Lanix LX700B - Page 46

17"& 19” LCD Color Monitor LANIX LX700B&LX900B
46
(2). No Picture
No picture
The button if
under control
Replace U401
Replace X401
Measure U404 PIN2=3.3V
Q409 V
collector
=1.8V
Check Correspondent
component
Replace U401
X401 oscillate
waveform is normal
Check U404, Q409 and Q410
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal
Check HS VS from
CN101 is normal
Replace X401
Check Correspondent
component
NG
NG
OK
Replace U401
X401 oscillate
waveform is normal