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Brother ADS-1250W Error AD-02: Sensor Fault

The Brother ADS-1250W error AD-02 occurs when the optical sensor that detects document entry is permanently blocked, either by dirt or a foreign object. This prevents the unit from starting any scan cycle. Knowing what is error AD-02 on Brother ADS-1250W will help you clean internal components and restore scanner functionality.

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Common causes

  • 1Dust on sensor: Dirt buildup on the optical cell.
  • 2Paper scraps: Tiny fragments stuck in front of the sensor.
  • 3Sensor failure: Optical cell has lost its reading capability.
  • 4Adhesive obstruction: Sticky paper residue dirtying the reading area.

Solutions

Quick Diagnosis

If the scanner flags AD-02 without any paper inside, the sensor is likely dirty. Inspect the entry slot; any trapped dust or paper fragment is the immediate cause of the fault.

Step-by-step Solution

  1. Open scanner: Deploy the main cover.
  2. Clean sensor: Using a dry cotton swab, clean the paper sensor area (located near the entry).
  3. Verification: Ensure no compact dust or adhesive residue is obstructing the optical cell.
  4. Restart: Close and restart the scanner.

Prevention and Maintenance

Do not use sticky documents. Wipe the sensor area once a week with a dry cloth to prevent dust buildup that triggers this error.

When to Call a Technician

If the error persists after careful cleaning with compressed air, the internal sensor might have mechanically failed and needs professional support.

Ficha técnica del equipo

  • Technology: Document Scanner
  • Speed: 25 ppm
  • Connectivity: USB / Wi-Fi
  • Consumable: Roller kit
  • Recommended Use: Mobile / Desktop
  • Official Drivers / firmware

Steps to follow

  1. 1

    Open scanner

    Press the opening button to deploy the roller cover.

  2. 2

    Clean sensor

    Use compressed air or a dry cotton swab to clean the paper presence sensor.

  3. 3

    Verification

    Ensure no small particles are hidden in the slot.

Frequently asked questions

It indicates the document detection sensor is blocked or consistently detects paper.

Keep the scanner dust-free and avoid feeding papers with glue residue.

Cleaning the glass and sensors regularly is essential for scanner lifespan.

Yes, they are ideal for cleaning the paper sensor without damaging the device.