Printer Monocolor: Blank Print, Black Print - Konica Minolta bizhub C250P Service Manual

25. Image quality problem
25.3.11

Printer Monocolor: blank print, black print

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Image Check
1
Imaging Unit
2
3
High Voltage Unit
4 (Image Transfer, Neu-
tralizing)
5
358
Blank print
4036fs4038c0
Check Item
A blank print occurs.
Coupling of IU drive mechanism is
installed properly.
The PC Drum Charge Corona volt-
age contact or PC Drum ground
contact of the Imaging Unit is con-
nected properly.
Connector is connected properly.
The problem has been eliminated
through the check of step 4.
Field Service Ver. 2.0 Mar. 2006
Black print
4036fs4039c0
Result
YES Check PH Unit connector
for proper connection.
NO Check and correct drive
transmitting coupling.
Change IU.
NO Check, clean, or correct
the contact.
NO Reconnect.
NO Change High Voltage Unit
(Image Transfer, Neutral-
izing).
→ Change MFP Control
Board
→ Change PH Unit.
Action