Brother DCP 9040CN User Manual

Troubleshooting and routine maintenance
99
C
The machine will stop printing when the following maintenance messages appear on the LCD.
1The toner cartridge color that is used up is shown in the message.
2Approx. yields based on 5% page coverage (Letter). The actual number of printed pages will vary depending on the 
print jobs and paper you use.
3When printing on Letter size paper at 5% print coverage for CMYK each. The actual number of printed pages will vary 
depending on the print jobs and paper you...

100
The following are maintenance messages that appear alternately with the normal message on the 
upper row of the LCD when the machine is in the Ready mode. These messages advise you that 
you will need to replace each of the consumable items as soon as possible, since the consumable 
item’s end of life has been reached. The machine will continue printing when any of these 
messages appear on the LCD.
1Drum yield is approximate, and may vary by type of use.
2When printing on Letter size paper.
3When...

Troubleshooting and routine maintenance
101
C
Replacing a toner cartridgeC
Order Numbers: 
Toner Cartridge Standard: 
TN-110 (BK, C, M, Y)
Toner Cartridge High Yield: 
TN-115 (BK, C, M, Y)
The High Yield toner cartridges can print 
approximately 5,000 pages (Black) and 
approximately 4,000 pages each (Cyan, 
Magenta and Yellow). The Standard toner 
cartridges can print approximately 2,500 
pages (Black) and approximately 1,500 
pages each (Cyan, Magenta and Yellow). 
Actual page count will vary depending...

102
aPress the front cover release button and 
then open the front cover.
 
bHold the green handle of the drum unit. 
Lift the drum unit up and then pull it out 
until it stops.
 
cHold the handle of the toner cartridge 
and pull it out of the drum unit. Repeat 
this for all the toner cartridges.
 
 

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
CAUTION 
DO NOT use flammable substances near 
the machine. DO NOT use any type of 
spray to clean the inside or outside of the 
machine. Doing this may cause a fire or 
electrical shock. Refer to Routine 
maintenance on page 81 for how to clean 
the machine.
 
dClean the corona wires as follows.
1Push to release the latches of the 
white corona wire cover (1), and 
then open the cover.
 
2Clean the corona wire inside the 
drum unit by gently sliding the 
green tab from left to right and right 
to...

Troubleshooting and routine maintenance
105
C
fRemove the orange protective cover.
 
gHold the handle of the toner cartridge 
and slide the toner cartridge into the 
drum unit. Make sure that you match the 
toner cartridge color to the same color 
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
hPush the drum unit in until it stops....

106
Replacing the drum unitC
Order Number: DR-110CL
Drum end soon messageC
 
Drum End Soon
The machine uses a drum unit to create print 
images on paper. If the LCD shows 
Drum End Soon, the drum unit is near the 
end of its life and it is time to buy a new one.
Even if the LCD shows Drum End Soon, 
you may be able to continue printing without 
having to replace the drum unit for a while. 
However, if there is a noticeable deterioration 
in the output print quality (even before 
Drum End Soon appears),...

Troubleshooting and routine maintenance
107
C
aTurn off the machine’s power switch. 
Press the front cover release button and 
then open the front cover. 
 
bHold the green handle of the drum unit. 
Lift the drum unit up and then pull it out 
until it stops.
 
 

108
cRelease the gray 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 
We recommend that you place the drum 
unit on a clean, flat surface with a piece of 
disposable paper underneath it in case you 
accidentally spill or scatter toner.
 
 
Note
Discard the used drum unit according to 
local regulations, keeping it separate from 
domestic waste. Be sure to...