Ricoh MPC 2800 AT-C2 Field Service Manual page 412

3. Appendix: Service Call Conditions
No. Type
383 C
3
No. Type
396 D
397 D
398 D
399 D
- -
56
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Drum gear position sensor error: Y
The machine does not detect the drum position signal for 3 seconds at the drum
phase adjustment.
• Dirty or defective drum gear position sensor
1. Replace the drum gear position sensor.
2. Replace the PCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Drum/Development motor error: K
Drum/Development motor error: M
Drum/Development motor error: C
Drum/Development motor error: Y
The machine detects a High signal from the drum/development motor for 2 seconds
after the drum/development motor turned on.
• Overload on the drum/development motor
• Defective drum/development motor
• Defective harness
• Shorted 24 V fuse on the PSU
• Defective interlock system
1. Check or replace the harness.
2. Replace the drum/development motor.
3. Replace the 24V fuse on the PSU.