42.10CX431adw

Lexmark CX431adw Error 42.10: Troubleshooting Guide

The Lexmark CX431adw error 42.10 signals that the printer's detected paper size does not match the job settings. Understanding how to fix 42.10 error Lexmark units saves time when switching between different media types. This simple guide helps you realign your printer configuration.

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Common causes

  • 1Misaligned paper.
  • 2Wrong tray settings.
  • 3Dirty sensors.
  • 4Loose guides.

Solutions

Diagnóstico rápido

Error 42.10 points directly to the paper input tray. Check if the paper guides are securely locked against the stack.

Solución paso a paso

  1. Pull out the paper tray.
  2. Adjust guides to match your paper size.
  3. Reload the paper stack.
  4. Confirm settings on the screen.

Prevención y mantenimiento

Do not overfill the tray. If using letterhead or labels, ensure the printer settings match the actual media type used.

Cuándo llamar a un técnico

If settings are correct and the error persists, the paper width sensor inside the tray may be faulty.

Ficha técnica del equipo

Steps to follow

  1. 1

    Check Tray

    Ensure the paper size in the tray matches the setting on the control panel.

  2. 2

    Align Guides

    Adjust the side paper guides to fit the paper firmly but not tightly.

  3. 3

    Set Size

    Go to settings, select the tray, and confirm the correct paper size.

Frequently asked questions

It is a paper size mismatch where the sensor detects a different paper dimension than what is configured.

No, it is a common configuration error easily fixed by the user.

Uses 78C series toner cartridges.

Always verify tray size settings after loading new paper.