Make certain you have read the Hitachi CP-S420W Projector manual thoroughly before attempting the Hitachi CP-S420W Projector bulb replacement on your Hitachi CP-S420W Projector. Without touching the surface of the Hitachi CP-S420W 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 Hitachi CP-S420W Projector replacement parts. Your bulb should be sitting just beyond the opening of the Hitachi CP-S420W Projector body. Reach in with two fingers and disconnect the Hitachi CP-S420W Projector bulb. Reverse these steps to re-assemble your Hitachi CP-S420W Projector. This concludes the Hitachi CP-S420W Projector review - be sure to read the entire Hitachi CP-S420W Projector manual.