531
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.
• Disconnected or defective motor harness.
• Defective LSU fan motor
1. Check or replace the motor harness.
2. Replace the fusing fan motor.
541
Thermistor Error
The thermistor output is less than 0°C for 7 seconds.
• 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 printer after completing the recovery
procedure. Otherwise, the printer continues to issue this SC code and cannot be operated.
542
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.
• 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
3. Replace the fusing lamp.
• Execute "Engine Maintenance Menu" to recover the printer after completing the recovery
procedure. Otherwise, the printer continues to issue this SC code and cannot be operated.
Service Call Conditions
19
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