User ManualTable of ContentsAcer Projector1H9500BD/E250D/HE-820J Series User's Guide1Information for your safety and comfort3First things first8Usage Notes8Precautions8Contents9Introduction11Product Features11Package Overview12Projector Overview13Getting Started18Connecting the Projector18Turning the Projector On/Off19Adjusting the Projected Image21User Controls29Installation menu29Acer Empowering Technology30Onscreen Display (OSD) Menus31Color32Image34Management37Setting38Timer40Language40Appendices41Troubleshooting41LED & Alarm Definition Listing45Replacing and cleaning the dust filters46Replacing the Lamp47Ceiling Mount Installation48Specifications51Compatibility modes53Regulations and safety notices57Size: 4.41 MBPages: 61Language: EnglishOpen manual