Brother MFC-9330CDW - Manual (Page 113)

Routine maintenance
99
A
h
Put the belt unit back in the machine.
i
Slide each toner cartridge and drum unit
assembly into the machine, making sure
you match the toner cartridge colors to
the same color labels on the machine.
BK = Black, C = Cyan,
M = Magenta, Y= Yellow
j
Close the top cover of the machine.
BK
C
M
Y