Hi WhiskeyTango +
another post to come about troubleshooting - this one only is theory.
The first JPG is from another topic - schematics are drawn abstract --- see the "pink / rosa" wiring --- reality in the pin is A or B or C.
To understand the drawing of an schematics we must always have in mind that Bally and Williams and Gottlieb schematics are drawn in a very specific state: A game for ONE Player has been started means all Score-Drums are resetted, Bonus-Ladder is resetted, if there is a Relay-Bank it then is resetted, Interlock-Relays (like the AX-Relay) are moved to be "in play". (We must accept) THEN the pin is toggled-off - the main power cord is unplugged. So some relays that are steady pulling when the pin is in play: THESE Relays loose current as the pin is toggled-off - these relays "let go" and the switches on THESE Relays are drown "Relay is not pulling". We must accept the fact that the schematics is drawn in this "rather strange" state.
Easy to understand are "my green switches 1,2,3,4,5" - relays are not pulling and the Motor is not running, example "my 5" --- the "Q-Game-Over-Relay is constantly pulling when the pin has current and the pin is in state "Game-Over" and in state "Game-Over" the switch green-5 would be / is open as the relay is pulling --- BUT the schematics is drawn "unplugged, NO current there - so the Q-Relay is not pulling so green-5 is closed".
Tricky to understand is green-6 because the AX-Relay is an Interlock-Type Relay - having two coils. When the new game was started then the AX-Relay moves and at end of the Start-Up the AX-Reset-Coil fires and moves the relay into "state ready to play, as shown in the JPG" --- toggling-off / unpluggling has no effect - the AX-Relay is in state "in play" and stays in state "in play".
Tricky to understand is green-7 because the H-Tilt-Hold-Relay was made pulling when we started the new game --- pulling, pulling, pulling --- but then the pin has been toggled-off / unplugged - this simple relay having only one coil let go (toggling-off means no more current) - the relay let go and switch-green-7 is shown "NOT in play".
Look in the first JPG at my dark-red wiring - when the pin is toggled-on and a game has started and the AX-Relay is resetted (switch-green-6 is as shown in the JPG) AND the H-Tilt-Hold-Relay is activated and keeps-on steady pulling and so switch-green-7 is "moved, other than shown in the JPG": Along the dark-red wiring: The Playfield-stuff has power-side connection. Also the H-Relay has established along pink / rosa wiring its Self-Hold circuitry due to "moved switch-green-7".
TRY this: Toggle-on the pin - then manually activate (press the armature) H-Relay --- the H-Relay must stay pulling forever due to the fact that You manually have moved "Switch-green-7".
Second JPG - the Z1- and Z2-Reset-Relays: Early at start-up the S-Start-Relay is pulling and the AX-Relay is moved --- along the green line the pin happily steps on the Player-Unit (as the Z1- / Z2-Relays are not yet pulling: along the pink / rosa line) --- the Player-Unit is stepped and stepped - reaching pos-20 - the Z1-Relay pulls-in and opens its switch. Greetings Rolf