To troubleshoot your printer’s fax function, try the following:

1. Check your printer manual for instructions on setting up the fax function.
2. Be sure the printer is correctly connected to the correct phone line.
3. Ensure the fax settings are correctly configured (see the printer manual).
4. Check the phone line connection from wall to printer.
5. Check to make sure all connections are secure.
6. Try to send a fax to another number to confirm it works.
7. If the connection still fails, contact the printer manufacturer.