Make certain you have read the Mitsubishi HD4000U DLP Projector manual thoroughly before attempting the Mitsubishi HD4000U DLP Projector bulb replacement on your Mitsubishi HD4000U DLP Projector. Without touching the surface of the Mitsubishi HD4000U DLP 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 Mitsubishi HD4000U DLP Projector replacement parts. Your bulb should be sitting just beyond the opening of the Mitsubishi HD4000U DLP Projector body. Reach in with two fingers and disconnect the Mitsubishi HD4000U DLP Projector bulb. Reverse these steps to re-assemble your Mitsubishi HD4000U DLP Projector. This concludes the Mitsubishi HD4000U DLP Projector review - be sure to read the entire Mitsubishi HD4000U DLP Projector manual.