Ricoh D143 Field Service Manual page 795

No. Type
The IPU detects LDB error a few times consecutively when LDB unit turns on after
LDB initialization.
• Worn-out LD
• Disconnected or broken harness of the LD
1. Replace the harness of the LD.
2. Replace the laser optics housing unit.
3. Replace the IPU.
No. Type
GAVD communication error
The 12C bus device ID is not identified during initialization.
A device-status error occurs during 12C bus communication.
The 12C bus communication is not established due to an error other than a buffer
shortage.
• Loose connection
270 D
• Defective GAVD
• Defective BCU
• Defective controller board
1. Turn the power switch off and on.
2. Check the cable connection.
3. Replace the laser optics-housing unit.
4. Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Service Call
793