22" LCD Color Monitor ASUS MW221C
38
8.2.2 Power/Inverter Board
1.) No power
Check CN902 pin4, 5 = 12V
Check AC line volt 110V or 220V
Check AC input
Check the voltage of C907 (+)
Check bridge rectified circuit and F901 circuit
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
1) Check IC901
2) Check R910, D901 circuit
OK
OK
NG
Check D910, Q900, D900, IC902, F902, ZD921, ZD922, D915, D916
OK
Check IC901 pin5 PWM wave
OK
Check IC901
NG
NG
NG
OK
NG
Summary of Contents for MW221C
Page 7: ...22 LCD Color Monitor ASUS MW221C 7 3 2 2 Key Function ...
Page 9: ...22 LCD Color Monitor ASUS MW221C 9 ...
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Page 14: ...22 LCD Color Monitor ASUS MW221C 14 4 4 3 Optical Characteristics ...
Page 15: ...22 LCD Color Monitor ASUS MW221C 15 4 4 4 Electrical Characteristics 1 TFT LCD 2 Backlight ...
Page 28: ...22 LCD Color Monitor ASUS MW221C 28 7 PCB Layout 7 1 Main Board 715G2186 3 ...
Page 29: ...22 LCD Color Monitor ASUS MW221C 29 ...
Page 30: ...22 LCD Color Monitor ASUS MW221C 30 7 2 Power Board 715G2594 1 ...
Page 31: ...22 LCD Color Monitor ASUS MW221C 31 ...
Page 32: ...22 LCD Color Monitor ASUS MW221C 32 ...
Page 33: ...22 LCD Color Monitor ASUS MW221C 33 7 3 Audio Board 715G2709 1 3 7 4 Key Board 715G2099 1 ...
Page 43: ...22 LCD Color Monitor ASUS MW221C 43 10 Monitor Exploded View ...