I recently bought a Williams Big Guns and have been troubleshooting an issue with the outer left lane kicker which does not function as designed. I've determined that the signal coming from J18 into pin 5 of the 7402 is always 'high'.. I feel like a bit of a noob but I am not sure where the signal off pin 3 on JP18 is coming from. I know the outer lane kicker on this machine is a 'Special Solenoid' meaning its not CPU controlled. Does this mean that the signal is coming directly from the AUX power board? I'm trying to work out what to diagnose next and am a bit lost right now...
Cheers for the help!