sc322-00Aficio MP C4503

Ricoh Aficio MP C4503 error SC322-00: Laser repair

The Ricoh Aficio MP C4503 error SC322-00 indicates a laser beam synchronization failure. The laser detector is failing to register the light beam, causing the machine to disable printing to prevent blurred or blank output.

2 views

Common causes

  • 1Dust on the lens.
  • 2Polygon mirror motor failure.
  • 3Loose data cable.
  • 4Defective sync sensor.

Solutions

Diagnóstico rápido

If the machine displays SC322-00, verify the cleanliness of the laser optics. If you previously noticed smudged text, it's a clear sign that the laser path is obstructed.

Solución paso a paso

  1. Access: Reach the laser optics chamber.
  2. Clean: Carefully use compressed air to clear lens obstructions.
  3. Cable: Check the wire harness connected to the LDB unit for looseness.
  4. Restart: Boot the machine to reset the sensor check.

Prevención y mantenimiento

Ensure the machine is not near dusty areas. Clean laser optics every 150k prints.

Cuándo llamar a un técnico

If professional cleaning does not resolve SC322-00, the polygon motor or the laser unit itself has reached its service end.

Ficha técnica del equipo

  • Technology: Color Laser
  • Speed: 45 ppm
  • Optical System: LDB Unit
  • Consumible compatible: MPC4503 Toner Series
  • Drivers / firmware oficial: https://www.ricoh.com/support/mp-c4503

Steps to follow

  1. 1

    Inspection

    Access the laser unit and check for dust buildup.

  2. 2

    Connectivity

    Verify that the LDB unit connector is firmly plugged.

  3. 3

    Cleaning

    Clean the polygon mirror with dry air or a lint-free cloth.

Frequently asked questions

It is a laser beam synchronization error, meaning the laser detector is not receiving a signal.

Usually, cleaning the optics resolves the issue; only replace the unit if physical damage occurs.

Only if there is a severe toner leak inside the machine.

Regular preventive maintenance and keeping the office environment dust-free are essential.