HP Photosmart D7400 User Guide - Page 132

Print quality troubleshooting, A Virtual Private Network VPN is preventing the HP Photosmart

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Troubleshooting The Printer Not Found screen appears during installation Cause: A firewall, anti-virus, or anti-spyware application is preventing the HP Photosmart from accessing your computer. Solution: Uninstall the HP Photosmart software, and then reboot your computer. Temporarily disable anti-virus or anti-spyware applications, and then reinstall the HP Photosmart software. You can re-enable your anti-virus or anti-spyware applications after installation is complete. If you see firewall pop-up messages, you must always accept or allow the pop-up messages. If the screen still appears, try uninstalling the HP Photosmart software, rebooting your computer, and temporarily disabling your firewall before reinstalling the HP Photosmart software. You can re-enable your firewall application after installation is complete. If you still see firewall pop-up messages, you must always accept or allow the pop-up messages. For more information, see the documentation provided with the firewall software. Cause: A Virtual Private Network (VPN) is preventing the HP Photosmart from accessing your computer. Solution: Temporarily disable the VPN before proceeding with the installation. NOTE: The HP Photosmart functionality will be limited during VPN sessions. Cause: The HP Photosmart is not turned on. Solution: Turn on the HP Photosmart. Print quality troubleshooting If you are having problems with print quality, try the solutions in this section and observe the following guidelines: • Replace refilled or empty ink cartridges with genuine HP ink cartridges. • Check the device settings to make sure that the print mode and paper selection is correct for the paper and the task. For more information, see "Set the paper type for printing" on page 67 and "Choose papers for printing" on page 55. • Print and evaluate a self-test report. For more information, see "Print a self-test report" on page 99. If the self-test report shows a defect, try the following: • Clean the ink cartridges automatically. For more information, see "Clean the print head" on page 106. • If you are missing lines when you print, clean the electrical contacts. For more information, see "Clean the ink cartridge contacts" on page 107. • If the self-test report does not show a problem, investigate other causes, such as the image file or software program. For additional ink cartridge troubleshooting, visit the HP Web site at www.hp.com/ support. Print quality troubleshooting 131

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The Printer Not Found screen appears during installation
Cause:
A firewall, anti-virus, or anti-spyware application is preventing the
HP Photosmart from accessing your computer.
Solution:
Uninstall the HP Photosmart software, and then reboot your computer.
Temporarily disable anti-virus or anti-spyware applications, and then reinstall the
HP Photosmart software. You can re-enable your anti-virus or anti-spyware
applications after installation is complete. If you see firewall pop-up messages, you
must always accept or allow the pop-up messages.
If the screen still appears, try uninstalling the HP Photosmart software, rebooting your
computer, and temporarily disabling your firewall before reinstalling the
HP Photosmart software. You can re-enable your firewall application after installation
is complete. If you still see firewall pop-up messages, you must always accept or allow
the pop-up messages.
For more information, see the documentation provided with the firewall software.
Cause:
A Virtual Private Network (VPN) is preventing the HP Photosmart from
accessing your computer.
Solution:
Temporarily disable the VPN before proceeding with the installation.
NOTE:
The HP Photosmart functionality will be limited during VPN sessions.
Cause:
The HP Photosmart is not turned on.
Solution:
Turn on the HP Photosmart.
Print quality troubleshooting
If you are having problems with print quality, try the solutions in this section and observe
the following guidelines:
•
Replace refilled or empty ink cartridges with genuine HP ink cartridges.
•
Check the device settings to make sure that the print mode and paper selection is
correct for the paper and the task.
For more information, see
“
Set the paper type for printing” on page 67
and
“
Choose
papers for printing” on page 55
.
•
Print and evaluate a self-test report.
For more information, see
“
Print a self-test report” on page 99
.
If the self-test report shows a defect, try the following:
•
Clean the ink cartridges automatically. For more information, see
“
Clean the print
head” on page 106
.
•
If you are missing lines when you print, clean the electrical contacts. For more
information, see
“
Clean the ink cartridge contacts” on page 107
.
•
If the self-test report does not show a problem, investigate other causes, such as the
image file or software program.
For additional ink cartridge troubleshooting, visit the HP Web site at
www.hp.com/
support
.
Print quality troubleshooting
131
Troubleshooting