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Checking Flow
START
ANT5101, ANT5102
Check the connection
between antenna
and clip
Yes
Check the TP1, TP2, TP3
Does the signal exist?
Yes
Check the TP4
Does the signal exist?
Yes
Check the TP5
Does the signal exist?
Yes
Check the TP6
Does the signal exist?
Yes
Change MAIN Board.
LGE Internal Use Only
LGE Internal Use Only
NO
Clean the
connection parts
NO
Check the component
U5100
NO
Check the components
around U5103
NO
Check the components
around U5102
NO
Check the components
around FL5101 & FL5102
Checked components show
any physical damage
or soldering problem,
need to be replaced.
ANT5101
(signal)
TOP
TP6
(WIFI & BT
T/Rx Signal)
FL5102
TP4
(2.4GHz & BT
T/Rx)
(2.4 Rx & BT Signal)
33
3. TROUBLE SHOOTING
Image
ANT5102
(GND)
FL5101
U5102
U5103
U5100
(WCN3680)
TP2
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
BOT
TP5
(5GHz T/Rx)
TP1
(2.4 & 5GHz Tx)
TP3
(5GHz Rx)
BOT
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