Ricoh D025 Service Manual page 493

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller fusing lamp overheat (hardware error)
The pressure roller thermistor detects 250°C or more.
Defective PSU
Defective IOB
Defective BICU
554 A
Defective fusing control system
1. Replace the pressure roller thermistor.
2. Replace the PSU.
3. Replace the IOB.
4. Replace the BICU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller lamp consecutive full power 2
When the fusing unit is not running in the ready condition, the pressure
roller-fusing lamp keeps ON full power for 8 seconds or more.
555 A
Broken pressure roller fusing lamp
Related SC code: SC 545
1. Replace the pressure roller fusing lamp.
2. Replace the PSU.
SM Appendix 3-41
SC Tables
D023/D025