C-D161bizhub C3350

Fix bizhub C3350 Error C-D161: Controller Communication

The C-D161 code on the Konica Minolta bizhub C3350 indicates a failure in communication between the main board and the operating panel or network interface. This error effectively disables the machine's ability to process jobs over the LAN. A forced reset of the network settings is the standard first step to restoring functionality.

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Common causes

  • 1IP address conflict with another device on the local network.
  • 2Routing table corruption in the controller's flash memory.
  • 3Damaged Ethernet cable leading to high packet loss.
  • 4Auto-negotiation failure between the switch and the printer.

Solutions

Diagnóstico rápido

The C-D161 error is identified when the panel freezes or the printer shows up as 'Offline' on the network, despite being powered on. If the UI is unresponsive, it confirms a communication error at the controller level.

Solución paso a paso

  1. Isolate: Unplug the Ethernet cable to prevent external network traffic interference.
  2. Base Reboot: Power cycle the unit without the network connected until it reaches the 'Ready' screen.
  3. Network Reset: Go to 'Network Settings' and perform a complete network reset to wipe old static configs.
  4. Static IP: Reconnect the cable and assign a clean, reserved static IP address.

Prevención y mantenimiento

  • Regularly update the MFP Board firmware to patch network protocol bugs.
  • Connect the device to a dedicated network switch to avoid packet collision.
  • Clear print queues frequently to prevent data corruption during processing.

Cuándo llamar a un técnico

If the error persists after resetting network configurations, the main controller board (MFP Board) may have a memory corruption issue that requires professional firmware reflashing.

Ficha técnica del equipo

  • Technology: Emperon Controller
  • Network Speed: 10/100/1000 Base-T
  • System Memory: 2GB standard
  • Copy Resolution: 600 x 600 dpi
  • Compatible Consumables: TNP-44 (Black), TNP-43 (Color)
  • Network Protocols: TCP/IP (IPv4/IPv6), SMB, LPD, IPP
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Isolate network

    Disconnect the LAN cable to clear any faulty incoming data packets.

  2. 2

    Reset settings

    Access the service menu and perform a factory reset on network parameters.

  3. 3

    Configure IP

    Assign a manual static IP address and verify the subnet mask alignment.

  4. 4

    Verify

    Reconnect the Ethernet cable and run a ping test from a workstation.

Frequently asked questions

It is unlikely. Most cases are configuration-related or software bugs. Try resetting the network settings before assuming hardware damage.

Yes, if your office relies on network printing, as no jobs will be processed until the connection is restored.

No, but using original TNP toners keeps the machine's processing power focused on network tasks rather than managing sensor faults.

Always assign a static IP address outside of your router's DHCP pool to ensure your printer avoids IP conflicts.