LG KU950 - Page 94

4. TROUBLE SHOOTING
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ANT101
2.7nH
L101
C106
33p
C107
33p
L103
100nH
ANT
G1
G2
RF
KMS-507
SW100
9
UMTS1
UMTS2
7
VC1
14
15
VC2
VC3
16
VDD
13
5
GND4
8
GND5
10
GND6
GND7
12
GND8
17
18
GND9
GSM1800_1900TX
3
21
GSM1800_RX1
GSM1800_RX2
22
23
GSM1900_RX1
GSM1900_RX2
24
6
GSM900TX
19
GSM900_RX1
GSM900_RX2
20
25
PIN_DIREC1
PIN_DIREC2
26
FL100
LMSP54MA-543
ANT
11
1
GND1
2
GND2
GND3
4
C101
1p
C109
0.01u
VREG_RFRX_1_2.85V
C105
33p
L111 10nH
0
R199
C102
33p
L102
NA
ANT100
R101
NA
OUT100
ANT_SEL0
ANT_SEL1
ANT_SEL2
Near to Tx Path
2110-2170 MHz
SAW FILTER(SFSY0025601)
EUSY0246002
(1%)
HDET
VREG_RFRX_0_2.85V
10u
C164
R138
10
100p
C167
NA
C173
33pC193
G2
1
IN
3
O1
4
O2
FL102
B7827
2
G1
5
L124
3.9nH
C191
100p
11K
R132
+VPWR
6.8p
C172
L119
3.9nH
C195
0.1u
4
50OHM
COUP
32
IN
1
OUT
U105
L125
33p
C168
0.01u
R134
100ohm
1000p
C196
VREG_
T
VRE
G
C176
C174
0.1u
100p
VREG_RFTX_2.85V
C192
1u
NA
C166
U106ADL5500
COMMRFIN
VOPS VRMS
100p
C194
C188
0.01u
L123
1.8nH
100p
C177
100nH
L126
0.1u
VR
E
C186
C189
10p
4.7u
C180
R129
68
C179
100p
C170
33p
VREG_MS
M
L122
NA
680p
C185
L120
1200p
12nH
C181
C175
0.1u
TCXO
25
UMTS_TUNE
VDDA1
7
VDDA2
24
26
VDDA3 VDDA4
27 32
VDDA5 VDDA6
34 36
VDDA7
VDDA8
45
VDDM
41
VDDRF1
3 12
VDDRF2
19
VDDRF3
928
LO_OUT
49
PGND
15
PLNA_BIAS
16
PLNA_IN
PLNA_OUT
13
10
PMIXM
PMIXP
11
RX_IM
21
20
RX_IP
23
RX_QM
RX_QP
22
46
R_BIAS
SBCK
42
SBDT
43
44
SBST
33 31
GLNA_BIAS
48
47
GLNA_IN
1
GLNA_OUT
GMIXM
5 6
GMIXP
4
GND
GPS_TUNE
35
39
GRX_IM
40
GRX_IP
37
GRX_QM
GRX_QP
38
ILNA_BIAS
17
18
ILNA_IN
ILNA_OUT
14
8
IMIXM
IMIXP
RFR6250E
U107
BLANK
2
CP_DUMP
29
CP_OUT
30
FAQ
VREG_RFRX_0_2.85V
C187
100p
SAYZY1G95EA0B00FL103
ANT
2
1
GND1
4
GND2
GND3
8
GND4
9
6
GND5
GND6
3
RX
5
7
TX
2.7nH
L127
C169
NA
R130
51
C184
1.2p
10R137
100p
C190
NA
L121
10u
C178
0
R131
33p
C182
CP2_OUT
SBST
SBDT
SBCK
RX_QP
RX_QM
RX_IP
RX_IM
TCXO_
O
RX_VCO_IN
HDET1
TP1
TP2
TP4
TP3
BIAS