Troubleshooting
This chapter provides troubleshooting information for the G195HQ:
1.Main Board
1) No Power
Replace X401
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 U701 Pin2=3.3V, C704 (+) =1.8V
NG
OK
Check if X401 oscillate waveforms are
normal
NG
OK
Replace U401
NG
Reinsert or check the
power section
Check U701, Q702 and Q703
33
Chapter 4