Power Led Amber - Dell E190Sf Service Manual

3. Power LED Amber

Is Power LED Amber?
Do the Hsync. & Vsync. Signals exist
in CN301 #13& #14 separately?
Do the Hsync. & Vsync. Signals exist
in R310 & R311?
Do the Hsync. & Vsync. Signals exist
in U401 #89 & #90?
Is the frequency 14.318MHz at #109
YES
YES
YES
YES
of U401?
YES
Change U401
END
NO
Insert VGA Cable correctly
NO
Check R310 & R311
NO
Change R310 & R311
NO
Change X401
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Service Manual