3. TROUBLE SHOOTING
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3.7.7.1 Checking RF signal path
4. Trouble Shooting
4. 7. LTE RF Part
4 7 8 LTE B20 DRX
4. 7. 4. 1.
Checking RF signal path
4. 7. 8. LTE B20 DRX
Test Point
TP1
U1100
FL1105
TP2
FL1106
U1500
TP3
Circuit Diagram
TP1(C1125)
TP2(C1127)
TP3
77
TP3(L1128)
GND1
HI-BAND
COMMOM
GND3
GND2
LO-BAND
FL1106
4
3
5
2
6
1
C1162
DNI
DNI
C1163
1n
C1127
DNI
L1123
VD
D
GND
PORT
2
ANT
PORT
1
VCTL
FL1105
5
2
6
4
3
1
C1126
1n
100p
C1122
L1121
DNI
2
1
C1125
100p
C1164
1n
L114
7
DNI
C1161
DNI
WTR0_DRX_HB3_IN
33p
C1158
L1144 2.2n
TP3(C1164)
TP2(C1127)
TP1(C1125)
TP4(L1144)