Ricoh M065 Service Manual page 343

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller fusing lamp overheat 2 (software error)
The detected pressure roller temperature stays at 230°C or more for 1
second.
Defective PSU
553 A
Defective BCU
1. Replace the heating roller thermistor (end).
2. Replace the PSU.
3. Replace the BCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller fusing lamp overheat 2 (hardware error)
The heating roller thermistor (end) detects 250°C or more.
Defective heating roller thermistor (end)
Defective PSU
554 A
Defective BCU
Defective fusing control system
1. Replace the heating roller thermistor (end).
2. Replace the PSU.
3. Replace the BCU.
SM Appendix 3-33
SC Tables
M065/M066