Make certain you have read the IBM E400 DLP Projector manual thoroughly before attempting the IBM E400 DLP Projector bulb replacement on your IBM E400 DLP Projector. Without touching the surface of the IBM E400 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 IBM E400 DLP Projector replacement parts. Your bulb should be sitting just beyond the opening of the IBM E400 DLP Projector body. Reach in with two fingers and disconnect the IBM E400 DLP Projector bulb. Reverse these steps to re-assemble your IBM E400 DLP Projector. This concludes the IBM E400 DLP Projector review - be sure to read the entire IBM E400 DLP Projector manual.