.
If you've tried everything above and the SC673-10 error persists, the issue likely requires a certified Ricoh service technician.
| Test point | Expected signal | If abnormal | |------------|----------------|--------------| | Pin 1-2 on panel cable | 5V ±0.25V at boot | Check PSU on controller | | Pin 3 (I2C_CLK) | 100kHz pulses during first 10 seconds | Short to GND or bent pin | | Pin 4 (I2C_DATA) | Should mirror clock with data | Broken trace – replace cable | | Panel test pad TP12 (3.3V) | 3.3V steady after 2 seconds | Panel DC-DC converter failed | sc673-10 ricoh error
A failing Controller Board (also called the Main Board or BICU board) may send incomplete or incorrect initialization signals. This is less common but happens, especially after a power surge or electrical event. If you've tried everything above and the SC673-10
between the control panel and the printer's controller board. between the control panel and the printer's controller board
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.
Corrupted print jobs stuck in the network queue or faulty external USB devices can occasionally lock up the controller during startup. Step-by-Step Troubleshooting Checklist
Load the firmware onto an SD card or USB drive formatting to FAT32.