
19"W LCD Color Monitor HCL HCM9LWAT11
35
8.2.2 Power Board
No power
Check L903 = 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, R931, R938, Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
1) Check IC901
2) Check R909/D902 circuit
OK
OK
NG
Check Q903/D904/IC902/ZD901/ZD902
OK
Check IC901 pin5 PWM wave
OK
Check IC901
NG
NG
NG
OK
NG
Summary of Contents for HCM9LWAT11
Page 10: ...19 W LCD Color Monitor HCL HCM9LWAT11 10 4 3 Panel Specification 4 3 1 General Feature ...
Page 11: ...19 W LCD Color Monitor HCL HCM9LWAT11 11 4 3 2 Optical Characteristics ...
Page 24: ...19 W LCD Color Monitor HCL HCM9LWAT11 24 6 3 Key Board 715G2127 1 ...
Page 25: ...19 W LCD Color Monitor HCL HCM9LWAT11 25 6 4 Audio Board 715G2128 2 BJ ...
Page 26: ...19 W LCD Color Monitor HCL HCM9LWAT11 26 7 PCB Layout 7 1 Main Board 715G1558 1 BJ ...
Page 27: ...19 W LCD Color Monitor HCL HCM9LWAT11 27 ...
Page 28: ...19 W LCD Color Monitor HCL HCM9LWAT11 28 7 2 Power Board 715G1899 1 HP ...
Page 29: ...19 W LCD Color Monitor HCL HCM9LWAT11 29 ...
Page 30: ...19 W LCD Color Monitor HCL HCM9LWAT11 30 7 3 Key Board 715G2127 1 ...
Page 31: ...19 W LCD Color Monitor HCL HCM9LWAT11 31 7 4Audio Board 715G2128 2 BJ ...
Page 40: ...19 W LCD Color Monitor HCL HCM9LWAT11 40 10 Monitor Exploded View ...