Fix Ricoh SP 3710DN SC320 Error Code | Laser Sync Fault
Error code SC320 on the Ricoh SP 3710DN signifies that the printer's optical sensor did not detect the start-of-scan laser beam. This prevents proper latent image formation on the OPC drum. Use this diagnostic procedure to safely clear transient sensor errors.
Common causes
- 1Laser diode emission failure or degradation.
- 2Obstruction or toner dust on the laser sync sensor lens.
- 3Loose flat cable between laser diode and main PCB.
- 4Faulty engine control board.
Solutions
Troubleshooting Code SC320
When this error triggers, the engine board stops processing print jobs to prevent blurred outputs.
Recommended Actions:
- Full System Power Cycle: Turn off the printer via the main power button and unplug it for 5 minutes.
- Check Electrical Supply: Ensure the printer connects straight to an unshared wall outlet to rule out voltage drops.
- Firmware Update: If the issue is intermittent, update the system firmware to the latest revision via the web status monitor.
Steps to follow
- 1
Power off system
Turn off the side switch and pull out the power cord from the electrical socket.
- 2
Drain remaining charge
Wait 5 minutes to let the internal capacitors fully discharge.
- 3
Power up and test
Plug the unit back in, turn it on, and print a test page to verify normal operation.
Videos
Frequently asked questions
No. It is often a temporary glitch caused by power fluctuations or dust, though hardware replacement may be needed if persistent.
If the error was caused by a temporary power dip, a power cycle can clear the fault state.