Make certain you have read the INFOCUS LP690 Projector manual thoroughly before attempting the INFOCUS LP690 Projector bulb replacement on your INFOCUS LP690 Projector. Without touching the surface of the INFOCUS LP690 Projector lens, remove the lens tube and set it aside. Write down the number from inside the tube's inner lip for the purpose of make, model or serial number for any future need to buy INFOCUS LP690 Projector replacement parts. Your bulb should be sitting just beyond the opening of the INFOCUS LP690 Projector body. Reach in with two fingers and disconnect the INFOCUS LP690 Projector bulb. Reverse these steps to re-assemble your INFOCUS LP690 Projector. This concludes the INFOCUS LP690 Projector review - be sure to read the entire INFOCUS LP690 Projector manual.