Drum Unit; Removing And Reinstalling The Drum Unit - Konica Minolta 7145 Service Manual

5. DRUM UNIT

5.1 Removing and Reinstalling
the Drum Unit
A. Periodically replaced parts/cycle
• Drum unit: Every 720,000 copies (7145)
• Drum unit: Every 600,000 copies (7235/7228/
7222)
B. Procedure
1. Remove the developing unit.
2. Open the ADU door [1], and open the convey-
ance unit [2].
3. Loosen the screw [3], and gently pull the drum
unit [4] out toward you until it stops. Then tilt it
slightly and remove it.
Note:
• When removing the drum unit, be sure to hold it
at both ends to prevent a possible deformation of
the drum unit.
• After removing the drum unit, close the drum
cover and store the unit in a dark place.
• During removal and reinstallation work, never
rotate the drum in the wrong direction (in the
direction opposite to the direction it moves during
normal copying). Rotating the drum in the reverse
direction may cause scratches to the cleaning
blade.
• When removing the drum unit, do not place your
hand on the separation claw unit [5].
4. Reinstall the above parts following the removal
steps in reverse.
3-27
DRUM UNIT
[2]
[1]
[3]
[4]
[5]
2