Ricoh Z-P2 Field Service Manual page 590

6. Troubleshooting
No. Type
544 A
No. Type
545 A
588
Details (Symptom, Possible Cause, Troubleshooting Procedures)
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).
Details (Symptom, Possible Cause, Troubleshooting Procedures)
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.