e-22fi-6402

Fujitsu fi-6402 Error E-22: Sensor Problem

The Fujitsu fi-6402 scanner error E-22 is a sign that the document detection system is failing. Unlike the E-21, which is a mechanical feed error, the E-22 is an obstruction of the optical signal of the sensors. This occurs frequently in dusty work environments.

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Common causes

  • 1Accumulation of dust on sensor emitter/receiver.
  • 2Presence of staples or paper residue on the sensor.
  • 3Optical misalignment of the sensor beam.
  • 4Electronic failure of the infrared emitter component.

Solutions

Diagnostic

If the scanner stops and shows E-22, it means the sensor's light beam is blocked. Check for tiny scraps of paper or a dense layer of dust covering the internal sensor glasses.

Step-by-Step Solution

  1. Power Off: Disconnect the device to work safely.
  2. Sensor Inspection: Use a flashlight to find the sensor glasses in the paper path.
  3. Optical Cleaning: Pass a dry swab to remove dust from the presence sensors.
  4. Test: Turn on and perform a single-sheet scan.

Prevention and Maintenance

Perform sensor cleaning every 10,000 scans. Keep the scanner covered when not in use to prevent fine dust from entering.

When to Call a Technician

If the E-22 error still appears after a thorough cleaning of the sensors, it is possible that a sensor is burnt or the control board has a fault.

Technical Data

  • Technology: Double-sided ADF scanner
  • Speed: 80 ppm
  • Connectivity: USB 3.0
  • Daily Cycle: High performance
  • Compatible Consumable: Fujitsu roller and pad kit
  • Recommended Use: Mass digitization centers
  • Official Drivers / firmware

Steps to follow

  1. 1

    Internal access

    Open the scanner cover to access the optical paper sensors.

  2. 2

    Optical cleaning

    Clean the sensor glass with dry air or a non-abrasive cloth.

Frequently asked questions

The E-22 error indicates that the paper pass sensors fail to detect light correctly, usually due to dirt or dust.

Yes, a deep cleaning of the paper path and optical glass usually solves the problem quickly.

Only official cleaner recommended by Fujitsu; do not apply alcohol directly on the sensors.

Avoid scanning very worn documents that shed many paper particles or fibers.