17" LCD Color Monitor
Dell E178FPC
52
9.2.2 Power/Inverter Board
No power
Check bridge rectified circuit and F901 circut
1) Check IC901
2) Check C911, D901, R910…OVP circuit
Check CN902 pin3, 4 = 12V
Check the voltage of C907(+)
Check start voltage for the pin8 of IC901
Check R905 and Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
NG
NG
NG
Check D920,L921,ZD920,C922-C925,……
Check IC901 pin5 PWM wave
Check IC901,Q900
NG
OK
NG
OK
OK
OK
OK
Check AC line volt 110V or 220V
Check AC input
Summary of Contents for E178FPC
Page 41: ...17 LCD Color Monitor Dell E178FPC 41 8 PCB Layout 8 1 Main Board ...
Page 42: ...17 LCD Color Monitor Dell E178FPC 42 ...
Page 43: ...17 LCD Color Monitor Dell E178FPC 43 ...
Page 44: ...17 LCD Color Monitor Dell E178FPC 44 8 2 Power Board ...
Page 45: ...17 LCD Color Monitor Dell E178FPC 45 ...
Page 46: ...17 LCD Color Monitor Dell E178FPC 46 ...
Page 47: ...17 LCD Color Monitor Dell E178FPC 47 8 3 Key Board ...
Page 60: ...17 LCD Color Monitor Dell E178FPC 60 12 Exploded View ...