Sony Vajo VGC-LT20 Series User Manual page 12

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Before Use
D Viewing angle of the display - Use the display's tilting feature to find the best position. You can reduce eye strain and
muscle fatigue by adjusting the tilt of the display to the proper position. Adjust the brightness level of the display as well.
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While adjusting the viewing angle, do not exert excessive pressure on your computer, especially on the center of the speaker grill, to eliminate a risk of
mechanical damage.
D Lighting - Choose a location where windows and lights do not cause glare and reflection on the display. Use indirect
lighting to avoid bright spots on the display. Proper lighting adds to your comfort and work efficiency.
D Ventilation - Make sure you leave at least 4 inches (10 em) of space behind and at least 8 inches (20 em) of space on
each side of the main unit.