Remove the rear panel, front panel, and top. the colorwheel is between the lens and the lamp. removing it is easy, but to unplug it, you need to remove the 2 power boards, the shield, and the fan/lamp housing assembly. there is a tip on this site with a detailed description on replacing it. it's under infocus x2. the x2 and the sp4805 are basically the same machine.
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Remove the rear panel, front panel, and top. the colorwheel is between the lens and the lamp. removing it is easy, but to unplug it, you need to remove the 2 power boards, the shield, and the fan/lamp housing assembly. there is a tip on this site with a detailed description on replacing it. it's under infocus x2. the x2 and the sp4805 are basically the same machine.