Brother MFC 9120CN User Manual

							
Troubleshooting and routine maintenance149
C
Document jamsC
If the document is jammed, follow the steps 
below.
IMPORTANT
After removing a jammed document, 
check that no paper scraps are left in the 
machine that could cause another jam.
 
Document is jammed in the top of the 
ADF unit
C
aTake out any paper from the ADF that is 
not jammed.
bOpen the ADF cover.
cPull the jammed document out to the 
left.
 
dClose the ADF cover.
ePress Stop/Exit .
Document is jammed under the 
document cover
C
aTake out any paper from the ADF that is 
not jammed.
bLift the document cover.
cPull the jammed document out to the 
right.
 
dClose the document cover.
ePress Stop/Exit .
Document is jammed at the output 
tray
C
aTake out any paper from the ADF that is 
not jammed.
bPull the jammed document out to the 
right.
 
cPress Stop/Exit .
 
						

							
150
Paper jamsC
To clear paper jams, please follow the steps 
in this section.
IMPORTANT
Please confirm that you have installed all 
toner cartridges and drum units in the 
machine. Failure to install these items or 
incorrect installation may cause a paper 
jam in your Brother machine.
 
Note
If the error message remains, open and 
close the top cover and fuser cover firmly 
to reset the machine.
 
Note
The LCD names for the paper trays are as 
follows:• Standard paper tray:  Tray
• Manual Feed Slot:  Manual Feed
 
Paper is jammed in the Paper TrayC
If the LCD shows Jam Tray, follow these 
steps:
aPull the paper tray completely out of the 
machine.
 
bUse both hands to slowly pull out the 
jammed paper.
 
IMPORTANT
If the paper cannot easily be removed in 
this direction, stop and follow the 
instructions for  Paper is jammed inside the 
machine  on page 153.
 
Note
Pulling out the jammed paper downwards 
allows you to remove the paper easier.
 
 
						

							
Troubleshooting and routine maintenance151
C
cMake sure the paper is below the 
maximum paper mark (b) of the paper 
tray. While pressing the green paper-
guide release lever, slide the paper 
guides to fit the paper size. Make sure 
that the guides are firmly in the slots 
(See  Loading paper in the standard 
paper tray  on page 11).
dPut the paper tray firmly back in the 
machine.
ePress Mono Start  or Colour Start  to 
resume printing.
Paper is jammed at the output paper 
tray
C
When the paper is jammed at the output 
paper tray, follow these steps:
aOpen the scanner using both hands. 
Note
When the top cover is open, you cannot 
open the scanner.
 
bPress down the green lever and remove 
the paper.
 
cPush the scanner down with both hands 
to close it.
 
 
						

							
152
Paper is jammed at the back of the 
machine
C
If the LCD shows Jam Rear, a paper jam 
has occurred behind the face-up output tray. 
Follow these steps:
aTurn off the machines power switch. 
Unplug the telephone line cord first, 
disconnect all cables, and then unplug 
the power cord from the electrical 
socket.
bOpen the back cover. 
CAUTION 
HOT SURFACE
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. Wait at least 10 minutes for 
the machine to cool down before attempting 
to clear the paper jam.
 
cPush down and pull the green tabs at 
the left and right hand sides toward you 
and fold down the fuser cover (1).
 
dUsing both hands, gently pull the 
jammed paper out of the fuser unit.
 
eClose the fuser cover (1). 
fFully close the back cover.
gPlug the machines power cord back into 
the electrical socket first, and reconnect 
all cables and telephone line cord. Turn 
on the machines power switch.
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Troubleshooting and routine maintenance153
C
Paper is jammed inside the machineC
If the LCD shows Jam Inside, follow these 
steps:
aTurn off the machine. Unplug the 
telephone line cord first, disconnect all 
cables, and then unplug the power cord 
from the electrical socket.
bFully open the top cover by lifting up on 
the handle (1).
 
CAUTION 
HOT SURFACE
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. Wait at least 10 minutes for 
the machine to cool down before attempting 
to clear the paper jam.
 
IMPORTANT
When the scanner is open, you cannot 
open the top cover.
 
cTake out all the drum unit and toner 
cartridge assemblies. Repeat this for all 
the drum unit and toner cartridge 
assemblies.
 
IMPORTANT
• We recommend that you place the drum  unit and toner cartridge assemblies 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.
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154
• To avoid print quality problems, DO NOT touch the shaded parts shown in the 
illustrations.
 
 
 
 
dPull out the jammed paper slowly. 
eSlide 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
fClose the top cover.
gPlug the machine’s power cord back into 
the electrical socket first, and reconnect 
all cables and telephone line cord. Turn 
on the machine.
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Troubleshooting and routine maintenance155
C
Routine maintenanceC
Clean the outside and inside of the machine 
regularly with a dry, lint-free cloth. When you 
replace the toner cartridge or the drum unit, 
make sure that you clean the inside of the 
machine. If printed pages are stained with 
toner, clean the inside of the machine with a 
dry, lint-free cloth.
WARNING 
Use neutral detergents. Cleaning with 
volatile liquids such as thinner or benzine 
will damage the surface of the machine.
  
DO NOT use any flammable substances, 
spray or organic solvent/liquids containing 
alcohol/ammonia to clean the inside or 
outside of the machine. Doing this may 
cause a fire or electrical shock. (For more 
information see Important Safety 
Instructions  on page 114.)
 
 
 
Be careful not to inhale toner.
 
Cleaning the outside of the 
machineC
aTurn off the machine. Unplug the 
telephone line cord first, disconnect all 
cables, and then unplug the power cord 
from the electrical socket.
bPull the paper tray completely out of the 
machine.
 
cWipe the outside of the machine with a 
dry, lint-free soft cloth to remove dust.
 
dRemove any paper that is in the paper 
tray.
 
						

							
156
eWipe the inside and the outside of the 
paper tray with a dry, lint-free soft cloth 
to remove dust.
 
fRe-load the paper and put the paper tray 
firmly back in the machine.
gPlug the machine’s power cord back into 
the electrical socket first, and reconnect 
all cables and telephone line cord. Turn 
on the machine.
Cleaning the scanner glassC
aTurn off the machine. Unplug the 
telephone line cord first, disconnect all 
cables and then unplug the power cord 
from the electrical socket.
bLift the document cover (1).
Clean the white plastic surface (2) and 
scanner glass (3) underneath it with a 
soft lint-free cloth moistened with water.
 
cIn the ADF unit, clean the white bar (1) 
and the scanner glass strip (2) 
underneath it with a soft lint-free cloth 
moistened with water.
 
dPlug the machine’s power cord back into 
the electrical socket first, and reconnect 
all cables and telephone line cord. Turn 
on the machine.
Note
In addition to cleaning the scanner glass 
and glass strip with a soft lint-free cloth 
moistened with water, run your finger tip 
over the glass to see if you can feel 
anything on it. If you feel dirt or debris, 
clean the glass again concentrating on 
that area. You may need to repeat the 
cleaning process three or four times. To 
test, make a copy after each cleaning.
 
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Troubleshooting and routine maintenance157
C
Cleaning the LED headsC
WARNING 
DO NOT use any flammable substances, 
spray or organic solvent/liquids containing 
alcohol/ammonia to clean the inside or 
outside of the machine. Doing this may 
cause a fire or electrical shock. For more 
information see Important Safety 
Instructions  on page 119.
 
IMPORTANT
DO NOT touch the windows of the LED 
heads with your fingers.
 
aBefore you clean the inside of the 
machine, turn 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.
 
cWipe the windows of the LED heads (1) 
with a dry, lint-free cloth. Be careful not 
to touch the windows of the LED 
heads (1) with your fingers.
 
dClose the top cover of the machine.
ePlug the machine’s power cord back into 
the electrical socket first, and then plug 
in the telephone line cord. Turn on the 
machine.
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158
Cleaning the corona wiresC
If you have print quality problems, clean the 
corona wires as follows:
aTurn off the machine. Unplug the 
telephone line cord first, disconnect all 
cables, 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 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.
 
 
dClean the primary corona wire inside the 
drum unit by gently sliding the green tab 
from left to right and right to left several 
times.
 
Note
Be sure to return the tab to the home 
position ( a) (1). If you do not, printed 
pages may have a vertical stripe.
 
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