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Brother MFC-J3940DW User Manual

Brother MFC-J3940DW
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Difficulties Suggestions
Correction Mode) feature should help overcome this problem. This condition is
related to the telephone system industry and is common to all devices that send
and receive information on a single, shared line with custom features. If avoiding
a slight interruption is crucial to your business, we recommend using a separate
telephone line with no custom features.
Receiving Faxes
Difficulties
Suggestions
Cannot receive a fax. Make sure your machine has a dial tone by pressing the Hook button in Fax
mode. If you hear static or interference on your fax line, contact your local
telephone provider.
Check all line cord connections. Make sure the telephone line cord is plugged
into the telephone wall socket and the LINE socket of the machine. If you
subscribe to DSL or VoIP services, contact your service provider for connection
instructions. If you are using a VoIP system, try changing the VoIP setting to
Basic (for VoIP). This will lower modem speed and turn off Error Correction Mode
(ECM).
See Related Information: Telephone Line Interference/VoIP.
Make sure the machine is in the correct Receive Mode. This is determined by the
external devices and telephone subscriber services you have on the same line as
the Brother machine.
See Related Information: Choose the Correct Receive Mode.
If you have a dedicated fax line and want your Brother machine to
automatically answer all incoming faxes, you should select Fax Auto mode.
If your Brother machine shares a line with an external answering machine,
you should select the External TAD mode. In External TAD mode, your
Brother machine will automatically receive incoming faxes and voice callers
will be able to leave a message on your answering machine.
If your Brother machine shares a line with other telephones and you want it to
automatically answer all incoming faxes, you should select the Fax/Tel mode.
In Fax/Tel mode, your Brother machine will automatically receive faxes and
produce a pseudo/double-ring to alert you to answer voice calls.
If you do not want your Brother machine to automatically answer any
incoming faxes, you should select the Manual mode. In Manual mode, you
must answer every incoming call and activate the machine to receive faxes.
Another device or service at your location may be answering the call before your
Brother machine answers. To test this, lower the Ring Delay setting:
If the Receive Mode is set to Fax Auto or Fax/Tel, reduce the Ring Delay to 1
ring.
See Related Information: Set the Number of Rings Before the Machine
Answers (Ring Delay).
If the Receive Mode is set to External TAD, reduce the number of rings
programmed on your answering machine to 2.
If the Receive Mode is set to Manual, DO NOT adjust the Ring Delay setting.
Have someone send you a test fax:
If you received the test fax successfully, your machine is operating correctly.
Remember to reset your Ring Delay or answering machine setting back to
your original setting. If receiving problems recur after resetting the Ring Delay,
then a person, device, or subscriber service is answering the fax call before
the machine has a chance to answer.
If you were not able to receive the fax, then another device or subscriber
service may be interfering with your fax reception or there may be a problem
with your fax line.
446

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Brother MFC-J3940DW Specifications

General IconGeneral
Card reader integratedNo
Sound power level (printing)65.4 dB
Sound pressure level (printing)50 dB
Scan toE-mail, E-mail Server, FTP, File, Image, OCR, USB
Scan driversSANE, TWAIN, WIA
Scanner typeADF scanner
Duplex scanningYes
Grayscale levels256
Input color depth48 bit
Output color depth24 bit
Input grayscale depth16 bit
Output grayscale depth8 bit
Maximum scan resolution19200 x 19200 DPI
Optical scanning resolution1200 x 2400 DPI
N-up printing2, 4, 9, 16
Print technologyInkjet
Maximum resolution4800 x 1200 DPI
Duplex printing modeAuto/Manual
Print speed (ISO/IEC 24734) mono28 ipm
Print speed (ISO/IEC 24734) color21 ipm
Time to first page (black, normal)4.4 s
Time to first page (color, normal)4.6 s
Print speed (black, normal quality, A4/US Letter)- ppm
DisplayLCD
Control typeButtons, Touch
Product colorGray
Display diagonal3.5 \
Market positioningHome & office
Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technology10/100Base-T(X)
Security algorithms802.1x RADIUS, APOP, SMTP-AUTH, SNMPv3, SSL/TLS
Ethernet LAN data rates10, 100 Mbit/s
Mobile printing technologiesApple AirPrint, Brother iPrint & Scan, Google Cloud Print, Mopria Print Service
Printing colorsBlack, Cyan, Magenta, Yellow
Duplex functionsCopy, Fax, Print, Scan
Maximum duty cycle- pages per month
Number of print cartridges4
Copier resize25 - 400 %
Maximum copy resolution600 x 600 DPI
Maximum number of copies999 copies
N-in-1 copy function (N=)2, 4
Time to first copy (black, normal)5 s
Time to first copy (color, normal)6 s
Package depth561 mm
Package width681 mm
Package height493 mm
Package weight26600 g
Quantity per pack1 pc(s)
Paper input typePaper tray
Total input capacity650 sheets
Paper tray 1 input capacity250 sheets
Multi-Purpose tray input capacity100 sheets
Auto document feeder (ADF) input capacity50 sheets
Cables includedPhone
FaxingColor faxing
Fax memory150 pages
Modem speed33.6 Kbit/s
Fax forwarding toE-mail, Fax, PC
Fax speed dialing (max numbers)150
AC input voltage220 - 240 V
Power consumption (off)0.03 W
Power consumption (sleep)0.9 W
Power consumption (copying)29 W
Power consumption (standby)6 W
Envelopes sizesCom-10, DL, Monarch
Photo paper sizes9x13, 10x15, 13x18 cm
Custom media width105 - 297 mm
Custom media length148 - 431.8 mm
Paper tray media typesCoated paper, Envelopes, Glossy paper, Photo paper, Plain paper, Recycled paper
ISO A-series sizes (A0...A9)A3, A4, A5, A6
Maximum ISO A-series paper sizeA3
Multi-Purpose Tray media weight64 - 220 g/m²
Auto Document Feeder (ADF) media weight64 - 120 g/m²
Mac operating systems supportedMac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Mac OS X 10.15.3 Catalina, Mac OS X 10.9 Mavericks, Mac OS X 11.0 Big Sur
Other operating systems supportedChromeOS
Server operating systems supportedWindows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Windows operating systems supportedWindows 10, Windows 7, Windows 8, Windows 8.1
Weight and Dimensions IconWeight and Dimensions
Depth477 mm
Width576 mm
Height375 mm

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