1402MAXIFY GX5020

Canon MAXIFY GX5020 error 1402: Printhead fix

The Canon MAXIFY GX5020 error 1402 indicates an electrical communication failure between the printhead and the main controller. This error commonly appears after hardware maintenance if the printhead wasn't fully locked or if dust/ink has contaminated the connector pins. Fixing this involves cleaning the gold contacts and verifying correct seating. Reliable maintenance of these components ensures the longevity of your high-performance business printer.

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Common causes

  • 1Printhead not securely locked in the carriage.
  • 2Contamination (ink or dust) on gold connector pins.
  • 3Pin degradation causing poor electrical signal.
  • 4Faulty internal circuitry in the printhead unit.

Solutions

Quick Diagnosis

If this alert triggered shortly after handling the printhead, the physical connection is the most likely culprit. Ensure no loose debris is stuck behind the printhead carriage.

Step-by-Step Solution

  1. Disconnect the power cord while the machine is on.
  2. Open the access door and carefully remove the printhead units.
  3. Check the connector pins on both the printer carriage and the head for any residue.
  4. Gently wipe the gold pins with a soft, dry, lint-free cloth.
  5. Snap the printheads back into the carriage until you hear them click.
  6. Power on the device and allow the automatic system check to finish.

Prevention and Maintenance

Avoid direct skin contact with the gold pins to prevent oils from affecting conductivity. Only clean them if you suspect contamination or if error messages appear.

When to Call a Technician

If reseating and cleaning the pins does not clear error 1402, the internal circuitry of the printhead might have reached its end-of-life or suffered a short circuit.

Technical Specifications

  • Technology: Inkjet (MegaTank)
  • Performance: High-speed for offices
  • Connectivity: Wi-Fi, Ethernet, USB
  • Media Feed: High-capacity tray
  • Consumable: GI-26 ink & user-replaceable printheads
  • Recommended Use: Enterprise & small business
  • Official Drivers / firmware

Steps to follow

  1. 1

    Access printheads

    Open the top lid to move the carriage to the center.

  2. 2

    Reseat components

    Remove the printheads and snap them back into place firmly.

  3. 3

    Clean contacts

    Wipe electrical contacts with a dry cloth before reinstalling.

Frequently asked questions

It signifies a poor electrical connection between the printhead and the printer's motherboard.

Often not; simply reseating the printhead usually resolves the connection issue.

Use the printer's built-in maintenance tools if you see print quality drops.

No, this error relates specifically to the electronic interface of the printhead unit.