4. TROUBLE SHOOTING
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LGE Internal Use Only
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Only for training and service purposes
CHECKING FLOW
A condition is good?
START
Check of Wifi Ant condition
NO
YES
YES
Wifi will
work properly
Check condition of
matching components
C818,C819(TP1,TP2)
A condition is good?
NO
YES
Give the additon solder in
(C818,C819,C815)
Replace Ant701,Ant702
Check Bias Voltage
VDD_IO_1V8
YES
NO
Replace
U802
Check RTC32K
R806
YES
NO
Replace
U802
Check XTAL
C825
NO
Replace
X801
(TP1, TP, C815)