Brother DCP 8065DN User Manual

Troubleshooting and routine maintenance69
dWipe the inside of the paper tray with a 
soft cloth to remove dust.
 
eRe-load the paper and put the paper tray 
firmly back in the machine.
Cleaning the scanner glassC
aTurn off the machine’s power switch.
bLift the document cover (1).
Clean the white plastic surface (2) and 
scanner glass (3) underneath it with 
isopropyl alcohol on a soft lint-free cloth.
 
cIn the ADF unit, clean the white plastic 
bar (1) and the scanner glass strip (2) 
under it with...

70
Cleaning the laser scanner 
windowC
CAUTION 
DO NOT use isopropyl alcohol to clean the 
laser scanner window.
  
DO NOT touch the laser scanner window 
with your fingers.
 
aTurn off the machine’s power switch. 
Unplug the power cord from the AC 
power outlet.
bOpen the front cover and take out the 
drum unit and toner cartridge assembly.
 
HOT SURFACE 
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. When you open the front 
cover of the machine, DO...

Troubleshooting and routine maintenance71
dPut the drum unit and toner cartridge 
assembly back into the machine.
 
eClose the front cover.
fPlug the machine’s power cord back into 
the AC power outlet.
Turn on the machine’s power switch.
Cleaning the corona wireC
We recommend that you put the drum unit 
and toner cartridge assembly on a piece of 
disposable paper or cloth in case you 
accidentally spill or scatter toner.
aOpen the front cover and take out the 
drum unit and toner cartridge assembly....

72
cReturn the blue tab and snap it into the 
home position (b).
CAUTION 
If you do not return the blue tab to the home 
position ( b) your printed pages may have 
vertical black stripes on them.
 
dPut the drum unit and toner cartridge 
assembly back in the machine.
eClose the front cover.
Cleaning the drum unitC
aTake out the drum unit and toner 
cartridge assembly, and then take out 
the toner cartridge from the drum unit.
bPut the print sample in front of the drum 
unit, and find the exact position...

Troubleshooting and routine maintenance73
dWhen you find the substance on the 
drum surface that matches the print 
sample, gently dab the surface of the 
OPC drum with a cotton swab that is 
lightly dampened with isopropyl alcohol.
 
CAUTION 
The OPC drum is photosensitive so do not 
touch it with your fingers.
  Do not use a scrubbing or wiping motion 
because this might damage the drum.
  DO NOT clean the surface of the OPC 
drum with a sharp object, such as a ball-
point pen, because this might cause...

74
Replacing the toner cartridgeC
HOT SURFACE 
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. When you open the front or 
back cover of the machine, DO NOT touch 
the shaded parts shown in the illustration.
 
 
aOpen the front cover and take out the 
drum unit and toner cartridge assembly. 
 
CAUTION 
To prevent damage to the machine from 
static electricity, DO NOT touch the 
electrodes shown in the illustration.
 
 
bHold down the lock lever on the...

Troubleshooting and routine maintenance75
CAUTION 
Put 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, wipe or 
wash it off with cold water at once.
 
CAUTION 
Brother strongly recommends that you do 
not refill the toner cartridge provided with 
your machine. We also strongly 
recommend that you continue to use only 
Genuine Brother Brand replacement toner...

76
gClean the primary corona wire inside the 
drum unit by gently sliding the blue tab 
from left to right and right to left several 
times. Be sure to return the blue tab to 
the home position (b).
hPut the drum unit and toner cartridge 
assembly back in the machine.
iClose the front cover.
Replacing the drum unit 
(DR-520)C
The machine uses a drum unit to create print 
images on paper. If the LCD shows  Drum 
Near End , the drum unit is near the end of its 
life and it is time to buy a new one.
Even if...

Troubleshooting and routine maintenance77
HOT SURFACE 
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. When you open the front or 
back cover of the machine, DO NOT touch 
the shaded parts shown in the illustration.
 
 
aOpen the front cover and take out the 
drum unit and toner cartridge assembly. 
 
CAUTION 
To prevent damage to the printer from static 
electricity, DO NOT touch the electrodes 
shown in the illustration.
 
 
bHold down the lock lever on...

78
CAUTION 
Wait to unpack a new drum unit until 
immediately before installing it. Put the old 
drum unit into the plastic bag.
 
cUnpack the new drum unit.
dPut the toner cartridge firmly into the 
new drum unit until you hear it lock into 
place. If you put it in properly, the lock 
lever will lift automatically.
 
ePut the drum unit and toner cartridge 
assembly back in the machine.
Do not close the front cover.
fPress Clear/Back . 
Replace Drum?
a    1.Yesb     2.No
Select 
ab & OK
To confirm you...