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Brother MFC MFC-7840W User Manual

Brother MFC MFC-7840W
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93
B
B
Troubleshooting B
IMPORTANT
For technical help, you must call the country where you bought the machine. Calls must be
made from within that country.
If you are having difficulty with your machine B
If you think there is a problem, check the chart below and follow the troubleshooting tips. You can
solve most problems by yourself.
If you need additional help, the Brother Solutions Center offers the latest FAQs and
troubleshooting tips.
Visit us at http://solutions.brother.com/
.
Troubleshooting and routine
maintenance
B
Printing or receiving faxes
Difficulties Suggestions
Condensed print
Horizontal streaks
Top and bottom sentences are
cut off
Missing lines
Usually this is caused by a poor telephone connection. If your copy looks good,
you probably had a bad connection, with static or interference on the telephone
line. Ask the other party to send the fax again.
Poor print quality See Improving the print quality on page 100.
Vertical black lines when receiving The corona wire for printing may be dirty. Clean the corona wire. (See Cleaning
the corona wire on page 122.)
The sender’s scanner may be dirty. Ask the sender to make a copy to see if the
problem is with the sending machine. Try receiving from another fax machine.
If the problem continues, call Brother Customer Service at 1-877-BROTHER
(1-877-276-8437) (in USA) or 1-877-BROTHER (in Canada).
Received faxes appear as split or
blank pages.
If the received faxes are divided and printed on two pages or if you get an extra
blank page, your paper size setting may not be correct for the paper you are using.
(See Paper size on page 20.)
Turn on auto reduction. (See Printing a reduced incoming fax on page 43.)

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Brother MFC MFC-7840W Specifications

General IconGeneral
Print TechnologyLaser
Print ResolutionUp to 2400 x 600 dpi
Paper Capacity250 sheets
ADF Capacity35 sheets
Scan ResolutionUp to 19200 x 19200 dpi (interpolated)
Fax Modem Speed33.6 Kbps
FunctionsPrint, Copy, Scan, Fax
Maximum Copying Resolution600 x 600 dpi
Optical Scan Resolution600 x 2400 dpi
WirelessYes
Copy Resolution600 x 600 dpi
Fax Transmission Speed33.6 Kbps
DisplayLCD
Weight25.6 lbs
ConnectivityUSB, Wireless
Scanner TypeFlatbed
Connectivity TechnologyWireless, USB
Printer TypeAll-in-One
Scan TypeFlatbed, ADF

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