HP OfficeJet Pro 7740 User Manual
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c.
In the printer software, click Print, Scan, & Fax , and then click Maintain Your Printer to access the
printer toolbox.
d.
Click Print Diagnostic Information on the Device Reports tab to print a diagnostics page.
6.
Review the blue, magenta, yellow, and black boxes on the diagnostics page. If you are seeing streaks in
the color and black boxes, or no ink in portions of the boxes, then automatically clean the printhead.
To clean the printhead from the printer software
a.
Load letter, A4, or legal unused plain white paper into the input tray.
b.
Open the HP printer software. For more information, see
Open the HP printer software (Windows)
c.
In the printer software, click Print, Scan, & Fax and then click Maintain Your Printer to access the
Printer Toolbox.
d.
Click Clean Printheads on the Device Services tab. Follow the onscreen instructions.
7.
If cleaning the printhead does not solve the problem, contact HP support. Go to
.
This website provides information and utilities that can help you correct many common printer
problems. If prompted, select your country/region, and then click All HP Contacts for information on
calling for technical support.
To improve print quality (OS X)
1.
Make sure you are using original HP cartridges.
2.
Check the paper type.
For best print quality, use high quality HP paper, or papers that adhere to the ColorLok® standard. For
more information, see
Always make sure the paper you are printing on is flat. For best results when printing images, use HP
Advanced Photo Paper.
Store specialty paper in its original packaging inside a resealable plastic bag on a flat surface in a cool,
dry place. When you are ready to print, remove only the paper you plan to use immediately. When you
have finished printing, return any unused photo paper to the plastic bag. This prevents the photo paper
from curling.
3.
Make sure you have selected the appropriate paper type and print quality in the Print dialog.
4.
Check the estimated ink levels to determine if the cartridges are low on ink.
Consider replacing the print cartridges if they are low on ink.
5.
Align the printhead.
To align the printhead from the software
a.
Load Letter or A4 plain, white paper in the input tray.
b.
Open HP Utility.
NOTE:
HP Utility is located in the HP folder in the Applications folder.
c.
Select your printer from the list of devices at the left of the window.
d.
Click Align.
e.
Click Align and follow the onscreen instructions.
f.
Click All Settings to return to the Information and Support pane.
122 Chapter 10 Solve a problem
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