39 Basic OperationNOTE:• If you press the AUTO SETUP buttonafter correcting the keystone distortionmanually, the automatic keystonecorrection function will operate and thecorrected picture will return to itsprevious incorrect condition. In addition,if you change the input signal and pressthe AUTO SETUP button, the keystonecorrection may be cancelled dependingon the type of signal and the angle of tiltof the projector. To prevent them fromhappening, you can set “AUTOKEYSTONE” in the OPTION menuto “OFF”• The greater the correction of keystonedistortion amount, the more the picturePicturecondition OperationPress thebutton.Press thebutton.Press thebutton.Press thebutton.POSITIONMoves the picture position.Press the or buttons to movethe picture horizontally.Press the or buttons to movethe picture vertically.DOT CLOCK(RGB only)Periodic striped pattern interference(noise) may occur when a stripedpattern such as the one below isprojected. If this happens, use theand buttons to adjust so thatany such noise is minimised.CLOCK PHASE(RGB only)Adjust the DOT CLOCK setting firstbefore carrying out this adjustment.Use the and buttons to adjustso that the noise level is leastnoticeable.NOTE:• If signals with a dot clock frequency of140 MHz or higher are being input,interference may not be completelyeliminated when the DOT CLOCK andCLOCK PHASE adjustments arecarried out.KEYSTONEBefore carrying out keystonecorrection, 1) adjust the forward/backangle of tilt of the projector by pressingthe adjuster buttons and 2) press theAUTO SETUP buttons to correctvertical keystone distortion. (page 27)The vertical keystone distortion willbe automatically corrected by theprojectors automatic setup function.KEYSTONE H:V:00POSITION H:V:6363However the horizontal distortion oradjustment of the tilted screen needsto be corrected manually by followingany of the procedures below.
