Make certain you have read the Optoma Technology TS400 DLP Projector manual thoroughly before attempting the Optoma Technology TS400 DLP Projector bulb replacement on your Optoma Technology TS400 DLP Projector. Without touching the surface of the Optoma Technology TS400 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 Optoma Technology TS400 DLP Projector replacement parts. Your bulb should be sitting just beyond the opening of the Optoma Technology TS400 DLP Projector body. Reach in with two fingers and disconnect the Optoma Technology TS400 DLP Projector bulb. Reverse these steps to re-assemble your Optoma Technology TS400 DLP Projector. This concludes the Optoma Technology TS400 DLP Projector review - be sure to read the entire Optoma Technology TS400 DLP Projector manual.