Dust Problems; Stitching Problems - Contex SD One+ Technical Service Manual

Service Guide SD One+

Dust Problems.

 There are image quality problems that are not
related to HW errors. These could be due to
insufficient cleaning, bad calibration or limitations
in the CIS technology. Streak's running in the
scan direction which seems to appear and
disappear during the scan is most likely caused
by dust. Clean the scanner and the original. The
streaks are often a darker shade of color.
 Streaks that run in scan direction, that are color
independent or a lighter shade of the color, are
often related to the calibration. Dust that was
present in the scanner during calibration, but has
been cleaned away since.

Stitching Problems.

 Other issues could be that the scanner simply
needs to be calibrated, either because the
parameter block has been erased, never been
calibrated or that the scanner has been moved
around.
Stitching problem between 2 CIS modules.
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