Answer to your Frequently Asked Question:

Printer Friendly
Description of Problem 100000029954

The message "Toner Low" continues to appear after I replaced the toner cartridge. What can I do?


Description of Solution 200000038548

1.    Verify you installed a NEW, unused, out of the box toner cartridge (TN420 or TN450) from a sealed foil bag.


When replacing the toner cartridge, you should install a brand new, out of the box toner cartridge to reset the toner status.  You should NOT install a previously used cartridge that was already installed into another machine or a TN starter cartridge that comes with the machine.


Brother toner cartridges are manufactured with a reset lever that moves when installed into the machine.  The movement of the lever automatically triggers the machine to reset the toner status.  If a used cartridge or a TN starter cartridge is installed into a machine, it will NOT trigger the machine to reset the toner status.


Brother strongly recommends that customers use only genuine Brother drum units and/or toner cartridges.  Each Brother laser printer is designed to operate at pre-set temperatures that are matched exactly to each of our individual toner formulations.  Each individual component is designed to work with the other to ensure quality and reliability.  Using non-Brother supplies may affect the hardware performance, print quality and machine reliability.  The Brother limited warranty does not apply to any problem that is caused by the use of third-party drum units, toner cartridges, or toner.


2.    Verify the drum unit and toner cartridge are installed correctly:


  1. Open the front cover and remove the drum and toner assembly.  Place the assembly on a piece of paper in case of spilled or scattered toner.



  1. Remove the toner cartridge from the drum by holding down the green lock lever on the left side of the drum unit and lifting the toner out.



NOTE:  Handle the toner cartridge carefully.  If toner scatters on hands or clothing, immediately wipe it off or wash it with cold water.


  1. Reinstall the toner into the drum. Be sure it clicks into place.  If you put it in properly, the green lock lever will lift automatically.



  1. Reinstall the toner and drum assembly into the machine and close the front cover.


3.    Confirm if the Toner Low message continues to appear on the display.


-      If the Toner Low message no longer appears, the issue is resolved.


-      If the Toner Low message still appears on the display and you installed a new, unused toner cartridge (TN420 or TN450) and your machine is within warranty, you can locate a Brother Authorized Service Center (ASC) in your area by clicking on the following link: or contact Brother Customer Service by calling 1-877-Brother (1-877-276-8437) Monday through Friday, excluding holidays.

Was this helpful?
Please help us to improve our services by letting us know if this information was helpful: