Plug it back in and restart the machine to see if the communication re-establishes.
If the error persists, it may be "latched" in the system memory. You can clear these states through the Service Program (SP) mode. Enter SP Mode Clear Modes , and hold the Clear/Stop button for 3 seconds. : On the screen, select Execute Reset SP 5-810-001 (SC Reset) : Turn the main power off and then back on. 3. Check Physical Connections sc67310 ricoh error free