Epson WorkForce Pro WF-7820 All-in-One Inkjet Printer - Manual (Page 356)

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• Make sure you have set up your header information and have not blocked your caller ID. Otherwise,
your faxes might be rejected by the recipient's fax machine.
• If user restriction has been enabled, you may need to enter a user name and password. Contact your
administrator for assistance.
• Make sure Receive Mode is set to Auto so you can receive faxes automatically.
• If you did not connect a telephone to your product, set the Receive Mode setting to Auto so you can
receive faxes automatically.
• Check that the cable connecting your telephone wall jack to your product's LINE port is secure.
• Print a fax connection report using your product control panel or fax software to help diagnose the
problem.
• Verify that the telephone wall jack works by connecting a phone to it and testing it.
• If there is no dial tone and you connected the product to a PBX (Private Branch Exchange) phone line
or Terminal Adapter, change the Line Type setting to PBX . If you still cannot send a fax, turn off the
product's dial tone detection setting. (Turning off the dial tone setting may cause the product to drop
the first digit of a fax number.)
• Check the Line Type setting and set it to PBX . If your phone system requires an external access code
to reach an outside line, register the code to the product and add a # (hash) to the beginning of the
phone number when dialing.
• If you connected your product to a DSL phone line, you must connect a DSL filter to the phone jack to
enable faxing over the line. Contact your DSL provider for the necessary filter.
• If you are connected to a DSL phone line, connect the product directly to a telephone wall jack and
send a fax. If it works, the problem may be caused by the DSL filter. Contact your DSL provider.
• If your telephone line has static, turn off your product's error correction mode fax communication
setting and try faxing again.
• Make sure you installed the FAX driver for your product and that it is not paused.
• The data being sent may be too large. Try faxing the originals in batches, by using a connected phone,
or by selecting On Hook . If you are faxing in monochrome, enable the Direct Send setting ( Fax > Fax
Settings > Fax Send Settings ).
• Try lowering the recipient's fax speed setting from the contact list menu.
• If a communication error occurs, change the Fax Speed setting to Slow(9,600bps) on the control
panel.
• Make sure the error correction mode (ECM) setting is turned on if you are trying to send or receive a
color fax.