71. IntroductionOpening and closing the lens coverSlide the lens cover to the left to uncover the lens.To cover the lens, slide the lens cover to the right.NOTE:• The lens cover works in conjunction with the AV mute function. Closing the lens cover will turn off the image and soundduring normal projector operation; opening it will restore the image and sound.With the lens cover closed the image and sound is turned off, however the lamp is still lit. If the projector stays this way forabout 2 hours, it will turn off automatically.• Do not pull the lens cover with excessive force or apply strong pressure in either the up or down direction. Doing so cancause damage to the lens cover sliding mechanism![M350X/M300X/M260X/M230X/M300W/M260W/M420X/M420XV][M350XS/M300XS/M260XS/M300WS/M260WS]AC InputConnect the supplied power cord’sthree-pin plug here, and plug theother end into an active wall outlet.(→ page 15)Connection for cable cover (Left/right)Screw holes temporarily fixinggrooves for the optional cable cover(→ page 114)Port Cover for Optional USBWireless LAN UnitWhen using the optional USBWireless LAN Unit, first removethe cover. (→ page 111)Terminal Panel (→ page 9)Monaural Speaker (10 W)Lamp Cover (→ page 121)Rear Foot (→ page 20)Security chain openingAttach an anti-theft device.The security chain opening acceptssecurity wires or chains up to 0.18inch/4.6 mm in diameter.Built-in Security Slot ( )** This security slot supports the MicroSaver ® Security System.