Getting a 985, 106 & 110 fault on 1 car of an 8 car group. Suspect CPU board or possible software issue.

The car will not run on inspection, does not pick brake and will not move when attempting to perform a hoistway learn. If you put this CPU board in another car, it causes the same issues and gets the same faults. 

My concern is I can only get a JC5 replacement CPU board to replace the JC3. Will this cause any issues with DSP board on this car or with the other JC3 CPU boards in the other controllers.

Thanks.