SC Tables
SM Appendix 4-33 D037/D038/D040/D041
Appendix:
Service Call
Conditions
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
When the fusing unit is not running in the ready condition, the pressure
roller fusing lamp keeps ON full power for 250 seconds or more.
 Broken Pressure roller fusing lamp
1. Replace the pressure roller fusing lamp.
2. Replace the PSU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller thermister error 4
The temperature measured by the pressure roller thermistor (end) does
not reach 0 °C for 20 seconds.
 Loose connection of pressure roller thermistor (end)
 Defective pressure roller thermistor (end)
Related SC code: SC 541
571 A
1. Check that the pressure roller thermistor (end) is firmly connected.
2. Replace the pressure roller thermistor (end).
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller overheat 4 (software error)
The detected pressure roller temperature stays at 230°C or more for 1
second.
 Defective PSU
 Defective BCU
573 A
1. Replace the pressure roller thermistor (end).
2. Replace the PSU.
3. Replace the BCU.
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