22” LCD Color Monitor Topview
38
8.2.2 Power Board
No Power
Check AC line volt 110V or 220V
Check AC input
NG
OK
Check the voltage of C905(+)
Check bridge rectified circuit and F901 circuit
Check start voltage for the pin3 of IC901
Check R904, R905, R906 and Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
1) Check IC901
2) Check D900, D901 circuit
OK
OK
NG
Check Q901/Q903/IC903/IC904/ZD921/ZD922
OK
Check IC901 pin8 PWM wave
OK
Check IC901
NG
NG
Summary of Contents for A2281Wd+
Page 13: ...22 LCD Color Monitor Topview A2281Wd 13 4 3 2 Optical Characteristics Optical Specifications ...
Page 14: ...22 LCD Color Monitor Topview A2281Wd 14 ...
Page 15: ...22 LCD Color Monitor Topview A2281Wd 15 4 3 3 Electrical Characteristics TFT LCD Module ...
Page 16: ...22 LCD Color Monitor Topview A2281Wd 16 Back Light Unit ...
Page 28: ...22 LCD Color Monitor Topview A2281Wd 28 7 PCB Layout 7 1 Main Board 715G2883 1 6 ...
Page 29: ...22 LCD Color Monitor Topview A2281Wd 29 ...
Page 30: ...22 LCD Color Monitor Topview A2281Wd 30 7 2 Power Board 715G2824 2 ...
Page 31: ...22 LCD Color Monitor Topview A2281Wd 31 ...
Page 32: ...22 LCD Color Monitor Topview A2281Wd 32 ...
Page 33: ...22 LCD Color Monitor Topview A2281Wd 33 7 3 Key Board 715G2836 1 ...
Page 41: ...22 LCD Color Monitor Topview A2281Wd 41 9 Monitor Exploded View ...