When I turn on my pin, the display says press advance for test report. When I do, I get "check switch" upper lock lower, upper lock mid, and upper lock upper. The machine seems to play fine and all balls get launched when you have locked all balls from the drawbridge. What should I be looking for? Upon initial inspection, all wires are connected in this area, I don't see anything "jumping" at me.

According to the manual, if a switch doesn't get activated within a specified amount of time lapse, it gets noted as having a possible problem. My problem was a lazy flipper which was not allowing me to get the ball up the drawbridge, hence the multiball lock was not getting used. I have rebuilt the flippers and now I can lock the balls up the drawbridge and the switch has been activated. Now the message does not come up upon turning the machine on since the switches have been activated.