42-01MS431dn

Lexmark MS431dn error 42-01: Fix & Causes

The Lexmark MS431dn error 42-01 occurs when the print system detects a communication issue with the installed toner cartridge. This error acts as a safeguard to protect the imaging unit. As a high-performance printer, it requires healthy, chip-enabled consumables for optimal operation.

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Common causes

  • 1Incompatible or damaged supply chip.
  • 2Debris on the printer's electrical contacts.
  • 3Improper installation of the cartridge.
  • 4Wear and tear on connection pins.

Solutions

Quick Diagnosis

If you just installed a new or recycled toner, the 42-01 code suggests the chip is not transmitting levels correctly to the printer logic.

Step-by-Step Solution

  1. Remove: Take out the toner and imaging unit.
  2. Clean: Gently wipe the metallic chip contacts.
  3. Verify: Check that the chip is flush and seated correctly.
  4. Reinstall: Reinsert until firmly seated.

Prevention and Maintenance

Do not touch the cartridge chip contacts, as oils from skin cause connection errors. Use reliable original or high-quality remanufactured cartridges.

When to Call a Technician

If the error repeats with multiple original units, the printer's internal connection pins may be damaged.

Device Technical Specifications

  • Technology: Laser Monochrome
  • Speed: Up to 42 ppm
  • Connectivity: USB, Ethernet, WiFi
  • Compatible Consumable: Lexmark MS431 series (55B2000/55B2H00)
  • Recommended Use: Enterprise
  • Official drivers / firmware

Steps to follow

  1. 1

    Remove toner

    Carefully pull out the toner cartridge.

  2. 2

    Inspect

    Clean the chip contacts with a soft cloth.

  3. 3

    Reinstall

    Slide the cartridge until it clicks.

Frequently asked questions

It signifies a communication failure with the toner chip.

Cleaning the chip contacts often resolves this.

Lexmark MS431 series (55B2000, 55B2H00).

Keep the connection pins dust-free.

Lexmark MS431dn error 42-01: Fix & Causes | Vimazdev