e020imageCLASS MF656Cdw

Canon imageCLASS MF656Cdw error E020: Fix

Canon imageCLASS MF656Cdw error E020 indicates an issue with toner detection. Understanding why my Canon imageCLASS MF656Cdw shows error E020 typically involves toner cartridge alignment or chip contact problems. Resolve this to get back to printing.

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Common causes

  • 1Dirty chip contact.
  • 2Misaligned cartridge.
  • 3Sensor failure.
  • 4Toner dust accumulation on sensors.

Solutions

Diagnóstico rápido

E020 generally means the printer cannot verify one of the toner cartridges. Start by reseating all of them.

Solución paso a paso

  1. Open the front door.
  2. Remove all cartridges carefully.
  3. Clean the metal chips with a dry cloth.
  4. Reinsert firmly.
  5. Restart the printer.

Prevención y mantenimiento

Only use original Canon 067 series. Handle cartridges by the edges, not the metal pins.

Cuándo llamar a un técnico

If the error remains after cleaning, the internal developer unit or high voltage unit might be failing.

Ficha técnica del equipo

  • Technology: Color laser printer
  • Speed: 22 ppm
  • Connectivity: Wi-Fi, Ethernet, USB
  • Compatible consumables: Canon 067 series
  • Recommended usage: Small office
  • Official drivers / firmware

Steps to follow

  1. 1

    Open door

    Open front toner access.

  2. 2

    Remove toners

    Gently pull all toner cartridges.

  3. 3

    Clean contacts

    Clean the gold chips.

  4. 4

    Reseat

    Insert all toners back firmly.

Frequently asked questions

Developer/toner communication error.

Yes, printing stops.

Canon 067 series.

Avoid touching chips.

Canon imageCLASS MF656Cdw error E020: Fix | Vimazdev