Brother HL-4140CN - Default Chapter; Replacing the Waste Toner Box

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Replacing the waste toner boxA
Model name: WT-300CL
A new waste toner box can print
approximately 50,000 A4 or Letter size
single-sided pages.
Replace Parts
WT Box End Soon
A
If the LCD shows Replace Parts
WT Box End Soon, it means the waste
toner box is near the end of its life. Buy a new
waste toner box and have it ready before you
get a Replace WT Box message.
Replace WT Box A
When the Replace WT Box message
appears on the LCD, you will need to replace
the waste toner box:
WARNING
DO NOT put the waste toner box into a fire.
It could explode.
Be careful not to spill the toner. DO NOT
inhale or allow it to get into your eyes.
IMPORTANT
DO NOT reuse the waste toner box.
a Make sure that the machine is turned
on.
b Press the front cover release button and
then open the front cover.