e121imageCLASS D570

Canon imageCLASS D570 Error E121: Fix

The Canon imageCLASS D570 error e121 appears when the scanning unit detects a failure in its internal carriage movement. This prevents the device from completing its power-on self-test. Often, the problem stems from a simple mechanical blockage or a fault in the sensor's flat data cable.

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Common causes

  • 1Transport lock is active.
  • 2Obstruction by residue on the rail.
  • 3Electronic failure in the scanner sensor.
  • 4Transmission belt wear.

Solutions

Diagnóstico rápido

The scanning carriage is stuck or the home sensor is unresponsive.

Solución paso a paso

  1. Unlock the safety lock.
  2. Restart the unit.
  3. Clean the glass.

Prevención y mantenimiento

Avoid rough handling of the scanner.

Cuándo llamar a un técnico

If you hear grinding sounds when turning on, the motor or guides are damaged.

Ficha técnica del equipo

  • Technology: Monochrome laser.
  • Speed: 28 ppm.
  • Connectivity: Wi-Fi, USB.
  • Consumable: 137 Cartridge.

Steps to follow

  1. 1

    Safety Lock

    Verify the shipping lock is deactivated.

  2. 2

    Restart

    Turn off and on to recalibrate the scanner motor.

  3. 3

    Clean

    Clean the platen glass to prevent reading errors.

Frequently asked questions

Yes, E121 indicates the scanner carriage couldn't complete its startup cycle due to an obstruction or motor failure.

It uses all-in-one Canon 137 cartridges.

If the motor is physically stuck, you can try removing any object; otherwise, it requires repair.

Avoid accidental bumps while moving the unit.

Canon imageCLASS D570 Error E121: Fix | Vimazdev