Brother MFC-9420CN - Manual (Page 150)

Troubleshooting and routine maintenance
C - 25
C
6
Place the OPC belt cartridge on a flat
surface and cover the shiny green OPC
belt with a piece of paper to prevent
exposing it to light.
7
Open the front cover of the machine.
8
Take all the toner cartridges out of the
machine.
9
Clean the surface of the laser unit with a
dry soft, lint-free cloth.
0
Open the laser glass cover.
A
Clean the surface of the laser glass with
a dry soft, lint-free cloth.
B
Close the laser glass cover.
C
Put all the toner cartridges and the OPC
belt cartridge back in the machine. Do
not try to push or lock the new toner
cartridge in. It must rest loosely in the
guide rails.
D
Close the front cover and the inside
cover, and then close the scanner unit.
E
Plug the machine’s power cord back into
the AC power outlet first, and then plug
in the telephone line cord. Turn on the
machine’s power switch.
CAUTION
■
Do not touch the OPC belt surface with
your hands.
■
Do not expose the OPC belt cartridge
to bright room light or sunlight (a light
source of 74.3 footcandles or 800 lux)
for more than two minutes to avoid
damaging the belt.
WARNING
Do not use volatile liquids such as thinner
or benzene for cleaning the laser glass.
This might cause poor print quality.