Trouble Shooting; Main Board - HP S17X Service Manual

17" LCD Color Monitor

9.2 Trouble Shooting

9.2.1 Main Board

1、No power
No power
Press power key and look if the
picture is normal
NG
Please reinsert and make sure the
AC of 100-240 is normal
OK
Measure U202 PIN 2=3.3V
OK
X401 oscillate waveforms are
normal
NG
OK
Replace U401
NG
NG
Measure CN201 PIN5/6=12V?
Measure CN201 PIN9/10=5V?
Replace X401
Check power section
33
Reinsert or check the
power section
NG
HP VS17X