HP Designjet T Series — Service Manual 1-26
Print quality troubleshooting
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). Select the custom print quality options in
the Print dialog, and if you are using best quality and glossy paper, try
turning on the Maximum detail option. Reprint the job in case the problem
has been solved.
3 If the resolution of the image is greater than the printing resolution, a loss of
line quality may be seen. You can find the Max. Application Resolution
option in the Windows driver dialog's Advanced tab, under Document
Options > Printer Features. Reprint the job in case the problem has been
solved.
4 Check the Printhead alignment status. If the status is PENDING, perform the
Printhead Alignment (Main Menu/Image Quality Maintenance/Align
Printheads). After alignment reprint the job.
5 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). After
calibration reprint the job.
6 Use Part 3 of the Image Quality Diagnostic Print, check if there are a
significant amount of nozzles out in the color that is actually causing the
problem (if see you a problem with the Black color in the customer print, then
only check the Black printhead in the Image Quality Diagnostic Print). If
there is a significant amount of nozzles out then replace the defective
Printhead.
Problems with Stepped Lines
Description of problem
When you look at the image you have printed there are ‘stepped lines’ in
the borders of arrows and diagonal lines. The lines should be straight with
no stepping.
Shown below is an example of what you might see if you have problems
with Stepped Lines:
Corrective Action
1 The problems may be inherent in the image that you are trying to print. Try
to improve the image with the application that generated the file.
2 Check that the appropriate print quality settings are being used (refer to the
User’s Guide for more information).
3 Select the custom print quality options in your Print dialog, and if you are
using Glossy media and BEST quality, turn on the Maximum Detail
option.
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