So it's been a couple of years since I last worked on an EM but that's more experience than my buddy, so I elected to help him out. He does have the manual and schematic. His Big Brave gets hung up in the start up after the score reels have zero'd out and players unit has reset(I think.) Then it continually resets the target bank and Bonus Unit repeatedly. The zero switch on the Bonus Unit is closed with continuity and all the switches/targets are reset but the motor keeps turning without continuing thru the start up sequence. I've cleaned the switches on motor 4c and U relay and they all appear to be in the appropriate position and open or close when actuated. I have the PF up leaning against the head with a biz card keeping the ball trough switch closed.
I've messed around with this for a couple of hours and the only thing I've learned is Working on EM's is like a 2nd language, Use it or lose it!
Any direction/instruction would be appreciated by me and my friend!