Precautions with regard to safetyENGLISH - 11 ImportantInformationDo not set up the projector near high-voltage powerlines or near motors.The projector may be subject to electromagneticinterference.If installing the projector to the ceiling, ask aqualified technician to carry out all installation work.You will need to purchase the separate installation kit(Model No. ET-PKF100H, ET-PKF100S).Furthermore, all installation work is should only becarried out by a qualified technician.See “Ceiling mount bracket safeguards” on page 58for the safety cable installation.If using this projector at high elevations 1 400 -2 700 m (4 593 - 8 858 ft) sea level, set the HIGHALTITUDE MODE to ON. See “HIGH ALTITUDEMODE” on page 44.Failure to observe this may result in malfunctions orthe life of the lamp or the other components may beshortened.In order to get the best picture qualityDraw curtains or blinds over any windows and turn offany lights near the screen to prevent outside light orlight from indoor lamps from shining onto the screen.Do not touch the surfaces of the lens or the frontglass with your bare hands.If the surface of the lens becomes dirty fromfingerprints or anything else, this will be magnifiedand projected onto the screen. Moreover, when notusing the projector, close the front panel cover.Liquid crystal panelDo not project the same image for long periods oftime, as this may remain as an afterimage on theliquid crystal panel. Display the white screen testpattern for more than an hour to remove it. See“TEST PATTERN” on page 45.The liquid crystal panel of the projector is built withvery high precision technology to provide fine picturedetails. Occasionally, a few stuck pixels may appearon the screen as fixed points of blue, green or red. Itis recommended to switch off the projector once andtry after 1 hour later again. Please note that this doesnot affect the performance of your LCD.The projector has a high pressure mercury lamp andthat is characterised as follows.The brightness of the lamp depends on the durationof use.The lamp may explode or shorten the lamp life byshocks or chipping damage.The lamp may explode only occasionally after usingthe projector.The lamp may explode if using the projector after theinstructed lamp replacement timing.When the lamp exploded, it emits internal smoke-likegas.The lamp life is depends on individual lampcharacteristics, usage condition and the installationenvironment. Especially the consecutive use of theprojector for more than 10 hours, or the frequentswitching on or off may greatly affect on the lamp lifeeven when lamp usage is less than 1 year.Optical componentsIf you use the projector consecutively 12 hours everyday, the optical components may need to be replacedin less than 1 year.Take the safety measures for use of the projectorthat should cover the following envisionedincidents.The leakage of your personal registered information.Dishonest operation by an untrusted third party.Locking out or prevent anyone else from using theprojector by an untrusted third party.Security instructionThe connecting network must be secured by firewallor others.Change your password regularly.Do not use password too simple to guess.The Authorised Service Centre will never ask you forthe password.Do not share your password with anyone else.Password the projector and restrict access toauthorized users only.Cautions on useSecurity