NEC WT615 User Manual page 137

6. Using On-Screen Menu
Clearing Lamp Hour Meter [Clear Lamp Hour Meter]
Resets the lamp clock back to zero.
NOTE: The projector will turn off and go into standby mode after 2100 hours (up to 4100 hours in Eco mode) of service. In this
condition you cannot clear the lamp hour meter on the menu. If this happens, press the "HELP" button on the remote control for
ten seconds to reset the lamp clock back to zero. Do this only after replacing the lamp.
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