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Brother MFC-J491DW User Manual

Brother MFC-J491DW
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Home > Troubleshooting > If You Are Having Difficulty with Your Machine > Network Problems > I Cannot
Complete the Wireless Network Setup Configuration
I Cannot Complete the Wireless Network Setup Configuration
Turn your wireless router off and back on. Then try to configure the wireless settings again. If you are unable to
resolve the problem, follow the instructions below:
Investigate the problem using the WLAN Report.
Cause
Action Interface
Your security settings (SSID/
Network Key) are not
correct.
Confirm the security settings using the Wireless Setup Helper
utility. For more information and to download the utility, go to your
model's Downloads page on the Brother Solutions Center at
support.brother.com.
Select and confirm that you are using the correct security
settings.
- See the instructions supplied with your wireless LAN access
point/router for information on how to find the security
settings.
- The manufacturer's name or model number of the wireless
LAN access point/router may be used as the default security
settings.
- Consult with the access point/router manufacturer, your
Internet provider, or network administrator.
Wireless
Your Brother machine's MAC
address is not allowed.
Confirm that the Brother machine's MAC Address is allowed in the
filter. You can find the MAC Address on your Brother machine's
control panel.
Wireless
Your wireless LAN access
point/router is in stealth
mode (not broadcasting the
SSID).
Enter the correct SSID name or Network Key manually.
Check the SSID name or the Network Key in the instructions
supplied with your wireless LAN access point/router and
reconfigure the wireless network setup.
Wireless
Your security settings (SSID/
password) are not correct.
Confirm the SSID and password.
- When you are configuring the network manually, the SSID
and password are displayed on your Brother machine. If your
mobile device supports the manual configuration, the SSID
and password will be displayed on your mobile device’s
screen.
Wi-Fi Direct
You are using Android
4.0.
If your mobile device disconnects (approximately six minutes after
using Wi-Fi Direct), try the one-push configuration using WPS
(recommended) and set the Brother machine as a G/O.
Wi-Fi Direct
Your Brother machine is
placed too far from your
mobile device.
Move your Brother machine within about 3.3 feet (1 meter) of the
mobile device when you configure the Wi-Fi Direct network settings.
Wi-Fi Direct
There are some obstructions
(walls or furniture, for
example) between your
machine and the mobile
device.
Move your Brother machine to an obstruction-free area. Wi-Fi Direct
There is a wireless
computer, Bluetooth-
supported device,
microwave oven, or digital
cordless phone near the
Brother machine or the
mobile device.
Move other devices away from the Brother machine or the mobile
device.
Wi-Fi Direct
If you have checked and
tried all of the above, but still
cannot complete the Wi-Fi
Turn your Brother machine off and back on. Then try to configure
the Wi-Fi Direct settings again.
Wi-Fi Direct
494

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Brother MFC-J491DW Specifications

General IconGeneral
DisplayLCD
Product colorBlack
Built-in displayYes
Display diagonal1.77 \
Market positioningHome & office
Internal memory128 MB
Card reader integratedNo
Sound pressure level (copying)50 dB
Print technologyInkjet
Maximum resolution1200 x 6000 DPI
Duplex printing modeAuto
Print speed (ISO/IEC 24734) mono12 ipm
Print speed (ISO/IEC 24734) color6 ipm
Time to first page (black, normal)8 s
Duplex print speed (ISO/IEC 24734) mono3 ipm
Duplex print speed (ISO/IEC 24734) color1.7 ipm
Print speed (black, normal quality, A4/US Letter)27 ppm
Print speed (color, normal quality, A4/US Letter)10 ppm
Standard interfacesUSB 2.0, Wireless LAN
USB 2.0 ports quantity1
Copier resize25 - 400 %
Maximum copy resolution1200 x 600 DPI
Package depth249 mm
Package width447 mm
Package height457 mm
Package weight10100 g
Power consumption (off)0.2 W
Power consumption (sleep)1 W
Power consumption (standby)3.5 W
Power consumption (printing)16 W
Power consumption (average operating)- W
Sustainability certificatesNordic Swan Ecolabel, ENERGY STAR
FaxingMono faxing
Fax memory170 pages
Modem speed14.4 Kbit/s
Wi-Fi standards802.11b, 802.11g, Wi-Fi 4 (802.11n)
Security algorithms64-bit WEP, 128-bit WEP, WPA-PSK, WPA2-PSK
Mobile printing technologiesApple AirPrint, Mopria Print Service
Paper input typePaper tray
Total input capacity100 sheets
Total output capacity50 sheets
Auto document feeder (ADF) input capacity20 sheets
Paper tray media typesPlain paper
Borderless printing media sizesA4
Scan toE-mail, File, Image, OCR
Scanner typeFlatbed & ADF scanner
Input color depth30 bit
Output color depth24 bit
Maximum scan resolution19200 x 19200 DPI
Optical scanning resolution1200 x 2400 DPI
Digital sender-
Maximum duty cycle- pages per month
Harmonized System (HS) code84433100
Weight and Dimensions IconWeight and Dimensions
Depth341 mm
Width400 mm
Height172 mm

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