Panasonic PT-AX100U User Manual

In order to get the best picture quality
  Draw curtains or blinds over any windows and turn 

off any lights near the screen to prevent outside light 
or light from indoor lamps from shining onto the 
screen.

Do not touch the surfaces of the lens with your bare 
hands.
  If the surface of the lens becomes dirty from 

fingerprints or anything else, this will be magnified 
and projected onto the screen. Moreover, when not 
using the projector, cover it with the lens cover.

Screen
  Do not apply any volatile substances which may 

cause discoloration to the screen, and do not let it 
become dirty or damaged.

Lamp
  The lamp may need to be replaced earlier due to 

variables such as individual lamp characteristics, 
usage conditions and the installation environment, 
especially when the projector is subjected to 
continuous use for more than 10 hours or the power 
is frequently turned on and off.

Liquid crystal panel
  Do not project the same image for long periods of 

time, as this may remain as an afterimage on the 
liquid crystal panel.

  The liquid crystal panel of the projector is built with 

very high precision technology to provide fine picture 
details. Occasionally, a few stuck pixels may appear 
on the screen as fixed points of blue, green or red. 
Please note that this does not affect the performance 
of your LCD.