SC Table
SM 4-37 G133
Trouble-
shooting
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller overheat 1 (software error)
The detected fusing temperature stays at 215°C for 1 second.
Defective PSU
Defective IOB
Defective EGB
Related SC code: SC 553
543 A
1. Replace the PSU.
2. Replace the IOB.
3. Replace the EGB.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller overheat 1 (hardware error)
During stand-by mode or a print job, the detected heating roller
temperature reaches 220 °C.
Defective PSU
Defective IOB
Defective EGB
Defective fusing control system
Related SC code: SC 543
544 A
1. Replace the PSU.
2. Replace the IOB.
3. Replace the EGB.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Zero cross error 547 D
The zero cross signal is detected three times even though the
heater relay is off when turning on the main power.
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