The error indicates that the operation panel cannot communicate effectively with the main controller board. Common reasons include:
: The parameter for the Smart Operation Panel may have been disabled. Access the Service Mode (SP Mode) to check: Enter Service Mode (typically by pressing Clear Modes right arrow right arrow Navigate to SP5-748-201 (OpePanel Connection). Ensure the value is set to (Connected). If it is , change it to System Reset Ricoh SC Reset tool sc67310 ricoh error free