DesignJet T900 and T1500 Printer Series - User guide
Line lengths are inaccurate
If you have measured your printed lines and nd that the lengths are not suiciently accurate for your
purposes, you can try to improve line length accuracy in the following ways.
1. Print on HP Matte Film, for which your printer's line length accuracy is specied. See Functional
specications on page 180.
Polyester lm is about ten times more dimensionally stable than paper. However, using lm that is
thinner or thicker than HP Matte Film will reduce line length accuracy.
2. Set the Print Quality slider to Quality.
3. Maintain the room at a steady temperature between 10 and 30°C (50 and 86°F).
4. Load the roll of lm and let it rest for ve minutes before printing.
5. If you are still not satised, try recalibrating the paper advance. See Recalibrate the paper advance
on page 146.
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 54.
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 60). 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 , then , then Image quality maintenance > Calibration
status
to see the printhead alignment status. If the status is PENDING, you should align the printhead.
See Align the printhead on page 164. After alignment, you may wish to reprint your job in case the
problem has been solved.
5.
Go to the front panel and press , then , then Image quality maintenance > Calibration
status
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 146.
If the problem persists despite all the above actions, contact your customer service representative for further
support.
152 Chapter 18 Troubleshooting print-quality issues ENWW