Brother MFC-9330CDW - Manual (Page 98)

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d
Slide the toner cartridge and drum unit
assembly into the machine. Make sure
you match the toner cartridge color to
the same color label on the machine.
BK = Black, C = Cyan,
M = Magenta, Y= Yellow
e
Repeat steps b - d to clean the three
remaining corona wires.
NOTE
When cleaning the corona wires, you do
not have to remove the toner cartridge
from the drum unit.
f
Close the top cover of the machine.
BK
C
M
Y