20" LCD Color Monitor
Dell E207WFP
39
8.2.2 Power/Inverter Board
No power
Check bridge rectified circuit and F901 circut
1) Check IC901
2) Check IC903, D901, C906…OVP circuit
Check CN902 pin3, 4 = 13V
Check the voltage of C903(+)
Check start voltage for the pin3 of IC901
Check R9039,R904,R905 and Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
NG
NG
NG
Check Q900, R916, T901, D920, D921,
IC921,IC902, L921, L922, ZD922, ZD921
Check IC901 pin8 PWM wave
Check IC901
NG
OK
NG
OK
OK
OK
OK
Check AC line volt 110V or 220V
Check AC input
Summary of Contents for E207WFP
Page 30: ...20 LCD Color Monitor Dell E207WFP 30 7 PCB Layout 7 1 Main Board ...
Page 31: ...20 LCD Color Monitor Dell E207WFP 31 ...
Page 32: ...20 LCD Color Monitor Dell E207WFP 32 7 2 Power Board ...
Page 33: ...20 LCD Color Monitor Dell E207WFP 33 ...
Page 34: ...20 LCD Color Monitor Dell E207WFP 34 7 3 Key Board ...
Page 48: ...20 LCD Color Monitor Dell E207WFP 48 2 Select Commands Batch ...
Page 50: ...20 LCD Color Monitor Dell E207WFP 50 11 Exploded View ...
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