print-unable-02MFC-EX720

Brother MFC-EX720 print unable 02 error: Easy fix guide

The Brother MFC-EX720 print unable 02 error occurs when the print carriage cannot move freely. This system error halts all printing operations to prevent damage to the internal motors. Often, the issue is caused by a small piece of paper or dust blocking the rail.

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Common causes

  • 1Paper scraps on the path.
  • 2Dirty encoder strip.
  • 3Carriage motor failure.
  • 4Broken timing belt.

Solutions

Quick Diagnosis

If you hear grinding sounds when turning on the machine, the issue is physical resistance on the carriage rail.

Step-by-Step Solution

  1. Disconnect the power cable.
  2. Open the printer cover.
  3. Manually move the carriage to check for obstructions.
  4. Clean the encoder strip gently.

Prevention and Maintenance

Keep the printer in a clean environment and avoid excessive humidity. Use original inks for better printhead health.

When to Call a Technician

If the error persists after checking the rail and sensor, the carriage motor may be faulty.

Device Technical Sheet

  • Technology: Inkjet.
  • Speed: 30 ppm.
  • Connectivity: USB, Wi-Fi.
  • Compatible Consumables: LC75/LC79 ink series.
  • Official Drivers

Steps to follow

  1. 1

    Power Off

    Disconnect the printer from the wall outlet for ten minutes.

  2. 2

    Inspect Rail

    Open the lid and check for any paper debris or foreign objects.

Frequently asked questions

The error indicates a mechanical obstruction preventing the printhead carriage from moving along the rail.

It is a stop error, not dangerous, but requires manual intervention to clear the carriage path.

Use LC75 or LC79 cartridges for optimal performance and printhead longevity.

A light cleaning every few months helps prevent paper dust from reaching the carriage components.