If there is noise on the phone line, received faxes may include white horizontal lines across the page (like missing lines) or compressed lines; or, errors will appear on the display.
Make sure that the machine is turned on.
Press the Setup button.
Use the button to select FAXsettings, then press the OK button.
Use the button to select Advanced FAXsettings, then press the OK button.
Use the button to select Adv. communication, then press the OK button.
Use the button to select ECM RX , then press the OK button.
Use the button to select ON or OFF, then press the OK button.
OFF: The machine will not receive a fax using ECM. Reception may be faster. However, the image quality will suffer if there is noise on the phone line.
ON: Image quality will be good if there is noise on the phone line.