Quoted from sbmania:
Looking for some advice. I'm working on a TZ and neither the clock nor the gumball will spin in test. The clock's optos all register manually in test but the hands wont turn either forward or backward. Neither will the gumball motor spin in test. Before I go all crazy searching for a solution, any ideas on what might be causing both errors. Possibly they are related?
I cant be of too much help, but to rule out something very simple I once never knew about... is the coin door closed when youre running the test?