Lanix LX700B - Page 51

17"& 19” LCD Color Monitor LANIX LX700B&LX900B
51
2.) W / LED, No Backlight
Check CN902 pin3, 4 = 5V
NG
OK
Check adapter or MB
Check ON/OFF signal
Check Interface board
NG
OK
Check IC801 PIN12=16V
pin9=12vvoltage of C905(+)
NG
OK
Change Q801
Check IC801 PIN10, 9 have the output of square wave at short
time
NG
OK
Change IC801
Check Q804, Q809PIN5, 6, 7, 8 have the output of square wave at short time.
NG
OK
Check Q804, Q805, Q806, Q809, Q810, Q811
Check the output of T801, T802
Check connecter & lamp
OK
NG
Change T801, T802