310C711dnHas video

Error 310 OKI C711dn: Registration Sensor Fault Troubleshooting

The 310 error code on an OKI C711dn indicates a timing mismatch or obstruction at the registration sensor level, which regulates paper entry into the print path.

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Common causes

  • 1Accumulation of paper fibers blocking the optical sensor window.
  • 2A tiny scrap of torn paper stuck inside the feed rollers.
  • 3Stuck or damaged actuator flag that cannot return to its default position.

Solutions

Step-by-Step Fixes for Error Code 310

Paper dust buildup or a microscopic paper scrap is the most common culprit behind this error.

  1. Inspect Paper Entry Way: Turn off the device, pull out the paper tray, and inspect the ceiling of the tray cavity where paper feeds upward.
  2. Clean Sensor Actuator: Check the black plastic flag (the physical sensor lever). Flick it gently to make sure it springs back into place easily without sticking.
  3. De-dust Feed Assembly: Use canned air or a clean paintbrush to brush away any dust resting near the optical photo-interrupter sensor.

Steps to follow

  1. 1

    Power down and unplug

    Turn off the printer using the physical switch and detach the power cord from the wall outlet.

  2. 2

    Clear tray and check rollers

    Remove Tray 1. Look inside and inspect the pickup rollers and the registration mechanism above them.

  3. 3

    Clean optical sensor area

    Gently clean the black sensor flag and the sensor slot with compressed air to remove lingering paper dust.

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Frequently asked questions

Yes, cheap or overly dusty paper sheds micro-fibers faster, coating optical sensors and triggering registration faults.