Cleaning The Laser Scanner Window - Brother MFC-7420 User Manual

Chapter 11
Cleaning the laser scanner
window
CAUTION
■
Do not use isopropyl alcohol to clean
the laser scanner window.
■
Do not touch the laser scanner window
with your fingers.
1
Before you clean the inside of the MFC,
turn off the MFC's power switch.
Unplug the telephone line cord first, and
then unplug the power cord from the AC
power outet.
2
Open the front cover and pull out the
drum unit and toner cartridge assembly.
WARNING
Just after you have used the MFC,
some internal parts of the machine are
extremely HOT! When you open the front
cover of the MFC, never touch the shaded
parts shown in the diagram below.
11 - 23
CAUTION
To prevent damage to the MFC from static
electricity, do not touch the electrodes
shown below.
3
Gently clean the laser scanner window
by wiping it with a clean soft, dry lint-free
cloth.
Laser Scanner
Window