The specific panel connection setting ( SP5-748-201 ) may be set to "0" (Not Connected) instead of the required "1" (Connected). Recommended Troubleshooting Steps

When the main controller sends a data packet to the operation panel and does not receive the correct acknowledgment signal within a strict time limit (usually milliseconds), the CPU triggers SC67310. The machine immediately halts all mechanical functions to prevent data loss or hardware damage.

If the hard reboot fails, check the physical lines bridging the command center to the main hardware.

The "CATS module" (communication service) may fail to start if specific Service Mode settings are disabled.

If all passes, you’ve successfully fixed SC673-10 degrading your output quality.

Some Ricoh models require the error to be manually cleared from the system memory even after the physical issue is resolved. : This typically involves entering the Service Program (SP) Mode . On many models, this is done by pressing the Reset/Clear , and holding the Clear/Stop Once in SP mode, technicians use the