Brother Laserprinter Color Hl 3450cn User Guide

CHAPTER 5 MAINTENANCE 
5-15 
4.  Take the Fuser Cleaner out of 
the Fusing Unit by holding the 
handle of the Fuser Cleaner as 
shown below. 
 
Fig. 5-8 
5.  Install the new Fuser Cleaner 
into the guide with the roller side 
facing you. 
 
Fig. 5-9 
6.  Lock the Fuser Cleaner with the Fuser Cleaner Lock Levers. 
7.  Close the Top Cover. 
8.  Press the Power button to turn the printer On. 
9.  Press any of the Menu buttons (+, –, Set or Back) to take the printer Off 
Line. 
10. Press + or – until “RESET...

CHAPTER 5 MAINTENANCE 5-16 
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 T
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 P
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After approximately every 18,000 A4 or letter size images have been 
printed at 5% coverage, you must change the Waste Toner Pack. 
 
Waste Toner Pack Full Message 
When the Waste Toner Pack is full, the following message appears on the \
LCD panel and the printer will stop printing. When you see this message,\
 
you must replace the Waste Toner Pack: 
 
 
 
 
! Wa rn in g 
Do not...

CHAPTER 5 MAINTENANCE 
5-17 
 
1.  Open the Front Cover. 
2.  Remove the Waste Toner Pack 
from the holder located at the 
lower right side of the printer. Be 
careful not to spill the toner. 
 
Fig. 5-10 
3.  Peel off the sealing sticker on the 
right side of the Waste Toner 
Pack. Seal the opening with the 
sealing sticker. See Fig. 5-11 for 
the correct placement of the 
sticker. When you dispose of the 
used Waste Toner Pack, place it 
in the plastic bag included with 
the replacement Waste Toner...

CHAPTER 5 MAINTENANCE 
5-18 
O O
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OPC Belt Cartridge Message 
When the OPC Belt Cartridge runs out, the following message appears on 
the LCD panel. When you see this message, you must replace the OPC 
Belt Cartridge: 
 
 
 
! Caution 
 Do not touch the surface of the OPC Belt Cartridge. If you touch it, it 
could degrade print quality. 
 Do not expose the OPC Belt Cartridge to light (more than 800...

CHAPTER 5 MAINTENANCE 
5-19 
Replacing the OPC Belt Cartridge 
1.  Press the Power button to turn the printer off. 
2.  Open the Front Cover, and then open the Top Cover. 
3.  Pull the green Belt Cartridge 
Lock Levers on both sides 
toward you to release the lock. 
 
Fig. 5-12 
4.  Remove the OPC Belt Cartridge 
from the printer. 
 
Fig. 5-13 
5.  Remove the Tension Release 
Pins from both sides of the new 
OPC Belt Cartridge. 
 
Fig. 5-14  

CHAPTER 5 MAINTENANCE 
5-20 
6.  Remove the protective sheet 
from the new OPC Belt 
Cartridge. Do not touch the 
green part of the OPC Belt 
Cartridge. 
 
Fig. 5-15 
7.  Insert the new Belt Cartridge into 
the printer guides with the flat 
side facing you. 
 
Fig. 5-16 
8.  Press the Belt Cartridge Lock Levers on both sides of the OPC Belt 
Cartridge to the rear to lock the cartridge into the printer. 
9.  Close the Front Cover and the Top Cover. 
10. Press the Power button to turn the printer On. 
11....

CHAPTER 5 MAINTENANCE 
5-21 
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Ozone Filter 
You will need to replace the Ozone Filter once a year to prevent ozone from 
coming out of the printer.  
! Caution 
You must replace the Ozone Filter once a year. If you do not, it might cause 
a noticeable smell of Ozone. 
Replacing the Ozone Filter 
1.  Slide and remove the Rear Side 
Cover. 
 
Fig. 5-17 
2.  Remove the Ozone Filter Case 
from the Rear Side Cover.   
 
Fig. 5-18 
3....

CHAPTER 5 MAINTENANCE 
5-22 
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Fusing Unit  
When the following message appears on the LCD panel, you must replace 
the Fusing Unit: 
 
 
 
! Wa r n i n g  
The Fusing Unit and the parts around it are HOT! Be sure to wait until 
the Fusing Unit has cooled down sufficiently before replacing the 
Fusing Unit. 
If you touch the HOT parts, you might get injured. 
 
! Wa r n i n g  
After replacing the Fusing Unit, wait for approximately 30...

CHAPTER 5 MAINTENANCE 
5-23 
Replacing the Fusing Unit 
1.  Press the Power button to turn off the printer. Unplug the printer. To avoid 
injury, wait until the printer has cooled down sufficiently before replacing 
the Fusing Unit. 
2.  Open the Top Cover. 
3.  Unscrew the two long screws as 
shown to release the Fusing unit 
from the printer. 
 
Fig. 5-19 
 
Note 
Please wait for 30 minutes after installing a new Fusing Unit to allow 
the oil to circulate completely through to the Heat Roller. If you...

CHAPTER 5 MAINTENANCE 
5-24 
 
! Caution 
When removing the Fusing Unit from the printer, be sure to keep the Fusing 
Unit flat, so oil will not spill. Damage can occur if oil is spilled inside the 
printer. 
 
 
5.  Remove the Oil Bottle and the Fuser Cleaner from the Fusing Unit. 
6.  Install the new Fusing Unit into 
the printer. Be sure to insert the 
Fusing Unit completely into the 
printer. 
 
Fig. 5-21 
7.  Secure the Fusing Unit with the 
two long screws. 
 
Fig. 5-22