Brother MFC-4300 User Manual

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Assembly
Installing the Drum Unit Assembly 
(with Toner Cartridge)
1
Unpack the drum 
unit assembly, 
including the toner 
cartridge, and 
gently rock it from 
side to side five or 
six times to 
distribute toner 
evenly inside the 
cartridge.
To prevent damage to the drum, do NOT expose it to 
light for longer than a few minutes.
Do NOT remove the starter sheet—this will be 
ejected while the MFC is warming up.
Starter Sheet