400-02MC873dnfax

Error 400-02 OKI MC873dnfax: Network Issue

The OKI MC873dnfax error 400-02 is a network communication failure. It typically occurs when the printer cannot establish a handshake with the host or the gateway. Why does my printer show error 400-02? Often, it is a result of a damaged network cable, a port conflict, or DHCP address renewal failure on the enterprise network.

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Common causes

  • 1IP address conflict within the network.
  • 2Physically damaged Ethernet cable.
  • 3Security lockdown of the switch port.
  • 4Outdated network module firmware.

Solutions

Quick Diagnosis

The error 400-02 is confirmed when the device displays 'Connection Lost' while trying to reach external services. Check the LEDs at the back of the LAN port; if they are not blinking, the issue is physical.

Step-by-step Solution

  1. Check Cabling: Ensure the Ethernet cable is firmly seated in both the switch and the printer port.
  2. Restart Interface: Access the network menu and select 'Restart Network Card' to refresh the connection.
  3. Assign Static IP: Verify via the web console that the printer has a correct, non-conflicting static IP.
  4. Ping Test: Use a computer on the same network to ping the printer's IP to confirm it is reachable.

Prevention and Maintenance

Use Cat6 shielded cabling to minimize packet loss. Assign static IPs to all office network devices. Ensure the firmware is kept up-to-date to prevent known handshake compatibility bugs.

When to Call a Technician

If troubleshooting the network settings and cabling does not clear the error, the printer's internal NIC board may require replacement.

Technical Equipment Data

  • Technology: Color Laser Multifunction
  • Speed/Performance: 35 ppm
  • Connectivity: Gigabit Ethernet, USB 2.0
  • Input Capacity: Up to 2005 sheets
  • Compatible Consumables: OKI MC873 Toner Series
  • Recommended Use: High-volume workgroups
  • Drivers / Official Firmware

Steps to follow

  1. 1

    Check Cabling

    Ensure the Ethernet cable is firmly seated in both the switch and the printer port.

  2. 2

    Restart Interface

    Access the network menu and select 'Restart Network Card' to refresh the connection.

  3. 3

    Assign Static IP

    Verify via the web console that the printer has a correct, non-conflicting static IP.

Frequently asked questions

This error points to a network conflict or lost handshake between the printer and your office gateway.

It prevents printing over the network, though local features like USB scanning remain fully functional.

Error 400-02 is strictly a network communication fault; toner or drum levels are unrelated.

Assign a static IP via your router to prevent intermittent disconnects.

Error 400-02 OKI MC873dnfax: Network Issue | Vimazdev