Bear with me-this is my first Williams EM project.
I’m trying to figure out how things work with the Ball Index Relay. From the schematic it looks like at game start Impulse A on the score motor should activate the 100 point relay in the backbox which in turn should activate the Ball Index Relay. Mine does not although Impulse A does reset the ones and tens. In game play scoring a 100 point rollover or other feature will trigger the 100 point relay and Ball Index. I’m pretty sure this is not correct.
When ball 1 drains the Ball Index Relay turns off. Looking at the schematic I don’t see any way it can stay on. Is this normal and if so how does Ball Index get turned on again?
Given the switches it does look like it has to turn off from Score Motor 3A and the Outhole relay but once again I don’t see how it turns back on.
Are there any Williams EM experts that can help me?