Epson EB-825 - Manual (Page 52)

Reset Menu
Sub Menu Function
Reset All You can reset all items in the Configuration Menu to their default settings.
The following items are not reset to their defaults: Input Signal, User's Logo, all items for Network menus, Lamp Hours, and Language.
Reset Lamp Hours You can clear the cumulative Lamp Hours use time, and return it to "0H". Reset when you replace the Lamp.
List of Functions
52