Appendix: Troubleshooting Guide
26
1. Check or replace the motor harness.
2. Replace the LSU fan motor.
Fusing Fan Motor Error
A LOCK signal is not detected for more than ten seconds while the motor START
signal is on and if this error occurs twice consecutively, this SC is issued.
531
Disconnected or defective motor harness.
Defective LSU fan motor
1. Check or replace the motor harness.
2. Replace the fusing fan motor.
Thermistor Error
The thermistor output is less than 0°C for 7 seconds.
541
Disconnected thermistor
Defective harness connection
1. Check the harness connection of the thermistor.
2. Replace the fusing unit.
Execute "Engine Maintenance Menu" to recover the machine after
completing the recovery procedure. Otherwise, the machine continues to
issue this SC code and cannot be operated.
Print Ready Temperature Error
The heating roller temperature increase during a set time is not correct.
The fusing temperature does not reach the print ready temperature within a
set time after the fusing lamp has turned on.
542
Defective thermistor
Incorrect power supply input at the main power socket
Defective fusing lamp
1. Check the voltage of the wall outlet.
2. Replace the fusing unit
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