Dell Daily Deal E1909W Manual de serviço - Página 13
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and send control signals(at 73,109pin) to on CCFL and switch 5.0v to panel module, at the same
time,U105 make the VGA/DVI cable input signal source display normal on panel if the VGA/DVI
cable input signal is active
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If power ON, U105 #123 (LED_blue) will send out low potential, and then LED blue on.
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If power saveing, U105 #124 (LED_Amber) will send out low potential, and then LED Amber on.
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If power ON or power saveing, when press power key, U105 #4 receives low pulse, then U105 will be
sleeping and turn off backlight, at the same time, the panel will lose +5V.
The Panel_Vcc, Backlight_En, CLK/DATA output to panel will follow the following sequency.
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Service Manual