PN-Y555 (serv.man4) - Sharp Monitor User Guide / Operation Manual. Page 41

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•   When the internal temperature of the monitor rises 

excessively, the brightness of the backlight decreases 
automatically in order to prevent high-temperature-related 
problems. When this occurs, the Power LED flashes red 
and green alternately.

•   If the internal temperature rises further, the monitor 

automatically enters standby mode. (The Power LED 
continues flashing red and green alternately.) 

•   Remove the cause of the excessive temperature rise.

-  If the monitor enters standby mode due to a rise in 

temperature, to return to normal display, turn the power 
switch off and then back on again. The monitor, however, 
will enter standby mode again if the cause of the 
temperature rise is not eliminated. (See page 8.)

-  Check whether the monitor is placed at a location where 

a quick rise in temperature is likely. Internal temperature 
rises quickly if the vents on the monitor are blocked.

-  Internal temperature rises quickly if dust accumulates 

inside the monitor or around the vents. Remove dust if 
possible. Ask SHARP dealer about removing internal dust.