21.3 Solution; Scanner System: Blank Copy Or Black Copy - Konica Minolta bizhub 250 Service Manual

Field Service Ver. 1.0 Aug. 2005

21.3 Solution

21.3.1

Scanner System: Blank copy or black copy

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 PWBs and Con-
nection Cables
2 Exposure Unit
3 Inverter Board
4
5 BCRS Board
6
7 MFBS Board
8
9 CCD Unit
10
EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
Blank copy
4036fs4038c0
Check Item
Connectors are securely connected with
no bent pins and no breaks in the con-
nection cables.
The Exposure Lamp comes on.
Connectors on the Inverter Board are
connected properly.
The problem has been eliminated after
performing step 3.
Connectors on the BCRS Board are
connected properly.
The problem has been eliminated after
performing step 5.
Connectors on the MFBS Board are
connected properly.
The problem has been eliminated after
performing step 7.
Connectors on the CCD Unit Board are
connected properly.
The problem has been eliminated after
performing step 9.
21. Image quality problem
Black copy
4036fs4039c0
Result
NO Reconnect.
Replace the connection
cable.
NO Change Exposure Lamp.
Change Exposure Unit.
NO Reconnect.
NO Change Inverter Board.
NO Reconnect.
NO Change BCRS Board.
NO Reconnect.
NO Change MFBS Board.
NO Reconnect.
NO Change CCD Unit.
Action
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