jumper and don't have experience with this model drive. There are two empty IC-type sockets near the main interface connector and I'm assuming one would be a terminator resistor pack and the other for setting up drive number etc. That's the one I need help with.