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Checking Flow
START
Check the TP1.
Does the signal exist?
Yes
Check WCN3680
(U5100)
physical damage
or soldering condition
Yes
Change MAIN Board.
LGE Internal Use Only
LGE Internal Use Only
NO
Check the components
around Ear-jack(FM ant)
NO
Check the components
around Antenna
Image
Circuit Diagram
35
3. TROUBLE SHOOTING
WCN
3680B
TP1
Copyright ⓒ 2016 LG Electronics. Inc. All right
Copyright ⓒ 2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
reserved. Only training and service purposes
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