Chapter 1 Preparation — Precautions for useENGLISH - 17Precautions for useLens cushion(Only for the projector purchased with the standard zoom lens)f In order to protect the projection lens from the vibration during transportation, lens cushion is attached to theproduct at the time of purchase. Please remove the lens cushion before use.Lens cushionCautions when transportingf When transporting the projector, hold it securely by its bottom and avoid excessive vibration and impacts. Theymay damage the internal components and result in malfunctions.f Do not transport the projector with the adjustable feet extended. Doing so may damage the adjustable feet.f Do not move or transport the projector with the wireless module (Model No.: ET-WML100) of the optionalaccessories attached. Doing so may damage the wireless module.Cautions when installingrDo not set up the projector outdoors.The projector is designed for indoor use only.rDo not set up the projector in the following locations.f Places where vibration and impacts occur such as in a car or vehicle: Doing so may cause damage to internalcomponents or malfunction.f Locations near the sea or areas affected by corrosive gas: Corrosion may damage internal components orcause the projector to malfunction.f Near the exhaust of an air conditioner: Depending on the conditions of use, the screen may fluctuate in rarecases due to the heated air from the air exhaust port or the hot or cooled air. Make sure that the exhaustfrom the projector or other equipment, or the air from the air conditioner does not blow toward the front of theprojector.f Near high-voltage power lines or near motors: Doing so may interfere with the operation of the projector.f Places with sharp temperature fluctuations such as near lights (studio lamps): Doing so may shorten the life ofthe lamp, or result in deformation of the outer case due to heat, which may cause malfunctions.Follow the operating environment temperature of the projector.rBe sure to ask a specialized technician or your dealer when installing the projector ona ceiling.The optional Ceiling Mount Bracket is required. Be sure to use the Projector Mount Bracket together with theceiling mount bracket for high ceilings or low ceilings.Model No.: ET-PKD120H (for High Ceilings), ET-PKE300B (Projector Mount Bracket) ET-PKD120S (for Low Ceilings), ET-PKE300B (Projector Mount Bracket)rAsk a qualified technician or your dealer to install the cable wiring for DIGITAL LINKconnection.(Only for PT-EZ590, PT-EW650 and PT-EX620)Image and sound may be disrupted if cable transmission characteristics cannot be obtained due to inadequateinstallation.