Brother DCP 9045CDN User Manual

Troubleshooting and routine maintenance
103
C
CAUTION 
We recommend that you place the toner 
cartridges on a clean, flat surface with a 
piece of disposable paper underneath it in 
case you accidentally spill or scatter toner.
  
DO NOT put a toner cartridge into a fire. It 
could explode, resulting in injuries.
  
Handle the toner cartridges 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...

104
fClean the corona wire inside the drum 
unit by gently sliding the green tab from 
left to right and right to left several times.
 
CAUTION 
Be sure to return the tab to the home 
position (b) (1). If you do not, printed pages 
may have a vertical stripe.
 
gClose the corona wire cover. 
hRepeat e to g to clean each of the 
remaining corona wires. There are four 
corona wires in total.
iHolding the toner cartridges by their 
coloured handles, insert them one by 
one back into the drum units as shown....

Troubleshooting and routine maintenance
105
C
jPush the drum unit in until it stops. 
kClose the front cover of the machine. 
lPlug the machine’s power cord back into 
the AC electrical socket first,
and reconnect all cables.
Turn on the machine’s power switch.
Cleaning the drum unitC
If you have print quality problems caused by 
repeating marks on the pages, clean the 
drum unit as follows.
aPress the front cover release button and 
then open the front cover.
 
bClose the front cover of the machine....

106
cPull out the MP tray (1) and unfold the 
MP tray support flap (2).
 
dPut a blank sheet of A4 or Letter sized 
paper in the MP tray.
 
eWhile pressing and holding down 
Clear/Back pressd until 
DRUM CLEANING is displayed on the 
LCD.
 
fPress Mono Start or Colour Start. The 
paper will feed into the machine to start 
the drum cleaning. 
gThe following message appears on the 
LCD when the machine has finished 
cleaning. 
 
DRUM CLEANING
COMPLETED
hPress Stop/Exit so that the machine 
returns to the...

Troubleshooting and routine maintenance
107
C
lHold the green handle of the drum unit. 
Lift the drum unit up and then pull it out 
until it stops.
 
CAUTION 
We recommend that you place the drum 
unit and toner cartridges on a clean, flat 
surface with a piece of disposable paper 
underneath them in case you accidentally 
spill or scatter toner.
 
 
 
 

108
mRelease the grey lock lever (1) that is on 
the left side of the machine. Lift the front 
of the drum unit and pull the drum unit 
completely out of the machine using the 
green handles on the drum unit.
 
CAUTION 
Make sure that you use the drum unit 
handles when carrying it. DO NOT hold the 
sides of the drum unit.
 
 
nHold the handle of the toner cartridge 
and pull it out of the drum unit. Repeat 
this for all of the toner cartridges.
 
CAUTION 
To prevent damage to the machine from 
static...

Troubleshooting and routine maintenance
109
C
 
To avoid print quality problems, DO NOT 
touch the shaded parts shown in the 
illustrations.
 
 
 
 
oWhile holding both hands, turn the drum 
unit upside down and place on a piece of 
disposable paper or cloth. Make sure 
that the drum unit gears (1) are on your 
left hand side.
 
pSee the print sample to identify the 
colour causing the problem. The colour 
of the spots or toner stain is the colour of 
the drum you should clean. For 
example, if the spots...

110
qTurn the drum unit gear on the drum that 
matches that mark (for example, for a 
cyan mark, turn the drum for cyan). You 
should see the mark eventually on the 
surface of the drum (1).
 
rWhen you have found the mark on the 
drum that matches the print sample, 
wipe the surface of the drum gently with 
a cotton swab until the dust or paper 
powder on the surface comes off.
 
CAUTION 
The drum is photosensitive so DO NOT 
touch it with your fingers.
  
DO NOT clean the surface of the 
photosensitive...

Troubleshooting and routine maintenance
111
C
tHolding the toner cartridges by their 
coloured handles, insert them one by 
one back into the drum unit as shown. 
Make sure that you match the toner 
cartridge colour to the same colour label 
on the drum unit, and make sure that 
you fold down the toner cartridge handle 
(A) once the toner cartridge is in place. 
Repeat this for all the toner cartridges.
 
1 C - Cyan
2 M - Magenta
3 Y - Yellow
4K - Black
uPut the drum unit back in the machine as...

112
Note
When you put the drum unit in the 
machine, match the green guides (1) of 
the drum unit handle to the green 
arrows (2) on both sides of the machine.
 
 
2Push the drum unit in until it stops. 
vClose the front cover of the machine. 
wPlug the machine’s power cord back into 
the AC electrical socket first,
and reconnect all cables.
Turn on the machine’s power switch.