Please try image correction again once the image correction pattern is visible, unobscured, or unbroken throughout the correction process.
If it still does not work, please check whether Auto fit to Screen is enabled or not by going to:
Google TV home screen > All settings > Projector > Image Correction > Advanced > Auto fit to Screen
If it enabled, please turn it off and try image correction again.
If Auto Fit to Screen is required in your setup, please make sure
• Projection screen size is larger than your physical screen as the following
picture