Olivetti d-color MF651, Service Manual, Page: 924 / 1053

22. IMAGE QUALITY PROBLEM Field Service Ver. 2.0 Jul. 2009
864
TROUBLESHOOTING
22.3.2 Scanner system: white lines, white bands, colored lines and colored bands
in main scan direction
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C508DA
White lines White bands Color bands Color lines
Step Section Check item Result Action
1 Original Original is damaged or dirty. YES Change original.
2 ADF Original pad is dirty. YES Clean.
3 Original glass Original glass is dirty. YES Wipe the surface clean with a
soft cloth.
4 Machine
o
Scan
Area
o
Image
Position: Top
Edge
(Service Mode)
The adjustment value for [Image
Position: Leading Edge] falls within
the specified range. NO Readjust.
5 The problem has been eliminated
through the checks of steps up to 4. NO Change exposure unit.
Change CCD unit.
Service Manual Y110571-1