Brother MFC 7840W - Manual (Page 143)

Troubleshooting and routine maintenance
129
B
e
Pull off the protective cover.
f
Put the new toner cartridge firmly into
the drum unit until you hear it lock into
place. If you put it in properly, the lock
lever will lift automatically.
CAUTION
Make sure that you put in the toner
cartridge properly or it may separate from
the drum unit.
g
Clean the corona wire of the drum unit
by gently sliding the green tab from right
to left and left to right several times.
CAUTION
Be sure to return the green tab to the home
position (a) (1). If you do not, printed pages
may have a vertical stripe.
h
Put the drum unit and toner cartridge
assembly back in the machine.
i
Close the front cover.
CAUTION
DO NOT turn off the machine’s power
switch or open the front cover until the LCD
returns to the standby state.
1