No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
544 A Heating roller fusing lamp overheat 1 (hardware error)
During stand-by mode or a print job, the detected heating roller temperature
reaches 250 °C.
• Defective PSU
• Defective BCU
• Defective heating roller thermistor (end)
• Defective fusing control system
1. Replace the PSU.
2. Replace the BCU.
3. Replace the heating roller thermistor (end).
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
545 A Heating roller fusing lamp consecutive full power 1
When the fusing unit is not running in the ready condition, the heating roller fusing
lamp keeps on full power for 30 seconds.
• Broken heating roller thermostat
• Broken heating roller fusing lamp
1. Replace the heating roller thermostat.
2. Replace the heating roller fusing lamp.
6. Troubleshooting
588