Streaks In Image; Image Slanted - Canon imageFORMULA P-208 Service Manual With Parts Catalog

CHAPTER 5 TROUBLESHOOTING

3. Streaks in Image

Streaks in the feeding direction may appear in the image due to dirt on the reading glass. Dirt
on the separation pad or rollers may also be transferred to the document.
When white streaks appear in the image, this is due to shading correction being performed
when the reading glass is dirty.
Cause/Faulty
Location
Reading glass
Roller
Feed Path
CIS unit
Light Adjustment

4. Image Slanted

If the document is fed at an angle, the image will become slanted.
Cause/Faulty
Location
Setting documents
Setup of "Skew
correction"
Feeding documents
5-40
Step Check Item
1 Is the reading glass clean?
2 Is the surface clean?
3 Is the feed path clean?
4 Is the inside of the CIS unit
clean?
5 Have you executed "Light"
in service mode
Table 5-504
Step Check Item
1 Is the document set prop-
erly?
2 Are the document guides
adjusted to fit the docu-
ment width?
3 Was "Skew
set?
Note: Since there are two
types, select one
according
situation.
4 Are documents
straight?
Table 5-505
COPYRIGHT © CANON ELECTRONICS INC. 2012
Result
NO
NO
NO
NO
NO
Result
NO
NO
correction"
NO
to the
fed
NO
Action
Clean the reading
glass.
Replace the reading
cover (reading glass) if
it is damaged.
Clean or replace it.
Clean it.
Clean or replace the
reading unit.
Execute Light Ad-
justment
Action
Set properly.
Correct the position.
Set it.
You can correct the
slant of an image using
image processing.
Perform the checks in
"III. OPERATION
TROUBLESHOOTING
4. Scanner does not
feed properly".
CANON P-208 FIRST EDITION