31.01Lexmark CS943de

Fixing 31.01 Error on Lexmark CS943de Printer

Error 31.01 is related to the paper input tray on the Lexmark CS943de. This code triggers when the sensor fails to detect paper motion or if there is a mechanical obstruction in the feed mechanism. Proper cleaning of the rollers and paper alignment are critical to fixing this.

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Common causes

  • 1Dust buildup on feed rollers preventing friction.
  • 2Improperly adjusted paper guides causing skewing.
  • 3Paper weight exceeding printer specifications.

Solutions

Roller Cleaning

  1. Remove the affected paper tray.
  2. Use a lint-free cloth dampened with distilled water.
  3. Gently wipe the rubber rollers to remove dust buildup.
  4. Dry with a dry cloth before reinserting the tray.

Paper Check

  1. Verify paper meets the recommended weight specifications.
  2. Ensure tray guides are snug against the paper stack.
  3. Remove any crumpled or damaged sheets.

Steps to follow

  1. 1

    Remove tray

    Pull out the main paper tray gently.

  2. 2

    Inspect path

    Check for debris or paper scraps in the input channel.

  3. 3

    Reinsert tray

    Slide the tray back in until it clicks into position.

Frequently asked questions

Avoid strong alcohol as it can dry out the rubber; use distilled water or a dedicated rubber cleaner.

A dirty sensor might be the culprit. Try cleaning the sensor area with compressed air.

Yes, as a workaround, using the multipurpose tray can help if the main tray is causing frequent 31.01 errors.