Ir System: Low Image Density, Rough Image - Konica Minolta bizhub C350 Service Manual

bizhub C350 Field Service Ver2.0 Sep. 2004
4.3.10

IR System: low image density, rough image

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Original
Original Glass
2
Shading sheet
3
4 Mirror, lens,
Exposure Lamp,
5
and reflectors
6
7
8
ABCDE
ABCDE
ABCDE
ABCDE
ABCDE
Check Item
Original sticks to Original Glass.
Original Glass is dirty.
Shading sheet is dirty.
Mirror is dirty.
Lens is dirty.
Exposure Lamp is dirty.
Reflectors are dirty.
The problem has been eliminated
through the checks of steps up to 7.
Image quality problem
4036fs4036c0
Result
YES Reposition original.
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 Clean Exposure Lamp.
→ Change Scanner Assy.
→ Change CCD Unit.
Action
4-65