380C931 Series

OKI C931 Series error 380: Communication Failure Solution

The OKI C931 Series error 380 indicates a persistent communication failure between the printer and the local network. This error commonly appears when the device loses its path to the server due to timeout or IP conflicts. Addressing this issue requires verifying both physical infrastructure and software network settings.

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Common causes

  • 1DHCP server assigning conflicting IP addresses.
  • 2Degraded network cable signal causing packet loss.
  • 3Onboard network controller unresponsive due to memory overflow.
  • 4Incorrect network gateway configuration in printer settings.

Solutions

Diagnóstico rápido

Error 380 is usually signaled by a network notification on the panel. If the printer cannot reach the gateway, ensure other devices can ping the network to rule out a central office switch problem.

Solución paso a paso

  1. Check physical network cable: Unplug and firmly reinsert the Ethernet cable to ensure a solid connection.
  2. Power cycle the device: Turn off the printer and disconnect power for 60 seconds to reset the network controller.
  3. Set static IP address: Access the network menu and assign a manual IP to avoid DHCP conflicts.
  4. Verify print port: Ensure the driver on the PC is pointing to the correct updated IP address.

Prevención y mantenimiento

Keep the network port free of dust. Use high-quality shielded Cat6 cabling and ensure your printer firmware is updated via the manufacturer's portal to maintain protocol compatibility.

Cuándo llamar a un técnico

If the error persists after resetting network configurations and replacing the Ethernet cable, the onboard NIC may require professional diagnostic and potential replacement.

Ficha técnica del equipo

  • Technology: LED Laser Color Printer
  • Speed/Performance: Up to 50 ppm
  • Connectivity: Gigabit Ethernet 10/100/1000
  • Paper Capacity: Standard tray 530 sheets
  • Compatible Consumibles: C900 Series toner family (Original recommended)
  • Recommended Use: Graphic production environments
  • Official drivers / firmware

Steps to follow

  1. 1

    Check physical network cable

    Unplug and firmly reinsert the Ethernet cable to ensure a solid connection.

  2. 2

    Power cycle the device

    Turn off the printer and disconnect power for 60 seconds to reset the network controller.

  3. 3

    Set static IP address

    Access the network menu and assign a manual IP to avoid DHCP conflicts.

Frequently asked questions

The error 380 signifies a network timeout, meaning the printer failed to establish a handshake with the print server.

It is not a hardware failure, but it stops network jobs. It is typically a simple configuration or connectivity issue.

Use original C900 series toner cartridges to ensure color accuracy and machine longevity.

Check your network settings and firmware status every 6 months to ensure optimal performance.