When your Ricoh machine displays this code, it means the controller board has timed out or failed to receive a response from the communication interface within the allotted time after powering on. This can be caused by:
The SC67310 error code you've mentioned seems to be related to a specific problem, but without more context or details about your printer model or the nature of the error, providing a precise solution can be challenging. However, I can offer some general advice on how to approach and potentially resolve Ricoh printer error codes:
If the error reappears, move to Step 2.
Inspect cables and harness: