Baby PacMan Pin/Vid Question

tomsav

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I have a baby pacman pin/video game that is close to working.. Game powers up and playfield lights come on and go into attract mode. I can run the game through all the diagnostic modes, lamp, solenoid but the issue appears to be on the transmit and receive mode.. Attached is a picture.

All boards have been tested and are working fine, so Im thinking it's a communication issue between the boards (MPU and Vidot)..

Anyone have an idea what this issue may be and how I can fix it?

Thanks!!!!
Tom
 

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Repin the data transmission connector between the MPU and vidiot board. Those number should match on both sides. Right now you have no numbers on the right side.

Reference here:

http://www.pinrepair.com/bally/babypac.htm
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Here is the connector harness needed to make the communications test work between the MPU and Vidiot board:

VJ1 pin 3 - MPU J2 pin 9 #
VJ1 pin 4 - MPU J2 pin 8 #
VJ1 pin 5 - MPU J1 pin 5
VJ1 pin 6 - MPU J1 pin 6
VJ1 pin 7 - MPU J1 pin 28
VJ1 pin 8 - MPU J1 pin 27
VJ1 pin 9 - MPU J1 pin 26
VJ1 pin 10 - MPU J1 pin 25
VJ1 pin 11 - MPU J1 pin 23
VJ1 pin 12 - MPU J1 pin 22
VJ1 pin 13 - MPU J1 pin 21
VJ1 pin 14 - MPU J1 pin 20*
VJ1 pin 15 - MPU J1 pin 7
VJ1 pin 16 - MPU J2 pin 12
VJ1 pin 17 - MPU J2 pin 11
VJ1 pin 19 - MPU J2 pin 13
VJ1 pin 20 - MPU J2 pin 10
VJ1 pin 22 KEY
VJ1 pin 23 - MPU J2 pin 14
VJ1 pin 24 - MPU J2 pin 9 #
VJ1 pin 25 - MPU J2 pin 15
VJ1 pin 26 - MPU J2 pin 8 #
 
Last edited:
Thanks! Never repined before but the diagram you provided will really help.

Im thinking I would put new connectors and wires in, dont want to mess with the old stuff..

Would you know where I could purchase that?

Thanks again!
 
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