Ricoh MPC 2800 AT-C2, Field Service Manual, Page: 447 / 856

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
770 B
Shift motor error
The shift motor HP sensor does not detect any change for 1.86 seconds after the
shift motor has turned on at power on or during its operation.
• Defective shift motor
• Defective shift motor HP sensor
1. Check the connections to the shift motor and the shift motor HP sensor.
2. Defective shift motor or the shift motor HP sensor.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
791 D
Bridge unit error
The machine recognizes the finisher, but does not recognize the bridge unit.
• Defective connector
• Broken harness
1. Check the connections between the bridge unit and the machine.
2. Install a new bridge unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
792 B
Finisher error
The machine does not recognize the finisher, but recognizes the bridge unit.
• Defective connector
• Defective harness
• Incorrect installation
1. Check the connections between the finisher and the machine.
2. Install a new finisher.
SC Tables
91
3