c-003TM-L90

Epson TM-L90 error C-003: Sensor troubleshooting

The Epson TM-L90 error C-003 indicates a paper sensor failure, usually caused by dust or misaligned media. Learning how to fix C-003 error Epson TM-L90 involves cleaning the sensor path and reloading the paper. This ensures your POS system remains operational and responsive.

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Common causes

  • 1Dust on optical sensor.
  • 2Misaligned paper.
  • 3Worn-out sensor hardware.

Solutions

Diagnóstico rápido

If the printer is not detecting paper, the C-003 alert appears. Inspect the optical sensor gap for debris.

Solución paso a paso

  1. Open the media cover.
  2. Clean the sensor.
  3. Reload the roll.
  4. Restart the printer.

Prevención y mantenimiento

Keep the printer in a clean environment and clean sensors monthly.

Cuándo llamar a un técnico

If the error remains, the sensor might be failing and requires replacement.

Ficha técnica del equipo

  • Technology: Thermal POS
  • Speed: 150 mm/s
  • Connectivity: USB, Serial
  • Consumables: 80mm thermal rolls
  • Drivers

Steps to follow

  1. 1

    Clean sensor

    Use compressed air to clear dust from the sensor area.

  2. 2

    Check paper

    Remove the roll and ensure the leading edge is straight.

  3. 3

    Power reset

    Restart the device to recalibrate the paper sensor.

Frequently asked questions

It means the sensor cannot detect paper or the paper is misaligned.

Yes, as it stops all printing operations in your POS station.

High-quality standard thermal paper without heavy watermarks.

Keep the interior free of dust by cleaning it once a month.