Ricoh D143 Field Service Manual page 833

No. Type
EEPROM communication error
Retry of EEPROM communication fails three times after the machine has detected
the EEPROM error.
669 D
• Caused by noise
Turn the main power switch off and on.
No. Type
Engine start up error
The BCU fails to respond within the prescribed time when the machine is turned
on.
670 D
Connections between BCU and controller board are loose, disconnected, or
damaged.
1. Replace the BCU
2. Replace the controller board
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Service Call
831