Brother MFC-9760 사용자 매뉴얼

You can keep the machine in optimum condition by cleaning it on a regular basis. It is a good idea 
to clean the drum unit during this routine. Avoid using thinners or other organic solvents to clean the 
machine and do not use water.

Switch off and unplug the machine and lift the document cover. Clean the glass platen and white film 
with isopropyl alcohol on a lint-free cloth.

Lift the ADF unit. Clean the white roller, and the glass strip under the roller with isopropyl alcohol 
on a lint-free cloth.