3. TROUBLE SHOOTING
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3.7.1.6 . Checking RF signal path (B20)
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TP2
TP1
U1500
FL1703
C1720
8.2n
33p
L1716
L1728
22n
C1719
3p
DNI
L1711
2
1
FL1703
7
5
8
4
9
2
3
1
6
ANT
RX
TX
GND1
GND6
GND2
GND5
GND3
GND4
L171
8
DNI
2
1
WTR_B17_B20_PRX_LB1
TX_B17_B20
D855-LTE20 / D855P-LTE17
TP1
TP2