Description of Problem 100000034376
Why does the Toner LED continue to flash or the Status Monitor continue to
display "Toner Low" after I replaced the toner
cartridge?Description of Solution 200000044063
you installed a new, unused, toner cartridge (TN420 or TN450) from a sealed foil
bag that had never been installed in this or any other machine.
replacing the toner cartridge, you MUST install a brand new, unused toner
cartridge 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.
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 status.
you are using genuine Brother toner.
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.
the drum unit and toner cartridge are installed correctly by performing the
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
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 carefully. If toner scatters on hands or
clothing, immediately wipe it off or wash it with cold water.
the toner into the drum. Be sure it clicks into place. If you put it
in properly, the green lock lever will lift automatically.
the toner and drum assembly into the machine and close the front
the issue continues and you installed a new, unused toner cartridge (TN420 or
TN450) from a sealed foil bag, perform the following steps to resolve the
the most recent version of the firmware is installed on the Brother machine by
downloading and running the Brother Firmware Update Tool. Refer to the
solution – "How
do I perform a firmware update or firmware upgrade on my Brother machine?"
the issue continues after ensuring the firmware is the most recent version,
contact Brother Customer Service by calling 1-877-Brother (1-877-276-8437)
Monday through Friday, excluding holidays.