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2-1-5
(2) Main charger unit
As the drum rotates in a “clean (neutral)” state, its photoconductive layer is given a uniform, positive (+) corona charge dis-
persed by the main charger wire. Due to high-voltage scorotron charging, the charging wire can get contaminated by oxi-
dization after a long run. Therefore, the charger wire must be cleaned at a specific interval. Cleaning the charging wire
prevents print quality problems such as black streaks.
Figure 2-1-8 Main charger unit
Figure 2-1-9 Drum unit and main charger unit block diagram
1
4
2
3
(1)
Main charger shield
(2)
Main charger wire
(3)
Main charger grid
(4)
Main charger wire cleaner
Main charger wire
Main charger shield
Main charger grid
Drum
High voltage
PWB
Main charger output
Zener
PWB
M
Y 112480 - 6
Service Manual
Содержание PG L2130
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