Printer Monocolor: Blank Copy, Black Copy - Konica Minolta bizhub C353 Service Manual

18. Image quality problem
18.3.25

Printer monocolor: blank copy, black copy

A. Typical faulty images
B. Troubleshooting procedure
Step Section
Image check
1
Imaging unit
2
3
4 High voltage unit
5
586
Blank copy
Check item
A blank copy occurs.
Coupling of IU drive mechanism
is installed properly.
The PC drum charge corona
voltage contact or PC drum
ground contact of the imaging unit
is connected properly.
Connector is connected properly.
The problem has been eliminated
through the check of step 4.
Field Service Ver. 3.0 Jan. 2008
Black copy
Result Action
YES Check PH unit connector for
proper connection.
NO Check and correct drive
transmitting coupling.
Change IU.
NO Check, clean, or correct the con-
tact.
NO Reconnect.
NO Change high voltage unit.
→ Change printer control board
→ Change PH unit.
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