Printer Monocolor: Blank Copy, Black Copy - Konica Minolta bizhub C250 Service Manual

18. Image quality problem
18.3.24

Printer Monocolor: blank copy, black copy

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Image Check
1
Imaging Unit
2
3
High Voltage Unit
4 (Image Transfer,
Neutralizing)
5
412
Blank copy
4036fs4038c0
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. 1.0 Jul. 2005
Black copy
4036fs4039c0
Result
YES Check PH Unit connector for
proper connection.
NO Check and correct drive transmit-
ting coupling.
Change IU.
NO Check, clean, or correct the con-
tact.
NO Reconnect.
NO Change High Voltage Unit
(Image Transfer, Neutralizing).
→ Change MFP Control Board
→ Change PH Unit.
Action