Read Sharp AL-840 (serv.man5) Service Manual online
d. Image process section
<1> OPC drum section
No.
Parts
Note
Name
Type
Function/operation
1
OPC drum
OPC
Forms latent electrostatic images.
2
OPC drum earth electrode
Connects the OPC drum aluminum layer and
the earth (high voltage PWB).
the earth (high voltage PWB).
3
Main charger electrode
Connects the main charger output (high
voltage PWB) and the main charger brush.
voltage PWB) and the main charger brush.
4
Discharge brush
Discharges (lower the potential of) the OPC
drum surface.
drum surface.
Japan only
5
Main charger brush
Charges the OPC drum.
6
Toner seal
Shield to prevent toner from leaking outside
the OPC drum unit.
the OPC drum unit.
1)
2)
5)
3)
6)
5)
4)
1)
5 – 7
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