Ricoh D104 Field Service Manual page 592

6. Troubleshooting
No. Type
534 D
6
No. Type
535 D
590
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Fusing rear fan error
The motor lock signal error is detected for 10 seconds after the motor lock signal
was first detected.
• Defective fusing rear fan
• Disconnected or defective harness
• Defective DRB
• Defective BCU
1. Check or replace the harness.
2. Replace the fusing rear fan.
3. Replace the DRB.
4. Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Controller box fan error
The motor lock signal error is detected for 10 seconds after the motor lock signal
was first detected.
• Defective controller box fan
• Disconnected or defective harness
• Defective BCU
1. Check or replace the harness.
2. Replace the controller box fan.
3. Replace the BCU.