Clean NEC Projector Filter
It is very important to clean your filter when the message appears on your Smart board. 1. If you are facing the back of the projector, the filter is located on the right side near the corner.
2. Gently, lift up on the grooved edge to remove the filter.
3. Lightly brush off the dust.
4. Place the clean filter back into the projector.
5. Using your remote, you will need to reset the filter usage hours. a. Press the “Menu” button. b. Use the “down arrow button to scroll down to “Default.” c. Press the “right arrow button” and scroll down to “Clear Filter Usage.” d. Press the “Enter” key. e. A window will appear asking you if you are sure. Press the left arrow key to select “Yes.” f. Press the “Enter” key.