In the case of detecting a high number of consecutive faulty nozzles in any of the color bars, you should clean
the printhead, selecting the relevant color group.
If the problem persists after recovering the printhead, consider replacing it.
Paper advance plot
The Visual Paper Advance Diagnostic prints a test plot to check that the paper advance is operating correctly.
It consists of three plots printed at the left, center, and right of the paper. These three plots are the same,
and contain several numbered columns. The following illustrations shows an example of the Visual Paper
Advance Diagnostic plot:
The most uniformly centered will be the white/lightest band; better the media advance the printer has.
This should be true for all three plots or the printer will have differential banding (a difference of advance
between the left and right).
When the white / light band is clearly not uniform (in the same band or comparing to the other bands),
perform a user paper advance calibration, in the Image Quality maintenance menu (see User Guide for more
details).
Nozzle Health
Nozzle health print is an extended version of the Image Quality Service prints, focused exclusively on nozzle
health. It’s not intended to help to understand overall banding problems, used only for specific nozzle health
problems.
For each individual colored pattern, check that most of the dashes are present. If you see missing dashes in
one color, you should clean the printhead, selecting the relevant color group.
ENWW Service Utilities 187
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