Scanner System: White Lines, White Bands, Colored Lines And Colored Bands In Main Scan Direction - Olivetti d-Color MF651 Service Manual

22. IMAGE QUALITY PROBLEM
22.3.2 Scanner system: white lines, white bands, colored lines and colored bands
in main scan direction
A. Typical faulty images
White lines
B. Troubleshooting procedure
Step Section
1 Original
2 ADF
3 Original glass
4 Machine Scan
Area Image
Position: Top
Edge
(Service Mode)
5
864
White bands
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.
Service Manual
Field Service Ver. 2.0 Jul. 2009
Color lines Color bands
Result Action
YES Change original.
YES Clean.
YES Wipe the surface clean with a
soft cloth.
NO Readjust.
NO Change exposure unit.
Change CCD unit.
A02EF4C508DA
Y110571-1