Q: CK5085i With GSK 980TD CNC controller, while the program runs to M03 S300, all the indicating lights on operation panel starts flickering about 2 to 4 times, and the screen turn to black, CNC system stop working, why?

A: There should be some output parts broken inside, please kindly check the power supply is in function or not, and check the ULN2803 IC inside the GSK980TD.