Brother 7820 N Manual

							
Troubleshooting and routine maintenance11 - 26
11
2Hold down the lock lever on the left and 
pull the toner cartridge out of the drum 
unit.
3Unpack the new toner cartridge. Place 
the used toner cartridge into the 
aluminium bag and discard it according 
to local regulations. 
CAUTION
■Place the drum unit on a drop cloth or 
large piece of disposable paper to 
avoid spilling and scattering the toner.
■Handle the toner cartridge carefully. If 
toner scatters on your hands or 
clothes, immediately wipe it off or wash 
it with cold water.
CAUTION
■Brother printers are designed to work 
with toner of a particular specification 
and will work to a level of optimum 
performance when used with genuine 
Brother branded toner cartridges 
(TN-2000 ). Brother cannot guarantee 
this optimum performance if toner or 
toner cartridges of other specifications 
are used. Brother does not therefore 
recommend the use of cartridges other 
than genuine Brother branded 
cartridges with this printer. 
■If damage is caused to the drum unit or 
other part of this machine as a result of 
using other manufacturer’s products 
with this machine, any repairs required 
as a result may not be covered by the 
warranty.
■Wait to unpack the toner cartridge until 
immediately before you install it in the 
machine. If a toner cartridge is left 
unpacked for a long period of time, the 
toner life is shortened.
■Do not touch the shaded parts shown 
in the illustrations to prevent any 
degradation to the print quality. 
						

							
Chapter 11
11 - 27
4Gently rock the toner cartridge from side 
to side five or six times to distribute the 
toner evenly inside the cartridge.
5Remove the protective cover. 
6Insert the new toner cartridge in the 
drum unit until it clicks into place. If you 
put it in properly, the lock lever will lift 
automatically.
7Clean the primary corona wire inside the 
drum unit by gently sliding the blue tab 
from right to left several times. Return 
the blue tab to the Home position (
▼) 
before reinstalling the drum unit and 
toner cartridge assembly.
8Install the drum unit and toner cartridge 
assembly in the machine.
9Close the front cover. 
						

							
Troubleshooting and routine maintenance11 - 28
11
Replacing the drum unit 
(DR-2000)
The machine uses a drum unit to create print 
images on paper. If the LCD shows 
Change Drum Soon, the drum unit is near 
the end of its life and it is time to buy a new 
one.
Even if the LCD shows 
Change Drum Soon, 
you may be able to continue printing without 
having to replace the drum unit for a while. 
However, if there is a noticeable deterioration 
in the output print quality (even before 
Change Drum Soon appears), then the 
drum unit should be replaced. You should 
clean the machine when you replace the 
drum unit. (See  Cleaning the laser scanner 
window  on page 11-23.)
Note
The drum unit is a consumable item, and it is 
necessary to replace it periodically. There are 
many factors that determine the drum life, 
such as temperature, humidity, type of paper 
and how much toner you use for the number 
of pages per print job. The estimated drum life 
is up to  12,000 pages. The actual number of 
pages your drum will print may be 
significantly less than these estimates. 
Because we have no control over the many 
factors that determine the actual drum life, we 
cannot guarantee a minimum number of 
pages that will be printed by your drum.
1Open the front cover and pull out the 
drum unit and toner cartridge assembly. 
CAUTION
When removing the drum unit, handle it 
carefully because it contains toner. If toner 
scatters and your hands or clothes get 
dirty, immediately wipe or wash with cold 
water.
WARNING
Just after you have used the machine, 
some internal parts of the machine are 
extremely  HOT! So please be careful.
CAUTION
To prevent damage to the printer from 
static electricity, do not touch the 
electrodes shown below. 
						

							
Chapter 11
11 - 29
2Hold down the lock lever on the left and 
pull the toner cartridge out of the drum 
unit. 
Note
Discard the used drum unit according to local 
regulations, keeping it separate from 
domestic waste. Be sure to seal the drum unit 
tightly so toner powder does not spill out of 
the unit. If you have questions, call your local 
waste disposal office.
3Unpack the new drum unit.
4Install the toner cartridge into the new 
drum unit until it clicks into place. If you 
put it in properly, the lock lever will lift 
automatically.
5Install the drum unit and toner cartridge 
assembly in the machine.
Do not close the front cover.
6Press  Options .
To confirm you are installing a new 
drum, press  1.
7When the LCD shows Accepted, close 
the front cover.
Note
If toner scatters and your hands or clothes get 
dirty, immediately wipe off or wash with cold 
water.
CAUTION
Wait to unpack the new drum unit until 
immediately before installing it. Place the 
old drum unit into the plastic bag.
Replace Drum?
1.Yes 2.No 
						

							
Troubleshooting and routine maintenance11 - 30
11
Machine Information
Checking the Serial Numbers
You can view the machine’s serial number on 
the LCD.
1MFC-7420: Press Menu/Set, 4 , 1.
MFC-7820N: Press  Menu/Set, 6 , 1.
2Press  Stop/Exit .
Checking the Page Counters
You can view the machine’s page counters 
for copies, printer pages, reports and lists, 
faxes or a summary total.
1MFC-7420: Press  Menu/Set, 4 , 2.
MFC-7820N: Press  Menu/Set, 6 , 2.
2Press ▲ or ▼ to select Total, Copy, 
Print or List/Fax.
3Press  Stop/Exit .
Checking the Drum Life
You can view the machine’s drum life on the 
LCD.
1MFC-7420: Press  Menu/Set, 4,  3.
MFC-7820N: Press  Menu/Set, 6 , 3.
2Press  Stop/Exit .Serial No.
XXXXXXXXXXX
Machine Info.
2.Page Counter
Page Counter
Total     :XXXXX
Page Counter
Copy      :XXXXX
Page Counter
Print     :XXXXX
Page Counter
List/Fax  :XXXXX
Drum Life
Remaining:XXX% 
						

							
A - 1
A
Telephone services
BT Call Sign
This machine feature lets you use the BT Call 
Sign subscriber service which allows you to 
have at least two separate telephone 
numbers on one phone line. Each phone 
number has its own distinctive ringing 
pattern, so you know which phone number is 
ringing. This is one way you can have a 
separate phone number for your machine.
Your machine has a BT Call Sign compatible 
distinctive ringing function, allowing you to 
dedicate a second phone number (on the 
same phone line) just for receiving faxes.
Note
■You can switch BT Call Sign off 
temporarily, then turn it back on. When 
you get a new fax number, make sure you 
reset this function. The machine will 
automatically answer incoming calls that 
use your new fax number.
■When you set the BT Call Sign feature to 
ON, the receive mode is set to 
Manual 
automatically. 
Manual mode will not 
respond to incoming telephone calls, 
since the number you use for telephone 
calls will use the normal ring pattern.
To enable the machine to work with BT 
Call Sign (Only with your external 
phone)
1Press  Menu/Set , 2,  0, 2.
The screen displays the current setting 
of this feature.
2Press ▲ or ▼ to select On (or Off).
3Press  Menu/Set .
4Press Stop/Exit .
Note
If you turn off BT Call Sign, the receive mode 
stays set to 
Manual. You will need to set 
receive mode again. (See  Choosing the 
Receive Mode  on page 4-1.)
Appendix A 
						

							
Appendix AA - 2
Advanced receiving 
operations
Operation from extension 
telephones
If you answer a fax call on an extension, or an 
external telephone that is correctly connected 
to the machine into the correct socket on the 
machine, you can make your machine take 
the call by using the Fax Receive Code. 
When you press the Fax Receive Code  51, 
the machine starts to receive the fax.
If you answer a call and no one is on the line, 
you should assume that you’re receiving a 
manual fax.
■Press  51 and wait for the chirp or until 
the machine’s LCD displays 
Receiving, 
and then hang up.
Note
You can also use the Fax Detect feature to 
make your machine automatiacally take the 
call. (See  Fax Detect  on page 4-3.)
For Fax/Tel mode only
When the machine is in Fax/Tel mode, it will 
use the F/T Ring Time 
(pseudo/double-ringing) to alert you to pick 
up a voice call.
Lift the external telephones handset, and 
then press  Tel/R to answer.
If you’re at an extension phone, you’ll need to 
lift the handset during the F/T Ring Time and 
then press  #51 between the pseudo/double 
rings. If no one is on the line, or if someone 
wants to send you a fax, send the call back to 
the machine by pressing  51.
Using a cordless external 
handset
If the base unit of the cordless telephone to 
the machine is connected (see page A-3) and 
you typically carry the cordless handset 
elsewhere, it is easier to answer calls during 
the Ring Delay. If you let the machine answer 
first, you will have to go to the machine so you 
can press  Tel/R to transfer the call to the 
cordless handset. 
						

							
A - 3
Changing the remote codes
If you want to use Remote Activation, you 
have to turn on the remote codes. The preset 
Fax Receive Code is 51. The preset 
Telephone Answer Code is  #51. If you want 
to, you can replace them with your own 
codes.
1If it is not illuminated in green, press 
 (Fax ).
2Press  Menu/Set , 2,  1, 4.
3Press ▲ or ▼ to select On (or Off).
Press  Menu/Set .
4Enter the new Fax Receive Code.
Press Menu/Set .
5Enter the new Telephone Answer Code.
Press Menu/Set .
6Press Stop/Exit .
Note
■If you are always disconnected when 
accessing your external TAD remotely, try 
changing the Fax Receive Code and 
Telephone Answer Code to another 
three-digit code using the numbers  0-9 , 
,  # .
■Remote Codes might not work with some 
telephone systems. 
Connecting an external 
device to your machine
Connecting an external 
telephone
You can connect a separate telephone to 
your machine as shown in the diagram below.
When you are using an external phone, the 
LCD shows 
Telephone.
Setup Receive
4.Remote Code
Extension 
Telephone
External 
Telephone
(Example for the U.K.) 
						

							
Appendix AA - 4
Connecting an external 
telephone answering device 
(TAD)
Sequence
You may choose to connect an external 
answering device. However, when you have 
an external  TAD on the same telephone line 
as the machine, the TAD answers all calls 
and the machine “listens” for fax calling 
(CNG) tones. If it hears them, the machine 
takes over the call and receives the fax. If it 
does not hear CNG tones, the machine lets 
the TAD continue playing your outgoing 
message so your caller can leave you a voice 
message.
The TAD must answer within four rings (the 
recommended setting is two rings). The 
machine cannot hear CNG tones until the 
TAD has answered the call, and with four 
rings there are only 8 to 10 seconds of CNG 
tones left for the fax “handshake”. Make sure 
you carefully follow the instructions in this 
guide for recording your outgoing message. 
We do not recommend using the toll saver 
feature on your external answering machine if 
it exceeds five rings.
Note
If you do not receive all your faxes, reduce the 
Ring Delay setting on your external TAD.
When the TAD answers a call, the LCD 
shows 
Telephone.
Connections
The external TAD must be connected as 
shown in the previous illustration.
1Set your external TAD to one or two 
rings. (The machine’s Ring Delay 
setting does not apply.)
2Record the outgoing message on your 
external TAD.
3Set the TAD to answer calls.
4Set the Receive Mode to 
External TAD. (See  Choosing the 
Receive Mode  on page 4-1.)
Improper Setup
Do not connect a TAD elsewhere on the 
same phone line.
TAD
TAD
(Example for the U.K.) 
						

							
A - 5
Recording outgoing message (OGM) 
on an external TAD
Timing is important in recording this 
message.
1Record 5 seconds of silence at the 
beginning of your message. (This allows 
your machine time to listen for the fax 
CNG tones of automatic transmissions 
before they stop.)
2Limit your speaking to 20 seconds.
Note
We recommend beginning your OGM with an 
initial 5-second silence because the machine 
cannot hear fax tones over a resonant or loud 
voice. You may try omitting this pause, but if 
your machine has trouble receiving, then you 
must re-record the OGM to include it.
Using extension telephones
It may be that your premises are already 
wired with parallel extension telephones, or 
you intend to add extension telephones to 
your line, in addition to your machine. While 
the simplest arrangement is straightforward 
parallel connection, there are some reasons 
as to why this arrangement will cause 
unsatisfactory service, the most obvious of 
which is inadvertent interruption of a facsimile 
transmission by someone picking up an 
extension telephone in order to make an 
outgoing call. Additionally, Fax receive code 
may not operate reliably in such a simple 
configuration.
This machine may also be set to make a 
delayed transmission (i.e. a transmission at a 
pre-set time). This pre-set job may coincide 
with someone picking up an extension 
handset.
Such problems can easily be eliminated 
however, if you arrange modification of your 
extension wiring circuit, such that extension 
devices are connected “downstream” of your 
machine, in a master/slave configuration (see 
fig. 2 on next page). In such a configuration, 
this machine can always detect whether a 
telephone is in use, thus it will not attempt to 
seize the line during that time. This is known 
as “telephone off-hook detection.”
The inadvisable configuration is shown in 
figure 1 on the next page, and the 
recommended master/slave configuration is 
shown in figure 2.
This new connection configuration can be 
arranged by contacting BT, Kingston upon 
Hull Telecommunications, your PABX (PBX) 
maintainer or a qualified telephone 
installation company as appropriate. Simply 
explained, the extension telephone circuit 
should be terminated on a normal modular 
plug (BT 431A style), which in turn should be 
inserted into the modular socket of the white 
“T”-shaped connector provided as part of the 
line cord assembly.