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Brother MFC-J3940DW User Manual

Brother MFC-J3940DW
575 pages
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Home > Troubleshooting > If You Are Having Difficulty with Your Machine > Telephone and Fax Problems
Telephone and Fax Problems
>> Telephone Line or Connections
>> Handling Incoming Calls
>> Receiving Faxes
>> Sending Faxes
Telephone Line or Connections
Difficulties
Suggestions
Dialling does not work. (No dial
tone)
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. Make sure
your machine has a dial tone by pressing the Hook button in Fax mode. 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.
(Available only for some countries.)
Change the Tone/Pulse setting.
See Related Information: Set Tone or Pulse Dialling Mode.
Send a manual fax by pressing the Hook button, and dialing the number. Wait to
hear fax-receiving tones before pressing the Start button.
If there is no dial tone, connect a known working telephone and telephone line
cord to the socket. Then lift the external telephone’s handset and listen for a dial
tone. If there is still no dial tone, ask your telephone company to check the line
and/or wall socket.
The machine does not answer
when called.
Make sure the machine is in the correct receive mode for your setup.
See Related Information: Choose the Correct Receive Mode.
Check for a dial tone. If possible, call your machine to hear it answer. If there is
still no answer, check that the telephone line cord is plugged into the telephone
wall socket and the LINE socket of the machine. Make sure your machine has a
dial tone by pressing the Hook button in Fax mode. If there is no ringing when
you call your machine, ask your telephone company to check the line.
Handling Incoming Calls
Difficulties
Suggestions
The machine ‘Hears’ a voice as a
CNG Tone.
If Fax Detect is set to On, your machine is more sensitive to sounds. It may
mistakenly interpret certain voices or music on the line as a fax machine calling
and respond with fax receiving tones. Deactivate the machine by pressing .
Try avoiding this problem by turning Fax Detect Off.
See Related Information: Set Fax Detect.
Sending a Fax Call to the
machine.
If you answered on an extension or external telephone, press your Remote
Activation Code (the factory setting is *51). If you answered on the external
telephone, press the Start button to receive the fax.
When your machine answers, hang up.
Custom features on a single line. If you have Call Waiting, Call Waiting/Caller ID, Caller ID, Voice Mail, an
answering machine, an alarm system or other custom feature on a single
telephone line with your machine, it may create a problem sending or receiving
faxes.
For Example: If you subscribe to Call Waiting or some other custom service and
its signal comes through the line while your machine is sending or receiving a
fax, the signal can temporarily interrupt or disrupt the faxes. Brother’s ECM (Error
445

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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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