c-5351bizhub C3320i

Konica Minolta bizhub C3320i error C-5351: Guide

The Konica Minolta bizhub C3320i error C-5351 is a critical service code indicating an abnormal temperature inside the fuser unit. This error triggers when sensors detect that the heating roller fails to reach the required operating temperature or has exceeded safety limits. Since this involves high-risk components, do not force a reboot if the error persists after a prolonged cool-down.

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Common causes

  • 1Thermal sensor (thermistor) failure.
  • 2Fuser heating lamp rupture.
  • 3Electrical surge within the unit.
  • 4Expired fuser roller lifespan.

Solutions

Quick Diagnosis

Error C-5351 signals a failure in the toner fixing system. It is a hardware fault.

Step-by-Step Solution

  1. Power off the device completely using the main switch.
  2. Disconnect the power cable for 15 minutes to allow the fuser to cool.
  3. Reconnect and attempt to power up.
  4. If the code persists, contact your service provider.

Prevention and Maintenance

Always use the correct paper weight settings to prevent stressing the fuser.

When to call a technician

Contact a certified technician immediately if the code returns, as the thermistor or heating lamps have likely failed.

Device Specs

  • Technology: Color Laser.
  • Speed: 33 ppm.
  • Connectivity: Gigabit Ethernet, USB 2.0.
  • Consumables: Fuser Unit, TNP-79 Toner.
  • Link drivers: Download at official site

Steps to follow

  1. 1

    Power off

    Disconnect from power for 10 minutes.

  2. 2

    Inspect fuser

    Check if toner buildup is blocking the path.

  3. 3

    Restart

    Power on to check if code clears.

Frequently asked questions

This code indicates a thermal failure in the fuser unit.

Usually yes, as it involves replacing critical parts.

The fuser unit has a service life and needs replacement.

No, the machine locks out for safety.