You are this close to the point of you having to UN-install that coin comparitor harness and manually checking each wired pin for continuity.Ĭhances are that one of the ground wires are not in continuity and causing the error. It's very possible that one of them has internally broken and they is hanging by only the vinyl wire covering.

Make sure every single wire (Mostly orange) are fully inserted into their respective housing connectors that are around the coin comparitor. Now your error.what is happening is that the MPU is sensing a fault with the coin comparitor, coin in optics circuit board, and/or it's wiring harnesses. If it does, then your door optic sensors are okay. The display should go out momentarily, then come back on. On top of the 'Play 3 Credits' button on the reel glass display, watch the 'Coins Played' display closely as you close the door.