You can reset your printer by following this:
1) Turn the printer off
2) Press and hold the STOP button for 3 seconds.
3) Then press the ON button and release the STOP button.
4) While holding the ON button, press the STOP button 5 times.
5) Release all buttons.
6) LCD Screen should turn on and be blank. After a minute or better turn the printer off once more.
This should be the reset.