Acer PD523P - Manual (Page 30)

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User Controls
Management
(Computer / Video
Mode)
Lamp Hour Elapse
Displays the lamp’s elapsed operating time (in hours).
Lamp Reminding
Choose this function to show or to hide warning message when the
changing lamp message is displayed. The message will show up 30
hours before end of life.
Lamp Hour Reset
Press the button after choosing “Yes ”to turn the lamp hour
counter to 0 hours.
Reset
Press the button after choosing “Yes” to return the display pa-
rameters on all menus to the factory default settings.