Functional problem code SC542-00

Enter SP mode > Clear (yellow) button > 1 0 7 > and press and hold the Stop (red) button for 3 seconds.
Then switch off and on the machine.
If error still there, probably you have a problem in the fusing unit.
Possible causes are:
Thermistor defective;
One of the fusing lamp is open circuit;
Thermofuse open;
Fusing unit connector defective; and
Power supply board.
Good luck and please rate me, thanks.