31.02Lexmark MX911dte

Fix Lexmark MX911dte Error 31.02: Paper Path Issues

Error code 31.02 on the Lexmark MX911dte suggests that the tray sensor has detected an issue with media detection. This is frequently caused by debris within the paper path or misaligned tray guides. Regular maintenance and proper loading techniques can prevent this common issue.

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Common causes

  • 1Paper loaded incorrectly in the feed tray.
  • 2Accumulated dust blocking the internal tray sensors.
  • 3Worn pick rollers causing paper misfeeds.

Solutions

Tray Check

  1. Pull out the paper tray completely.
  2. Ensure no small scraps of paper are lodged in the rollers.
  3. Verify that the side guides are snug against the paper stack.

Sensor Cleaning

  1. Use a flashlight to identify the paper presence sensor.
  2. Use compressed air to blow out any dust or toner debris.
  3. Gently ensure the sensor flag moves without resistance.

Steps to follow

  1. 1

    Remove tray

    Remove the primary paper tray from the printer.

  2. 2

    Inspect path

    Check the interior for any obstructions or torn paper fragments.

  3. 3

    Reset sensor

    Test the sensor flag manually to ensure it triggers correctly.

Frequently asked questions

Always fan your paper before loading and keep the printer environment free of excessive dust.

No, it is usually a maintenance-related issue that clears once the sensor is free of debris.

The sensor unit might be faulty and require professional replacement by a service technician.