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Turn off the printer and unplug the power cord before disconnecting any internal cables. Wait at least 30 seconds for capacitors to discharge.
This is the most common cause, especially after a firmware update. If the Operation Panel firmware is corrupted or does not match the controller firmware version, the handshake fails. The -10 sub-code is particularly sensitive to timing issues introduced by buggy firmware.
If the panel is partially responsive or the technician can access the machine via a service tool, they will force-feed a firmware update to overwrite any corrupted software sectors that are blocking the controller interface. Controller Board Replacement
The operation panel connects to the controller board via a flat flexible cable (FFC). If this cable is loose, bent, or has corroded contacts, high-speed data packets get lost, triggering the error.
When you switch the machine on, the controller board executes a boot sequence and ping-tests all connected peripherals. If the operation panel remains unresponsive during this boot window, the machine halts and displays the SC673-10 code. Primary Causes of the SC673-10 Error sc673-10 ricoh error
When the controller boots, it sends a WHO_ARE_YOU? command to the panel. The panel must reply with its model ID and firmware version within a strict window (typically 15–30 seconds). means the controller received no valid reply or a malformed reply during that window. The controller then shuts down the panel power (via the 5V/12V enable line) and logs SC673-10.
The operation panel itself is essentially an independent Android-based tablet computer. Internal component failures on the panel's printed circuit board (PCB) or a corrupted local operating system will prevent it from responding to the controller. 4. Controller Board Defect
Carefully remove the SD card, check for dust, wipe the gold contacts with a dry microfiber cloth, and reinsert it firmly.
After replacing a controller board, you must update the panel firmware via SD card before first boot – otherwise SC673-10 will appear immediately. Turn off the printer and unplug the power
Loose cables between the panel and the main board, or a failing controller board. Recommended Solutions Perform a Power Cycle: Turn off the main power switch. Disconnect the power cord from the wall for at least 60 seconds to clear the residual charge. Plug it back in and restart the machine. Verify Service Mode Settings: If you can access the Service Mode (typically by pressing Clear Modes and holding Clear/Stop SP5-748-201 Ensure this value is set to
A hardware defect inside the touchscreen assembly itself.
Enter Service Mode and navigate to . Execute the reset and restart the machine. Summary Table Feature Error Type Communication Failure (Flair/Cheetah Communication) Primary Component Smart Operation Panel & Main Controller Main Fix Power cycle or enabling SP5-748-201 Critical Note Often caused by power surges; use a stabilizer/UPS
Never turn off the machine using the main power switch while it is processing a job or updating firmware. Always use the “Shutdown” option on the touchscreen when possible, or wait for the hard drive to idle. If the Operation Panel firmware is corrupted or
Navigate to or type in (Smart Operation Panel setting).
In this detailed guide, we will break down exactly what SC673-10 means, its root causes, step-by-step troubleshooting procedures, and long-term prevention strategies.
A random electronic lockup or corrupted temporary cache.