Samsung SP-L331 - Manual (Page 16)

2-6 Installation and Connection
2-6 Adjusting the H-Keystone and V-Keystone
If you install the projector below the center line of the screen (near the ceiling or on the floor, for example), the angle at which the
projector is set to the screen causes the image it projects to be distorted.
and adjust for the angle at which the projector is set to the screen so that the shape of the image
displayed by the projector appears rectangular.
To set the the and , follow these steps:
1. Turn on the projector, and then press the Menu button on the projector or the remote control.
2. Select Setup, and then press Enter.
3. Make sure that Install at the top of the menu is set to the correct installation position: , ,
Floor>, or .
4. Select , and then press Enter.
5. Select , and then press Enter.
6. Press the Left or Right arrow key to set to 0.
7. Press the Up or Down arrow key to select . Set to 0.
8. Return to the Menu, select Test Pattern, and then press Enter.
9. Select Cross Hatch, and then press Enter.
10. Attach a string to the screen and make sure it hangs straight down.
11. Adjust the location of the projector until the string (1) and the center vertical line(2) in the Cross Hatch image are parallel.
Screen : (1) A virtual vertical line made on the screen using a piece of thread, etc.
Crosshatch Test Pattern : (2) A vertical line in the middle of the Test Pattern