c4000FS-4020DN

Kyocera FS-4020DN error C4000: Troubleshooting

The Kyocera FS-4020DN error C4000 refers to a communication error with the fuser unit, preventing the device from starting. This fault is often triggered by voltage spikes or persistent paper jams blocking the thermal sensor. Ensure no debris remains in the fuser area before trying a full reset.

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Common causes

  • 1Defective fuser
  • 2Faulty sensor
  • 3Voltage surges
  • 4Paper debris

Solutions

Quick Diagnosis

The FS-4020DN error C4000 is a clear indicator that the fuser is not heating up. A clicking sound upon startup often suggests a blown heat lamp.

Step-by-Step Solution

  1. Power Off: Disconnect from power.
  2. Check: Open the rear cover to check for paper debris.
  3. Cool: Wait 15 minutes.
  4. Restart: Try rebooting.

Prevention and Maintenance

Use original TK-342 kits. Keep the environment humidity stable.

When to Call a Technician

If the C4000 error persists, the thermal fuse might need professional replacement.

Device Technical Specifications

  • Technology: Laser Monochrome
  • Speed: 47 ppm
  • Connectivity: USB 2.0, LAN
  • Compatible Consumable: TK-342 kit
  • Recommended Use: Enterprise
  • Official Drivers

Steps to follow

  1. 1

    Power Off

    Unplug for 15 min.

  2. 2

    Check

    Inspect for jams.

  3. 3

    Restart

    Test startup.

Frequently asked questions

It indicates a fuser temperature control circuit error.

Not dangerous, but it halts operations.

It uses the TK-342 kit.

Minimize paper jams.

Kyocera FS-4020DN error C4000: Troubleshooting | Vimazdev