Ricoh MPC 2800 AT-C2 Mode D'emploi page 426

3. Appendix: Service Call Conditions
No. Type
No. Type
3
460 D
No. Type
490 D
No. Type
491 D
58
Details (Symptom, Possible Cause, Troubleshooting Procedures)
3. Replace the paper transfer unit contact motor.
4. Replace the +24V fuse on the PSU.
5. Replace the IOB.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Separation power pack output error
An interrupt checks the status of the power pack every 20 ms. This SC is issued if the
BICU detects a short in the power pack 10 times at D(ac).
• Damaged insulation on the high-voltage supply cable
• Damaged insulation around the high-voltage power supply.
1. Replace the high-voltage supply cable.
2. Replace the high-voltage power supply unit.
3. Replace the IOB.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Toner transport motor error
The LOCK signal is not detected for 2 seconds when the transport motor turns on.
• Toner transport motor overload
• Disconnected or broken harness
• Defective toner transport motor
• Opened +24V fuse on the PSU
• Defective interlock switch
1. Check or replace the harness.
2. Replace the toner transport motor.
3. Replace the +24V fuse on the PSU.
4. Replace the interlock switch.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
High voltage power: Drum/ development bias output error