126.01CX735adse

Lexmark CX735adse error 126.01: Troubleshooting

The Lexmark CX735adse error 126.01 occurs when the system cannot correctly identify the paper size in the input tray. Misaligned guides or debris near the sensor are the primary causes. This is easily resolved by checking the paper loading setup.

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Common causes

  • 1Misaligned guides: Tray size detection error.
  • 2Debris: Blocking sensor path.
  • 3Sensor failure: Internal electronic error.
  • 4Worn rail: Improper contact with switch.

Solutions

Diagnóstico rápido

The 126.01 error is a sizing fault. Check if your paper guides are locked in the correct position for the loaded paper.

Solución paso a paso

  1. Pull the paper tray out.
  2. Verify the guides align with the paper.
  3. Clean the rear sensor area.
  4. Reinsert the tray.

Prevención y mantenimiento

Avoid overfilling the tray. Clean the pickup rollers every 50k pages.

Cuándo llamar a un técnico

If the error doesn't clear after adjusting the guides, the tray sensor may be physically broken.

Ficha técnica del equipo

  • Technology: Multifunction Color Laser
  • Speed: 50 ppm
  • Connectivity: Wi-Fi / Ethernet
  • Capacity: 2,300 sheets
  • Consumables: 735 series
  • Recommended use: Enterprise
  • Official drivers

Steps to follow

  1. 1

    Remove tray

    Pull the tray out completely.

  2. 2

    Align guides

    Ensure the paper guides are firmly set.

  3. 3

    Reset

    Insert back and check status.

Frequently asked questions

The paper tray size sensor is detecting a discrepancy.

Adjust guides and ensure proper paper loading.

735 series Lexmark toner.

Don't overload trays and clean rollers.