602OKI B412dn

Fix OKI B412dn Error 602: Paper Path Issues

Error 602 on the OKI B412dn occurs when the registration sensor fails to detect paper within the expected time after a print cycle begins. This error is common when paper scraps block the path or when the sensor is dirty. Solving this quickly restores printer availability.

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Common causes

  • 1Paper scraps lodged near the registration unit.
  • 2Optical sensors obscured by accumulated toner dust.
  • 3Misalignment of the paper guides in the tray.

Solutions

Paper Path Cleaning

  1. Fully remove the paper tray.
  2. Open the front cover to access rollers.
  3. Use a lint-free cloth to remove dust and debris.

Sensor Verification

  1. Locate the registration sensor actuator.
  2. Ensure the sensor flag moves freely.
  3. Clean the area with compressed air.

Steps to follow

  1. 1

    Remove Tray

    Extract the paper tray to inspect the intake area.

  2. 2

    Check Rollers

    Manually rotate feed rollers to check for wear or blockages.

  3. 3

    System Reset

    Close all doors and restart the printer for recalibration.

Frequently asked questions

Not necessarily; sometimes the sensor is blocked by dust, even if no paper is physically present.

Keep the tray closed, use quality paper, and perform regular internal cleaning with compressed air.

Standard 75-80g bond paper is recommended to ensure rollers grip effectively during feed.

Fix OKI B412dn Error 602: Paper Path Issues | Vimazdev