
To eliminate image distortion using keystone correction on your EX51U projector, follow these steps: First, press the "Menu" button on your remote or the projector's control panel to open the main menu. Next, use the arrow keys to navigate to the "Image" or "Setup" menu. Then, select the "Keystone" or "Keystone Correction" option. Now, employ the arrow keys to fine-tune the vertical or horizontal keystone settings until the projected image is perfectly squared. Finally, press the "Enter" or "OK" button to confirm and save your adjustments. Exit the menu by pressing the "Menu" button again. For visual aids and more detailed instructions, consult the user manual that came with your Mitsubishi EX51U projector.


