Scanner System: White Lines In Main Scan Direction, White Bands In Main - Konica Minolta bizhub C250 Service Manual

18. Image quality problem
18.3.2

Scanner System: white lines in Main Scan Direction, white bands in Main

Scan Direction, colored lines in Main Scan Direction, and colored bands in
Main Scan Direction
A. Typical Faulty Images
White lines in Main
Scan Direction
4036fs4025c0
B. Troubleshooting Procedure
Step Section
1 Original
2 Original Cover
Original Glass
3
Machine → Scan Area
→ Image Position: Top
4
Edge (Service Mode)
5
478
White bands in
Main Scan Direction
4036fs4026c0
Check Item
Original is damaged or dirty.
Original Pad is dirty.
Original Glass is dirty.
The adjustment value for [Image
Position: Leading Edge] falls within
the specified range.
The problem has been eliminated
through the checks of steps up to 4.
Field Service Ver. 3.0 Aug. 2006
Color lines in Main Color bands in Main
Scan Direction
4036fs4027c0
Result
YES Change original.
YES Clean.
YES Wipe the surface clean
with a soft cloth.
NO Readjust.
NO Change Scanner Assy.
Change CCD Unit.
Scan Direction
4036fs4028c0
Action