Brother MFC MFC-7840W User Manual

Troubleshooting and routine maintenance
119
B
c Wipe the outside of the machine with a
soft cloth to remove dust.
d Remove anything that is stuck inside the
paper tray.
e Wipe the inside and the outside of the
paper tray with a soft cloth to remove
dust.
f Re-load the paper and put the paper tray
firmly back in the machine.
g Plug the machine’s power cord back into
the AC power outlet first, and reconnect
all cables and telephone line cord. Turn
on the machine’s power switch.
Cleaning the scanner glass B
a Turn off the machine’s power switch.
Unplug the telephone line cord first,
disconnect all cables and then unplug
the power cord from the AC power
outlet.
b Lift the document cover (1).
Clean the white plastic surface (2) and
scanner glass (3) underneath it with a
soft lint-free cloth moistened with water.
c In the ADF unit, clean the white bar (1)
and the scanner glass strip (2)
underneath it with a soft lint-free cloth
moistened with water.
1
3
2
1
2

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