New Life Games Tech Forums

I have a Bally’s S6000 Slot Machine and it has a MEI bill acceptor. The problem I'm having is it's not taking bills. The green light in front of unit is flashing and a solid light is normal. I looked on the MEI web site on troubleshooting and it said green flashing is disabled by machine interface. And I would need to fix the machine interface. My bill acceptor model number is SC 6604 (opto) I know that if a P was after the number I would have to have a chip in the head. Mine doesn't have a chip I even tried a flash card that I downloaded on the MEI web site and that didn't work. So is there anyone out there that could tell how to fix this problem I would really appreciate it. Thanks