HP Designjet T Series — Service Manual 1-25
Print quality troubleshooting
Corrective Action
1 Check that the paper type loaded corresponds to the paper type selected in
the front panel and in the software. You can verify the paper type selected
through the Front Panel (Main Menu/Paper menu/View loaded paper).
2 Check that the appropriate print quality settings are being used (refer to the
User’s Guide for more information) and reprint the image. In some cases
print quality problems can be resolved by selecting a higher print quality
level.
3 Print the Service Image Diagnostics Print, and clean any printheads that
need cleaning. Reprint the job in case the problem has been solved
.
4 Check the paper advance calibration status. If the status is PENDING,
perform the Paper Advance Calibration (Main Menu/Image Quality
Maintenance/Paper Advance Calibration/Calibrate Paper Advance).
5 After calibration reprint the job.
6 Watch the printer carriage when it reaches the end of its swath. If there is an
unexpected delay, this may cause the banding.
This delay is possibly the result of the following:
The user is performing tasks with other applications while printing
(particularly image processing applications). These applications are
using too many computer resources, and the computer cannot effectively
process the print job.
The file to be printed is complex, and the computer does not have the
capacity to print such complex files.
If printing over a LAN, it is possible that the LAN is too slow to meet the
requirements of the print job.
If this is the case, the following corrective measures can be taken:
1 Do not use the computer while printing. Close applications that use a large
amount of computer resources.
2 Convert the file PDF. Formats like PDF require less resources to print, which
may solve your banding problem.
Lines are Missing, Too Thin, or Too Thick
Description of problem
Shown below is an example of what you might see if you have this problem:
Corrective Action
1 Check that the paper type loaded corresponds to the paper type selected in
the front panel and in the software. You can verify the paper type selected
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