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....

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...

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...

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...

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.
...

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...

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...

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...

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...

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...