Brother MFC-4820C User Manual page 358

if you are having difficulty
incoming Calls ............ 23-8
phone line difficulty ..... 23-8
printer difficulties ......... 23-9
printing or receiving faxes
................................... 23-7
sending faxes .............. 23-8
V
Volume, setting ................... 4-6
beeper ............................. 4-6
ring ................................... 4-6
speaker ............................ 4-7
I - 5 INDEX