31.02CX725de

Lexmark CX725de Error 31.02: Fixing Paper Jams

The Lexmark CX725de error 31.02 indicates a paper jam near the main tray feed area. This occurs when the printer fails to register the paper correctly at the internal sensor, often caused by poor tray alignment.

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Common causes

  • 1Improper paper tray guide alignment.
  • 2Worn feed rollers.
  • 3Debris in the paper feed path.
  • 4Software error mismatch with media size.

Solutions

Diagnóstico rápido

Error 31.02 often triggers when a leaf is caught in the feed path. Inspect the tray and the internal rollers.

Solución paso a paso

  1. Remove tray: Pull it out to access the path.
  2. Clear jam: Gently remove the paper.
  3. Inspect guides: Set guides properly.
  4. Reset: Re-insert and restart.

Prevención y mantenimiento

Keep the paper moisture-controlled. Replace feed rollers if they show wear.

Cuándo llamar a un técnico

If the error occurs without an actual paper jam, the sensor unit may need technical replacement.

Ficha técnica del equipo

  • Technology: Color Laser MFP
  • Speed: 50 ppm
  • Connectivity: USB / LAN
  • Capacity: High volume
  • Consumibles: 74C series
  • Use case: Office productivity
  • Official drivers / firmware

Steps to follow

  1. 1

    Remove tray

    Pull out the paper tray to access the internal path.

  2. 2

    Clear jam

    Remove the jammed paper carefully to ensure no scraps remain inside.

  3. 3

    Sensor check

    Ensure the paper guides are correctly set to the paper size.

Frequently asked questions

Error 31.02 means there is a paper jam in the main paper input area.

Yes, it stops the print queue until the path is cleared.

This printer uses 74C toner series.

Regular maintenance every 50,000 pages helps avoid feed issues.