HP DesignJet T790 and T1300 Printer Series - Using your printer

The whole image is blurry or grainy
1. Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in
your software. See View information about the paper on page 40.
2. Check that you are printing on the correct side of the paper.
3. Check that you are using appropriate print-quality settings (see Printing on page 46). In some cases, you
can overcome a print-quality problem merely by selecting a higher print-quality level. For instance, if you
have set the Print Quality slider to Speed, try setting it to Quality. If you change the print-quality settings,
you may wish to reprint your job at this point in case the problem has been solved.
4.
Go to the front panel and press and then to see the printhead alignment status. If the status is
PENDING, you should align the printheads. See Align the printheads on page 159. After alignment, you
may wish to reprint your job in case the problem has been solved.
5.
Go to the front panel and press and then to see the paper advance calibration status. If the
status is DEFAULT, you should perform paper advance calibration: see Recalibrate the paper advance
on page 138.
If the problem persists despite all the above actions, contact your customer service representative for further
support.
The paper is not at
If the paper does not lie at when it comes out of the printer, but has shallow waves in it, you are likely to see
defects in the printed image, such as vertical stripes. This can happen when you use thin paper that becomes
saturated with ink.
146 Chapter 17 Troubleshooting print-quality issues ENWW