Streaks On Image; Text Invisible - Canon imageFORMULA DR-X10C Service Manual

CHAPTER 5 TROUBLESHOOTING

5. Streaks on Image

If the reading glass surface is dirty, streaks appear on the scanned images in the feed direction.
Dirt on the rollers may also be transferred to the documents.
On the other hand, white streaks appearing on the scanned images are caused by the
execution of the shading correction while the reading unit inside is dirty.
Cause/faulty
location
Reading glasses
Roller
Feed unit
Reading unit inside

6. Text Invisible

When the background includes colors or patterns, text may be hidden by the background
when scanning in black and white mode. A special mode called "Advanced Text Enhancement"
exists to solve this problem.
Note: The problem may not be fixed, depending on the type of document.
Cause/faulty
location
"Mode" setting
"Brightness" setting
5-36
Step Check item
1 Are the reading glasses
clean?
2 Are the surfaces clean?
3 Is the feed path clean?
4 Is the reading unit inside
clean?
Table 5-606
Step Check item
1 Is the problem solved when
the "Color" or "Grayscale"
setting is changed?
2 Is the problem solved when
the setting of a special mode
such as the "Advanced Text
Enhancement" is changed?
3 Is the problem solved when
the "Brightness" setting is
changed?
Table 5-607
COPYRIGHT © CANON ELECTRONICS INC. 2008
Result Action
NO Clean the reading
glasses.
Replace the reading
sensor cover if
scratches are found.
NO Clean or replace the
roller.
NO Clean the feed path.
NO Clean or replace the
reading sensor cover or
CIS unit.
Result Action
YES End.
YES End.
YES End.
CANON DR-X10C FIRST EDITION