Quoted from LTG:
Page D-9 and D-10 in the manual are your opto driver board pinouts.
LTG : )
Update on getting my LE up and running:
1. Coin door switch fixed: I removed the switch and tried a switch from LOTR which worked fine, so I knew I was dealing with a potentially bad switch. However, when I installed the JJPOTC switch in LOTR it worked. So, I'm guessing it was just a loose connection at the switch. Regardless, one more problem fixed.
2. All switches on column 9 now working. I have manually moved the disc connected to the BP motor and those 2 optos are working as well. So, I think all is well with switches.
3. Sadly, the BP is still not moving at all either in game mode or BP test mode. The motor is not bound up as I mentioned I can easily get the Pearl to move simply by manually rotating the disc which is connected to the rod and motor. I re-seated the connection on the board by the motor, the connector on the main board (J109)which I think is controlling the motor and one 2-pin (power connection, I think) connector coming off the motor and that little board. Not sure where to go next on this but at least I'm getting closer. Oddly, at one point when I was manually turning that disc the motor seemed to work for about 20 seconds. It seemed slow. Could I have created a little energy by turning that disc that then powered the motor for a moment or is that some evidence that the motor is getting some power? I have a suspicion that there is either something wrong with the motor or with power getting to it but not sure where to look next.
Also, just in case someone is wondering...I also ran could test of the pearl rock motor with the connector rod fully detached...no movement.