Lexmark 4800 Series - Manual (Page 57)

Note: Factory default settings cannot be deleted.
Resetting the printer to factory default settings
You can reset your printer to the original settings without using the printer software.
Note: Resetting to factory default settings will delete all printer settings you selected.
1 Press repeatedly to choose Maintenance.
2 Press .
3 Press repeatedly to choose Reset Defaults.
4 Press .
5 Select Yes to reset all menu defaults.
6 Select Yes to reset all network settings.
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