LG LG-D855 - Checking RF LTE SP4 T Switch (B7); Checking RF Signal Path (B7)

3. TROUBLE SHOOTING
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Only for training and service purposes
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3.7.1.4 Checking RF LTE SP4T switch (B7)
Refer to 3.4.2
3.7.1.5 Checking RF signal path (B7)
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TP2
TP1
FL1600
DNI
L1607
FL1600
2655MHz
7
6
5 9
3 8
2
1
4
ANT
TX
GND1
GND5GND2
GND6GND3
GND4
RX
L1606
100p
L1610
0.75p
0.5p
L1611
L1608
3.3n
1.5n
L1754
2
1
8.2p
C1753
L1753
100p
12
100p
C1857
12
C1603
1.5n
ANT_TRX_B7
WTR_B7_PRX_HB3
TP2
TP1