(Topic ID: 271523)

Baby Pac Wiring issue

By JT-Pinball

1 year ago



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  • 3 posts
  • 2 Pinsiders participating
  • Latest reply 1 year ago by JT-Pinball
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#1 1 year ago

Ok so I am workimy on fixing a Baby Pac. The 43v to the MPU comes thru the playfield connector. That grey wire intersects the playfied where exactly? I have brown grey and blue wires going to the playfied fuse block. I have yellow grey and blue going out from the fuse block. The yellow is the 43v bus wire and I have continuity to the solonoids. But the game wont boot. If I disconect the grey wire that is conected to the switched Imum I have continuity to A4J4-15 that supplies 43v to MPU. But I dont have continuity between the yellow for thw solonoids and the grey for the illumination.

#3 1 year ago
Quoted from BigAl56:

Baby pacman is different from previous Bally games. Instead of 43v it uses the A light bus for the zero crossing detector. That comes from J4-15 on the MPU. It's a Grey wire per the schematic and routs to the A switched lighting bus on the playfield.

This makes total sense as to what is going on. So... The question us why wont the game boot unless I give the mpu 43v??

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