Sony PCG-XG29 Manual

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VAIO® Notebook User Guide
  
Handling the LCD Screen
Do not leave the LCD facing the sun as it can damage the LCD. Be 
careful when using the computer near a window.
Do not scratch the LCD or exert pressure on it. This could cause 
malfunction.
Using the computer in low temperature conditions may produce a 
residual image on the screen. This is not a malfunction. When the 
computer returns to normal temperature, the screen returns to 
normal.
The screen becomes warm during operation. This is normal and does 
not indicate a malfunction.
The LCD is manufactured using high-precision technology. You may, 
however, see tiny black points and/or bright points (red, blue, or 
green) that continuously appear on the LCD. This is a normal result 
of the manufacturing process and does not indicate a malfunction.