c-3701bizhub C4000i

Konica Minolta bizhub C4000i C-3701 Error: Fix

The Konica Minolta bizhub C4000i error C-3701 indicates a network communication failure over the Ethernet interface. This prevents the printer from receiving jobs or interacting with scan-to-network folders. Troubleshooting usually requires checking local infrastructure and IP settings. The bizhub C4000i is designed to operate seamlessly in corporate network environments.

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Common causes

  • 1Damaged or low-quality network cabling.
  • 2Local IP address conflict on the network.
  • 3Malfunctioning network switch port.
  • 4Internal network interface failure.

Solutions

Quick Diagnosis

Error C-3701 usually suggests that the network interface card is failing to establish a link. Check the port LEDs on the back of the machine; if there is no activity, the network cable or the local switch is likely the culprit.

Step-by-Step Solution

  1. Physical Cable Test: Swap the cable with a certified Cat6 ethernet cable.
  2. Router Reset: Cycle power to your network hub to reset the DHCP server logic.
  3. Manual Setup: Check if your IP/Gateway/Subnet masks are correct in the network settings menu.
  4. Connectivity Test: Try pinging the printer IP address from a computer on the same sub-network.

Prevention and Maintenance

Use high-quality shielded Ethernet cables for long runs. Always keep your firmware current, as updates often contain patches for network protocol compatibility.

When to Call a Technician

If you have verified the network infrastructure (cable, switch, IP configuration) and the error persists, the integrated NIC might have hardware failure.

Device Technical Specifications

  • Technology: Color Laser Multifunction
  • Speed: 40 ppm
  • Connectivity: Gigabit LAN / USB 2.0
  • Feed Capacity: 550 sheets
  • Compatible Consumables: Original TNP-79 Series
  • Usage: Corporate High-Volume
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Check Cables

    Ensure the Ethernet cable is securely plugged in and the port indicators are flashing.

  2. 2

    Reset Network

    Restart your network switch or router to clear any local connectivity conflicts.

  3. 3

    Verify IP

    Check the printer menu to confirm a valid IP address within the local network range.

Frequently asked questions

This code identifies a network communication failure that prevents the device from sending or receiving data.

Yes, restarting the printer along with your router is the best way to resolve temporary network glitches.

No, C-3701 is purely a networking error; it has nothing to do with print consumables like TNP-79.

You can print a configuration sheet directly from the printer network information menu.