Trouble Shooting - AOC HP L1906 Service Manual

19" LCD Color Monitor

9.2 Trouble Shooting

9.2.1 Main Board
No power
Please reinsert and make sure the
AC of 100-240 is normal
Measure CN601 PIN5/6=12V?
Measure CN601 PIN9/10=5V?
X301 oscillate waveforms
are normal
No power
Press power key and look if the
picture is normal
NG
OK
OK NG
NG
OK
Replace U401
NG
Reinsert or check the
power section
Check power section
Replace X301
33
HP L1906