Ricoh RN-MF1 Service Manual page 123

High temperature error (Software)
• The detected temperature stays at 225°C for 1 second, and this consecutively occurs 10
times.
• Defective ECB
• Defective PSU
543
1. Replace the ECB
2. Replace the PSU
• Execute "Fuser SC Reset" to recover the machine after completing the recovery procedure.
Otherwise, the machine continues to issue this SC code and cannot be operated.
High temperature error (Hardware)
• During stand-by mode or a print job, the detected heating roller temperature reaches 250°
C.
• Defective ECB
• Defective PSU
544
1. Replace the ECB
2. Replace the PSU
• Execute "Fuser SC Reset" to recover the machine after completing the recovery procedure.
Otherwise, the machine continues to issue this SC code and cannot be operated.
Fusing Lamp Overheat Error
The fusing lamps remained ON at full capacity for more than 9 s after the fusing temperature
attains reload temperature.
• Deformed thermistor
• Thermistor not in the correct position
545
• Defective fusing lamp
1. Replace the fusing unit.
2. Replace the fusing lamp.
• Execute "Fuser SC Reset" to recover the machine after completing the recovery procedure.
Otherwise, the machine continues to issue this SC code and cannot be operated.
Service Call Conditions
6
121