22’’ LCD TV AOC L22W631
19
5. Repair Flow Chart
1. No Power (No LED indicator)
Check CN902 Pin
1/2 = 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 pin 8 of IC901
Check R904, R932, R933 or Change IC901
Check the auxiliary voltage is bigger than
10V and smaller than 20V
1) Check IC901, T901
2) Check C908, D902 circuit
OK
OK
NG
Check
D904/D906/Q903/ZD920/IC903/IC902
Check IC901 pin 6 PWM wave
OK
Check IC901, Q901
NG
NG
NG
OK
NG
NG
OK
Содержание L22W631
Страница 17: ...22 LCD TV AOC L22W631 17 4 Remove the shield 5 Remove the main board power board ...
Страница 18: ...22 LCD TV AOC L22W631 18 6 Remove the key board IR board speaker 7 Relax the clips to remove the bezel ...
Страница 25: ...22 LCD TV AOC L22W631 25 6 PCB Layout 6 1 Main Board ...
Страница 26: ...22 LCD TV AOC L22W631 26 ...
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Страница 28: ...22 LCD TV AOC L22W631 28 6 2 Power Board ...
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Страница 30: ...22 LCD TV AOC L22W631 30 6 3 Tuner Board 6 4 IR Board ...
Страница 53: ...22 LCD TV AOC L22W631 53 10 Exploded View ...