Lexmark CX833
Sleep mode
From the control panel, navigate to Settings > Device > Power Management > Timeouts > Sleep Mode.
Set the amount of time that the printer stays idle before it enters Sleep Mode.
Hibernate mode
From the control panel, navigate to Settings > Device > Power Management > Timeouts > Hibernate Timeout.
Set the amount of time that the printer stays idle before it enters hibernate mode.
Notes:
Know when the printer receives incoming fax messages by configuring the fax speaker mode and volume.
Configure the Simple Mail Transfer Protocol settings on your printer to let it send scanned documents or printer alerts through email.