Designjet Z Series — Service Manual 1-28
Reading the Diagnostic Print Results
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.
Corrective Action
In order to solve problems that result in banding, try the following:
1 Check that the appropriate print quality settings are being used (refer to the
User’s Guide for more information).
2 Check that the loaded media is the same type as selected in the printer. You
can verify the media type selected through the Front Panel (Main Menu/
Paper menu/View loaded paper).
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 Perform the Paper Advance Calibration using the same type of paper that
will be used for the final print (Main Menu/Image Quality Maintenance/
Paper Advance Calibration/Calibrate Paper Advance).
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 Force Drop Detection, Page 1-
37
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 procedures
to resolve the problem.
Reading the Advanced Diagnostic Print Results
Visual Alignment Diagnostic
Nozzle Health
Force Drop Detection
If you still see Image Quality problems after performing these tests and the
Diagnostic Print still looks correct, then it might be a problem with the image
itself, or a software/application problem.
To Next Page
Loading...