Brother MFC MFC-7840W User Manual

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

Brother MFC MFC-7840W Specifications

General

Print Technology	Laser
Print Resolution	Up to 2400 x 600 dpi
Paper Capacity	250 sheets
ADF Capacity	35 sheets
Scan Resolution	Up to 19200 x 19200 dpi (interpolated)
Fax Modem Speed	33.6 Kbps
Functions	Print, Copy, Scan, Fax
Maximum Copying Resolution	600 x 600 dpi
Optical Scan Resolution	600 x 2400 dpi
Wireless	Yes
Copy Resolution	600 x 600 dpi
Fax Transmission Speed	33.6 Kbps
Display	LCD
Weight	25.6 lbs
Connectivity	USB, Wireless
Scanner Type	Flatbed
Connectivity Technology	Wireless, USB
Printer Type	All-in-One
Scan Type	Flatbed, ADF