Philips 220E1SB/00 - Page 42

42
Meridian 1
11.2. Power/Inverter Board
(1) No power
Check ZD901 ＝16V
Check AC line volt 100V or 240V
Check AC input
Check the voltage of C907 (+)
Check bridge rectified circuit and F901 circuit
Check start voltage for the pin8 of IC901
Check R908 and Change IC901
NG
Check the auxiliary voltage is bigger
than 16V and smaller than 32V
1) Check IC901
2) Check R913, D904 circuit
OK
OK
NG
Check Q901, D907, IC902, IC903, D901, D906
OK
Check IC901 pin5 PWM wave
OK
Check IC901
NG
NG
NG
OK
NG