After replacing the Projector Lamp, resetting the lamp timer is highly recommended to help keep track of how long the lamp has been on. The Lamp Timer will also let you know when the lamp needs to be replaced.
The Lamp timer can be found in the projector Menu. The specific location of the timer can be found in different locations depending on the model of the projector. Please refer to the user guide for specific instruction on how to locate the Lamp Timer.