There are 3 buttons that I know of. The one by the power switch seems to hard reset the machine. The one on the main board is needed to start the system after a hard reset. There is another button underneath the board that has a numeric lit LED chip which I have figured out that if it says 7 that means the ball out sensor is empty. I have no clue what that button does though. Seems like it does nothing.


Sent from my iPhone using Tapatalk