Wow I've never heard of this either. I would try and contact a repair center. Until then keep trying to get it to reset. Is your DZ plugged directly to a power source or through a power strip. If it is on a power strip maybe try plugging it directly to the wall outlet and try and reset that way.
2 x SL-1210 M5G
2 x SL-DZ 1200
DJM 909/800
MV 8800 / MPC-500/ FL Studio 9 Signature Bundle / Axiom 61 / Torq