whoops, i did not scroll to the top

anyway, mine does not have a button, digi, what happens when you push the button ?
Maybe its some kind of service button ? i have 3 coin switches, and when i flip switch 1, it gives alot of credits without the use of the actual counter.
the other two registers the pulses to the counter.
maybe its for service personel that need to test the game without upping the counter so that the counter matches the real coins inserted ?
anyway, Its in every zacc manual how to adjust individual coinmechs, and also there are sheets of coininsert labels in every manual i have seen.