840.01MS317dn

Fix Lexmark MS317dn Error 840.01: Network Connection Issue

Error 840.01 on the Lexmark MS317dn is a network communication error, typically originating from the Ethernet interface. This prevents the machine from reaching the network. This guide covers physical and software steps to troubleshoot the connectivity issue.

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Common causes

  • 1Faulty Ethernet patch cable.
  • 2IP address conflict within the local network.
  • 3Disabled port on the networking hardware (Switch/Router).

Solutions

Check Physical Connectivity

  1. Disconnect and inspect the Ethernet cable for damage.
  2. Swap the cable with a known working CAT5e/CAT6 unit.
  3. Ensure the printer port LEDs are active after plugging in.

Reset Network Settings

  1. Navigate to the printer menu: Network/Ports.
  2. Select the option to reset network settings to factory defaults.
  3. Restart the printer to force a re-request of DHCP settings.

Steps to follow

  1. 1

    Cable Verification

    Ensure the Ethernet cable clicks into place correctly.

  2. 2

    Menu Access

    Navigate through settings to find active network parameters.

  3. 3

    Ping Test

    Verify connectivity from a workstation using the printer's IP.

Frequently asked questions

Dynamic (DHCP) is easier for homes, while static IP is preferred for businesses to prevent downtime.

Rarely, but it can affect newer network protocols.

This suggests a hardware failure of the internal NIC or a dead wall port.