Ricoh OR-C1 Field Service Manual page 436

3. Appendix: Service Call Conditions
No. Type
3
687 D
No. Type
690 D
78
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Memory address (PER) command error
The BCU did not receive a memory address command from the controller with the
prescribed time once the paper reached the registration sensor.
• Harness connection at BCU, Controller board loose or broken
• Defective HDD
• Defective BCU
• Defective Controller Board
1. Check if the controller board is firmly connected to the BCU.
2. Replace the controller board.
3. Replace the HDD
4. Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
GAVD communication error
• The I2C bus device ID is not identified during initialization.
• A device-status error occurs during I2C bus communication.
• The I2C bus communication is not established due to an error other than a
buffer shortage.
• Loose connection
• Defective BCU
• Defective LD controller board
1. Turn the main switch off and on.
2. Check the cable connection.
3. Replace the laser optics-housing unit.
4. Replace the BCU board.