Quoted from rolf_martin_062:Under what condition(s) this lite lites up ?
The bottom of the schematic shows that the "Hit Start When Lit" light comes on when:
- the C/Extra Ball relay is not active AND
- the Score Motor 3F switch is closed AND
- the A/Alternating relay switch is closed
What makes this an uncommon event is that the Score Motor and Alternating relay switches are combined. The Score Motor 3F switch I believe only closes in one of the three home positions of the Score Motor so already that light will be off 2/3 of the time. The A/Alternating relay is fired periodically by the 0-9 unit. Perhaps it fires for every other digit or it could be for just one digit. You'd need to examine the 0-9 unit to be sure. So in the best case the light would be on (1/3 * 1/2) or 1/6 of the time and in the worst case it would be (1/3 * 1/10) or 1/30 of the time that the Extra Ball relay is not active.
Quoted from rolf_martin_062:Can we make an Extraball by loosing the ball through one of the Outlanes "A or B or C or D" ? - https://www.ipdb.org/showpic.pl?id=635&picno=34773
It looks like an extra ball is only awarded if the Roto Unit is in the correct position and the #5 Target or #5 Bottom Rollover switch close. It's not clear however where those two switches are.
/Mark
