af-03ADS-1250W

Brother ADS-1250W error AF-03: Sensor failure

The Brother ADS-1250W error AF-03 is a sensor failure alert. This error indicates that the scanner cannot confirm the presence or absence of paper accurately. It is usually caused by dust buildup on the optical emitter/receiver. This is a common issue that can often be resolved with preventive cleaning.

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Common causes

  • 1Accumulation of paper dust on the sensor lens.
  • 2Obstruction by adhesive residue on the sensor.
  • 3Electronic failure of the IR emitter/receiver.
  • 4Sensor shifted from its original position by vibration.

Solutions

Diagnóstico rápido

The AF-03 code means the paper end sensor is permanently active or not detecting the document. If there is no paper in the tray and the scanner continues to show an error, it is likely the sensor lens is covered by dust.

Solución paso a paso

  1. Cleaning: Open the tray and blow compressed air into the area where the sensors are located.
  2. Inspection: Ensure there is no adhesive residue, labels, or sticky dust on the lens.
  3. Reboot: Power off and on to force a sensor recalibration.
  4. Test: Try performing a test scan with a clean sheet.

Prevención y mantenimiento

Clean sensors monthly with a dry air blower. Avoid using sheets with glue residues that can transfer to internal components.

Cuándo llamar a un técnico

If after cleaning the sensor with air and visual confirmation there are no obstructions, the AF-03 error persists, meaning the sensor is defective and must be replaced.

Ficha técnica del equipo

  • Tecnología: Optical paper detection scanner
  • Velocidad/rendimiento aproximado: 25 ppm
  • Conectividad: Wireless/USB
  • Capacidad de alimentación: 20 sheets
  • Consumible compatible: None (roller maintenance only)
  • Uso recomendado: Personal digitization
  • Drivers / official firmware

Steps to follow

  1. 1

    Cleaning

    Open the tray and blow compressed air into the sensor area.

  2. 2

    Inspection

    Ensure there is no dust or label residue on the lens.

  3. 3

    Reboot

    Power off and on to recalibrate sensors.

  4. 4

    Test

    Try performing a test scan.

Frequently asked questions

This error means the paper end sensor is unresponsive or remains active even when no sheets are loaded.

A jam is AF-01; AF-03 is a failure of the sensor component itself.

Careful cleaning might work; if the sensor is internally damaged, it requires professional replacement.

None, but using clean paper free of adhesive residues will prevent sensors from becoming dirty.