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Brother ADS-4900W error AD-004: Tray issue

The Brother ADS-4900W error AD-004 occurs when the feed system fails to detect documents properly. If you are wondering why does my Brother ADS-4900W show error AD-004, check if the side guides are too loose or if your sheets are inserted unevenly. Follow this guide to adjust your tray setup and clear the error efficiently.

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Common causes

  • 1Documents with bent corners blocking sensor detection.
  • 2Paper guides misaligned with document width.
  • 3Debris buildup inside the tray paper presence sensor.
  • 4Worn-out pickup rollers preventing initial engagement.

Solutions

Diagnóstico rápido

The AD-004 code indicates a missing initial detection signal. If you stack paper and the rollers do not start, check the paper presence sensor inside the input tray.

Solución paso a paso

  1. Remove all paper from the input tray.
  2. Adjust guides to match your document width exactly.
  3. Fan the stack to ensure no pages are stuck due to static electricity.
  4. Re-insert paper ensuring the leading edge contacts the pickup roller.

Prevención y mantenimiento

Keep the tray area free of dust. Ensure your paper weight is within compatible range (typically 40-200 g/m²). Worn-out pickup rollers often cause feed failures.

Cuándo llamar a un técnico

If the AD-004 error persists after you have perfectly aligned the paper, the internal tray sensor may be blocked or faulty, requiring professional service.

Ficha técnica del equipo

  • Technology: Automatic Document Feeder
  • Capacity: Up to 100 sheets
  • Guides: Side-adjustable
  • Compatible consumables: ADS-4000 series roller kit
  • Recommended usage: Batch document scanning
  • Drivers / official firmware

Steps to follow

  1. 1

    Adjust guides

    Slide the paper guides until they gently touch the document edges.

  2. 2

    Correct loading

    Remove the paper and ensure corners are not bent or folded.

  3. 3

    Check sensors

    Ensure nothing is blocking the paper presence sensor in the tray.

  4. 4

    Retry

    Reload the paper and press the scanner's start button.

Frequently asked questions

The AD-004 error signifies that the scanner does not detect documents in the tray or the paper is misaligned for the initial sensor.

Yes, this error is typically resolved by correctly aligning the documents with the side guides in the tray.

The separation roller is the key consumable. If it becomes worn smooth, paper will slip, leading to constant feed errors.

They should be adjusted snugly against the paper without bending it. If too loose, paper will tilt, causing this error.