27BEFORE USEPreparing the Remote ControlInstalling Remote Control BatteriesRemote Control Operating RangePoint the remote control to the infraredremote receiver on the front or rear of theprojector whenever pressing any button.z Use the remote control within a distanceof approximately 5 m (16.4') from the pro-jector.z Use the remote control within an angle of30° in any direction from directly in frontof the infrared remote receiver.z You can check the batteries of the remote control by pressing the [LIGHT] button.If all buttons on the remote control do not light when the [LIGHT] button is pressed, or but-tons are inoperative when you attempt to operate the projector, replace with new batteries.z It is recommended to check the batteries before a presentation.The remote control may be inoperative if:z There is an obstacle between the remote control and main unit.z The infrared remote receiver on the main unit is exposed to direct sunlight or strong light oflighting equipment.z The remote control uses infrared light.z When you use two projectors at the same time, you can change the channel settings to pre-vent the two remote controls from interfering with each other (P111).1 Open the battery com-partment lid.Slide the lid with itpressed down.2 Insert batteries.Insert new two AAA-sizebatteries in the compart-ment with the + and -poles positioned cor-rectly.3 Replace the compart-ment lid.30°30°30°30°5 m(16.4')5 m(16.4')