Casio XJ-A240 User Guide - Page 17

Getting Ready Adjusting the Projector Elevation Angle You can change the elevation angle of the projector in a range of 0 to 20 degrees. You can also make fine adjustments to the left and right side elevation angle when necessary. To change the projector elevation angle 1. Lift up the front of the projector and press the release button .  This causes the elevation adjustment foot  to drop from the bottom of the projector.  Be sure to press the release button before trying to lower the elevation adjustment foot. Pulling on the foot without pressing the release button can damage the foot. 2. While holding down the release button, raise and lower the front of the projector until the elevation adjustment foot is approximately the length you need. 1 2 3 3. Release the release button to lock the elevation adjustment foot in its current position. 4. Use the left and right adjustment feet  to further fine adjust the elevation angle.  The left and right adjustment feet are for fine adjustment only. Do not try to rotate them too far. Doing so can cause an adjustment foot to detach. Tightening an adjustment foot too strongly can cause it to become stuck. Important!  To retract the elevation adjustment foot, hold down the release button and slide the elevation adjustment foot back into the projector. Never try to forcibly change the elevation adjustment foot position without pressing the release button. E-16