Brother 7840 W User Guide

Safety and legal81
A
Important informationA
Safety precautionsA
Please read these instructions before attempting any maintenance, and keep them for later 
reference. When using your telephone equipment, follow basic safety precautions to reduce the 
risk of fire, electric shock or personal injury.„ DO NOT use this product near wa ter, or in a damp environment.
„ Avoid using this product during an electrical st orm. There may be a remote risk of electric 
shock from lightning.
„ We DO NOT advise using an...

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WARNING 
Before cleaning the inside of the machine, first 
unplug the telephone line cord, and then the power 
cord from the electrical socket.
 
DO NOT handle the plug with wet hands. Doing 
this might cause an electrical shock.
 
Always make sure the plug is fully inserted.
After you have just used the machine, some 
internal parts of the ma chine will be extremely hot. 
When you open the front or back cover of the 
machine, DO NOT touch the shaded parts shown 
in the illustration.
 
To prevent...

Safety and legal83
A
 
Note
The fuser unit is marked with a caution label. Please DO NOT remove or damage the label.
 
 
DO NOT use a vacuum cleaner to clean up scattered toner. Doing this might cause the toner 
dust to ignite inside the vacuum cleaner, pote ntially starting a fire. Please carefully clean the 
toner dust with a dry, lint-free cloth and di spose of it according to local regulations.
If moving your machine, use the handholds provided. First making sure to disconnect any 
cables.
DO NOT use...

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IEC60825-1+A2:2001 SpecificationA
This machine is a Class 1 laser product as de fined in IEC60825-1+A2:2001 specifications. The 
label shown below is attached in countries where required.
Internal laser radiationA
Wave length: 780 - 800 nm
Output: 10 mW max.
Laser Class: Class 3B
WARNING 
Use of controls, adjustments or performance of  procedures other than those specified in this 
manual may result in hazardous radiation exposure.
 
Disconnect deviceA
This product must be installed near an electrical...

Safety and legal85
A
LAN connection (MFC-7440 N and MFC-7840W only)A
CAUTION 
DO NOT connect this product to a LAN connection that is subject to over-voltages.
 
Radio interferenceA
This product complies with EN55022 (CISPR Pu blication 22)/Class B. When connecting the 
machine to a computer, ensure that you use the following interface cables.
A USB cable which must not exceed 2.0 metres in length.
EU Directive 2002/ 96/EC and EN50419A
 
This equipment is marked with the above recycling symbol. It means...

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International ENERGY STAR® Compliance StatementA
The purpose of the International ENERGY STAR® Program is to promote the development and 
popularization of energy-eff icient office equipment.
As an ENERGY STAR
® Partner, Brother Industries, Ltd. ha s determined that this product meets 
the ENERGY STAR
® guidelines for energy efficiency.
 
Important safety instructionsA
1 Read all of these instructions.
2 Save them for later reference.
3 Follow all warnings and instru ctions marked on the product.
4...

Safety and legal87
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11 The power cord, including extensions should be no longer than 5 metres.DO NOT share the same power circuit with other high powered appliances, such as an air 
conditioner, copier, shredder or similar devices. If you cannot avoid using the printer with these 
appliances, we recommend that you use a high-frequency noise filter.
Use a voltage regulator if th e power source is not stable.
12 DO NOT place anything in front of the machin e that will block received faxes. DO NOT place...

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TrademarksA
The Brother logo is a registered trademark of Brother Industries, Ltd.
Brother is a registered trademark of Brother Industries, Ltd.
Multi-Function Link is a registered trademark of Brother International Corporation.
Windows Vista is either a registered trademark or a trademark of Microsoft Corporation in the 
United States and other countries.
Microsoft, Windows and Windows Server are registered trademarks of Microsoft Corporation in 
the United States and/or other countries.
Macintosh...

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B
B
TroubleshootingB
If you think there is a problem with your machine, check the chart below and follow the 
troubleshooting tips.
Most problems can be easily resolved by your self. If you need additional help, the Brother 
Solutions Center offers the latest FAQs and troubleshooting tips. Visit us at 
http://solutions.brother.com/
.
If you are having diffic ulty with your machineB
If you think there is a problem with the way your fa xes look, make a copy first. If the copy looks 
good, the problem...

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The machine does not answer 
when called.Make sure the machine is in the correct receive mode for your setup. (See 
Receiving a fax
 on page 39.) Check for a dial tone.  If possible, call your machine 
to hear it answer. If there is still no answer, check the telephone line cord 
connection. If you do not hear ringing when  you call your machine, ask your 
telephone company to check the line.
Sending faxes
DifficultiesSuggestions
Poor sending quality. Try changing your resolution to Fine or S.Fine ....