990MC363dn

Fix OKI MC363dn Error 990: Network Connectivity

Error 990 signals a network interface timeout or communication error between the OKI MC363dn and the local network. This is often due to IP conflicts or physical hardware issues. Troubleshooting your LAN setup is usually required.

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Common causes

  • 1IP address conflict in the network.
  • 2Faulty or damaged network cable.
  • 3Firewall restrictions on the router.

Solutions

Physical Check

  1. Swap the Ethernet cable.
  2. Ensure the link lights on the printer port are active.
  3. Try a different port on the router.

Network Reset

  1. Enter Admin settings.
  2. Reset network to factory defaults.
  3. Reconfigure connection protocols.

Steps to follow

  1. 1

    Physical Link

    Verify the Ethernet cable connection.

  2. 2

    Hardware Reboot

    Reboot the router and printer simultaneously.

  3. 3

    Set Static IP

    Manually set a static IP address to ensure stability.

Frequently asked questions

Usually, it is a configuration or physical link issue, not a permanent hardware failure.

Try pinging the printer's IP address from a computer on the same network.

DHCP is convenient, but static IPs are more reliable for business printers.