Dell E173FP Service Manual page 32

8.2.2 Power/Inverter Board
1.) No power
Check to CN102 Pin9 and
Check AC line volt 120V or 220V
Check the voltage of C904(+)
Check start voltage for the pin3 of IC901
Check the auxiliary voltage is smaller than 20V
Check R919, D910,D911,D912,D913, ZD904
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pin10 = 5V
OK
NG
NG
OK
NG
OK
NG
Repeating the start voltage
OK NG
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DELL E173FP Service Manual
Check Interface board
Change F901 , check BD901,Q903,IC901
Check bridge rectified circuit cFailure point
Change IC901
1) Check IC902, IC903
2) Check Q901,Q902...OVP circuit
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