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Brother MFC-L9570CDW No Toner Detected: Troubleshooting

The Brother MFC-L9570CDW No Toner Detected error appears when the printer cannot establish a successful data link with the toner cartridge. Frequently asked as why is my printer not detecting toner?, this issue is usually rectified by cleaning the chip's electrical contacts or ensuring the cartridge is fully snapped into the drum assembly. Follow these troubleshooting steps to avoid unnecessary hardware replacement.

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Common causes

  • 1Dirty Contacts: Toner powder buildup on chip terminals.
  • 2Improper Seating: Cartridge not locked into the drum unit properly.
  • 3Faulty Chip: Dead toner chip not responding to board requests.
  • 4Bent Pins: Physical damage to the internal printer connection pins.

Solutions

Diagnóstico rápido

The No Toner Detected message is triggered when the machine's internal pins fail to sense the resistance or data signal of the toner chip. If the cartridge appears clean, the issue often stems from a slight misalignment during installation.

Solución paso a paso

  1. Pull the drum and toner assembly out of the printer.
  2. Gently wipe the gold contacts on the toner cartridge chip with a dry, soft cloth.
  3. Check the printer's internal pins for any physical damage or bending.
  4. Click the toner firmly into the drum unit and reinstall it in the printer.

Prevención y mantenimiento

Always stick to genuine TN436 cartridges when possible. If you must use compatible toners, choose reputable brands known for stable chip electronics to minimize connection errors.

Cuándo llamar a un técnico

If the error remains after trying multiple cartridges, the printer's internal connection board might be faulty. A technician will need to inspect the internal contact pins and the main communication bus.

Ficha técnica del equipo

  • Technology: Color Laser Multifunction
  • Print Speed: Up to 33 ppm
  • Connectivity: Gigabit Ethernet, Wi-Fi
  • Input Capacity: 250 sheets
  • Compatible Consumable: TN436 Series
  • Recommended Usage: Professional printing
  • Drivers / firmware official

Steps to follow

  1. 1

    Remove Assembly

    Pull the drum and toner assembly out of the printer.

  2. 2

    Clean Chip

    Gently wipe the gold contacts on the toner cartridge chip with a dry, soft cloth.

  3. 3

    Reseat Cartridge

    Click the toner firmly into the drum unit and reinstall it in the printer.

Frequently asked questions

It usually indicates that the electrical contacts are dirty or the cartridge is improperly seated in the drum unit.

Yes, if the toner's electronic chip is malfunctioning, the printer cannot communicate with it.

While many work, some low-quality compatible toners contain inconsistent chips that lead to repeated detection errors.

Yes, performing a simple wipe during cartridge changes prevents debris from interfering with signal transfer.

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