Ricoh Aficio SP C440DN Field Service Manual page 584

6. Troubleshooting
No. Type
520 B
521 B
522 B
- -
No. Type
530 D
531 D
582
Details (Symptom, Possible Cause, Troubleshooting Procedures)
2nd paper tray cooling fan error (optional paper feed unit)
3rd paper tray cooling fan error (optional paper feed unit)
4th paper tray cooling fan error (optional paper feed unit)
The motor lock signal error from the cooling fan is detected for 10 seconds after
turning on the cooling fan.
• Disconnected harness of the cooling fan
• Defective cooling fan
• Defective BCU
1. Check or replace the harness of the cooling fan.
2. Replace the cooling fan.
3. Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Development fan 1 error
Development fan 2 error
The motor lock signal error is detected for 10 seconds after the motor lock signal
was first detected.
• Defective development fan 1 or development fan 2
• Disconnected or defective harness
• Defective BCU
1. Check or replace the harness.
2. Replace the development fan 1 (SC530) or development fan 2 (SC531).
3. Replace the BCU.