Lexmark X644E User Manual page 22

Changing a Numerical
Example: If you select Menus > Option Card Menu > SCS/TNE
Setting
Menu > TN3270e Setup > Network Setup > Server Info > Keep
Alive Time, you will see the following on screen:
Keep Alive Time 45
Touch to decrease the value or to increase the value.
Touch (Submit) to save the desired value.
When the setting is saved, the screen will return to the previous
menu level.
Some numerical values contain more than one field. For example,
Menus > SCS/TNE Menu > TN3270e Setup > Network Setup >
Server Info > IP Address. For these, use the Keyboard as
described in "Changing a Text String" on page 21.
Understanding the Operator Panel: MFP Touch Screen 22