Philips 191EW9FB/00 - Page 39

HUDSON 9
39
11.2. Power/Inverter Board
(1) No power
Check CN902 Pin4, 5 = 5V
Check AC line volt 110V or 220V
Check AC input
Check the voltage of C907 (+)
Check bridge rectified circuit and F901 circuit
Check start voltage for the pin3 of IC901
Check R904, R932, R933 and Change IC901
NG
Check the auxiliary voltage is bigger than
16V and smaller than 32V
1) Check IC901
2) Check R909, D901 circuit
OK
OK
NG
Check Q901, D903, IC902, IC903, D915, D916, D921, D922
OK
Check IC901 pin8 PWM wave
OK
Check IC901
NG
NG
NG
OK
NG