19" LCD Color Monitor ASUS VW198
S
37
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 C905 (+)
Check bridge rectified circuit and F901 circuit
Check start voltage for the pin8 of IC901
Check R904, R932, R933 and Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
1) Check IC901
2) Check R909, D901 circuit
OK
OK
NG
Check IC903, IC904, Q901, ZD921, ZD922, D915, D916
OK
Check IC901 pin6 PWM wave
OK
Check IC901
NG
NG
NG
OK
NG
Summary of Contents for VW198S
Page 4: ...19 LCD Color Monitor ASUS VW198S 4 1 Monitor Specifications ...
Page 7: ...19 LCD Color Monitor ASUS VW198S 7 3 2 2 Key Function 3 3 OSD Menu 3 3 1 How to Reconfigure ...
Page 8: ...19 LCD Color Monitor ASUS VW198S 8 3 3 2 OSD Function Introduction ...
Page 9: ...19 LCD Color Monitor ASUS VW198S 9 ...
Page 10: ...19 LCD Color Monitor ASUS VW198S 10 ...
Page 12: ...19 LCD Color Monitor ASUS VW198S 12 4 3 Factory Preset Display Modes ...
Page 26: ...19 LCD Color Monitor ASUS VW198S 26 7 PCB Layout 7 1 Main Board 715G2698 3 ...
Page 27: ...19 LCD Color Monitor ASUS VW198S 27 ...
Page 28: ...19 LCD Color Monitor ASUS VW198S 28 ...
Page 29: ...19 LCD Color Monitor ASUS VW198S 29 7 2 Power Board 715G2538 3 ...
Page 30: ...19 LCD Color Monitor ASUS VW198S 30 ...
Page 31: ...19 LCD Color Monitor ASUS VW198S 31 7 3 Audio Board 715G2767 1 ...
Page 32: ...19 LCD Color Monitor ASUS VW198S 32 7 4 Key Board 715G2546 2 ...
Page 42: ...19 LCD Color Monitor ASUS VW198S 42 10 Monitor Exploded View ...