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3. TROUBLE SHOOTING
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3.7.2.3 Checking RF signal path
L1108
DNI
Termination_Port
GND2
Coupling
LDJ188
FL1103
6
5
4
L1109
0.5p
C1110
1.5n
ANT
RX
TX
GND1
GND6
GND2
GND5
GND3
GND4
FL1203
7
5
8
4
9
2
3
1
6
L1208
DNI
L1204
1n
C1206
33p
L1209
0.5p
C1211
3n
33p
C1210
L1205
0.5p
C1306
33p
DNI
L1303
C1307
2.7n
2.7n
C1312
1p
L1323
DN
I
L1322
TP2(C1211)
TP1(C1101)
TP4(C1312)
TP5(C1306)
TP3(L1204)
4. Trouble Shooting
4. 7. LTE RF Part
4 7 2 LTE B3 TX/PRX
4. 7. 2. LTE B3 TX/PRX
4. 7. 2. 3.
Checking RF signal path
Test Point
TP5
U1500
U1300
TP3
TP2
TP1
TP4
FL1201
FL1103
FL1203
Circuit Diagram
TP1(C1101)
TP2(C1211)
TP3(L1204)
FL1103
55
TP5(C1306)
TP4(C1312)