u-03fi-4121C

Fujitsu fi-4121C Error U-03: Motor Fault

The Fujitsu fi-4121C error U-03 flags a motor overload or mechanical jam within the automatic document feeder. This stops operations to protect the motor from further damage. Resolve the Fujitsu fi-4121C error U-03 by identifying the source of the mechanical resistance.

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Common causes

  • 1Staples or clips in feeder.
  • 2Degraded gears.
  • 3Stiff or dried rollers.
  • 4Overloaded input tray.

Solutions

Diagnóstico rápido

If the motor makes a buzzing sound before displaying U-03, it is definitely a mechanical jam caused by paper, staples, or dry rollers.

Solución paso a paso

  1. Load check: Ensure the paper stack is within capacity limits.
  2. Debris removal: Check for staples or paper clips in the feed path.
  3. Power cycle: Reboot the scanner to allow the motor to reset.

Prevención y mantenimiento

Periodically replace the feeder roller kit to ensure the motor operates without excessive torque requirements.

Cuándo llamar a un técnico

If no jams are visible and the motor still fails to rotate, the main motor is internally damaged.

Ficha técnica del equipo