The plot is printed in Best or Normal mode (according to the menu option selected) with Error Hiding on. The
first top band has 100% ink density patches while the bottom band has 50% ink density.
Troubleshooting Banding Problems
If banding does not occur in all the colors, then it is more than likely a Printhead problem. In this case, try the
following.
1. Check that the appropriate print quality settings are being used.
2. Recover the printheads using the option through the Front Panel (Image quality maintenance > Clean
printheads). Reprint the Diagnostic Print or the print file and if the problem persists, replace the faulty
Printhead.
If banding does occur in all the colors, then it is more than likely a Paper Advance problem:
●
If the bands are light, it means that the paper has advanced too much.
●
If the bands are dark, it means that the paper hasn’t advanced enough.
●
In high quality modes, graininess in all colors can indicate problems either with alignment or Paper
Advance.
In order to solve any of these problems, try the following.
1. Check that the appropriate print quality settings are being used.
2. Check that the loaded paper is the same type as selected in the printer. Check this through the front
panel (at the front panel, select the
icon, then View loaded paper > View paper details).
3. If the customer is using low-quality paper, try recommending better quality paper (preferably HP
paper). Printer performance can only be guaranteed by using recommended papers.
4. Check the advance with the help of the Visual Paper Advanced Diagnostic.
NOTE: If there is white point banding in only one color band and the problem cannot be fixed using the
Printhead recoveries, in some cases using the force a drop detection option can fix this issue (see Others
Diagnostics: Force Drop Detection).
No printing defects found in the diagnostic print
If all the test patterns from the Diagnostic Print are correct and you still experience Image Quality problems,
you can use the following advanced procedures to resolve the problem.
●
Visual Alignment Diagnostics
●
Visual Paper Advanced Diagnostic
●
Force Drop Detection
●
Disable Paper Advance Sensor
Visual Alignment Diagnostic Print
ENWW How to use the Image Quality Service Diagnostic Print 147
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