Develop ineo 350 - Page 301

21. Image quality problem Field Service Ver. 1.0 Aug. 2005
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Troubleshooting
21.3.10 Printer System: Foggy background
A. Typical Faulty Images
B. Troubleshooting Procedure
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ABCD
ABCD
ABCD
ABCD
ABCD
Step Section Check Item Result Action
1 - Sunlight or any other extraneous light
enters the machine.
YES Protect the copier from
extraneous light.
2 Imaging Unit Photo Conductor is dirty. YES Change Photo Conductor
Unit.
3 Comb Electrode contact terminal is dirty
or deformed.
YES Clean.
Change Photo Conductor
Unit.
4 Grid voltage contact terminal is dirty or
deformed.
YES Clean.
Change Photo Conductor
Unit.
5 Charge Neutralizing Sheet contact ter-
minal is dirty or deformed.
YES Clean.
Change Photo Conductor
Unit.
6 Erase Lamp Erase Lamp is dirty. YES Clean.
7 Is there continuity across the Erase
Lamp?
NO Change Erase Lamp.
8 Tech. Rep. Mode
→ Image Den-
sity
Select Tech. Rep. Mode → [Tech. Rep.
Choice] → [Printer] → [Image Density].
The image problem can be corrected by
selecting an Image Density setting
toward the - end.
YES Make setting again.
9 Tech. Rep. Mode
→ Grid Voltage
Adjustment
Select Tech. Rep. Mode → [Tech. Rep.
Choice] → [Printer] → [Grid Voltage
Adjustment].
The image problem can be corrected by
selecting an VG Adjust setting toward
the - end.
YES Make setting again.
10 - The problem has been eliminated after
performing step 9.
NO Change Photo Conductor
Unit.
Change Developing Unit.
Change PH Unit.
Change High Voltage
Unit.
Change Mechanical Con-
trol Board.