Brother MFC 9450CDN User Manual

Troubleshooting and routine maintenance
171
C
jPress Menu, 8, 4.
Only the parts counters that need to be 
reset appear in the menu.
 
Machine Info.
4.Reset Menu
kPress a or b to choose Drum.
Press OK.
lPress 1 to reset the drum unit counter.
mPress Stop/Exit.
Replacing the belt unitC
Order Number: BU-100CL
Change Belt Unit messageC
When the belt unit runs out, the following 
message appears on the LCD. When you see 
this message, you must replace the belt unit:
 
Change Belt Unit
CAUTION 
DO NOT touch...

172
bHold the green handle of the drum unit. 
Lift the drum unit up and then pull it out 
until it stops.
 
cRelease 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.
 
1
 

Troubleshooting and routine maintenance
173
C
CAUTION 
Make sure that you use the drum unit 
handles when carrying it.  DO NOT hold the 
sides of the drum unit.
 
 
 
We recommend that you place the drum 
unit on a flat surface protected by a piece of 
disposable paper or cloth in case of toner 
scatter or spillage.
  
To prevent damage to the machine from 
static electricity, DO NOT touch the 
electrodes shown in the illustration.
 
 
dHold the green parts of the belt unit with 
both hands and lift the...

174
eUnpack the new belt unit, and remove 
the protective cover and paper.
 
fPut the new belt unit in the machine. 
Match the h mark on the belt unit to the 
g mark on the machine. Push down on 
the green area of the belt unit to lock it in 
place.
 
gPut the drum unit back in the machine as 
follows.
1Make sure that the grey lock 
lever (1) is in the up position and 
put the drum unit in the machine. 
Push down the grey lock lever (1).
1
1
 

Troubleshooting and routine maintenance
175
C
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. 
hClose the front cover of the machine. 
When you replace the belt unit with a 
new one, you need to reset the belt unit 
counter by completing the following 
steps:
iTurn on the machine’s power switch.
2
1
2
1
 

176
jPress Menu, 8, 4.
Only the parts counters that need to be 
reset appear in the menu.
 
Machine Info.
4.Reset Menu
kPress  a or  b to choose  Belt Unit .
Press  OK.
lPress  1 to reset the belt unit counter.
mPress  Stop/Exit .
Replacing the waste toner boxC
Order Number: WT-100CL
Change waste toner soon messageC
After you have printed approximately 20,000 
images at 5% coverage for CMYK each, you 
must change the waste toner box. The actual 
number of printed pages will vary depending 
on the print...

Troubleshooting and routine maintenance
177
C
bHold the green handle of the drum unit. 
Lift the drum unit up and then pull it out 
until it stops.
 
cRelease 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.
 
1
 

178
CAUTION 
Make sure that you use the drum unit 
handles when carrying it.  DO NOT hold the 
sides of the drum unit.
 
 
 
We recommend that you place the drum 
unit on a flat surface protected by a piece of 
disposable paper or cloth in case of toner 
scatter or spillage.
  
If toner scatters on your hands or clothes, 
wipe or wash it off with cold water at once.
  
To prevent damage to the machine from 
static electricity, DO NOT touch the 
electrodes shown in the illustration.
 
 
dHold the green...

Troubleshooting and routine maintenance
179
C
eRemove the waste toner box from the 
machine using the green handle.
 
Note
Discard the used waste toner box 
according to local regulations, keeping it 
separate from domestic waste. If you have 
questions, call your local waste disposal 
office.
 
fUnpack the new waste toner box and 
put the new one in the machine using 
the green handle.
 
gPut the belt unit back in the machine. 
Match the h mark on the belt unit to the 
g mark on the machine. Push down...

180
hPut the drum unit back in the machine as 
follows.
1Make sure that the grey lock 
lever (1) is in the up position and 
put the drum unit in the machine. 
Push down the grey lock lever (1).
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.
 
   
1
1
2
1
2
1