Note: Make sure that fax is configured. For more information, see Setting up the printer to fax.
From the home screen, touch Settings > Device > Preferences > Date and Time > Configure.
Configure the settings.
How to Change Date and Time & NTP Server for Lexmark CX825, CX860, and XC81x
Waiting for the right time to send your fax? Follow these easy steps to send your fax at a date and time it is needed.