SC Tables
D037/D038/D040/D041 4-30 SM Appendix
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
 Defective BCU
Related SC code: SC 543
553 A
1. Replace the heating roller thermistor.
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 detects 250°C or more.
 Defective PSU
 Defective BCU
 Defective fusing control system
554 A
1. Replace the heating roller thermistor.
2. Replace the PSU.
3. Replace the BCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating 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 130 seconds or more.
 Broken heating roller fusing lamp
555 A
Related SC code: SC 545
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