Replacing The Cleaning Blade - Konica Minolta bizhub PRO 920 Service Manual

Field Service Ver2.0 Aug.2005
3.12.2

Replacing the cleaning blade

Note
• Be absolutely sure to replace the cleaning blade and the toner guide brush at the same time.
• When replacing the cleaning blades, be sure to replace the cleaning blade /1 and the cleaning
blade /2 at the same time.
• Be sure to avoid touching the edge of the cleaning blade with bare hands.
• When reinstalling the cleaning section, be sure to apply setting powder to the entire periphery of
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 conduct the following operations before
installing the photo conductor section to the main body:
1) To obtain an accurate toner density, clean setting powder splashed onto the PGC sensor
(PGCS) and the IDC sensor (IDCS) on the toner control sensor board (TCSB) with a cleaning
pad soaked in drum cleaner.
2) With the charge unit and the developing unit removed, rotate the drum one full turn (for splash
prevention of setting powder to the charge and prevention against the image getting blurred).
A. Periodically replaced parts/cycle
• Cleaning blade: Every 500,000 prints
B. Procedure
[1]
[2]
1.
Pull out the photo conductor section from the
main body. (See "3.7.1 Removing/reinstalling the
photo conductor section.")
2.
Remove the cleaning section from the photo con-
ductor section. (See "3.12 Maintenance proce-
dure of the cleaning and toner recycle section.")
3.
Remove the screw [1] and then remove the clean-
ing blade /2 [2].
Note
• When installing the cleaning blade, be sure to
push lightly both the ends of the cleaning
blade alternately to check to see if there
remain play.
4.
Reinstall a new cleaning blade /2.
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3. PERIODIC CHECK
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