Ricoh B230 Service Manual page 290

No. Type
Pressure roller fusing lamp overheat (software error)
The detected pressure roller temperature stays at 230°C or more for 1
second.
553 A
Related SC code: SC 543
1.
2.
3.
4.
No. Type
Pressure roller fusing lamp overheat (hardware error)
The pressure roller thermistor detects 250°C or more.
554 A
1.
2.
3.
4.
B230/B237
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective PSU
Defective IOB
Defective BICU
Replace the pressure roller thermistor.
Replace the PSU.
Replace the IOB.
Replace the BICU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective PSU
Defective IOB
Defective BICU
Defective fusing control system
Replace the pressure roller thermistor.
Replace the PSU.
Replace the IOB.
Replace the BICU.
4-50 SM