Trouble Shooting; Main Board - HP FP1707 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 U401VDDP PIN 32=3.3V
VDDC PIN34 = 1.8V
OK
X201 oscillate waveforms are
normal
NG
OK
Replace U401
NG
NG
Measure CN902 PIN3/4=5V?
Replace X201
30
Reinsert or check the
power section
NG
Check power section Check power section
Replace U702,U701
HP FP1707