HP Photosmart C4340 All-in-One Série Guide D'utilisation page 47

Chapter 4
Solution 8: Make sure extension phones or other equipment on the phone line are
not in use
Solution: Make sure extension phones (phones on the same phone line, but not connected
to the product) or other equipment are not in use or off the hook. For example, you cannot use
the product for faxing if an extension phone is off the hook, or if you are using a computer dial-
up modem to send e-mail or access the Internet.
Cause: Other equipment that uses the same phone line as the product might have been in
use.
If this did not solve the issue, try the next solution.
Solution 9: Make sure the product is connected to an analog phone line
Solution: Make sure you connect the product to an analog phone line or you will not be able
to send or receive faxes. To check if your phone line is digital, connect a regular analog phone
to the line and listen for a dial tone. If you do not hear a normal sounding dial tone, it might be
a phone line set up for digital phones. Connect the product to an analog phone line and try
sending or receiving a fax.
NOTE:
your service provider.
Cause: The product might have been connected to a telephone wall jack that was set up for
digital phones.
If this did not solve the issue, try the next solution.
Solution 10: If you use a DSL service, make sure you have a DSL filter installed
Solution: If you use a DSL service, make sure that you have a DSL filter connected or you
will not be able to fax successfully. The DSL service sends out a digital signal on the phone line
that can interfere with the product, preventing the product from sending and receiving faxes.
The DSL filter removes the digital signal and allows the product to communicate properly with
the phone line.
To check if you already have a filter installed, listen to your phone line or dial tone. If you hear
noise or static on the line, you probably do not have a DSL filter installed, or it is installed
incorrectly. Obtain a DSL filter from your DSL provider. If you already have a DSL filter, make
sure it is connected correctly.
Cause: The product shares the same phone line with a DSL service and a DSL filter was not
connected.
If this did not solve the issue, try the next solution.
Solution 11: If you use a DSL service, make sure the DSL modem is properly
grounded
Solution: If the DSL modem is not properly grounded, it can create noise on the phone line.
Phone lines with poor sound quality (noise) can cause faxing problems. You can check the sound
quality of the phone line by plugging a phone into the telephone wall jack and listening for static
or other noise.
If you hear noise, turn off your DSL modem.
NOTE:
support.
44 HP Photosmart C4340 All-in-One series
If you are unsure of the kind of phone line you have (analog or digital), check with
For information on turning your DSL modem off, contact your DSL provider for