Lexmark MX421 User Manual page 237

Troubleshooting
Cannot send or receive faxes using etherFAX
Action
Step 1
Make sure that the printer is connected to a network and that the
network is connected to the Internet.
Can you send or receive faxes using etherFAX?
Step 2
a
From the control panel, navigate to:
Settings > Fax > Fax Setup > General Fax Settings.
For non-touch-screen printer models, press
through the settings.
b
Make sure that you have the correct fax number.
c
Make sure that Fax Transport is set to etherFAX.
Can you send or receive faxes using etherFAX?
Step 3
Split large documents into smaller file sizes.
Can you send or receive faxes using etherFAX?
Can receive but not send faxes using analog fax
Action
Step 1
Load an original document properly into the ADF tray or on the
scanner glass.
Can you send faxes?
Step 2
Set up the shortcut number properly.
•
Check if the shortcut number is set for the telephone number
that you want to dial.
•
Dial the telephone number manually.
Can you send faxes?
Yes
The problem is
solved.
The problem is
solved.
to navigate
The problem is
solved.
Yes
The problem is
solved.
The problem is
solved.
237
No
Go to step 2.
Go to step 3.
Go to
https://www.etherfa
x.net/lexmark.
No
Go to step 2.
Contact customer
support.