Scanner System: Blank Copy, Black Copy - Konica Minolta bizhub C450 Service Manual

18. Image quality problem
18.3.12

Scanner System: blank copy, black copy

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Cable connecting
1 Scanner and
printer
Image Processing
2 Board (PWB-C)
CCD Unit
3
Test Mode
4 (Service Mode)
Image Processing
5 Board (PWB-C)
390
Blank copy
4036fs4038c0
Check Item
Connector is connected properly
with no pins bent.
Connectors on the Image Pro-
cessing Board are connected
properly.
Connectors of the CCD Unit are
connected properly.
The problem is eliminated as
checked with the image on a test
pattern produced.
The problem is eliminated after
the I/F connection cable has been
changed.
Field Service Ver. 1.0 Mar. 2005
Black copy
4036fs4039c0
Result
NO Reconnect.
NO Reconnect.
NO Reconnect.
NO Change I/F connection cable.
NO Change Image Processing
Board.
Action