Quoted from jedi42:- the flippers work, the kick out hole works and lights up (and scores properly), and the ball eject works
This points to no single issue. The flippers are on the same end of the circuit as most the other things. The lights are on a different circuit altogether.
There is no tilt relay on this game.
Lets look at the lights first, since they are the easiest. Look in the lower left corner of your schematic, area 2 and 3 A. The lights are controlled by the following:
Lock relay and fuse. That's it.
Lock relay: The switch with the G-Y-W wire on one side and the Blue-Y-W wire on the other. Make sure this relay is pulling in and that switch is clean and making good contact. Jumper it to be sure. Next is the fuse.
Quoted from jedi42:At first I thought this must be a blown fuse, but all 5 of them seem OK.
Seems OK means nothing. Jumper the connector. This will tell you in short order if either the fuse or the notoriously bad holder is no good. They can look fine and not be fine. If the jumper fixes, then check the fuse with an ohm meter. PULL IT OUT and ohm it out. Don't leave it in place.
Regarding the PF:
Get a better reading on the symptoms - Make a list, the pop bumper pops, but doesn't score. This rollover does nothing. That kicker kicks but doesn't score.
Also, double, triple check your jones plugs. If you haven't cleaned them up yet, go after them with a dremel and a wire wheel or sandpaper or a wire brush. Random unrelated problems are often jones plug related.