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17" LCD Color Monitor AOC
177Sa
37
8.2.2 Power/Inverter Board
(1) No power
Check CN902 pin3/4 = 12V
Check AC line volt 110V or 220V
Check AC input
Check the voltage of C910 (+)
Check bridge rectified circuit and F901 circuit
Check start voltage for the pin8 of IC901
Check R911, C910 and Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
1) Check IC901
2) Check IC901 over current protect circuit
OK
OK
NG
Check Q900, D916, D915, ZD921, ZD922, IC902 and T901
OK
Check IC901 pin5 PWM wave
OK
Check IC901
NG
NG
NG
OK
NG
Summary of Contents for 177sa
Page 12: ...17 LCD Color Monitor AOC 177Sa 12 4 4 3 Optical Characteristics ...
Page 26: ...17 LCD Color Monitor AOC 177Sa 26 7 PCB Layout 7 1 Main Board 715G1558 2 2 ...
Page 27: ...17 LCD Color Monitor AOC 177Sa 27 ...
Page 28: ...17 LCD Color Monitor AOC 177Sa 28 ...
Page 29: ...17 LCD Color Monitor AOC 177Sa 29 7 2 Audio Board 715G1841 1 ...
Page 30: ...17 LCD Color Monitor AOC 177Sa 30 7 3 Power Board 715G1823 2 ...
Page 31: ...17 LCD Color Monitor AOC 177Sa 31 ...
Page 32: ...17 LCD Color Monitor AOC 177Sa 32 7 4 Key Board 715G1819 1 2 ...
Page 42: ...17 LCD Color Monitor AOC 177Sa 42 10 Monitor Exploded View ...