Canon DR-1210C Service Manual page 96

CHAPTER 5 TROUBLESHOOTING
2. Too Dark/Too Light
Image does not look appropriate due to improper brightness.
Cause/
Faulty location
"Brightness" setting
Dark background
document
3. Black Borders Around Image
Black borders appear around the images.
Note, however, that borders having a thickness of about 1 mm are within the specifications,
so they are not a failure.
Cause/Faulty
location
"Page Size" setting
Document setting
Setting of
"Auto-detection" for
paper size or
"Border Removal"
5-16
Step Check item
1 Is the "Brightness" properly
set?
The brightness should be
set to "Auto" in ordinary
case but may be required to
change according to the
type of document.
2 Is the "Advanced Text En-
hancement" selected?
Table 5-402
Step Check item
1 Is the "Page Size" properly
set?
2 Is the document set at the
correct position?
3 Is "Auto-detection" or "Bor-
der Removal" set?
Table 5-403
COPYRIGHT © 2006 CANON ELECTRONICS INC.
Result Action
NO Change the setting.
Adjust the "Contrast" in
addition if necessary.
NO Select.
Dark background is
eliminated and the
scanned image looks
better.
Result Action
NO Change the setting.
NO Set at the correct posi-
tion.
NO Set.
Black border can be
removed by image
processing.
CANON DR-1210C FIRST EDITION FEB. 2006