If you replaced the operation panel with a used unit from a different model, or if a technician flashed the wrong panel firmware, the controller will reject the panel, showing SC673-10.
On some Ricoh models, you can force a panel firmware reload: sc673-10 ricoh error
: The operation panel's monitor service or system application crashed during operation. Troubleshooting & Solutions Follow these steps in order to resolve the SC673-10 error: If you replaced the operation panel with a