LG KU730 Service Manual page 79

4. TROUBLE SHOOTING
4. 5. 3 Check RF Rx Level
Vbias
TP1
ANT100
SW100
R100
G2
ANT RF
G1
0
KMS-507
1p
C101
L502
8.2nH
TP2
C189
27p
C194
NA
G1
G2
ANT G3
G4
G5
G6
G7
C204
TP3
VREG_RFRX_1_2.85V
TP1
TP3
Test Point (RF Rx Level)
33p
C100
L101
NA
U105
RFIN COMM
VOPS VRMS
0.1u
ADL5500
C191
Vbias
ILNA_OUT
L133
12p L134 2.7nH
R143
0
C205
1.2p
C213
0.1u
TP4
C159 R126
ILNA_OUT
0
8.2p
B7827
L130
2.2nH
R135 0
HDET1
C195
1500p
100nH
C206
680p
C214
10p
- 80 -
TP2
TP4
C158 33p
L127
2.7nH
FL101
2 3
C160 0.1u
G1 O1
1 L128
IN
G2 O2 33nH
5 4
L129
2.7nH
C167 33p
13
PLNA_OUT
14
ILNA_OUT
15
PLNA_BIAS
16
PLNA_IN
17
ILNA_BIAS
18
ILNA_IN
19
RFR6250E
VDDRF3
20
RX_IP
21
RX_IM
22
RX_QP
23
RX_QM
24
VDDA2
C207 100p
R146
10
C212 4.7u
RX_QM
RX_QP
IMT_RX_P
IMT_RX_M