u004fi-7700S

Error U004 Fujitsu fi-7700S: Multi-feed Detected

The Fujitsu fi-7700S error U004 is an alert triggered by the scanner's ultrasonic multi-feed detection sensor. This feature is designed to ensure no document is skipped. If this error appears frequently, the friction between pages or the separator pad's condition must be addressed immediately to ensure smooth production.

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Common causes

  • 1Worn separator pad surface.
  • 2Static electricity between document pages.
  • 3Incorrect multi-feed sensor sensitivity setting.
  • 4Failing ultrasonic detection sensor.

Solutions

Diagnóstico rápido

Error U004 indicates an ultrasonic detection of overlapping pages. If you are scanning standard documents, it often signals worn-out separator pads that no longer properly friction-feed individual sheets.

Solución paso a paso

  1. Document Check: Fan your pages thoroughly to release static cling.
  2. Clean Separator: Use a damp cloth with approved cleaner on the separator pad to regain traction.
  3. Sensitivity Check: Adjust the multi-feed detection sensitivity in the software if you are scanning thicker or non-standard media.

Prevención y mantenimiento

Replace the separator pad every 100,000 pages to avoid U004 errors. Keep the environment humidity at acceptable levels to prevent paper-to-paper adhesion.

Cuándo llamar a un técnico

If the U004 sensor fails to clear after maintenance, the ultrasonic transmitter or receiver may be faulty and requires professional servicing.

Ficha técnica del equipo

  • Technology: Production Workgroup Scanner
  • Speed: 100 ppm
  • Connectivity: USB 3.1
  • Capacity: 300 sheets
  • Compatible Consumables: fi-7700S Separator Pad Kit
  • Recommended Use: Enterprise Scanning
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Check tray

    Ensure documents are neatly stacked.

  2. 2

    Clean separator

    Clean the separator pad to improve feed traction.

  3. 3

    Adjust sensitivity

    Check multi-feed detection sensitivity in the PaperStream settings.

Frequently asked questions

The ultrasonic sensor detected more than one page entering the feed path simultaneously.

Fan your documents before scanning and maintain clean feed rollers.

Use authentic Fujitsu replacement roller and pad kits.

If cleaning does not resolve the issue, replace the separator pad as it has likely worn out.