Ricoh D025 Service Manual page 489

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
Defective IOB
543 A
Defective BICU
Related SC code: SC 553
1. Replace the PSU.
2. Replace the IOB.
3. Replace the BICU.
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
Defective IOB
544 A
Defective BICU
Defective fusing control system
Related SC code: SC 543
1. Replace the PSU.
2. Replace the IOB.
3. Replace the BICU.
SM Appendix 3-37
SC Tables
D023/D025