Ricoh Aficio SP C440DN Field Service Manual page 601

No. Type
690 D 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
• 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 unit.
4. Replace the BCU.
SC8xx: Overall System
No. Type
816 CTL Energy saving I/O sub-system error
D
The energy saving I/O sub-system detects an error.
• Controller board defective
Replace the controller board.
No. Type
840-00 B
Details (Symptom, Possible Cause, Troubleshooting Procedures)
buffer shortage.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting)
EEPROM error 1: EEPROM access
• During the I/O processing, a read error occurred. The 3rd reading
failure causes this SC code.
• During the I/O processing, a write error occurred.
• Defective EEPROM
SC Tables
CTL
599