Ensure the Auto Keystone feature is “ON” 

1. Go to Settings > Image Settings > Auto Keystone 

2. Press < or > to select:

• ON: Automatically adjusts the Keystone number. 
• OFF: Manually adjusts the Keystone number.

Auto Keystone can be turned off by pressing the Up or Down buttons on the remote control. This will turn Auto Keystone to Manual Keystone adjusting.