Make certain you have read the Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB manual thoroughly before attempting the Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB bulb replacement on your Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB. Without touching the surface of the Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB 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 Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB replacement parts. Your bulb should be sitting just beyond the opening of the Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB body. Reach in with two fingers and disconnect the Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB bulb. Reverse these steps to re-assemble your Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB. This concludes the Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB review - be sure to read the entire Optoma Technology PROJECTOR XGA 4000 LAMP 3000L 2000:1 DUAL DVI D HDCP 27DB manual.