U3fi-800R

Fujitsu fi-800R Error U3: Jam Troubleshooting

The Fujitsu fi-800R error U3 is the standard code for a document jam within the path. It occurs when paper fails to pass the exit sensors in the designated time, stopping the scanner to protect mechanical parts. Understanding why my Fujitsu fi-800R error U3 occurs helps you clear paper without tearing.

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Common causes

  • 1Staples or clips in documents.
  • 2Worn-out rollers.
  • 3Out-of-spec paper weight.
  • 4Paper dust buildup.

Solutions

Quick Diagnosis

If documents stop mid-way or wrinkle, error U3 triggers. Check the paper path for obstructions.

Step-by-step Solution

  1. Open the front document guide.
  2. Gently remove the jammed sheet in the direction of feed.
  3. Check for leftover paper scraps in the roller area.
  4. Close and resume.

Prevention and Maintenance

Use the official Fujitsu cleaning kit. Paper dust causes jam-prone rollers.

When to call a technician

If frequent jams occur with standard paper, replace the rollers.

Technical Specifications

  • Technology: High-speed scanner.
  • Speed: 40 ppm.
  • Consumable: Roller replacement kit.
  • Recommended usage: Office environment.
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Open ADF

    Open the document guide to access the paper path.

  2. 2

    Clear jam

    Gently pull any stuck documents out.

  3. 3

    Close guide

    Ensure the guide clicks back into place.

Frequently asked questions

A sensor detected a paper blockage in the ADF path.

Yes, excessive force can damage internal rollers.

Standard copy paper. Avoid overly thick cardstock.

Clean rollers after recurrent jams.