The operation panel fails to communicate with the controller (CTL) after the machine is powered on.
Before calling a technician, you can try these steps.
: Sudden drops or spikes in the office power supply disturb the sensitive data transfer lines between the boards. sc673-10 ricoh error
Load the firmware onto an SD card or USB drive formatting to FAT32.
Inspect the physical cable harness running from the display panel down into the controller board. The operation panel fails to communicate with the
The machine will stop working and display this code. The operation panel may be frozen, blank, or unresponsive. You cannot copy, print, or scan.
: If the error occurs during a print job, ensure you are using the latest official printer drivers from Ricoh Support . How to Perform an SC Reset Load the firmware onto an SD card or
Fluctuations in wall voltage or a failing internal Power Supply Unit (PSU) can prevent the operation panel from drawing enough current to boot up before the controller times out. Step-by-Step Troubleshooting and Fixes
Insufficient or unstable voltage reaching the operation panel or controller can prevent successful boot-up handshakes.
: Ensure any peripheral devices (like card readers or finishers) are securely connected, as loose external hardware can trigger 600-series communication errors.