© 3M 2008. All Rights Reserved. 273M™ Super Close Projection System User ControlsLanguageChoose the multilingual OSD menu. Use the or key to selectyour preferred language.Press “Enter” to finalize the selection.KeystonePress the or to adjust image distortion vertically and make asquarer image.Eco ModeChoose “On” to use less brightness from the projector lamp, yet willmake the projector lamp last longer.High AltitudeChoose “On” to turn on High Altitude mode. Operate the fans at fullspeed continuously to allow for proper high altitude cooling of theprojector.Input SourceEnable input sources. Press into the sub menu and then useor to select. Press “Enter” to finalize the selection. The projectorwill not search inputs that are de-selected.Management-1/3