c-5151bizhub C258

Konica Minolta bizhub C258 error C-5151: Fixes

The Konica Minolta bizhub C258 error C-5151 indicates a critical failure in the fuser unit drive motor. This code triggers when the system detects the fuser cannot rotate at the required speed or torque. Fixing this requires checking for physical roller locks or electrical motor faults.

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Common causes

  • 1Seized rollers: Fuser bearings locked due to extreme heat.
  • 2External obstruction: Paper jammed at fuser output blocking physical rotation.
  • 3Motor electrical failure: Internal motor windings burnt due to overload.
  • 4Worn gears: Broken gear teeth preventing torque transmission.

Solutions

Diagnóstico rápido

This error is purely mechanical. The machine attempts to rotate the fuser and, detecting excessive resistance or no response, locks down for safety. Many users search how to fix C-5151 error on Konica Minolta bizhub C258 when they hear strange grinding noises coming from the side panel before the code appears.

Solución paso a paso

  1. Unplug the device from the power outlet.
  2. Open the right side door and inspect the fuser unit.
  3. Manually rotate the gears to ensure no mechanical locking exists due to jammed paper or seized rollers.
  4. Check the fuser motor cabling for loose terminals or heat-damaged wiring.

Prevención y mantenimiento

Gear maintenance is key. Apply high-temperature silicon grease to the drive gears every 200,000 copies and avoid using excessively thick paper stocks that stress the rotation mechanism.

Cuándo llamar a un técnico

If the motor remains unresponsive or produces a constant clicking noise after clearing the rollers, the fuser motor is internally damaged. Repairing this requires disassembling the side chassis and replacing the original component.

Ficha técnica del equipo

  • Technology: Color Laser, stepper motor drive
  • Speed: 25 ppm
  • Compatible Consumable: Fuser unit bizhub C258/368 series
  • Maintenance: Gear lubrication every 200k prints
  • Usage: Corporate
  • Official Drivers / firmware

Steps to follow

  1. 1

    Check for physical jams

    Open the side door and manually rotate the fuser roller to verify that it is not mechanically locked.

  2. 2

    Check motor connection

    Ensure the fuser drive motor connector has no damaged or disconnected wires.

  3. 3

    Reset error code

    After clearing physical obstructions, power cycle the unit. If it persists, use the service mode to reset the error.

Frequently asked questions

First, verify that the fuser unit rotates freely by hand. If it is jammed, clean the rollers and remove any paper debris.

It depends. If the issue is caused by an external jam blocking the rotation, you can resolve it yourself. If it is an electric motor failure, you will need professional assistance.

Low-quality toner melting onto the rollers can create enough friction to overload and block the drive motor, causing this error.

Perform preventative maintenance on the fuser unit every 100,000 prints and always use original consumables to avoid buildup.