0x40WorkForce Pro WF-C5390

Epson WorkForce Pro WF-C5390 error 0x40: Communication Failure

The Epson WorkForce Pro WF-C5390 error 0x40 occurs when there are conflicts at the network communication layer, preventing devices from successfully sending documents to the print queue. Solutions involve technical configuration of network communication protocols.

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Common causes

  • 1IP address conflict within the local network.
  • 2Temporary network protocol failure in firmware.
  • 3Damaged or low-quality Ethernet cable.
  • 4Electromagnetic interference on wireless connections.

Solutions

Diagnóstico rápido

The 0x40 error triggers when the printer loses responsiveness to network commands. If all print jobs fail immediately, verify if other devices on the same network also suffer from connection drops.

Solución paso a paso

  1. Disconnect the Ethernet cable and reboot the printer.
  2. Access configuration settings and select 'Reset Network Settings'.
  3. Assign a static IP address outside the main DHCP range.
  4. Reconnect or reconfigure the Wi-Fi settings.

Prevención y mantenimiento

Always keep the printer firmware updated to avoid protocol conflicts. For wired setups, use Cat6 cables to ensure noise-free data communication.

Cuándo llamar a un técnico

If all network settings reset and cable swaps fail to restore recognition, the internal network card likely requires a physical replacement.

Ficha técnica del equipo

  • Technology: PrecisionCore
  • Connectivity: Gigabit Ethernet, Wi-Fi Direct
  • Consumable: Genuine T11 / T12
  • Recommended usage: Corporate environments
  • Dimensions: Compact desktop form factor
  • Official drivers / firmware

Steps to follow

  1. 1

    Check network connectivity

    Verify if the Ethernet cable or Wi-Fi signal is working on other local devices.

  2. 2

    Reboot peripherals

    Restart your router and printer to clear the assigned IP address cache.

  3. 3

    Update firmware

    Check the official support website for any recent network-related firmware updates.

Frequently asked questions

Error 0x40 points to a network board problem or IP address conflict preventing effective communication between the PC and printer.

No, this error is exclusively communication-based and unrelated to ink or consumables status.

Set a static IP address in the printer settings to avoid DHCP conflicts in your local network.

If the error persists after resetting network defaults, the internal network card may have physical damage.