Trouble Shooting - HP W2007 Servise Manual

20" LCD Color Monitor

9.2 Trouble Shooting

9.2.1 Main Board
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 U702 PIN 2=1.8V
U701 PIN 2 = 3.3V
OK
X201 oscillate waveforms are
normal
NG
OK
Replace U401
NG
NG
Measure CN401
Replace X201
31
HP W2007&W2007v
Reinsert or check the
power section
NG
Check power section
OK
Replace U702/U701