HP C7280 User Guide - Page 190

Print quality troubleshooting, A Virtual Private Network VPN is preventing the HP All-in-One

Page 190 highlights

Solution: Run the wireless setup process again and enter the correct passphrase. The passphrase is case-sensitive. The Printer Not Found screen appears during installation Cause: A firewall, anti-virus, or anti-spyware application is preventing the HP Allin-One from accessing your computer. Solution: Uninstall the HP All-in-One software, and then reboot your computer. Temporarily disable anti-virus or anti-spyware applications, and then reinstall the HP All-in-One 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 All-in-One software, rebooting your computer, and temporarily disabling your firewall before reinstalling the HP All-in-One 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 All-in-One from accessing your computer. Solution: Temporarily disable the VPN before proceeding with the installation. NOTE: The HP All-in-One functionality will be limited during VPN sessions. Cause: The HP All-in-One is not turned on. Solution: Turn on the HP All-in-One. 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 85 and "Choose papers for printing and copying" on page 73. • Print and evaluate a self-test report. For more information, see "Print a self-test report" on page 149. Print quality troubleshooting 189 Troubleshooting

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Solution:
Run the wireless setup process again and enter the correct passphrase.
The passphrase is case-sensitive.
The Printer Not Found screen appears during installation
Cause:
A firewall, anti-virus, or anti-spyware application is preventing the HP All-
in-One from accessing your computer.
Solution:
Uninstall the HP All-in-One software, and then reboot your computer.
Temporarily disable anti-virus or anti-spyware applications, and then reinstall the
HP All-in-One 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 All-in-One software, rebooting your
computer, and temporarily disabling your firewall before reinstalling the HP All-in-One
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 All-in-One from
accessing your computer.
Solution:
Temporarily disable the VPN before proceeding with the installation.
NOTE:
The HP All-in-One functionality will be limited during VPN sessions.
Cause:
The HP All-in-One is not turned on.
Solution:
Turn on the HP All-in-One.
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 85
and
Choose
papers for printing and copying” on page 73
.
Print and evaluate a self-test report.
For more information, see
Print a self-test report” on page 149
.
Print quality troubleshooting
189
Troubleshooting