Have schematic but many labels missing under play field and inside cabinet. A few questions:
-Would someone know what the small stepper under the pf and next to the pitching motor does.
-Would someone have a picture of the cabinet relay identification labels.
-When a target is hit (single for instance), which relay is activated? Is there a specific relay for each target?
Thanks

Currieddog, tried doing that but faded wire colors are a problem. Also, the Williams schematic is very different from the Gottlieb schematics that I am familiar with. First time trying to read a Williams.

What do the numbers under the coils mean? For example, Hit has M 29 1100, Curve has Z 27 1000.
Thanks

I was able to locate the target scoring problems. Once a target is hit, a relay trips on the relay bank that controls the target light, and also redirects the circuit to control scoring, bell, and runner animation. The labels on the relay bank are confusing since they only indicate that they are the target light relays. In the tripped switch position the lower switch contacts for three of the targets were not making contact. Once adjusted everything worked correctly.

One final question. There is a small continuous stepper under the playfield with a label on it indicating it is the Mix Unit. Would someone know what this unit does. Is it possible it controls the magnet that deflects the pitched ball for curves? Difficult to trace it based on wire colors.
Thanks