Brother MFC-4300 사용자 설명서

T R O U B L E S H O O T I N G   A N D   R O U T I N E   M A I N T E N A N C E      

You can keep your MFC 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 MFC and do not use water.

Unplug the telephone line, and then unplug the power cord.
When you reconnect these lines later, connect the power cord before you 
connect the telephone line. 

Open the Control Panel cover.

Wipe dirt off the MFC using a slightly damp clean cloth. 

Clean the white bar and the glass cover. 
Moisten a small piece of clean soft, lint-free cloth with isopropyl alcohol and 
carefully remove dirt from the glass cover and the white bar of the scanner.