Williams Firepower board set repair overview and test

[@waynegram8907]

DR PINBALL, some pinball games ROM chips has a start up problem that while shut the game off if any of the playfield coils are locked close or shorted out. What is this start up program called that checks if any coil is locked on/shorted out? this prevents damaging the solenoid pcb board components like the driver chips and PIA chips. I don't know what the software program is called in the ROM chips its like a test program during only start up