Yamaha PSR 9000 V2 Problem with Disk Drive and HD

[Borislav]

The keyboard has not been used in many years. When i turn on the keyboard it works, but the hard drive cant read the midi files that was stored.

The disk driver also cant read midi files from my floppy disks.

How can this be repaired so i can use midi files on the keyboard?

Is the HD and DD replaceable, if so what type fits this model keyboard.