0x43WorkForce Pro WF-C5390

Epson WorkForce Pro WF-C5390 error 0x43: Troubleshooting Guide

The Epson WorkForce Pro WF-C5390 error 0x43 notifies the user that internal sensors have failed to initialize. This error usually occurs upon powering on or after an improperly cleared paper jam. A quick response helps keep the device operational for your business needs.

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Common causes

  • 1Light blockage of the sensor due to external debris.
  • 2Motor desynchronization during initialization.
  • 3Communication failure between the main board and print head.
  • 4Outdated firmware causing calibration conflicts.

Solutions

Diagnóstico rápido

The 0x43 error appears right at startup. If the carriage does not move to perform its initial calibration dance, it is highly likely that the sensor array is blocked or miscalibrated.

Solución paso a paso

  1. Turn off the printer and disconnect all data cables.
  2. Use a flashlight to inspect for dust or paper scraps near the positioning sensors.
  3. Ensure all covers are snapped firmly into place.
  4. Reconnect to a wall outlet and power on.

Prevención y mantenimiento

Preventative maintenance involves keeping the output area free of dust and debris. Genuine ink usage is vital to avoid messy buildup on delicate sensors.

Cuándo llamar a un técnico

If the 0x43 error persists after a factory reset and firmware update, the internal sensor board may need replacement.

Ficha técnica del equipo

  • Technology: PrecisionCore Heat-Free
  • Monthly Cycle: 50,000 pages
  • Connectivity: Wi-Fi, Ethernet, USB
  • Capacity: 250 sheets
  • Compatible consumable: T11 / T12 Series
  • Recommended usage: Office environments
  • Official drivers / firmware

Steps to follow

  1. 1

    Full power down

    Turn off the printer and unplug it from the wall outlet to avoid electrical damage.

  2. 2

    Hardware inspection

    Check the output tray area for any obstructions that may block the internal sensor's line of sight.

  3. 3

    Firmware check

    If the error persists upon startup, access the menu to check for firmware updates.

Frequently asked questions

This code points to a sensor reading failure in the printing unit, often caused by calibration errors or dust blocking the signal.

It is not a fatal failure, but it prevents printer usage until the sensors can successfully complete a calibration cycle.

Yes, non-certified cartridges can lead to internal sensor reading issues due to ink density variations.

Consistent exterior cleaning and avoiding direct sunlight helps maintain sensor integrity.

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