Acer AL2051W Technical Information PDF herunterladen (Seite 37)

37

2. Power Board

No power

Check AC line volt 110V or 220V

OK

Check AC line

Check the voltage of C904(+)

Check F901, bridge rectified circuit

Check start voltage for the pin3 of IC901

Check R903, R904,IC901

Check the auxiliary voltage is between 10V-16V

Check Q902,Q903

Check T901, D902

OK

Check D904, D905,IC902

OK

NG

No power

NG

NG

OK

NG

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