Brother MFC 9120CN User Manual

							
Troubleshooting and routine maintenance179
C
• To avoid print quality problems, DO NOT touch the shaded parts shown in the 
illustrations.
 
 
 
 
dHold the green handle of the belt unit 
and lift the belt unit up, then pull it out.
 
h
 
 
						

							
180
IMPORTANT
To avoid print quality problems, DO NOT 
touch the shaded parts shown in the 
illustration.
 
 
 
eUnpack the new belt unit and put the 
new belt unit in the machine.
 
h
 
 
						

							
Troubleshooting and routine maintenance181
C
fSlide each drum unit and toner cartridge 
assembly into the machine. Make sure 
that you match the toner cartridge colour 
to the same colour label on the machine. 
Repeat this for all the drum unit and 
toner cartridge assemblies.
 
 
C-Cyan M-Magenta Y-Yellow K-Black
gClose the top cover of the machine. When you replace a belt unit with a new 
one, you need to reset the belt unit 
counter by completing the following 
steps:
C
aPlug the machine’s power cord back into 
the electrical socket first, and reconnect 
all cables and telephone line cord. Turn 
on the machine.
b(For MFC-9320CW) Press
Menu, 8, 4.
(For MFC-9120CN) Press Menu, 6, 4.
cPress  a or  b to select  Belt Unit . 
Press  OK.
dPress  1 to reset the belt unit counter.
ePress  Stop/Exit .
Replacing the waste toner 
boxC
Model name WT-200CL
A new waste toner box can print 
approximately 50,000 A4 or Letter size 
single-sided pages.
WT Box End Soon messageC
 
WT Box End Soon
If the LCD shows  WT Box End Soon , it 
means the waste toner box is near the end of 
its life. Buy a new waste toner box and have 
it ready before you get a  Replace WT Box 
message. 
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182
Replace WT Box messageC
When the following message appears on the 
LCD, you need to replace the waste toner 
box:
 
Replace WT Box
IMPORTANT
DO NOT reuse the waste toner box.
 
WARNING 
DO NOT put the waste toner box into a fire. 
It could explode.
  
Be careful not to spill the toner. DO NOT 
inhale or allow it to get into your eyes.
 
aTurn off the machine. Unplug the 
telephone line cord first, and then 
unplug the power cord from the 
electrical socket.
bFully open the top cover by lifting up on 
the handle (1).
 
IMPORTANT
When the scanner is open, you cannot 
open the top cover.
 
cTake out all the drum unit and toner 
cartridge assemblies.
 
IMPORTANT
• We recommend that you place the drum unit and toner cartridge assembly on a 
clean, flat surface with a sheet of 
disposable paper or cloth underneath it in 
case you accidentally spill or scatter toner.
• To prevent damage to the machine from  static electricity, DO NOT touch the 
electrodes shown in the illustration.
 
• Handle the toner cartridge carefully. If toner scatters on your hands or clothes, 
wipe or wash it off with cold water at once.
1
 
						

							
Troubleshooting and routine maintenance183
C
• To avoid print quality problems, DO NOT touch the shaded parts shown in the 
illustrations.
 
 
 
 
dHold the green handle of the belt unit 
and lift the belt unit up, then pull it out.
 
h
 
 
						

							
184
IMPORTANT
To avoid print quality problems, DO NOT 
touch the shaded parts shown in the 
illustration.
 
 
 
eRemove the orange packing material 
and discard it.
Note
This step is only necessary when you are 
replacing the waste toner box for the first 
time. The orange packing is installed at 
the factory to protect your machine during 
shipment. The orange packing is not 
required for replacement waste toner 
boxes.
 
 
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Troubleshooting and routine maintenance185
C
fHold the green handle of the waste toner 
box and remove the waste toner box 
from the machine.
 
CAUTION 
Handle the waste toner box carefully in 
case you accidentally spill or scatter toner. 
If toner scatters on your hands or clothes, 
wipe or wash it off with cold water at once.
 
Note
Discard the used waste toner box 
according to local regulations, keeping it 
separate from domestic waste. If you have 
questions, call your local waste disposal 
office.
 
gUnpack the new waste toner box and 
put it in the machine.
 
hPut the belt unit in the machine.
 
h
 
 
						

							
186
iSlide each drum unit and toner cartridge 
assembly into the machine. Make sure 
that you match the toner cartridge colour 
to the same colour label on the machine. 
Repeat this for all the drum unit and 
toner cartridge assemblies.
 
 
C-Cyan M-Magenta Y-Yellow K-Black
jClose the top cover of the machine.
Replacing periodic 
maintenance parts
C
The periodic maintenance parts will need to 
be replaced regularly to maintain the print 
quality. The parts listed below will have to be 
replaced after printing approximately 
50,000 pages
1. Please call your Brother 
dealer when the following messages appear 
on the LCD.
1A4 or Letter size single-sided pages.
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LCD messageDescription
Replace PF KitReplace the paper feeding kit 
for the paper tray.
Replace FuserReplace the fuser unit.
 
						

							
Troubleshooting and routine maintenance187
C
Machine InformationC
Checking the Serial NumberC
You can see the machine’s Serial Number on 
the LCD.
a(For MFC-9320CW) Press Menu, 8, 1.
(For MFC-9120CN) Press  Menu, 6, 1.
bPress  Stop/Exit .
Checking the Page CountersC
You can see the machine’s Page Counters 
for copies, printed pages, reports and lists, 
faxes or a summary total.
a(For MFC-9320CW) Press  Menu, 8, 2.
(For MFC-9120CN) Press  Menu, 6, 2.
bPress  a or  b to see  Total, Fax/List , 
Copy  or Print .
cPress Stop/Exit .
Checking the remaining life of 
partsC
You can see the machine’s parts life on the 
LCD.
a(For MFC-9320CW) Press  Menu, 8, 3.
(For MFC-9120CN) Press  Menu, 6, 3.
 
Machine Info.
3.Parts Life
bPress  a or  b to choose  1.Drum, 
2.Belt Unit , 3.PF Kit  or 
4.Fuser .
Press  OK.
cPress  Stop/Exit .
Reset FunctionsC
The following reset functions are available:
1Network
You can reset the print server back to its 
default factory settings such as the 
password and IP address information.
2 Address & Fax
Address & Fax resets the following 
settings:
„ Address Book
(One Touch Dial/Speed Dial/Setup 
Groups)
„ Programmed fax jobs in the memory
(Polled TX, Delayed Fax)
„ Station ID
(name and number)
„ Coverpage Msg
(comments)
„ Remote Fax Option
(Remote Access Code, Fax Storage, 
Fax Forwarding and PC-Fax)
„ Report settings
(Transmission Verification Report/Tel 
Index List/Fax Journal)
„ Setting Lock password
3 All Settings
You can reset all the machine settings 
back to the settings that were set at the 
factory.
Brother strongly recommends you 
perform this operation when you dispose 
of the machine.
Note
Unplug the interface cable before you 
choose  Network  or All Settings .
 
 
						

							
188
How to reset the machineC
a(for New Zealand) Press Menu, 0, 6.
Press  Menu, 0, 7.
 
Initial Setup
7.Reset
bPress  a or  b to choose the reset function 
you want to use.
Press  OK.
cDo one of the following;
„ To reset the settings, press  1 and go 
to step d.
„ To exit without making changes, 
press  2 and go to step e.
dYou will be asked to reboot the machine. 
Do one of the following;
„ To reboot the machine press  1. The 
machine will begin the reset.
„ To exit without rebooting the 
machine, press  2. Go to step e.
ePress  Stop/Exit .
Note
You can also reset the Network settings by 
pressing 
Menu, 7, 0 (for MFC-9320CW) or 
Menu, 5, 0 (for MFC-9120CN).
 
Packing and shipping 
the machine
C
When you transport the machine, use the 
packing materials that came with your 
machine. If you do not pack the machine 
correctly, you could void your warranty.
CAUTION 
When shipping the machine, each drum 
unit / toner cartridge assembly and the 
waste toner box must be removed from the 
machine and put in a plastic bag. Failure to 
remove these items and put them in plastic 
bags before shipping may cause severe 
damage to the machine and may void the 
warranty.
 
Make sure that you have the following parts 
for repacking:
 
1 Plastic bags – to be supplied by you, the 
user; one for the waste toner box, and one 
each for the four drum and toner cartridge 
assemblies
2 Protective covers that were attached to the  original drum and toner cartridge 
assemblies
3 Packing material for locking the belt unit
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2
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