Sadly, I think you know just as much about that machine as anyone here. Are there any posts/connections on the coin door mech's that look like they should have wires attached? You also could try and trace the wires back to the motor or switch they are attached too and determine it from there?

Are their various coin settings on the game? Perhaps they might have something to do with that? Do other coins register, or just quarters?

AF, I had not found that yet on either of my EMs, so now I'm gunna have to look at that. But neither of the coin doors are working as an "on route" machine. Could you post a couple of pics and point out what to look at specifically if you have a game which is set up that way? Mid 70's WMS or mid 60's GTB?

WbN, if you figure anything out, I hope you are keeping meticulous notes and will post them. as I'm sure you are aware, there is not much knowledge out there on CCM's and anything more would be of great help to everybody. I'm also about to go look at a Beatniks and probably not buy it cause it's a CCM