Brother MFC-J491DW User Manual

Difficulties Suggestions
1. Take out the memory card or USB Flash drive and put it back in again.
2. If you have tried “Eject” from within Windows
®
, take out the memory card or
USB Flash drive before you continue.
3. If an error message appears when you try to eject the memory card or USB
Flash drive, it means the card is being accessed. Wait a while, and then try
again.
4. If all of the above do not work, turn off your computer and machine, and then
turn them on again.
Cannot access Removable Disk
from the computer.
Make sure the Removable Disk function is set to on and you have correctly
inserted the memory card or USB Flash drive.
Part of my photo is missing when
printed.
Make sure Borderless printing and Cropping are turned off.
See Related Information: Print Borderless Photos from Media.
See Related Information: Print Photos with Auto Cropping.
Software Difficulties
Difficulties
Suggestions
Cannot print. Uninstall and reinstall the Brother driver.
“Device Busy” appears on the
computer screen.
Make sure the machine is not showing an error message on the machine's
display.
Related Information
• If You Are Having Difficulty with Your Machine
• Troubleshooting
• Clean the Scanner
• Correct the Paper Feed to Clear Vertical Lines
• Load Documents in the Automatic Document Feeder (ADF)
• Load Documents on the Scanner Glass
• Print Borderless Photos from Media
• Print Photos with Auto Cropping
490

Brother MFC-J491DW Specifications

General

Display	LCD
Product color	Black
Built-in display	Yes
Display diagonal	1.77 \
Market positioning	Home & office
Internal memory	128 MB
Card reader integrated	No
Sound pressure level (copying)	50 dB
Print technology	Inkjet
Maximum resolution	1200 x 6000 DPI
Duplex printing mode	Auto
Print speed (ISO/IEC 24734) mono	12 ipm
Print speed (ISO/IEC 24734) color	6 ipm
Time to first page (black, normal)	8 s
Duplex print speed (ISO/IEC 24734) mono	3 ipm
Duplex print speed (ISO/IEC 24734) color	1.7 ipm
Print speed (black, normal quality, A4/US Letter)	27 ppm
Print speed (color, normal quality, A4/US Letter)	10 ppm
Standard interfaces	USB 2.0, Wireless LAN
USB 2.0 ports quantity	1
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Package depth	249 mm
Package width	447 mm
Package height	457 mm
Package weight	10100 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 certificates	Nordic Swan Ecolabel, ENERGY STAR
Faxing	Mono faxing
Fax memory	170 pages
Modem speed	14.4 Kbit/s
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Security algorithms	64-bit WEP, 128-bit WEP, WPA-PSK, WPA2-PSK
Mobile printing technologies	Apple AirPrint, Mopria Print Service
Paper input type	Paper tray
Total input capacity	100 sheets
Total output capacity	50 sheets
Auto document feeder (ADF) input capacity	20 sheets
Paper tray media types	Plain paper
Borderless printing media sizes	A4
Scan to	E-mail, File, Image, OCR
Scanner type	Flatbed & ADF scanner
Input color depth	30 bit
Output color depth	24 bit
Maximum scan resolution	19200 x 19200 DPI
Optical scanning resolution	1200 x 2400 DPI
Digital sender	-
Maximum duty cycle	- pages per month
Harmonized System (HS) code	84433100

Weight and Dimensions

Depth	341 mm
Width	400 mm
Height	172 mm