I'm also experiencing issues w/ a P-02. The tray will not eject, and gives an error message on the screen. After recycling the power a couple of times, the tray did function, and I was at least able to remove the disc that was in the unit. Since retracting, it has not ejected again, however.
Just to confirm, the link posted above for the belts (https://marvac.com/products/scb2-5?_pos=1&_sid=09740e28b&_ss=r) is correct for the P-02?
Did you ever determine the appropriate part number for the Bando belt?
Thanks.
- Tomás