35e120n

Lexmark E120n error 35: Solution and Diagnosis

The Lexmark E120n error 35 occurs when the printer fails to identify the installed toner cartridge correctly. This issue often appears after a supply change or due to dirt on the cartridge chip. Most of the time, properly reseating the consumable resolves the error state.

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Common causes

  • 1Contaminated or dirty toner chip.
  • 2Cartridge poorly seated in receptacle.
  • 3Damaged toner connector pins.
  • 4Defective third-party cartridge chip.

Solutions

Quick Diagnosis

If the error lights flash after a toner change, error 35 indicates a chip-to-pin communication failure.

Step-by-Step Solution

  1. Remove the toner cartridge.
  2. Inspect the electronic chip for dirt or damage.
  3. Reinsert the cartridge until you hear a click.
  4. Restart the printer.

Prevention and Maintenance

Do not force the toner tray when closing. Perform annual internal dusting to prevent toner buildup on connectors.

When to Call a Technician

If the error persists with a new cartridge, the internal cartridge connector pins might be bent.

Technical Data

  • Technology: Laser
  • Speed: 20 ppm
  • Connectivity: USB 2.0
  • Consumable: E120/E120n Cartridge
  • Monthly Cycle: 8,000 pages
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Open cover

    Open the top lid to access the cartridge.

  2. 2

    Reinstall toner

    Remove and firmly reinsert the cartridge.

  3. 3

    Clean sensor

    Clean the optical sensor with a dry cotton swab.

Frequently asked questions

It means the printer cannot detect the toner cartridge or it is empty.

Yes, printing is suspended until a functional cartridge is detected.

It uses E120 series cartridges. Original supplies are recommended to avoid chip errors.

Cleaning the mirrors and toner sensor helps prevent false readings.