: Some models use a USB cable to connect the Smart Operation Panel to the controller; ensure it is firmly seated and not damaged.
: The controller board is slow to respond or is malfunctioning. Step-by-Step Troubleshooting Guide 1. Basic Power Cycle
: Reflashing the machine's system firmware can resolve software-level communication bugs.
Navigate to (OpePanel Setting: Cheetah Panel Connect Setting).
Ricoh SC Error Codes and Resets Guide | PDF | Modem - Scribd