Ir System: Fog - Konica Minolta Bizhub C350 Service Manual

bizhub C350 Field Service Ver. 2.0 April 2004
4.3.4

IR System: fog

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Original Original is damaged or dirty.
2 Original Cover Original Pad is dirty.
Original Cover does not lie flat.
3
Original Glass Original Glass is dirty.
4
Shading sheet Shading sheet is dirty.
5
6 Mirror, lens, Mirror is dirty.
Exposure Lamp,
7 Lens is dirty.
and reflectors
8 Exposure Lamp is dirty.
9 Reflectors are dirty.
Photo/Density The problem is eliminated when the
10 image is produced in the Manual
exposure setting.
The problem has been eliminated
11
through the checks of steps up to 10.
ABCD
ABCD
ABCD
ABCD
ABCD
4036fs4030c0
Check Item Result
4-59
Image quality problem
Action
YES Change original.
YES Clean.
YES Change Original Cover if it is
deformed or hinges are broken.
YES Wipe the surface clean with a
soft cloth.
YES Wipe the surface clean with a
soft cloth.
YES Clean.
YES Clean.
YES Clean.
YES Clean.
NO Try another exposure level in
Manual.
NO Change Scanner Assy.
Change CCD Unit.