Brother MFC MFC-7840W User Manual

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To prevent damage to the machine caused
by static electricity, DO NOT touch the
electrodes shown in the illustration.
d Push down the green lock lever and take
the toner cartridge out of the drum unit.
CAUTION
Handle the toner cartridge carefully. If toner
scatters on your hands or clothes, wipe or
wash it off with cold water at once.
To avoid print quality problems, DO NOT
touch the shaded parts shown in the
illustrations below.
e Put the print sample in front of the drum
unit, and find the exact position of the
poor print.
f Turn the drum unit gear by hand while
looking at the surface of the OPC
drum (1).
g When you have found the mark on the
drum that matches the print sample,
wipe the surface of the OPC drum with a
dry cotton swab until the dust or glue on
the surface comes off.
CAUTION
The drum is photosensitive so DO NOT
touch it with your fingers.
DO NOT clean the surface of the
photosensitive drum with a sharp object.
DO NOT use a scrubbing or wiping motion
because this might damage the drum.
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