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PREVENTIVE MAINTENANCE (PM)
5 - 25
* H1: Developer unit, H4: Front shield (unified with the doctor blade)
1. Cleaning
Clean the doctor blade so as to prevent developer material from adhering to it when the
drum is being replaced.
Space the front shield from the developer sleeve and then insert a doctor blade
cleaning jig into the doctor sleeve gap. Then clean the doctor blade by running the jig
for 3 times to and from along with the edge of the blade.
Fig. 5-20
2. Removal of foreign matter in the developer unit
(1) Take off the process unit (EPU).
(2) Space the front shield.
(3) Insert the cleaning jig all the way in the developer unit at a position approx. 30 mm
away from the white streak.
Fig. 5-21
1
2
30mm
1
2
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