Dell P2210 Service Manual download pdf (Page 43)

Service Manual

Power (include IF +5V and +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 U404#22& #21

Is the Q402 work normal

Is the LED control signal at #113 of

U404 high-low convertible when DC

on/off

END

Insert VGA Cable correctly

Check R133 & R134

Change R135 & R136

Change Q402

YES

END

Change U404

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Dell P2210 Service Manual Page 43