Brother 7820 N Manual

							
Making copies8 - 8
8
Changing the default 
copy settings
You can save the copy settings you use most 
often by setting them as default. These 
settings will remain until you change them 
again.
Quality
1Press Menu/Set , 3, 1.
2Press ▲ or ▼ to select Auto, Text or 
Photo.
Press  Menu/Set .
3Press Stop/Exit .
Adjusting contrast
You can change the contrast to help an image 
look sharper and more vivid.
1Press Menu/Set , 3, 2.
2Press ▲ to increase the contrast.
— OR —
Press 
▼ to decrease the contrast.
Press  Menu/Set .
3Press Stop/Exit .
Out of Memory 
message
If the memory becomes full while you are 
making copies, the LCD message will guide 
you through the next step.
If you get an 
Out of Memory message while 
scanning a subsequent page, you will have 
the option to press  Start to copy the pages 
scanned so far, or to press  Stop/Exit to 
cancel the operation.
Note
To gain extra memory, you can turn off Fax 
Storage. 
(See  Turning off Remote Fax Options  on 
page 6-3.)
— OR —
Print the faxes that are in the memory. 
(See  Printing a fax from the memory  on page 
4-4.)
When you get an 
Out of Memory message, 
you may be able to make copies if you first 
print incoming faxes in the memory to restore 
the memory to 100%.
Copy
1.Quality
Copy
2.Contrast 
						

							
9 - 1
9
The User’s Guide on the CD-ROM includes the Software and Network User’s Guides for features 
available when connected to a computer (for example, Printing and Scanning). The availability of 
the features listed below varies by model:
■Using the machine as a Printer (See Chapter 1 in the Software User’s Guide on the CD-ROM.)
■How to Scan (See Chapter 2 in the Software User’s Guide on the CD-ROM.)
■Using ControlCenter2.0 (See Chapter 3 in the Software User’s Guide on the CD-ROM.)
■Using Remote Setup (See Chapter 4 in the Software User’s Guide on the CD-ROM.)
■Using Brother PC-FAX software 
(See Chapter 5 in the Software User’s Guide on the CD-ROM.)
■Using your machine with a Macintosh®
(See Chapter 7 in the Software User’s Guide on the CD-ROM.)
■Network Scanning* (See the Network User’s Guide/Software User’s Guide on the CD-ROM.)
■Network Printing*(See the Network User’s Guide/Software User’s Guide on the CD-ROM.)
Note
See also  How to access the complete User’s Guide  on page 1-3.
* For MFC-7420 (Optional NC-2200w External Wireless Print/Scan Server required)
Software and Network Features 
						

							
10 - 1
10
10
IEC 60825-1 Specification
This machine is a Class 1 laser product as defined 
in IEC 60825-1 specifications. The label shown 
below is attached in countries where required.
This machine has a Class 3B Laser Diode which 
emits invisible laser radiation in the Scanner Unit. 
The Scanner Unit should not be opened under any 
circumstances.
Laser Diode
Wave length: 770 - 810 nm
Output: 5 mW max.
Laser Class: Class 3B
Disconnect device
This product must be installed near an electrical 
socket that is easily accessible. In case of 
emergencies, you must disconnect the power cord 
from the electrical socket to shut off power 
completely.
Wiring information 
Important
If you need to replace the plug fuse, fit a fuse that 
is approved by ASTA to BS1362 with the same 
rating as the original fuse.
Always replace the fuse cover. Never use a plug 
that does not have a cover.
Warning - This printer must be earthed.
The wires in the mains lead are coloured in line 
with the following code:
Green and Yellow: Earth
Blue: Neutral
Brown: Live
If in any doubt, call a qualified electrician.
LAN connection 
(MFC-7820N only)
Important information
WARNING
Use of controls, adjustments or performance of 
procedures other than those specified in this 
manual may result in hazardous radiation 
exposure.
CLASS 1 LASER PRODUCT
APPAREIL À LASER DE CLASSE 1
LASER KLASSE 1 PRODUKT
CAUTION
Do not connect this product to a LAN 
connection that is subject to over-voltages. 
						

							Chapter 10
10 - 2
Radio interference 
This product complies with EN55022 (CISPR 
Publication 22)/Class B. Before this product is 
used, ensure that you use the following interface 
cables.
1. A shielded parallel interface cable with  twisted-pair conductors and that is marked 
“IEEE 1284 compliant”. The cable must not 
exceed 2.0 metres in length.
2. A USB cable. The cable must not exceed 2.0  metres in length.
Important safety instructions
1Read all of these instructions.
2Save them for later reference.
3Follow all warnings and instructions marked 
on the product.
4Unplug this product from the wall socket 
before cleaning inside of the machine. Do 
not use liquid or aerosol cleaners. Use a 
damp cloth for cleaning.
5Do not place this product on an unstable 
cart, stand, or table. The product may fall, 
causing serious damage to the product.
6Slots and openings in the cabinet and the 
back or bottom are provided for ventilation; 
to ensure reliable operation of the product 
and to protect it from overheating, these 
openings must not be blocked or covered. 
The openings should never be blocked by 
placing the product on a bed, sofa, rug, or 
other similar surface. This product should 
never be placed near or over a radiator or 
heater. This product should never be placed 
in a built-in installation unless proper 
ventilation is provided.
7This product should be operated from the 
type of power source indicated on the label. 
If you are not sure of the type of power 
available, call your dealer or local power 
company.
8Use only the power cord supplied with this 
machine.
9This product is equipped with a 3-wire 
grounded plug. This plug will only fit into a 
grounded power outlet. This is a safety 
feature. If you are unable to insert the plug 
into the outlet, call your electrician to replace 
your obsolete outlet. Do not defeat the 
purpose of the grounded plug.
0Do not allow anything to rest on the power 
cord. Do not place this product where people 
can walk on the cord. 
						

							
Important information10 - 3
10
ADo not place anything in front of the machine 
that will block received faxes. Do not place 
anything in the path of received faxes.
BWait until pages have exited the machine 
before picking them up.
CUnplug this product from the power socket 
and refer servicing to Authorized Service 
Personnel under the following conditions: 
 When the power cord is damaged or frayed.
 If liquid has been spilled into the product.
 If the product has been exposed to rain or  water.
 If the product does not operate normally  when the operating instructions are 
followed. Adjust only those controls that 
are covered by the operating instructions. 
Improper adjustment of other controls may 
result in damage and will often require 
extensive work by a qualified technician to 
restore the product to normal operation.
 If the product has been dropped or the  cabinet has been damaged.
 If the product exhibits a distinct change in  performance, indicating a need for service.
DTo protect your product against power 
surges, we recommend the use of a power 
protection device (Surge Protector).
ETo reduce the risk of fire, electric shock and 
injury to people, note the following:
 Do not use this product near appliances that use water, a swimming pool or in a wet 
basement.
 Do not use the machine during an  electrical storm (there is the remote 
possibility of an electrical shock) or to 
report a gas leak in the vicinity of the leak.
 Do not dispose of batterres in a fire. They  may explode. Check with local codes for 
possible special disposal instructions.
Trademarks
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.
© 2004-2005 Brother Industries, Ltd. All rights 
reserved.
Windows and Microsoft are registered trademarks 
of Microsoft in the U.S. and other countries.
Macintosh and TrueType are registered 
trademarks of Apple Computer, Inc.
PaperPort and OmniPage OCR are registered 
trademarks of ScanSoft, Inc.
Presto! PageManager is a registered trademark of 
NewSoft Technology Corporation.
Each company whose software title is mentioned 
in this manual has a Software License Agreement 
specific to its proprietary programs.
All other brand and product names mentioned 
in this User’s Guide, the Software User’s 
Guide, and the Network User’s Guide* 
(*MFC-7820N only) are registered trademarks 
of their respective companies. 
						

							11 - 1
11
Troubleshooting 
Error messages
As with any sophisticated office product, errors may occur. If this happens, your machine identifies 
the problem and displays an error message. The most common error messages are shown below.
You can correct most problems by yourself. If you need more help, the Brother Solutions Center 
offers latest FAQs and troubleshooting tips.
Visit us at http://solutions.brother.com
.
Troubleshooting and routine 
maintenance
ERROR MESSAGES
ERROR MESSAGE CAUSE ACTION
Back Cover OpenThe back cover is not completely 
closed. Close the back cover of the machine.
BT Call Sign On The machine is set BT Call Sign to 
On . You cannot change the Receive 
Mode from Manual to another mode. Set 
BT Call Sign  to Off . 
See  BT Call Sign  on page A-1.
Change Drum Soon The drum unit is near the end of its life Use the drum unit until you have a print quality 
problem; then replace the drum unit with a new one.
See Replacing the drum unit (DR-2000)  on page 
11-28.
Comm.Error Poor phone line quality caused a 
communication error. Try sending the fax again or try connecting the 
machine to another telephone line. If the problem 
continues, call the telephone company and ask them 
to check your phone line.
Connection Fail You tried to poll a fax machine that is 
not in Polled Waiting mode. Check the other fax machine’s polling setup.
Cooling Down
Wait for a while The temperature of the drum unit or 
toner cartridge is too hot. The machine 
will pause its current print job and go 
into cooling down mode. During the 
cooling down mode, you will hear the 
cooling fan running while the display on 
the machine shows 
Cooling Down, 
and  Wait for a while .You must wait 20 minutes for it to cool.
Cover is Open The front cover is not completely 
closed.  Close the front cover of the machine.
Data Remaining Print data is left in the machine’s 
memory. Re-start printing from your computer.
Print data is left in the machine’s 
memory. The USB or Parallel cable was 
unplugged while the computer was 
sending the data to the machine. Press 
Job Cancel . The machine will cancel the job 
and clear it from the memory.
Try to print again.
Disconnected The other person or other person’s fax 
machine stopped the call. Try to send or receive again. 
						

							Troubleshooting and routine maintenance11 - 2
11
Document JamThe document was not inserted or fed 
properly, or the document scanned from 
the ADF was too long. See 
Document jams  on page 11-6.
See  Using the automatic document feeder (ADF)  on 
page 1-7.
Drum Error The drum unit needs to be cleaned. See  Cleaning the corona wire on page 11-24.
Fail to Warm up The fuser unit is too cold. (For MFC-7420)
When you turn off the machine’s power switch its 
memory will be cleared. (To check if faxes are in the 
machine’s memory, see Checking if the machine has 
faxes in its memory  on page 11-5.) If there are faxes, 
you need to save them before following the 
suggestions below. (To save the faxes, see 
Transferring faxes to your PC  on page 11-5 or 
Forwarding faxes to another fax machine  on page 
11-5.)
Then, turn off the machine’s power switch. Check the 
machine’s environment. If it is in a location that is too 
hot or too cold, try to cool or warm the room by turning 
on the air conditioner or heater. Or, move the machine 
to another location. Then, turn on the machine’s power 
switch. 
(For MFC-7820N)
Turn off the machine’s power switch, and check the 
machine’s environment. If it is in a location that is too 
hot or too cold, try to cool or warm the room by turning 
on the air conditioner or heater. Or, change the 
location. Then, turn on the machine’s power switch. 
(The machine can be turned off for up to 4 days without 
losing faxes stored in the memory.)
Unit is too Hot
The fuser unit is too hot.
Machine too Hot The inside of the machine is too hot. Listen to the machine to check that the cooling fan is 
spinning.
Make sure that the air vents are not covered up or 
blocked.
If the fan is spinning and air vents are clear, you should 
let the machine cool down for several minutes before 
using it again.
If the fan is not spinning, you need to save the faxes 
before you follow the suggestions below. 
(For MFC-7420) 
When you turn off the machines power switch its 
memory will be cleared. To check whether the 
machine has faxes in its memory see Checking if the 
machine has faxes in its memory  on page 11-5. If there 
are faxes you need to save them before following the 
suggestions below. (See  Transferring faxes to your PC  
on page 11-5 or  Forwarding faxes to another fax 
machine  on page 11-5.)
Turn off the machines power switch and then on 
again. If the error message continues, leave the 
machine for several minutes and try it again.
(For MFC-7820N)  
Turn off the machines power switch and then on 
again. If the error message continues leave the 
machine for several minutes and then try it again. (The 
machine can be turned off for up to 4 days without 
losing faxes stored in the memory.)
ERROR MESSAGES
ERROR MESSAGE CAUSE ACTION 
						

							
Chapter 11
11 - 3
No cartridge The toner cartridge is not installed 
properly. Reinstall the toner cartridge.
No Paper Fed The machine is out of paper or paper is 
not properly loaded in the paper tray. Refill the paper in the paper tray, and then press 
Start.
— OR —
Remove the paper and load it again and then press 
Start .
No Response/Busy The number you dialled does not 
answer or is busy. Verify the number and try again.
Not Registered You tried to access a One-Touch or 
Speed Dial number that is not 
programmed. Set up the One-Touch or Speed Dial number. 
(See 
Storing One-Touch numbers  on page 5-1 and 
Storing Speed-Dial numbers  on page 5-2.)
Out of Memory The machine’s memory is full. (Fax sending or copy operation in progress)
Press Start to send or copy the scanned pages.
— OR —
Press  Stop/Exit  and wait until the other operations in 
progress have finished and then try again.
— OR —
Clear the faxes from the memory. (See  Out of Memory 
message  on page 8-8.)
(Printing operation in process)
Reduce print resolution. (See  Advanced tab in the 
Software User’s Guide on the CD-ROM.)
— OR —
Clear the faxes from the memory. (See  Out of Memory 
message  on page 8-8.)
Paper Jam Inside The paper is jammed inside the 
machine. (See 
Paper jams  on page 11-7.)
Paper Jam Rear The paper is jammed in the back of the 
machine. (See 
Paper jams  on page 11-7.)
Paper Jam Tray The paper is jammed in the paper tray 
of the machine. (See 
Paper jams  on page 11-7.)
Scanner Locked The scanner glass’s sensor does not 
move to the home position.  (For MFC-7420) 
When you turn off the machines power switch its 
memory will be cleared. To check whether the 
machine has faxes in its memory see 
Checking if the 
machine has faxes in its memory  on page 11-5. If there 
are faxes you need to save them before following the 
suggestions below. (See  Transferring faxes to your PC  
on page 11-5 or  Forwarding faxes to another fax 
machine  on page 11-5.)
Turn off the machines power switch and then on 
again. If the error message continues, leave the 
machine for several minutes and try it again.
(For MFC-7820N)  
Turn off the machines power switch and then on 
again. If the error message continues leave the 
machine for several minutes and then try it again. (The 
machine can be turned off for up to 4 days without 
losing faxes stored in the memory.)
ERROR MESSAGES
ERROR MESSAGE CAUSE ACTION 
						

							
Troubleshooting and routine maintenance11 - 4
11
Toner Life EndThe toner cartridge and drum unit 
assembly are not installed or is not 
installed properly.
—OR —
The toner is used up and printing is not 
possible. Re-install the toner cartridge and drum unit assembly.
—
OR —
Replace the toner cartridge with a new one. 
(See  Replacing the toner cartridge TN-2000  on page 
11-25.)
Toner Low If the LCD shows Toner Low, you can 
still print, however, the machine is 
telling you that toner is near the end of 
its life and will soon need replacing. Order a new toner cartridge now.
Unable to Init.
Unable to Print
Unable to Scan The machine has a mechanical 
problem.
(For MFC-7420) 
When you turn off the machines power switch its 
memory will be cleared. To check whether the 
machine has faxes in its memory see 
Checking if the 
machine has faxes in its memory  on page 11-5. If there 
are faxes you need to save them before following the 
suggestions below. (See  Transferring faxes to your PC  
on page 11-5 or  Forwarding faxes to another fax 
machine  on page 11-5.)
Turn off the machines power switch and then on 
again. If the error message continues, leave the 
machine for several minutes and try to print, copy or 
scan again.
(For MFC-7820N)  
Turn off the machines power switch and then on 
again. If the error message continues leave the 
machine for several minutes and then try to print, copy 
or scan again. (The machine can be turned off for up 
to 4 days without losing faxes stored in the memory.)
Wrong Paper Size Paper is not the correct size. Load the correct size of paper (Letter or A4) and then 
press Start.
ERROR MESSAGES
ERROR MESSAGE CAUSE ACTION 
						

							
Chapter 11
11 - 5
Checking if the machine has faxes in 
its memory
1Press  Menu/Set , 9,  0, 1.
2If the LCD shows No Data, there are no 
faxes left in the machine’s memory.
— OR —
If the LCD shows 
Enter Fax No. 
there are faxes in the machine’s 
memory.
Note
You can transfer the Fax Journal report to 
another fax machine by pressing  Menu/Set, 
9 , 0, 2 in Step 1.
 You can transfer the faxes to another fax 
machine. See  Forwarding faxes to 
another fax machine .
 You can transfer the faxes from the  machine’s memory to your PC. See 
Transferring faxes to your PC .
Forwarding faxes to another fax 
machine
If you have not set up your Station ID you 
cannot enter fax forward mode.
1Enter the fax number to which the faxes 
will be forwarded.
2Press Start.
Transferring faxes to your PC
You can transfer the faxes from your 
machine’s memory to your PC.
1Press  Stop/Exit .
2Make sure you have installed  MFL-Pro 
Suite  on your PC, and then turn on  PC 
Fax Receiving  on the PC. (For details 
about PC Fax Receive, see Using 
Brother PC-Fax Software in the 
Software User’s Guide on the 
CD-ROM.)
3Make sure you have set 
PC Fax Receive on the machine. 
(See  Setting PC Fax Receive  on page 
6-2.)
During setup the LCD will ask if you 
want to transfer the faxes to your PC.
4To transfer all faxes to your PC, press  1.
— OR —
To exit and leave the faxes in the 
memory, press  2.
Note
If there is an error on the machine’s LCD, 
after the faxes have been transferred 
disconnect the machine from the power 
source for several minutes, and then 
reconnect it.