Brother Mfc 8370dn User Manual

							140
Paper is jammed at the back of the 
machine
C
aUnplug the telephone line cord first, 
disconnect all cables, and then unplug 
the power cord from the electrical 
socket.
bPress the front cover release button and 
open the front 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.
 
cSlowly take out the drum unit and toner 
cartridge assembly.
 
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.
 
dOpen the back cover (back output tray).  
ePull the tabs at the left and right hand 
sides toward you to open the fuser 
cover (1).
 
fPull the jammed paper out of the fuser 
unit.
 
gClose the fuser cover and back cover 
(back output tray).
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							Troubleshooting and routine maintenance
141
C
hPut the drum unit and toner cartridge 
assembly back in the machine.
 
iClose the front cover.
jPlug the machine’s power cord back into 
the electrical socket first, and reconnect 
all cables and telephone line cord. Turn 
on the machine’s power switch.
Paper is jammed in the duplex trayC
aPull the duplex tray completely out of the 
machine.
 
bPull the jammed paper out of the 
machine or the duplex tray.
 
cPut the duplex tray back in the machine. 
 
						

							142
Routine maintenanceC
WARNING 
Use neutral detergents.
  
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 103.)
 
IMPORTANT
The drum unit contains toner, so handle it 
carefully. If toner scatters on your hands 
or clothes, wipe or wash it off with cold 
water at once.
 
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.
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.
 
						

							Troubleshooting and routine maintenance
143
C
Cleaning the scannerC
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.
 
1
3
2
1
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							144
Cleaning the laser scanner 
windowC
WARNING 
Use neutral detergents.
  
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 103.
 
IMPORTANT
DO NOT touch the laser scanner window 
with your fingers.
 
aBefore you clean the inside of the 
machine, turn off the machine. Unplug 
the telephone line cord first, and then 
disconnect all cables and the power 
cord from the electrical socket.
bOpen the front cover and slowly take out 
the drum unit and toner cartridge 
assembly.
 
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
• To prevent damage to the machine 
caused by static electricity, DO NOT touch 
the electrodes shown in the illustration.
 
• We recommend that you place the drum 
unit on a clean, flat surface with a sheet of 
disposable paper or cloth underneath it in 
case you accidentally spill or scatter toner.
 
cWipe the laser scanner window (1) by 
wiping it with a dry, lint-free soft cloth.
 
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							Troubleshooting and routine maintenance
145
C
dPut the drum unit and toner cartridge 
assembly back in the machine.
 
eClose the front cover.
fPlug the machine’s power cord back into 
the electrical socket first, and then plug 
in the telephone line cord. Turn on the 
machine.
Cleaning the corona wireC
If you have print quality problems, clean the 
corona wire 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.
bOpen the front cover and slowly take out 
the drum unit and toner cartridge 
assembly.
 
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.
• Handle the toner cartridge carefully. If 
toner scatters on your hands or clothes, 
wipe or wash it off with cold water at once.
• To prevent damage to the machine 
caused by static electricity, DO NOT touch 
the electrodes shown in the illustration.
 
 
 
						

							146
cClean the corona wire inside the drum 
unit by gently sliding the blue tab from 
right to left and left to right several times.
 
Note
Be sure to return the blue tab to the home 
position (a) (1). If you do not, printed 
pages may have a vertical stripe.
 
dPut the drum unit and toner cartridge 
assembly back in the machine.
 
eClose the front cover.
fPlug the machine’s power cord back into 
the electrical socket first, and then 
reconnect all cables and telephone line 
cord. Turn on the machine.
IMPORTANT
To avoid print quality problems, DO NOT 
touch the shaded parts shown in the 
illustrations below.
 
 
Cleaning the drum unitC
If you have print quality problems, clean the 
drum unit as follows.
aTurn off the machine. Unplug the 
telephone line cord first, and then 
unplug the power cord from the 
electrical socket. 
bOpen the front cover and slowly take out 
the drum unit and toner cartridge 
assembly.
 
IMPORTANT
• We recommend that you put 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 
caused by static electricity, DO NOT touch 
the electrodes shown in the illustration.
 
 
1
 
						

							Troubleshooting and routine maintenance
147
C
cPush down the blue lock lever and take 
the toner cartridge out of the drum unit. 
 
IMPORTANT
• Handle the toner cartridge carefully. If 
toner scatters on your hands or clothes, 
wipe or wash it off with cold water at once.
• To avoid print quality problems, DO NOT 
touch the shaded parts shown in the 
illustrations below.
 
 
dPut the print sample in front of the drum 
unit, and find the exact position of the 
poor print.
 
eTurn the drum unit gear by hand while 
looking at the surface of the OPC 
drum (1).
 
fWhen you have found the mark on the 
drum that matches the print sample, 
wipe the surface of the OPC drum with a 
dry cotton swab until the dust or glue on 
the surface comes off.
 
IMPORTANT
• The drum is photosensitive so DO NOT 
touch it with your fingers.
• DO NOT clean the surface of the 
photosensitive drum with a sharp object.
• DO NOT use excessive force when 
cleaning the drum unit.
 
gPut the toner cartridge back into the 
drum unit until you hear it lock into place. 
If you put the cartridge in correctly, the 
blue lock lever will lift automatically.
 
hPut the drum unit and toner cartridge 
assembly back in the machine.
 
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							148
iClose the front cover.
jPlug the machine’s power cord back into 
the electrical socket first, and then 
reconnect all cables and telephone line 
cord. Turn on the machine.
 
						

							Troubleshooting and routine maintenance
149
C
Replacing the consumable itemsC
You will need to replace the consumable items when the machine indicates that the life of the 
consumable is over.
IMPORTANT
• We recommend placing used consumable items on a sheet of paper to prevent accidentally 
spilling or scattering the material inside.
• Be sure to reseal the consumable items tightly so that the material inside does not spill.
 
Note
• Discard used consumable items according to local regulations. (See EU Directive 2002/96/EC 
and EN50419 on page 106.) If you choose not to return your used consumable, please discard 
the used consumable according to local regulations, keeping it separate from domestic waste. 
If you have questions, call your local waste disposal office.
• If you use paper that is not a direct equivalent for the recommended paper, the life of 
consumable items and machine parts may be reduced.
 
Toner cartridgeDrum unit
  
Order No. TN-3230, TN-3280 Order No. DR-3200