Cleaning the scanner glass, Cleaning the laser scanner window, Cleaning the laser – Brother MFC-8660DN User Manual
Page 142: Scanner window
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Cleaning the scanner glass
C
a
Turn off the machine’s power switch.
b
Lift the document cover (1).
Clean the white plastic surface (2) and 
scanner glass (3) underneath it with 
isopropyl alcohol on a soft lint-free cloth.
c
In the ADF unit, clean the white plastic 
bar (1) and the scanner glass strip (2) 
under it with isopropyl alcohol on a lint-
free cloth.
Cleaning the laser scanner 
window
C
CAUTION
DO NOT use isopropyl alcohol to clean the 
laser scanner window.
DO NOT touch the laser scanner window 
with your fingers.
a
Turn off the machine’s power switch. 
Unplug the telephone line cord first, and 
then unplug the power cord from the AC 
power outlet.
b
Open the front cover and take out the 
drum unit and toner cartridge assembly.
1
3
2
1
2
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