17" LCD Color Monitor
Dell SE178WFPC
46
9.2.2 Power/Inverter Board
No power
Check bridge rectified circuit and F901 circut
1) Check IC901
2) Check C908, D901, R909…OVP circuit
Check CN902 pin3, 4 = 5V
Check the voltage of C907(+)
Check start voltage for the pin3 of IC901
Check R904,R932,R933 and Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
NG
NG
NG
Check D905,D906,L904,ZD902,Q903,IC903,IC904,……
Check IC901 pin8 PWM wave
Check IC901
,
ZD905
NG
OK
NG
OK
OK
OK
OK
Check AC line volt 110V or 220V
Check AC input
Summary of Contents for SE178WFPC
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Page 38: ...17 LCD Color Monitor Dell SE178WFPC 38 8 2 Power Board ...
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Page 41: ...17 LCD Color Monitor Dell SE178WFPC 41 8 3 Key Board ...
Page 54: ...17 LCD Color Monitor Dell SE178WFPC 54 12 Exploded View ...