Acer AL1516 - Page 36

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Power Board
4. No Power
Check AC line Volt 110V or 220V
OK
Check AC line
Check the voltage of C905(+)
Check F901, bridge rectified circuit
Check start voltage for the pin3 of IC901
Check R906, R907,IC901
Check the auxiliary voltage is between 10V-16V
Check IC902,IC903
Check Q901, Q902, ZD901 circuit
OK
Check D910, D912
OK
NG
No power
NG
NG
OK
NG