HP OfficeJet Pro 7740 - Manual (Page 150)

● If you are connecting the printer using a wireless connection, make sure the wireless network is
functioning properly. For more information, see Network and connection issues .
● If you are using HP ePrint , check the following:
—
Make sure the printer's email address is correct.
— Make sure that the printer's email address is the only address listed in the “To” line of the email
message. If other email addresses are listed in the “To” line, the attachments you are sending
might not print.
— Make sure you are sending documents that meet the HP ePrint requirements. For more
information, visit HP Connected (This site might not be available in all countries/regions.).
● If your network uses proxy settings when connecting to the Internet, make sure the proxy settings you
are entering are valid:
—
Check the settings being used by the web browser you are using (such as Internet Explorer, Firefox,
or Safari).
— Check with the IT administrator or person who set up your firewall.
If the proxy settings used by your firewall have changed, you must update these settings in either
the printer control panel or the embedded web server. If these settings are not updated, you will
not be able to use Web Services.
For more information, see
Set up Web Services .
TIP: For additional help on setting up and using Web Services, visit HP Connected (This site might not be
available in all countries/regions.).
Maintain the printer
What do you want to do?
Clean the scanner glass
Dust or dirt on the scanner glass, scanner lid backing, or scanner frame can slow down performance, degrade
the quality of scans, and affect the accuracy of special features such as fitting copies to a certain page size.
To clean the scanner glass
WARNING! Before cleaning the printer, turn the printer off by pressing (the Power button) and unplug
the power cord from the electrical socket.
1. Lift the scanner lid.
ENWW Maintain the printer 137