Actions
1. Check that the scanner lid is properly closed, open and close it by pushing it down until you hear a click.
Then calibrate the scanner as indicated in Support Menus, Diagnostic Plots & Calibrations on page 181,
then reboot and repeat the scan.
2. If the problem persists, repeat the scan or copy using a higher resolution (300dpi or more if scanning,
Normal or Best if copying). You should also set background color removal to O, or set the content type
to Mixed if copying.
3. If the problem persists, analyze pattern F in modules 0, 1 and 2 of the diagnostic plot. A correct example
is given below, followed by two incorrect examples. Note that there is a black ring near the center of
pattern F. In this step, you must look at the region near the black ring. If you can see discontinuities in
the black and white lines, try to reset the Scanbars and recalibrate the scanner. If the problem persists;
try to replace the Scanbars and the sliders, then recalibrate the scanner.
162 Chapter 2 Troubleshooting ENWW
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