Setting prices on Dixie narco 501-e part 1

Getting into the service mode can be tricky if the machine is sensing a problem. I purposefully jammed column 1 and pressed the mode button on the motherboard. It tells me JC-1 instead of the usual HD which is the first menu in settings. JC-1 meant jam in column 1. I had to unjam the motor and let it home itself in order to access the service mode. In part 2 I set prices nd test vend.