Author Topic: Bally EM - '69 Bowl-O  (Read 1376 times)

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Offline Retropin

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Re: Bally EM - '69 Bowl-O
« Reply #15 on: December 06, 2012, 11:44:09 PM »
Mmm.. i dont seem to be getting all replise to the treads im active in.. missed your post Millsy.

Anyway... have the cct now.

CLUTCH TRIP..
will have 1 switch on it that must be closed ( Orange/white).. this switch is in parallel to a switch on COIN RELAY (White/Black).. this too must be closed, but for Coin Relay switch to be closed 3C on the SCORE motor MUST be open ( it will pulse as it turns.. if it doesnt pulse, Coin relay wont close and it throws the cct out).

You also need to look at the cct of BROWN /WHITE on RESET motor.. it goes through  Reset Motor #1 & #2, Clutch trip and Strike Advance.... Brown/White on all these should be OPEN... if one of these is never opening then cct will never complete.

Thats basically all that controls the CLUTCH as far as i can see.

Check operation of all these switches... also do it with game turning over as yopu can often see if something isnt pulling in far enough... the metal plates that pull in sometimes go off centre at the top where they go through the plate above the coil... a good working one should move freely, if its a bit tight, its off and its a mechanical adjustment to get it to pull in again properly.

...Good luck mate... ^^^