Acer X173 - Page 37

37
5. No Backlight
Check C802 (+) =12V
Change FB801,Q805 Q808, Q810
Check ON/OFF signal
Check Interface board
Check IC801 pin12=12V?
Change Q805.Q808 or Q810
Check the pin9&10 of IC801 have PWM wave
Change Q801/Q804/Q811/Q812
Re
p
lace IC801
Check the resonant wave of
pin6 & pin1 for PT801, PT802
Check the output of PT801, PT802
Check Q802/Q803
Check connecter & lamp
OK
Change PT801,PT802
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NM
OK