The error on Ricoh devices is a communication failure between the Smart Operation Panel (SOP) and the main controller (CTL) during startup . This specific sub-code indicates that "Flair" communication—the link used by smart panels—is not reaching the panel. Core Causes

Common causes include:

is a "Communication Error (Controller to Operation Panel)" with subtype 10 . Unlike general communication errors (e.g., SC672), this one specifically indicates that the Controller board (CTL) successfully established physical link with the Operation Panel but failed to receive the correct startup handshake or identification packet from the panel's internal computer. In plain English: The printer's main brain can see the screen's brain, but the screen's brain isn't talking the right language or is crashing during boot.

Turn off the main power switch, unplug the machine, wait 1 minute, then plug back in and turn on. This clears temporary glitches.