Ricoh MPC 2800 AT-C2 Field Service Manual page 414

3. Appendix: Service Call Conditions
No. Type
442 D
3
No. Type
443 C
58
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Image transfer belt contact motor error
The image transfer belt contact sensor does not detect the movement of actuator at
the sensor while the polygon motor rotates.
• Dirty image transfer belt contact sensor
• Defective image transfer belt contact motor
• Disconnected connector of image transfer belt contact sensor or motor
• Disconnected cable
1. Replace the image transfer belt contact sensor.
2. Replace the image transfer belt contact motor.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Image transfer unit error
The machine detects the encoder sensor error.
• Defective encoder sensor
• Image transfer unit installation error
• Defective image transfer unit motor
1. Check if the image transfer unit is correctly set.
2. Replace the image transfer unit motor.
3. Replace the image transfer unit.