Brother ADS-2600W Service Manual page 119

(10) After the scanning, compare the scanned data on the test chart which framed red in the
figure below with the ones in the limit sample. If the result is worse than the limit sample,
perform procedures in "Acquire white level data and set CIS scan area" again. And then
wipe the first and second side CIS glass with a dry cleaning cloth four times in the same
direction, and follow the instructions above again to scan.
If the problem persists, replace the CIS.
Test chart DS-001
Black band.bmp
Black streak.bmp
White band.bmp
White streak.bmp
OK limit
4-8
OK limit
OK limit
OK limit
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