My Brother Toner Light Stays On With New Toner (What To Do)


It can be frustrating when your Brother printer's toner light remains illuminated even after you've installed a new toner cartridge.

This issue can occur due to various reasons.

We've prepared a short troubleshooting guide to help you resolve it.

Ensure Unused Cartridge

Confirm that the replacement cartridge is completely unused and hasn't been previously installed in this or any other printer.

This verification is essential because only a new, unused cartridge can trigger the required reset mechanism within the printer. 

Using a cartridge that has been previously used may lead to the persistent Toner LED issue.

Use Genuine Brother Toner

It's highly recommended to use genuine Brother toner cartridges. Each Brother laser printer is precisely calibrated to work with our unique toner formulations at specific temperatures.

Brother laser printers are designed to work perfectly with their unique toner and components, guaranteeing top-notch quality, performance, and reliability at specific temperatures.

Using non-Brother supplies may affect print quality and machine performance.

Confirm Proper Installation

  • Open the printer's front cover and remove the drum and toner assembly.
  • Remove the toner cartridge from the drum.
  • Next, insert the toner into the drum.
  • Finally, put the toner and drum assembly into the machine and close the front cover.

Check Firmware Version

If the issue persists despite using a new, unused genuine Brother toner cartridge, make sure your printer has the latest firmware version

If you've followed all the steps, including checking the firmware version, and the issue still continues, it's time to get in touch with Brother Customer Support.

They can provide you with further assistance and guidance to resolve the problem.


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