Ricoh D025 Service Manual page 492

SC Tables
No. Type
Pressure roller warm-up error
After the main switch is turned on or the door is closed, the pressure
roller temperature does not reach the ready temperature within 70
seconds during fusing unit warm-up.
552 A
Related SC code: SC 542
1.
2.
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.
D023/D025
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller fusing lamp broken
Check if the pressure roller thermistor is firmly connected.
Replace the pressure roller fusing lamp.
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.
3-40 SM Appendix