Dell E2209Wf Service Manual download pdf (Page 32)

Service Manual

Power (include IF +5Vand +3.3V) supply and display normal but

LED Amber

Is Power LED Amber?

Do the Hsync. & Vsync. Signals exist

in CN102 #13& #14 separately when

select VGA mode by OSD?

Do the Hsync. & Vsync. Signals exist

in R133 & R134?

Do the Hsync. & Vsync. Signals exist

in U105#32& #33?

Is the Q108 work normal

Is theLED control signal at 4# of

U105 high-low convertible when DC

on/off

END

Insert VGA Cable correctly

Check R133 & R134

Change R135 & R136

Change Q108

YES

Change U105

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Dell E2209Wf Service Manual Page 32