IGT S2000 Terminal Disabled

[ahuff823]

I have an S200 that whenever the machine is not played it stays up without any issues, but once the game gets played it continuously goes into a terminal disabled, we have replaced the backplane board, stepper comm board on power supply, we are using Paltronics MIC cards for our progressive communication and we have replaced the MIC cards, the wire harness from the MIC card to the stepper comm board, CPU, all cables that go from comm board to backplane board. we have almost replaced literally everything in the machine dealing with communication from the game to MIC card and its only when its played is when the machine faults,

please any help would be appreciated, this is the only game we have on the floor that does this.