You might try a Status Clear. To do this you will need a service key (one with an S stamped on it). If you don't have one, you'll need to take the register to a dealer to have it done. Here's the procedure:
1) Unplug the register.
2) Insert the S key and turn it to the BLIND position. This is one click clockwise past the Z position at approximately the 5 o'clock position.
3) Plug the register in. If this works, the register will print STATUS-C on the printer.
4) Turn the key back to REG.
Good luck ...
Steve, September 2009