140bmaxify-gx2020

Canon MAXIFY GX2020 error 140b: Fix Guide

The Canon MAXIFY GX2020 error 140b signals a conflict in the printhead detection by the printer's logic system. This warning appears when electrical contacts between the printhead and the carriage are dirty, oxidized, or if there is a physical failure in the printhead itself. This is a technical issue requiring careful handling to restore component communication.

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Common causes

  • 1Dirty gold contacts or ink residue on printhead.
  • 2Printhead incorrectly seated in carriage.
  • 3Internal electronic failure of the printhead.
  • 4Wear of the carriage contact pins.

Solutions

Diagnóstico rápido

Error 140b usually manifests after heavy printing. Check if the printhead shows any visual alerts or if the panel specifically flags a recognition error.

Solución paso a paso

  1. Turn off the printer.
  2. Lift the scanner cover and ink compartment.
  3. Carefully remove the affected printhead.
  4. Gently clean gold contacts with a soft, dry, lint-free cloth (no alcohol).
  5. Reinstall the printhead and verify the lock is secure.

Prevención y mantenimiento

Avoid touching gold pins with fingers to prevent oil transfer. Keep the printer in a clean area. Always use original ink to avoid nozzle clogging.

Cuándo llamar a un técnico

If the error persists after cleaning and reseating, the printhead's internal circuitry is likely damaged and requires professional replacement.

Ficha técnica del equipo

  • Technology: Inkjet (MegaTank)
  • Speed: Up to 24 ipm
  • Connectivity: Wi-Fi, Ethernet, USB
  • Capacity: 250 sheets
  • Compatible Consumable: GI-26 Ink Series
  • Recommended Use: Small Office
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Open cover

    Lift the scanner unit to access the compartment.

  2. 2

    Clean contacts

    Wipe gold printhead contacts with a lint-free cloth.

  3. 3

    Reseat

    Reinsert the printhead ensuring it locks perfectly.

Frequently asked questions

This error indicates the printhead is not recognized due to dirty contacts or damage.

Yes, 140b blocks printing until the printhead is correctly detected.

It uses the GI-26 ink series.

Run regular cleaning cycles and keep the printer in a clean environment.

Canon MAXIFY GX2020 error 140b: Fix Guide | Vimazdev