R5906112 /09 UDX series1148.7.3 Warping – 4 corners adjustmentAbout 4 Corners adjustment4 corner adjustment is typically used when the mechanical installation of the projector prevents it from pointingperpendicularly at the screen. For example, you can overshoot the screen and use 4 corner adjustment to pullyour projected image corners back into the screen.Some examples:Image 8-21: 4 corner adjustmentHow to adjust the image?1. In the main menu, select Installation → Warp → 4 Corners.Image 8-22: Warp menu, 4 CornersThe 4 Corners menu is displayed.Image 8-23: 4 Corners Warping2. To enable 4 Corners warping, make sure the 4 corners slider is set to On.GUI – Installation