Brother MFC-9120CN - Manual (Page 197)

Troubleshooting and routine maintenance
181
C
e
Unpack the new belt unit and put the
new belt unit in the machine.
f
Slide each drum unit and toner cartridge
assembly into the machine. Make sure
that you match the toner cartridge color
to the same color label on the machine.
Repeat this for all the drum unit and
toner cartridge assemblies.
C-Cyan M-Magenta Y-Yellow K-Black
g
Close the top cover of the machine.
h
K
Y
M
C