OKI MC860dn User Manual

Maintenance > 121
image drum cartridge. Place the cartridge on a piece of paper to avoid marking your 
furniture.
9. Take the new image drum cartridge out of its packaging and place it on the piece of 
paper where the old cartridge was placed. Keep it the same way round as the old 
unit. Pack the old cartridge inside  the packaging material for disposal.
10. Place the toner cartridge onto the new image drum cartridge as shown. Push the left 
end in first, and then lower the right end  in. (It is not...

Maintenance > 122
14.Gently lower the scanner.
Transfer Belt Replacement
The belt unit is located under the four im age drums. This unit requires replacement 
approximately every 80,000 pages.
1. Switch off the MFP and allow the fuser to  cool for about 10 minutes before opening 
the cover.
2. Pull the lever (a) firmly to release the lo ck and then gently raise the scanner (b).
NOTE
If you need to return or transport this product for any reason, please make 
sure you remove the image drum unit...

Maintenance > 123
3.Press the cover release (a) and open the top cover (b) fully.
4. Note the positions of the four cartridges. It  is essential that they go back in the same 
order.
WARNING!
If the MFP has been powered on, the  fuser will be hot. This area is 
clearly labelled. Do not touch.
1. Cyan cartridge 3. Yellow cartridge
2. Magenta cartridge 4. Black cartridge
b
a
1 
2 
3 
4 
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Maintenance > 124
5.Lift each of the image drum units out of the MFP and place them in a safe place away 
from direct sources of heat and light.
6. Locate the two fasteners (1) at each side  of the belt and the lifting bar (b) at the 
front end.
7. Turn the two fasteners 90° to the left.  This will release the belt from the MFP 
chassis.
8. Pull the lifting bar (2) upwards so that belt tilts up towards the front, and withdraw 
the belt unit from the MFP.
CAUTION!
The green image drum surface at the base...

Maintenance > 125
9.Lower the new belt unit into place, with th e lifting bar (2) at the front and the drive 
gear towards the rear of the MFP. 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 MFP.
10. Turn the two fasteners (1) 90° to the right un til they lock. This will secure the belt 
unit in place.
11. Replace the four image drums, complete with  their toner cartridges, into the printer 
in the same sequence  as...

Maintenance > 126
Fuser Replacement
The fuser is located inside the MFP just behind the four image drum units.
1. Switch off the MFP and allow the fuser to  cool for about 10 minutes before opening 
the cover.
2. Pull the lever (a) firmly to release the lo ck and then gently raise the scanner (b).
3. Press the cover release (a) and open the top cover (b) fully.
WARNING!
If the MFP has recently been po wered on, some fuser components 
will be very hot. Handle the fuser  with extreme care, holding it only...

Maintenance > 127
4.Identify the fuser handle (1)  on the top of the fuser unit.
5. Pull the fuser retaining lever (2) towards th e front of the MFP so that it is fully 
upright.
6. Holding the fuser by its handle (1), lift the fuser straight up and out of the MFP. If 
the fuser is still warm, place it on a flat  surface which will not be damaged by heat.
7. Remove the new fuser from its packaging and remove the transit material.
8. Holding the new fuser by its handle, make su re that it is the correct...

Maintenance > 128
10.Push the retaining lever (2) towards the rear of the MFP to lock the fuser in place.
11. Close the top cover and press down firm ly so that the cover latches closed.
12. Gently lower the scanner.
2
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Maintenance > 129
Cleaning
...the Unit Casing
1.Switch off the MFP.
2. Wipe the unit surface with a soft cloth  moistened sparingly with water or neutral 
detergent.
3. Use a soft dry cloth to dry the unit surface.
4. Tu r n  o n  t h e  M F P.
...the ADF
From time to time the pad assembly and feed  rollers may become contaminated with ink, 
toner particles or paper dust. In this ca se the scan module may not feed documents 
smoothly. If this occurs, follo w the cleaning procedure below.
1. Carefully...

Maintenance > 130
2.Moisten a soft, clean, lint-free cloth and wipe  the feed rollers (3) by moving the cloth 
from side to side.
3. Rotate the rollers forward with your fing er and repeat step 2 until the rollers are 
clean.
4. Carefully lift inner cover (4).
5. Wipe rollers (5 & 6) by moving the cloth from side to side.
6. Rotate the rollers forward with your fing er and repeat step 5 until the rollers are 
clean.
7. Close the ADF front cover.
NOTE
Turn gear wheel (7) to rotate rollers (6).
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4
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