Brother MFC-J6720DW Installation and operating manual

1
Using the
documentation 1
Please read this booklet before attempting to
operate the machine, or before attempting any
maintenance. Failure to follow these
instructions may result in an increased risk of
personal injury or damage to property,
including through fire, electrical shock, burns
or suffocation.
Read all of the instructions. Save them for later
reference.
Symbols and conventions
used in the documentation 1
The following symbols and conventions are
used throughout the documentation.
Follow all warnings and instructions marked
on the machine.
NOTE
The illustrations in this guide show the
MFC-J6720DW.
Product Safety Guide 1
MFC-J6520DW/J6720DW/J6920DW/J6925DW
WARNING
WARNING indicates a potentially
hazardous situation which, if not avoided,
could result in death or serious injuries.
CAUTION
CAUTION indicates a potentially hazardous
situation which, if not avoided, may result in
minor or moderate injuries.
IMPORTANT
IMPORTANT indicates a potentially
hazardous situation which, if not avoided,
may result in damage to property or loss of
product functionality.
NOTE
Notes tell you how to respond to a situation
that may arise or give tips about how the
operation works with other features.
Prohibition icons indicate actions
that must not be performed.
This icon indicates that flammable
sprays must not be used.
This icon indicates that organic
solvents such as alcohol and liquids
must not be used.
Electrical Hazard icons alert you to
possible electrical shocks.
Fire Hazard icons alert you to the
possibility of a fire.
Bold Bold typeface identifies the dial
pad numbers of the
Touchpanel and buttons on
your computer screen.
Italics Italicized typeface emphasizes
an important point or refers you
to a related topic.
Courier
New
Text in Courier New font
identifies messages on the
LCD of the machine.
Version 0
USA-ENG

2
Compilation and Publication 1
Under the supervision of Brother Industries, Ltd., this manual has been compiled and published,
covering the latest product descriptions and specifications.
The contents of this manual and the specifications of this product are subject to change without
notice.
Brother reserves the right to make changes without notice in the specifications and materials
contained herein and shall not be responsible for any damages (including consequential) caused
by reliance on the materials presented, including but not limited to typographical and other errors
relating to the publication.
Choosing a location 1
Put your machine on a flat, level, stable surface that is free from vibration and shocks, such as a
desk. Put the machine near a telephone wall jack and a standard AC power outlet. Choose a
location where the temperature remains between 50F and 95F (10C and 35C) and the
humidity is between 20% to 80% (without condensation).
WARNING
DO NOT expose the machine to direct sunlight, excessive heat, open flames, salty or corrosive
gasses, moisture or dust. DO NOT place your machine on a carpet or rug, as this will expose it
to dust and may create a risk of an electrical short or fire. It may also damage the machine
and/or render it inoperable.
DO NOT place the machine near heaters, air conditioners, electrical fans, refrigerators, or water.
Doing so may create the risk of a short circuit or fire should water come into contact with the
machine (including condensation caused by heating/air conditioning/ventilation equipment).

3
DO NOT place the machine near chemicals or in a place where chemicals could be spilled on
it. Should chemicals come into contact with the machine, there may be a risk of fire or electric
shock. In particular, organic solvents or liquids such as benzene, paint thinner, polish remover,
or deodorizer may melt or dissolve the plastic cover and/or cables, resulting in a risk of fire or
electric shock. These or other chemicals may also cause the machine to malfunction or become
discolored.
DO NOT put the machine in a location where any slot or opening in the machine is obstructed
or blocked. These slots and openings are provided for ventilation. Blocking the machine’s
ventilation could create a risk of overheating and/or fire. Instead:
• Place the machine on a solid surface, never on a bed, sofa, rug, or other similar soft surface.
• Do not place this machine in a “built-in” installation unless adequate ventilation is provided.
Plastic bags are used in the packing of your machine. Plastic bags are not toys. To avoid the
danger of suffocation, keep these bags away from babies and children and dispose of them
correctly.
CAUTION
Avoid placing your machine in a high-traffic area. If you must place it in a high-traffic area,
ensure that the machine is in a safe location where it cannot be accidentally knocked-over,
which could cause injury to you and serious damage to the machine.
Ensure that cables and cords leading to the machine are secured so as not to pose a tripping
hazard.
DO NOT place this machine on an unstable or tilted cart, stand, table or on any tilted/slanted
surface. The machine is heavy and may fall, causing injury to you and serious damage to the
machine.

4
IMPORTANT
• DO NOT place your product next to devices that contain magnets or generate magnetic fields.
Doing so may interfere with the operation of the product, causing print quality problems.
• DO NOT place your machine next to sources of interference, such as speakers or the base
units of non-Brother cordless telephones. Doing so may interfere with the operation of the
machine's electronic components.
• DO NOT tip the machine after the ink cartridges are installed. Doing so may cause ink spillage
and internal damage to the machine.
• DO NOT connect your machine to an AC power outlet controlled by wall switches or automatic
timers. Disruption of power can delete information from the machine's memory, and repeated
cycling of the power can damage the machine.

5
To use the machine safely 1
WARNING
ELECTRICAL HAZARDS
Failure to follow the warnings in this section may create the risk of an electrical shock. In
addition, you could create an electrical short, which may create the risk of a fire.
There are high-voltage electrodes inside the machine. Before you access the inside of the
machine, including for routine maintenance such as cleaning, make sure you have unplugged
the power cord from the AC power outlet, as well as any telephone (RJ-11) or Ethernet (RJ-45)
cables from the machine.
DO NOT push objects of any kind into this machine through slots or openings in the cabinet, as
they may touch dangerous voltage points or short out parts.
DO NOT handle the plug with wet hands.
Always make sure the plug is fully inserted.
DO NOT continue using the machine if it has been dropped or the cabinet has been damaged.
Instead, unplug the machine from the power outlet and contact Brother Authorized Service
Personnel immediately.

6
If water, other liquids, or metal objects get inside the machine, immediately unplug the machine
from the AC power outlet and contact Brother Authorized Service Personnel.
DO NOT connect the machine to a DC power source or inverter. If you are not sure what kind
of power source you have, contact a qualified electrician.
Power Cord Safety:
• DO NOT pull on the middle of the AC power cord; pulling on the middle may cause the cord
to separate from the plug. Doing this might cause an electrical shock.
• DO NOT allow anything to rest on the power cord.
• DO NOT place this machine where people can walk on the cord.
• DO NOT place this machine in a position where the cord is stretched or strained, as it may
become worn or frayed.
• DO NOT use the machine or handle the cord if the cord has become worn or frayed. If
unplugging your machine, DO NOT touch the damaged/frayed part.
• Brother strongly recommends that you DO NOT use any type of extension cord.
DO NOT use this product during an electrical storm.
Never touch telephone wires or terminals that are not insulated unless the telephone line has
been unplugged at the wall jack. Never install telephone wiring during a lightning storm. Never
install a telephone wall jack in a wet location.
FIRE HAZARDS
Failure to follow the warnings in this section may create the risk of a fire.
DO NOT use flammable substances, any type of spray or an organic solvent/liquid that contains
alcohol or ammonia to clean the inside or outside of the machine. Doing this may cause a risk
of fire or electrical shock.

7
DO NOT use this machine in the vicinity of combustible dust.
For users with pacemakers
This machine generates a weak magnetic field. If you feel anything wrong with the operation of
your pacemakers when near the machine, move away from the machine and consult a doctor
immediately.
CAUTION
DO NOT sit or stand on the machine or use it for any purpose beyond its intended purpose.
If the machine becomes hot, releases smoke, or generates any strong smells, immediately
unplug the machine from the AC power outlet. Call Brother Customer Service.
Wait until pages have exited the machine before picking them up. Failure to do this may cause
injury to your fingers by trapping them in a roller.
If the tray has been expanded to hold large paper such as Ledger, A3 or Legal size paper, place
the machine on a flat surface that can support both the machine and the lower tray. When the
lower tray is expanded, it will protrude from the machine. Therefore, if someone hits the tray, the
machine could fall and cause injury.

8
DO NOT put your hands on the edge of the machine. Doing this may cause injury to your fingers
by pinching them.
When changing the tray size from the Ledger, A3 or Legal size to the original size, be careful
not to pinch your fingers in the gaps or slots in the bottom of the tray. It may cause injury to you.

9
DO NOT touch the area shaded in the illustration. Doing this may cause injury to your fingers by
cutting them on the edge of the machine.
(MFC-J6720DW, MFC-J6920DW and MFC-J6925DW)
To prevent possible injuries, at least two people should lift the product. One person should hold
the front of the product, and one person should hold the back, as shown in the illustration below.
Be careful not to trap your fingers when you put the product down.
DO NOT carry the machine by holding the lower tray when it is installed. The lower tray could
fall and cause injury to you.

10
DO NOT carry the machine by holding the scanner cover, the Jam Clear Cover, the manual feed
slot cover, or the control panel. Doing this may cause the machine to slip out of your hands and
may result in injury.
Carry the machine by sliding your hands into the handhold indentations located on each side of
the machine.
(MFC-J6520DW)