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Brother MFC-J3940DW User Manual

Brother MFC-J3940DW
575 pages
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Error Message Cause Action
An ink cartridge is not installed correctly. See Related Information: Replace the Ink
Cartridges.
If you are using non Brother Original ink,
the machine may not detect the ink
cartridge.
Replace the ink cartridge with a Brother
Original ink cartridge. If the error message
remains, contact Brother customer service
or your local Brother dealer.
The wrong Brother model ink cartridge
was installed.
Check the model numbers of the ink
cartridges and install the correct ink
cartridges.
Cannot Scan XX
The machine has a mechanical problem. Disconnect the machine from the power
for several minutes, and then reconnect it.
(If you cannot print documents and
received faxes, transfer them to another
fax machine or to your computer.)
See Related Information: Transfer Your
Faxes or Fax Journal Report.
Comm.Error
Poor telephone line quality caused a
communication error.
Send the fax again or connect the
machine to another telephone line. If the
problem continues, contact the telephone
company and ask them to check your
telephone line.
Connection Error
Other devices are trying to connect to the
Wi-Fi Direct network at the same time.
Make sure there are no other devices
trying to connect to the Wi-Fi Direct
network, and then try to configure the Wi-
Fi Direct settings again.
Connection Failed
The Brother machine and your mobile
device cannot communicate during the
Wi-Fi Direct network configuration.
Move the mobile device closer to your
Brother machine.
Move your Brother machine and the
mobile device to an obstruction-free
area.
If you are using the PIN Method of
WPS, make sure you have entered the
correct PIN.
Cover is Open.
The scanner cover is not locked in the
closed position.
Lift the scanner cover and then close it
again.
Make sure the telephone line cord and
interface cable (if used) have been guided
correctly through the cable channel and
out the back of the machine.
The ink cartridge cover is not locked in the
closed position.
Firmly close the ink cartridge cover until it
locks into place.
Data Remaining in
Memory
Print data is left in the machine's memory.
Press . The machine will cancel the
job and clear it from the memory. Try to
print again.
Disconnected
The other person or other person's fax
machine stopped the call.
Try to send or receive again.
If calls are stopped repeatedly and you
are using a VoIP (Voice over IP) system,
try changing the Compatibility to Basic (for
VoIP).
See Related Information: Telephone Line
Interference/VoIP.
Document Jam/too Long
The document was not inserted or fed
correctly, or the document scanned from
the ADF was too long.
Remove the jammed document, and then
press . Set the document in the ADF
correctly.
411

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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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