31.01MS331dn

Lexmark MS331dn error 31.01: Troubleshooting Guide

Lexmark MS331dn error 31.01 is a common alert indicating a communication failure between the toner cartridge and the main controller. This error usually occurs when the cartridge is misaligned or the chip is obscured by toner dust. Most users can resolve this issue by performing a clean reinstallation of the consumable.

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Common causes

  • 1Dirty toner chip causing communication failure.
  • 2Improper seating of the toner cartridge during installation.
  • 3Toner dust buildup affecting internal electrical sensor pins.
  • 4Firmware mismatch with non-OEM third-party chips.

Solutions

Diagnóstico rápido

This error 31.01 is identified by a message on the printer display panel. If your printer has stopped working, check if you have recently replaced the toner; if so, verify that no protective plastic covers were left on the chip.

Solución paso a paso

  1. Power off the unit and unplug it from the wall outlet.
  2. Open the front door and pull out the toner assembly.
  3. Clean the electrical contacts on both the toner and the internal printer cavity using a dry, lint-free cloth.
  4. Reinsert the cartridge ensuring it sits flush in the guides.
  5. Power on the printer and wait for the status lights to normalize.

Prevención y mantenimiento

Avoid touching the drum surface. We highly recommend using genuine Lexmark supplies to ensure chip compatibility. Periodically clean the inside of the printer with compressed air to remove toner particles.

Cuándo llamar a un técnico

If you have tried multiple cartridges and the printer still displays the 31.01 error, the problem may be in the high-voltage power supply or the internal chip reader, requiring professional repair.

Ficha técnica del equipo

  • Technology: Monochrome Laser
  • Speed: Up to 40 ppm
  • Connectivity: USB 2.0, Ethernet
  • Paper capacity: 350 sheets standard
  • Compatible supplies: 55B2000 / 55B2000H series
  • Recommended use: Medium office environments
  • Drivers / Official firmware

Steps to follow

  1. 1

    Power off

    Always turn off the printer before servicing to protect electronic components.

  2. 2

    Remove consumable

    Carefully remove the toner cartridge from the imaging unit.

  3. 3

    Clean contacts

    Wipe the gold-colored chip area with a soft cloth to ensure clean connectivity.

  4. 4

    Reinstall

    Push the cartridge back in until it locks into place.

Frequently asked questions

This error signifies that the printer cannot communicate with the toner chip or the cartridge is improperly installed.

It is not critical but will stop print operations until the toner chip is properly recognized by the system.

This model uses the Lexmark MS331/MS431 series toner. We suggest using genuine cartridges for reliable performance.

Regularly wipe the printer interior and ensure that consumables are stored in a dry, room-temperature environment.