Drum Unit; Removing And Reinstalling The Drum Unit; Removing And Reinstalling The Drum 3 - Konica Minolta 7020 Service Manual

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DRUM UNIT

[1] Removing and Reinstalling the
Drum Unit
Caution: Be sure that the power cord has
Caution 1:
Caution 2:
a. Procedure
(1) Open the front door, loosen the set screw, and
gently pull the developing unit out toward you.
(2) Open the ADU door, and open the conveyance
unit.
(3) Loosen the set screw, and gently pull the drum unit
out toward you until it stops. Then tilt it slightly and
remove it.
2
<Handling the drum unit>
Do not touch the separation claw unit.
*
(4) Reinstall in the opposite sequence to removal.
been unplugged from the outlet.
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.
Conveyance unit
ADU door
Front door
Drum unit
[2] Removing and Reinstalling the
Drum
Caution 1: Take care to avoid scratching the
drum's light sensitive areas and the
cleaning blade. Do not touch these
areas with bare hands.
Caution 2: When removing or installing, never
allow the drum to bump against the
plate-metal part of the cleaning blade.
Caution 3: If you are going to place the drum in
storage, be sure to place a cover on
the drum (to cut off light to it) and store
it in a dark place.
Caution 4: Before installing the drum and cleaning
blade (regardless of whether new or
used), be sure to coat these with
setting powder. Apply the powder
around the entire drum, and on both
sides of the blade.
Caution 5: If you have coated setting powder onto
the drum: Before installing the drum
unit back into the main body, use an
alcohol-soaked cloth to remove stray
powder from the sensor surface on the
toner control sensor board. This is
necessary to ensure that accurate
toner density readings are obtained.
Caution 6: Be sure that the drum is oriented
correctly before installing it. The
convex end (bulging end) should be
facing the rear.
Caution 7: After installing a new drum, be sure to reset
the drum-related counters in the 36 mode.
Caution 8: When removing the drum unit, do not place
2
your hand on the separation claw unit.
3-E-1
DRUM UNIT