Quoted from Kickout:Sudsy7 - Thanks I understand that now.
1. when the left flipper button is push the lights come on, and the center target begins to move back and forth. Not sure this should be happening. Circuit for this is located at G8
look around schem C1 ... what howard posted above. When you close the left flipper button switch, the transformer is powered. That causes the lock relay to power and stay powered forever (unless someone opens a "knock-off sw"). Then back to the 120V circuits and you'll see a couple lock relay switches in series that will keep the power on the transformer.
the rest of the switches in that area mean you can also wake the game up depositing coins or pushing the replay button if you have credits.
per schem B5, the game over light comes on when both the game over relay AND the tilt relay are tripped. Note when both are tripped, the tilt light is not turned on.
the tilt trip is interesting. When you first wake up the game with the lock relay unpowered, the tilt relay should trip, but it's a race condition whether that happens before the lock relay powers and opens the switch that is completing the circuit.
it should work because the coil operating the tilt is different (construction/physically/part number) from the one operating the lock relay ... the tilt one works faster so power can be applied to both coils at the same time and tilt trips reliably.
Quoted from Kickout:
3. if i trip the Game Over Re. the motor continues to run, will not stop until i latch the Game Over Re. Circuit for this is also at G8.
Am i looking in right direction?
the score motor is at schem G-3. When the game over relay is tripped but the tilt relay isn't, the score motor runs.
the non-obvious thing in all this is when the game is over, the tilt relay should trip. The player doesn't know that because the tilt light doesn't turn on. If something isn't working or you manually trip some relays, you can put the game in a state which it shouldn't be in and the behavior won't make sense.
the game relay (different from the game over relay) trips when the 1 or 10 point relays power (player has shot a ball), and that enables the replay button once the lock relay has powered. The game relay also trips when the game over relay trips and a score motor switch closes briefly.
so IF you wake up the game with the left flipper button but for whatever reason the game relay hasn't tripped, the replay button will not work. If that's the state you are in, see if the tilt relay has tripped.
this has been a long-winded ramble of what the folks above have said