Ricoh D104 Field Service Manual page 597

No. Type
Heating roller warm-up error 2
• The heating roller temperature does not reach the ready temperature for 65
seconds after the fusing unit has rotated.
• The heating roller temperature does not reach 100°C for 25 seconds in the
low temperature condition after the heating lamp on.
• Dirty or defective thermistor (end)
552 A
• Heating roller fusing lamp broken
• Defected thermostat
• Defective heating roller fusing lamp
1. Check if the heating roller thermistor (end) is firmly connected.
2. Replace the heating roller thermistor (end).
3. Replace the heating roller fusing lamp.
No. Type
Heating roller fusing lamp overheat 2 (software error)
The detected pressure roller temperature stays at 230°C or more for 1 second.
• Defective PSU
553 A
• Defective BCU
1. Replace the PSU.
2. Replace the BCU.
No. Type
Heating roller fusing lamp overheat 2 (hardware error)
The heating roller thermistor (end) detects 250°C or more.
• Defective PSU
554 A
• Defective BCU
• Defective fusing control system
1. Replace the PSU.
2. Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC Tables
6
595