e-104PX940 RFID Industrial

Honeywell PX940 RFID Error E-104: Solutions

The Honeywell PX940 RFID Industrial error E-104 indicates a failure to detect the label media, preventing the printer from tracking the gap or black mark. This immediately pauses print operations. Resolving this issue often requires cleaning the sensor or recalibrating the printer to the current label format.

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Common causes

  • 1Adhesive buildup blocking the optical sensor.
  • 2Media change-over without recalibrating.
  • 3Incorrect sensor threshold settings.
  • 4Optical sensor component failure.

Solutions

Quick Diagnosis

The E-104 error appears when the sensor is unable to distinguish between the label and its backing. If your material is correctly installed, the sensor likely needs recalibration or a quick cleaning.

Step-by-Step Solution

  1. Ensure the label stock is positioned correctly.
  2. Run the internal "Media Calibration" test via the UI.
  3. Clean the sensor path using alcohol-based solution.
  4. Check the sensor threshold levels in the system diagnostic menu.

Prevention and Maintenance

Keep the sensor path clear of residue. Replace the cleaning cotton swab regularly. Genuine Honeywell ribbons prevent the debris buildup that leads to sensor degradation.

When to call a technician

If repeated calibration tests fail to clear E-104, the physical sensor may need professional alignment or replacement.

Technical specifications

  • Technology: Thermal Transfer/Direct Thermal.
  • Performance: Industrial (High speed).
  • Connectivity: Ethernet, USB, Wireless option.
  • Consumables: High-performance ribbons.
  • Recommended use: RFID-enabled labeling.
  • Official drivers / firmware

Steps to follow

  1. 1

    Check sensor area

    Open the printhead and inspect the label sensor for adhesive buildup or debris.

  2. 2

    Auto-calibrate

    Navigate to the settings menu on the touch screen and select Media Calibration.

  3. 3

    Verify media

    Ensure the label media is properly threaded and aligned within the sensor bracket.

Frequently asked questions

This error means the media sensor fails to detect the gap or black mark, preventing the printer from knowing where to start printing.

Yes, print production cannot continue until the sensor recognizes the label position.

The printer uses industrial-grade thermal ribbons including wax, resin, and wax-resin types.

Use a cotton swab and isopropyl alcohol to carefully wipe the optical sensor area once a week.