technics kn2000 floppy drive

I'm hoping someone can help me with this. I have a kn2000 keyboard however the floppy drive died on me and was wondering, has anyone ever replaced one? If so, what other style drive will work on it? Or where can I buy a replacement one?

Thank you in advance for the help.

It has been reported in the past, that when a Floppy Drive stops working, it is just the drive belt which has either slipped its position or has broken - worth checking.......