Mostly unreliable microcontroller (I10) caused from logic condition weren’t consistent ready tests state [X(1,0) Y(1,1)]. They were reprogrammed before retested to be good units. There were 2 boards of damaged materials due to overvoltage and they were replaced with the new part. The no defect remaining units were checked state already test and retested to confirm that they are really good units. All units are passed and operate properly.