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4. Troubleshooting
• 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.
• Disconnected thermistor
• Defective harness connection
4
1. Check the harness connection of the thermistor.
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2. Replace the fusing unit.
• Execute "Fuser SC Reset" with SOM (printer models) or "Engine Maintenance Menu" (MF
model) 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.
• Defective thermistor
• Incorrect power supply input at the main power socket
• Defective fusing lamp
542
1. Check the voltage of the wall outlet.
2. Replace the fusing unit
3. Replace the fusing lamp.
• Execute "Fuser SC Reset" with SOM (printer models) or "Engine Maintenance Menu" (MF
model) to recover the machine after completing the recovery procedure. Otherwise, the
machine continues to issue this SC code and cannot be operated.
High Temperature Detection Error
543
This SC is issued if one of following conditions occurs:
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