Brother MFC 9840CDW - Manual (Page 192)

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f
Remove the orange protective cover.
g
Hold the handle of the toner cartridge
and slide the toner cartridge into the
drum unit. Make sure that you match the
toner cartridge color to the same color
label on the drum unit, and make sure
that you fold down the toner cartridge
handle (A) once the toner cartridge is in
place. Repeat this for all the toner
cartridges.
1 C - Cyan
2 M - Magenta
3 Y - Yellow
4 K - Black
h
Push the drum unit in until it stops.
i
Close the front cover of the machine.
A
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2
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