Make certain you have read the Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY manual thoroughly before attempting the Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY bulb replacement on your Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY. Without touching the surface of the Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY 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 ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY replacement parts. Your bulb should be sitting just beyond the opening of the Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY body. Reach in with two fingers and disconnect the Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY bulb. Reverse these steps to re-assemble your Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY. This concludes the Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY review - be sure to read the entire Hitachi ED-S3550 SVGA 2000 LUMENS 5.5LBS 3 YR WARRANTY manual.