Buenos dias tenes problemas con la unidad de fusion verifica lamparas thermistor fusibles termicos.Para resetear entra en modo SP apagas y encendes la maquina. SC542: Fusing temperature warming-up error -Definition- [A] The fusing temperature does not reach the fusing standby temperature within 5 minutes after the main power switch is turned on. - Possible causes - • Fusing thermistor defective or out of position • Fusing lamp open • Fusing thermofuse open • BICU defective • Power supply board defective • Poor fusing unit connection