Replacing The Drum - Konica Minolta bizhub PRO 920 Service Manual

3. PERIODIC CHECK
3.7.5

Replacing the drum

Note
• Be careful not to touch or damage the drum and the cleaning blade with bare hands.
• When storing the drum, be sure to store it in dark place with the drum cover attached.
• When reinstalling the drum, the cleaning blade and the toner guide brush, be sure to apply setting
powder all around the drum and the cleaning blade regardless of these parts being new or used
ones.
• When the drum is applied with setting powder, be sure to conduct the following operations before
installing the photo conductor section to the main body:
1) With the charge and the developing unit removed, rotate the drum one full turn (to prevent
splashing of setting powder to the charge unit and prevent the image from getting blurred).
2) When installing a new drum, be sure to reset the photo conductor counter in the Tech. Rep.
mode. Failing to reset it may results in image fogging and/or toner splash. (See "10.5.1 PM
count.")
A. Periodically replaced parts/cycle
• Drum: 1,000,000 prints or 250 hours drive, whichever is earlier
B. Procedure
44
[1]
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Field Service Ver2.0 Aug.2005
1.
Pull out the photo conductor section from the
main body. (See "3.7.1 Removing/reinstalling the
photo conductor section.")
2.
Remove the charge unit from the photo conductor
section. (See "3.8.1 Replacing the charge unit.")
3.
Remove the sensor support stay assembly from
the photo conductor section. (See "3.7.3 Replac-
ing the drum temperature sensor (TH5).")
4.
Remove the developing unit and developing suc-
tion assembly from the photo conductor section.
(See "3.10.2 Replacing the developing unit and
the developing suction assembly.")
5.
Remove the cleaning unit from the photo conduc-
tor section. (See "3.12.1 Cleaning the cleaning/
toner recycle section.")
6.
Be careful not damage the photo conductor sur-
face. And hold the drum [1] at both ends and lift it
up for removal.
7.
Reinstall the above parts following the removal
steps in reverse.