CHAPTER 5 TROUBLESHOOTING
2. Light Adjustment
3) Select [Light Adjustment] from the main
menu screen.
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.
Adjustment sheet
Figure 5-215
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.
4) A screen is displayed to check the
adjustment sheet. Check that the sheet is
placed correctly and select [OK].
Operation Procedure
1) Clean feed path, roller, and reading
glass.
2)
Open the document guides fully
extended, then place a shading sheet
you prepared to fit the width between the
document guides.
Figure 5-216
5) The adjustment starts automatically. The
sheet is fed, and a progress screen is
displayed.
Figure 5-214
Figure 5-217
6) Even after the sheet has been ejected,
the data may be processed inside the
machine. The progress screen
disappears, and a warning screen is
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CANON ELECTRONICS INC. 2011 CANON DR-M160 FIRST EDITION
5-11