Ricoh D037 Service Manual page 449

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
1. Check if the thermopile is firmly connected.
2. Replace the thermopile.
3. Replace the heating roller lamp.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller fusing lamp overheat 1 (software error)
The detected fusing temperature stays at 230°C for 1 second.
Defective PSU
543 A
Defective BCU
Related SC code: SC 553
1. Replace the PSU.
2. Replace the BCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller fusing lamp overheat 1 (hardware error)
During stand-by mode or a print job, the detected heating roller
temperature reaches 250 °C.
Defective PSU
544 A
Defective BCU
Defective fusing control system
Related SC code: SC 543
1. Replace the PSU.
2. Replace the BCU.
SM Appendix 4-27
SC Tables
D037/D038/D040/D041