I have the same game and have been looking for a schematic. Where did you find one?
I am going to assume all of the other bulbs are coming on......
As for the lights. Like above....
1. Check the bulbs.
2. Clean stepper contacts.
3. Check the lamp sockets for corrosion. I found this on a couple machines that sat for a while. You will see a white build up around the sockets.
Post edited by eckertsbrew : Spelling