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ANT100
R101
NA
R199
0
1p
C101
ANT_SEL0
ANT_SEL1
ANT_SEL2
VREG_RFRX_1_2.85V
TP2
Near to Tx Path
U105
R129
IN
COUP
2
3
68
OUT
50OHM
1
4
C170
33p
R130
51
HDET
L122
NA
C173
NA
RFIN
VOPS VRMS
L125
33p
VREG_RFTX_2.85V
ADL5500
C174
100p
FL103
SAYZY1G95EA0B00
2
5
ANT
RX
7
BIAS
TX
1
3
GND1
GND6
4
6
GND2
GND5
8
9
GND3
GND4
L127
C182
2.7nH
33p
C184
1.2p
TP3
OUT100
ANT101
L101
KMS-507
SW100
G2
ANT
RF
G1
2.7nH
L102
NA
C105
C106
C107
33p
33p
33p
L111
10nH
+VPWR
C166
C164
C167
C168
C169
NA
100p
0.01u
NA
10u
COMM
HDET1
U106
C175
1200p
L126
100nH
C185
680p
VREG_RFRX_0_2.85V
- 95 -
4. TROUBLE SHOOTING
TP1
33p
C102
L103
100nH
FL100
LMSP54MA-543
GSM900_RX1
14
VC1
GSM900_RX2
15
VC2
16
VC3
GSM1800_RX1
GSM1800_RX2
13
VDD
GSM1900_RX1
1
GND1
GSM1900_RX2
2
GND2
4
GND3
GSM1800_1900TX
5
GND4
GSM900TX
8
GND5
UMTS2
10
GND6
UMTS1
12
C109
GND7
17
0.01u
GND8
PIN_DIREC1
18
GND9
PIN_DIREC2
2110-2170 MHz
VREG_RFRX_0_2.85V
C176
C177
0.1u
100p
13
PLNA_OUT
14
ILNA_OUT
15
PLNA_BIAS
16
PLNA_IN
17
ILNA_BIAS
18
ILNA_IN
19
VDDRF3
20
RX_IP
RX_IP
21
C186
C187
RX_IM
RX_IM
22
0.1u
100p
RX_QP
RX_QP
23
RX_QM
RX_QM
24
VDDA2
C189
C190
4.7u
100p
R138
10
C194
100p
19
20
21
22
23
24
3
6
7
9
25
26
TP4
L119
3.9nH
SAW FILTER(SFSY0025601)
FL102
3
2
R131
O1
G1
L120
L121
1
IN
12nH
NA
O2
G2
0
B7827
4
5
L124
3.9nH
C179
C180
C181
100p
10p
0.1u
49
PGND
48
GLNA_BIAS
47
GLNA_IN
R132
46
R_BIAS
45
(1%)
11K
VDDA8
44
EUSY0246002
SBST
43
RFR6250E
SBDT
42
SBCK
R134
U107
41
VDDM
40
GRX_IP
C188
100ohm
39
0.01u
GRX_IM
38
GRX_QP
37
R137
GRX_QM
C191
C192
100p
1u
C195
C193
33p
RX_VCO_IN
0.1u
CP2_OUT
C196
1000p
C172
6.8p
L123
1.8nH
VREG_T
10u
C178
SBST
SBDT
SBCK
VREG_MSM
10
VREG
VRE
TCXO_O
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Table of Contents
Troubleshooting
