Develop ineo 350 - Page 299

21. Image quality problem Field Service Ver. 1.0 Aug. 2005
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bizhub 200/250/350
Troubleshooting
21.3.8 Printer System: Blank copy or black copy
A. Typical Faulty Images
B. Troubleshooting Procedure
Blank copy Black copy
4036fs4038c0 4036fs4039c0
Step Section Check Item Result Action
1 Imaging Unit Developing Unit drive is being transmit-
ted.
NO Correct or change drive
coupling mechanism.
2 Image transfer current contact terminal
is dirty or deformed.
YES Clean.
Change Photo Conductor
Unit.
3 Developing bias contact terminal is dirty
or deformed.
YES Clean.
Change Photo Conductor
Unit.
4 PH Unit PH Shutter (shutter in the path of the
laser beam from the PH Unit to the
Photo Conductor) opens and closes
properly.
NO Correct.
5 PWBs Connectors are securely connected with
no bent pins on the Mechanical Control
Board or PH Unit.
NO Correct.
6 - The problem has been eliminated after
performing step 5.
NO Change Photo Conductor
Unit.
Change PH Unit.
Change High Voltage
Unit.
Change Mechanical Con-
trol Board.