5.Adapter/Inverter Board No power
No power
Check CN902 Pin3~7 = 24 V
OK
NG
Check AC line volt 120V or 220V
NG
OK
Check the voltage of C914 (+)
OKNG
Check Interface board
Check F901,NR901,power cable
Check bridge retified circuit
Check start voltage for the Pin6 of IC903
NG | Change IC903,IC951,ZD901,Q903,Q904,PS_ON | ||
OK | |||
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Repearing the start voltage | |||
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Check T901,T902,IC901,IC902,Q901,Q902 |
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NG
OK
ReplaceT901,T902,IC901,IC902,Q901,Q902 Check OLP circuit
Check D953, IC955,IC954,C964,C965,C966,IC950,IC953,ZD950,Q950
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