Konica Minolta bizhub C353 Service Manual page 605

18. Image quality problem
(2) When the ADF is used
Step Section
1 Original
2 ADF reading section
ADF scanning guide
3
Shading sheet
4
Mirror, lens, expo-
sure lamp, and reflec-
5 tors
ADF → Original Stop
6 Position
(Service Mode)
Glass step sheet
7 for the original glass
moving unit
ADF read position
8
9
560
Check item
Original is damaged or dirty.
Glass is dirty.
ADF scanning guide is damaged
or dirty.
Shading sheet is dirty.
Mirror is dirty
Lens is dirty
Exposure lamp is dirty
Reflectors are dirty
The adjustment value for [Main
Scanning Direction] falls within
the specified range.
The glass step sheet is tilted.
The white lines/bands or colored
lines/bands occurs when reading
the original from ADF.
The white lines/bands or colored
lines/bands are blurry.
Field Service Ver. 4.0 Jun. 2008
Result Action
YES Change original.
YES Clean.
YES Clean.
YES Wipe the surface clean with
a soft cloth.
YES Clean.
YES Clean.
YES Clean.
YES Clean.
NO Readjust.
YES Readjust.
YES Readjust.
YES Change scanner assy.
Change CCD unit.