CHAPTER 5 TROUBLESHOOTING
5. Light Adjustment
4) The adjustment proceeds automatically
while the progress screens are
displayed.
This mode performs fine adjustments
on the shading correction values since the
reading point differs between the white
reference sheet inside of the reading unit
and the actual document.
If the scanned image quality is
degraded, perform this adjustment. Also
perform this adjustment after replacing the
reading unit or after replacing the control
PCB recording the adjustment data.
Figure 5-207
This mode and the other adjustment
items can be performed at the same time.
For details, refer to the “All Adjustment”
item.
5) The sheet is fed. After the adjustment is
complete, the progress screen
disappears and the screen returns to the
service screen.
Adjustment sheet
The shading sheet is required to
execute this mode. Use TKM-0326 or
TKM-0332, which is the same shading
sheet as the one used for the
DR-2010C/2510C or others. Do not
use a sheet with any dirt or creases.
Note:
Shading sheets with a black line for
“Registration Adjustment” can also
be used.
Operation Procedure
1) Clean feed path, roller, and reading
glass.
5-6
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CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION