Ricoh Error Code SC673-10: Explanation & Solutions

What is SC673-10? SC673-10 is a "Controller to Operation Panel" communication error specific to certain Ricoh models (often the MP 2555/3055/3555/4055/5055/6055 series or similar). The "-10" sub-code typically indicates a data reception error or a timeout in the serial communication between the main controller board (CTL) and the operation panel.

Firmware Update: Outdated or corrupt firmware is a common cause for SC673 errors. Check Ricoh Support for the latest firmware updates for your specific model. Advanced Service Mode Reset

Notes for Technicians

  • SC673-10 is often logged alongside SC672-11 or SC672-12, but those relate to controller-panel startup timeout. SC673-10 is more specific to a missing response from the panel.
  • After replacing parts, perform a memory clear (only if recommended by Ricoh support) and reload firmware.

Controller Issues: The main controller (CATS module) does not see the required response from the operation panel.

Fix C: Replace the Operation Panel

If the panel’s NVRAM is physically dead, no firmware will fix it.

The SC673-10 error code on Ricoh devices typically indicates a communication error between the operation panel and the controller board during startup or operation. This specific sub-code (-10) often points to a timeout or a failed handshake between the Linux-based operation panel and the machine's main controller. Core Causes

Primary Causes of SC673-10

Ricoh engineers have identified several root causes for this error. Understanding the cause is critical because replacing the wrong part wastes time and money.

Startup Delay: The controller board failed to start up within the allotted time after the power was turned on.