OKI C3400N User Manual

C3400n User’s Guide
81
      toner in positon_lock_Fig1_15.jpg  
12.Finally, close the top cover and press down firmly so that the 
cover latches closed.
     cover close_F5_22.jpg  
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C3400n User’s Guide
82
Image drum replacement
    
Switch off the printer and allow the fuser to cool for about 
10 minutes before opening the cover.
        
The printer contains four image drums: cyan, magenta, yellow 
and black.
1.Press the cover release and open the printer’s top cover fully.
    cover open button_F5_23.jpg 
2.Note the positions of the 4 cartridges.
WARNING!
If the printer has been powered on, the fuser will be hot. 
This area is clearly labelled. Do not touch.
CAUTION!
Static...

C3400n User’s Guide
83
      ID Positions_Fig1_04.jpg  
     
3.Holding it by its top center, lift the image drum, complete with its 
toner cartridge (1), up and out of the printer.
        ID going out_Fig1_12.jpg  
4.Put the old unit down gently onto a piece of paper to prevent 
toner from marking your furniture.
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.
1. Cyan...

C3400n User’s Guide
84
   
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.
       Toner_remove paper _Fig1_24.jpg  
7.Holding the complete assembly by its top center, 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.
CAUTION!
The green image drum surface at the base of the cartridge 
is very delicate and...

C3400n User’s Guide
85
       ID_going in_Fig1_14.jpg  
8.Finally, close the top cover and press down firmly at both sides so 
that the cover latches closed.
       
NOTE
I f  y o u  n e e d  t o  r e t u r n  o r  t r a n s port 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 spillage.
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C3400n User’s Guide
86
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.
   cover open button_F5_23.jpg 
2.Identify the fuser handle (1) on the top of the fuser unit.
WARNING!
If the printer has recently been powered on, some fuser 
components will be very hot. Handle the fuser with 
extreme...

C3400n User’s Guide
87
     fuser_out_F5_10.jpg  
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 that it is the 
correct way round. The...

C3400n User’s Guide
88
     fuser going in_F8_12.jpg  
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.
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C3400n User’s Guide
89
Replacing the belt unit
The belt unit is located under the four image drums. This unit 
requires replacement approximately every 50,000 pages.
      
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.
     cover open button_F5_23.jpg  
2.Note the positions of the 4 cartridges. It is essential that they go 
back in the same order.
     ID Positions_Fig1_04.jpg...

C3400n User’s Guide
90 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).
      
   IDs _ all out_cover_F8_19.jpg  
4.Locate the two fasteners (1) at each side of the belt (3) and the 
lifting bar (2) at the front end.
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...