Brother MFC 8420 User Manual

1 - 5   INTRODUCTION
■Inside view (Document cover open) 
No.Name Description
21Document Guidelines Use to center the original on the scanner glass.
22Glass Strip This is used to scan the original when using the 
ADF.
23Scanner  Lock  Lever Use to lock/unlock the scanner when relocating the 
MF C .
24Document Cover Open to place the original on the scanner glass.
25White Film Clean it for good quality copying and scanning.
26Scanner Glass Place the original to be scanned here.
25 White Film 24 Document...

INTRODUCTION   1 - 6
Control panel overview
MFC-8420, MFC-8820D and MFC-8820DN have similar control 
panel keys.
6
12
7
4
1
3
9
5
8
10
11
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1 - 7   INTRODUCTION
1
67
4235
1 Shift
To access memory locations 21 
through 40 in the One-Touch keys 
hold down the Shift key.
2 One-Touch keys
These 20 keys give you instant 
access to 40 previously stored dial 
numbers.
3 Print keys:
Secure
Lets you print out data saved in 
memory by entering your four-digit 
password.
Job cancel
Clears data from the printer 
memory.
4  Status LED
(Light-Emitting Diode)
The LED will flash and change color 
depending on the MFC status.
5 5-Line Liquid Crystal Display...

INTRODUCTION   1 - 8
6 Mode keys:
 Fax
Lets you access Fax mode.
 Copy
Lets you access Copy mode.
 Scan
Lets you access Scan mode.
7 Fax and telephone keys:
Hook
Press before dialing if you want to 
make sure a fax machine will 
answer, and then press Start.
Resolution
Sets the resolution when you send a 
fax.
Search/Speed Dial
Lets you look up numbers that are 
stored  in the dialing memory. It  also 
lets you dial stored numbers by 
pressing 
# and a three-digit 
number.
Redial/Pause
Redials the last...

1 - 9   INTRODUCTION
12
981011
8 Navigation keys:
Menu
Lets you access the Menu to 
program.
Set
Lets you store your settings in the 
MFC.
Clear/Back
Deletes entered data or lets you exit 
the menu by pressing repeatedly. or 
Press to scroll forward or backward 
to a menu selection.
When using  the speaker  or ring,  you 
can press these keys to adjust the 
volume in fax mode.
 or 
Press to scroll through the menus 
and options.
Also, you can use these keys to do 
a numerial search for the names of...

INTRODUCTION   1 - 10
9 Copy keys
(Temporary settings):
Enlarge/Reduce
Lets you reduce or enlarge copies 
depending upon the ratio you 
select.
Contrast
Lets you make a copy that is lighter 
or darker than the original.
Quality
Lets you select the copy quality for 
your type of original.
Tray Select
You can select which tray you would 
like to use for the next copy.
Sort
Lets you sort multiple copies using 
the ADF.
N in 1 (For MFC-8420)
N in 1 lets you copy 2 or 4 pages 
onto one page.
Duplex/N in 1...

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Status LED indications
The  St atu s LED (Light Emitting Diode) will flash and change color 
depending on the MFC status.
The LED indications shown in the table below are used in the 
illustrations in this chapter.
LED LED status
LED is off.
Green Yellow RedLED is on.
Green Yellow RedLED is blinking.
LED MFC status Description
Sleep Mode The power switch is off or the MFC is in Sleep 
mode.
GreenWarming Up The MFC is warming up for printing.
GreenReady The MFC is ready to print....

INTRODUCTION   1 - 12 RedService error Follow the steps below.
1.  Turn off the power switch.
2.  Wait a few  seconds, and  then turn it  back on 
and try to print again.
If you cannot clear the error and see the same 
service call indication after turning the MFC 
back on, please call Brother Customer Service 
at: 1-800-284-4329 (in USA) or 
1-877-BROTHER (in Canada).
RedCover open The cover is open. Close the cover. (See Error 
messages on page 22-1.)
Toner empty Replace the toner cartridge with a new...

1 - 13   INTRODUCTION
About fax machines
Custom features
Do you have Voice Mail on the phone line?
If you have Voice Mail on the phone line where you will install your 
new MFC, there is a strong possibility that Voice Mail and the MFC 
may conflict with each other while receiving incoming calls.
Why should there be problems?
Since both the MFC and Voice Mail will pick up the call, after the 
number of rings you have set, each of them has the ability to keep 
the other from receiving calls.
For example,...

INTRODUCTION   1 - 14
Fax tones and handshake
When someone is sending a f ax, the MFC sends fax calling tones 
(CNG tones).  These are quiet, intermit tent beeps every 4-seconds.  
You’ll hear them after you dial and press 
Start and they will cont inue 
for about 60 seconds after dialing. During that time, the sending 
machine must begin the “handshake”, or connection, with the 
receiving machine.
Each time you use aut omatic procedures to send a fax, you are 
sending CNG tones over the phone line....