42.02B3442dw

Lexmark B3442dw error 42.02: Troubleshooting Guide

Lexmark B3442dw error 42.02 is a configuration notification indicating that the requested paper size for a job does not match the size of paper currently detected in the input tray. This occurs frequently when switching paper formats. Learning to configure paper size for Lexmark B3442dw is the key to resolving this conflict.

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Common causes

  • 1Poor guide adjustment: Paper shifting in the tray.
  • 2Configuration mismatch: Software requesting Letter, tray containing A4.
  • 3Debris on sensor: Dust/toner blocking the tray's internal width switches.
  • 4Incorrect loading: Piled paper not resting flat in the tray.

Solutions

Quick Diagnostics

The 42.02 code is a system alert for a size mismatch. When this happens, the printer refuses to print to ensure document fidelity. Check the physical paper in the main tray and verify if your document setting matches the physical sheet.

Step-by-Step Solution

  1. Adjust guides: Open the paper tray and adjust the side guides to match your paper width exactly.
  2. Check settings: Go to the printer menu and confirm that the paper size matches the physical paper loaded.
  3. Proper loading: Ensure the paper stack does not exceed the maximum fill mark in the tray.
  4. Re-print: Send your document again after confirming that the sizes are aligned.

Maintenance and Prevention

Set your printer's tray to 'Universal' if you use mixed paper types; this allows the machine to scan the physical width automatically. Clean the internal paper sensors with compressed air occasionally to maintain accurate detection.

When to Call a Technician

If you have verified the configuration and the error continues to display an incorrect paper size, the internal width sensor on the tray may be faulty or disconnected.

Technical Specifications

  • Technology: Monochrome Laser
  • Throughput: 42 ppm
  • Connectivity: USB and Ethernet
  • Input capacity: 350 sheets standard
  • Compatible supplies: 50D series toner
  • Recommended usage: Office workgroups
  • Official drivers / firmware

Steps to follow

  1. 1

    Adjust guides

    Open the paper tray and adjust the side guides to match your paper width exactly.

  2. 2

    Check settings

    Go to the printer menu and confirm that the paper size matches the physical paper loaded.

  3. 3

    Proper loading

    Ensure the paper stack does not exceed the maximum fill mark in the tray.

  4. 4

    Re-print

    Send your document again after confirming that the sizes are aligned.

Frequently asked questions

The 42.02 error indicates a mismatch between the paper size setting and the actual paper detected in the tray.

No, the system halts printing to prevent toner from spilling or printing outside the document margins.

Always use standard paper sizes. The 50D toner series works best with standard letter or A4 media.

Always ensure the side paper guides are set securely against the paper stack before closing the tray.