Yes, on the Mars. It's what I said before, if it's set to "Always enable," then the validator won't stop taking bills when the changer shuts down. If this switch is already in the correct position, the small interface box with Etowah Valley's name on it is probably bad. If you turn the switch off and the validator quits working, you may have the wrong chip in the controller. Someone may have skipped changing out the chip and went for a quick fix.hopingforthebest said:What does switch 6 (no the Mars I assume) control?