1055. Using On-Screen M enu[GEOMETRIC CORRECTION]KEYSTONEDisplay the trapezoid correction screen and adjust the trapezoidal distortion of the projection screen.To display the [KEYSTONE] screen, select → [DISPLAY] → [GEOMETRIC CORRECTION] → [KEYSTONE] in theon-screen menu. The [GEOMETRIC CORRECTION] screen can also be displayed by pressing the 3D REFORMbutton on the remote control.HORIZONTAL ��������� Adjustments when projecting from a diagonal direction to thescreen�VERTICAL �������������� Adjustments when projecting from the top or bottom direction tothe screen�TILT ����������������������� Adjusts the distortion when performing trapezoidal correction with the screen moved in the vertical directionusing the lens shift�THROW RATIO������� Adjusts according to the projection ratio of the optional lens used�Model name of lensunitAdjustment rangeNP16FL 7–8NP17ZL 12–18NP18ZL 17–23NP19ZL 21–37NP20ZL 34–55NP21ZL 50–85NP31ZL 7–10NP39ML 4NOTE:• When power is supplied to the device, the adjustment value of the [KEYSTONE] used previously is retained even if the gradientof the device is changed.• When clearing the adjustment value of [KEYSTONE], press the 3D REFORM button for 2 or more seconds.• When setting other [GEOMETRIC CORRECTION] functions, the [KEYSTONE] menu cannot be selected. When performing trapezoidalcorrection, press the 3D REFORM button for 2 or more seconds to clear the adjustment value of [GEOMETRIC CORRECTION].• As electrical correction is carried out by [KEYSTONE], the brightness may be reduced or the screen quality may deterioratesometimes.