900-Lumen LED Projector Manual
Page 11 of 14
In order to display your picture as accurately as possible, you must ensure the
projector is aimed directly central to the screen. Otherwise, a 'keystone' effect may
occur. You can normalize the image by first ensuring the projector is aimed centrally
to the screen, and its beam is perpendicular to the screen, then using the built-in
keystone feature.
KEYSTONE CORRECTION:
Vertical Direction
Find keystone correction dial, and turn it left or right to find the best position to
achieve such an effect as shown in the figure to the right after correction. If you fail
to obtain this effect after turning completely to the left or the right, you should make
attempts toward leveling the projector more.
The range of keystone Correction of the projector is +/-15°.
Horizontal Direction
In this case, keystone correction dial is in an invalid state.
The reasons are as follows:
1.The projector is not placed in a horizontal position; you should place it in a more
horizontal position.
2.The projector is not aimed directly at the screen; you should attempt to make the
projector aim perpendicularly to the screen.