Description of Problem 100000023548
Why does the Toner LED stay on after I replaced the toner
cartridge?Description of Solution 200000030038
1. Verify you
installed a new, unused, genuine Brother toner cartridge (TN420 or TN450) from a
sealed foil bag that had never been installed in this or any other machine.
When replacing the toner
cartridge, you MUST install a brand new, unused toner cartridge (TN420 or TN450)
in order to reset the toner status. Do NOT install a previously used
cartridge that was already installed into another machine or a TN starter
cartridge that comes with the machine.
Our toner cartridges are
manufactured with a reset lever that moves when installed into the
machine. The movement of the lever mechanically 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
2. Verify you are
using genuine Brother toner.
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.
3. Verify the drum
unit and toner cartridge are installed correctly by performing the following
a. Open the front
cover and remove the drum and toner assembly. Be sure to place the drum
and toner assembly on a piece of paper in case of spilled or scattered
b. 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. Handle the toner cartridge
NOTE: If toner scatters on hands or clothing, immediately wipe it
off or wash it with cold water.
c. 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.
d. Reinstall the
toner and drum assembly into the machine and close the front cover.
4. If the issue
continues and you installed a new, unused genuine Brother toner cartridge (TN420
or TN450) from a sealed foil bag, verify the machine has the most recent
firmware version by downloading and running the Brother Firmware Update
Tool. Refer to solution How
do I perform a firmware update or firmware upgrade on my Brother
If you have the most recent firmware version and the issue
continues, contact Brother Customer Service by calling 1-877-Brother
(1-877-276-8437) Monday through Friday, excluding