c-5351bizhub-c4750i

Konica Minolta bizhub C4750i error C-5351 Solution

The Konica Minolta bizhub C4750i error C-5351 occurs when the system detects a failure in the cooling fan motor’s performance. Because the cooling system is vital to safe operation, the machine will trigger this error to prevent overheating and component damage.

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Common causes

  • 1Physical debris: Dust buildup slowing down or stopping the fan blade.
  • 2Motor bearing wear: Mechanical resistance decreasing RPM below thresholds.
  • 3Loose connection: Intermittent power signal to the fan motor.
  • 4Extreme environment: High ambient heat overstressing the cooling system.

Solutions

Diagnóstico rápido

The C-5351 error relates to the cooling system. If the printer is running hot or the fan makes unusual noises, it confirms that the motor is failing or obstructed.

Solución paso a paso

  1. Power off the printer completely and disconnect the main power cable.
  2. Verify that no objects are blocking the rear or side vents.
  3. Use a vacuum to remove dust from the air intake and exhaust vents.
  4. Allow 15 minutes for the unit to settle before rebooting to check for clearance.

Prevención y mantenimiento

Always ensure the bizhub C4750i has proper space around it for airflow. Bi-monthly cleaning of the vents will prevent dust accumulation that taxes the cooling fans.

Cuándo llamar a un técnico

If the fan motor does not spin after these steps, it has likely failed electronically and must be replaced by a service technician.

Ficha técnica del equipo

  • Technology: Color Laser Multifunction
  • Speed: 47 ppm
  • Connectivity: Gigabit Ethernet, USB
  • Capacity: 600-sheet standard tray
  • Compatible Consumables: TNP81 Series Toner
  • Recommended Use: High-output enterprise offices
  • Official drivers / firmware

Steps to follow

  1. 1

    Power down

    Turn off the printer completely and unplug the power cable for 15 minutes to let the internal components cool.

  2. 2

    Check ventilation

    Ensure there are no obstructions around the ventilation grills that might block airflow.

  3. 3

    Reboot the unit

    Plug in and power on the device to test if the fan motor operates correctly.

Frequently asked questions

The C-5351 code indicates a malfunction in the cooling fan motor, typically due to debris or motor degradation preventing the required RPM.

No, you should avoid printing with this error active, as internal overheating can damage sensitive boards and components.

While not directly related to cooling, using genuine consumables keeps printer cycles efficient and reduces unnecessary strain on internal systems.

Maintain a 15 cm clearance around the printer and regularly wipe down external vents to prevent dust buildup.

Konica Minolta bizhub C4750i error C-5351 Solution | Vimazdev