54.01C792de

Lexmark C792de error 54.01: Sensor Troubleshooting

The Lexmark C792de error 54.01 appears when the input tray sensor system fails to detect the presence or the correct size of paper. This technical fault can interrupt print workflows in corporate environments. Generally, error 54.01 is caused by a misaligned tray or dust buildup on the sensor.

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Common causes

  • 1Tray misalignment
  • 2Dust accumulation on optical sensors
  • 3Paper sensor actuator jammed
  • 4Size guide wear

Solutions

Diagnóstico rápido

If the panel displays 'Error 54.01' when attempting to print, check that the tray is pushed in firmly until it clicks. If the problem persists, the sensor actuator might be obstructed.

Solución paso a paso

  1. Remove the paper tray completely.
  2. Use compressed air to clean the internal cavity where the presence sensor is located.
  3. Check that the paper guides are correctly adjusted to the paper width.
  4. Restart the printer with the tray correctly seated.

Prevención y mantenimiento

Clean feed rollers with a slightly damp lint-free cloth every 10,000 pages. Avoid overloading the tray to prevent unnecessary pressure on plastic sensors.

Cuándo llamar a un técnico

If the error 54.01 continues after cleaning the sensor area and verifying the tray alignment, the sensor actuator or the control board may require professional replacement.

Ficha técnica del equipo

  • Technology: Color laser.
  • Speed: 50 ppm.
  • Connectivity: Gigabit Ethernet, USB.
  • Compatible consumables: Lexmark C792 series toner.
  • Recommended use: High duty cycle.
  • Official drivers / firmware

Steps to follow

  1. 1

    Remove tray

    Pull the paper tray out fully.

  2. 2

    Clean sensor

    Use compressed air on the sensor.

  3. 3

    Check guides

    Ensure paper guides are snug.

Frequently asked questions

This occurs when the paper size sensor doesn't detect the tray.

No, it's a sensor calibration/alignment issue.

Lexmark C792 series.

Keep rollers clean of debris.