404C931dw

OKI C931dw error 404: Network Troubleshooting Guide

The OKI C931dw error 404 is a communication fault occurring when the printer fails to establish a stable connection with the network server. This warning often follows router configuration changes or physical cable faults. By resolving why my OKI C931dw shows error 404, you will restore the device's ability to receive office print jobs.

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Common causes

  • 1IP address conflict within the local network.
  • 2Defective or damaged Ethernet cable.
  • 3Faulty RJ45 port on the internal network card.
  • 4Speed negotiation mismatch with the switch port.

Solutions

Diagnóstico rápido

The 404 is a classic handshake error. If the Ethernet port lights on the back of the printer are off, the issue is purely physical or a Layer 1 network problem.

Solución paso a paso

  1. Replace the network cable to rule out internal damage.
  2. Check the IP configuration on the panel; if set to automatic, try assigning a fixed IP.
  3. Ensure the network controller firmware is updated.
  4. Reboot the print server from the control panel.

Prevención y mantenimiento

Label your network cables correctly and avoid excessive bending. Keep the firmware updated, as this often includes critical stability improvements for the TCP/IP stack.

Cuándo llamar a un técnico

If the error 404 persists after testing with different cables and network ports, the internal network card might be damaged, requiring professional technical service.

Ficha técnica del equipo

  • Technology: Digital LED
  • Speed/performance: 50 ppm
  • Connectivity: USB, Gigabit Ethernet, LAN
  • Input capacity: 2950 sheets max.
  • Compatible supplies: C931 Series (original)
  • Recommended usage: Corporate environments
  • Drivers / official firmware

Steps to follow

  1. 1

    Cable check

    Ensure the Ethernet cable is securely connected at both ends.

  2. 2

    Network reset

    Power off the switch or router and the printer, then power them back on.

  3. 3

    IP Verification

    Print a network status sheet to confirm the printer is receiving a valid IP address.

Frequently asked questions

This error signals communication loss between the printer and network, usually related to IP or cable issues.

No, error 404 is strictly connectivity-based and doesn't affect consumables.

Access the network menu on the front panel and select factory reset for network values.

Only if you need to print immediately. The error does not compromise component lifespan.