OKI C3450n User Manual

Replacing consumable items > 91
5.Take the new image drum unit, complete with toner 
cartridge (assembled according to the installation guide) 
and place it on the piece of paper where the old ID unit 
was placed. 
6.Remove the protective sheets from the image drum unit. 
Keep it the same way round as the old unit. Pack the old 
ID unit inside the packaging material for disposal.
CAUTION!
The green image drum surface at the base of the 
cartridge is very delicate and light sensitive. Do not 
touch it and...

Replacing consumable items > 92
7.Holding the complete assembly by its top centre, lower it 
into place in the printer, locating the pegs at each end (1) 
into their slots (2) in the sides of the printer cavity.
8.Finally, close the top cover and press down firmly at both 
sides so that the cover latches closed.
1 
2 
NOTE
If you need to return or transport your printer for any reason, 
please make sure you remove the image drum unit 
beforehand and place in the bag provided. This is to avoid 
toner...

Replacing consumable items > 93
REPLACING THE BELT UNIT
The belt unit is located under the four image drums. This unit 
requires replacement approximately every 50,000 pages.
1.Press the cover release and open the printer’s top cover 
fully.
2.Note the positions of the 4 cartridges. It is essential that 
they go back in the same order 
WARNING!
If the printer has been powered on, the fuser will be 
hot. This area is clearly labelled. Do not touch.
1
2
3
4
1. Cyan cartridge 2. Magenta cartridge
3. Yellow...

Replacing consumable items > 94
3.Lift each of the image drum units (1), starting from the 
rear, out of the printer and place them in a safe place 
away from direct sources of heat and light (2).
2 
1 
CAUTION!
The green image drum surface at the base of each 
cartridge is very delicate and light sensitive. Do not 
touch it and do not expose it to normal room light for 
more than 5 minutes. If the drum unit needs to be out 
of the printer for longer than this, please wrap the 
cartridge inside a black...

Replacing consumable items > 95
4.Locate the two fasteners (1) at each side of the belt (3) 
and the lifting bar (2) at the front end.
5.Turn the two fasteners (1) 90° to the left. This will release 
the belt from the printer chassis.
6.Pull the lifting bar (2) upwards so that belt tilts up towards 
the front, and withdraw the belt unit from the printer.
1
1 2 3 
Downloaded From ManualsPrinter.com Manuals 

Replacing consumable items > 96
7.Lower the new belt unit into place, with the lifting bar at 
the front and the drive gear towards the rear of the 
printer. Locate the drive gear into the gear inside the 
printer by the rear left corner of the unit, and lower the 
belt unit flat inside the printer.
8.Turn the two fasteners (1) 90° to the right until they lock. 
This will secure the belt unit in place.
1 
2 
 
Downloaded From ManualsPrinter.com Manuals 

Replacing consumable items > 97
9.Replace the 4 image drums, complete with their toner 
cartridges, into the printer in the correct positions as 
shown.
10.Finally, close the top cover and press down firmly at both 
sides so that the cover latches closed.
1
2
3
4
1. Cyan cartridge 2. Magenta cartridge
3. Yellow cartridge 4. Black cartridge
Downloaded From ManualsPrinter.com Manuals 

Replacing consumable items > 98
FUSER REPLACEMENT
The fuser is located inside the printer just behind the four image 
drum units.
Switch off the printer and allow the fuser to cool for about 
10 minutes before opening the cover.
1.Press the cover release and open the printer’s top cover 
fully.
WARNING!
If the printer has recently been powered on, some 
fuser components will be very hot. Handle the fuser 
with extreme care, holding it only by its handle, which 
will only be mildly warm to the touch. A...

Replacing consumable items > 99
2.Identify the fuser handle (1) on the top of the fuser unit.
3.Pull the two fuser retaining levers (2) towards the front of 
the printer so that they are fully upright.
4.Holding the fuser by its handle (1), lift the fuser straight 
up and out of the printer. If the fuser is still warm, place it 
on a flat surface which will not be damaged by heat.
5.Remove the new fuser from its packaging and remove the 
transit material.
6.Holding the new fuser by its handle, make sure...

Replacing consumable items > 100
7.Holding the fuser handle (2), lower the fuser into the 
printer, locating the two lugs  into their slots in the metal 
partition which separates the fuser area from the image 
drums.
8.Push the two retaining levers (1) towards the rear of the 
printer to lock the fuser in place.
9.Finally, close the top cover and press down firmly at both 
sides so that the cover latches closed.
1 
2 
Downloaded From ManualsPrinter.com Manuals