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Flow Chart of Troubleshooting
9-23
C123
C110
C119
C111
6
6
C107
1
1
2 2
3
3
4
4
5
5
C128
GH71-06625A
ANT101
C129
C102
L101
C115
C124
C112
L104
L110
C116
C103
C114
+VDD_RX_TX_2.8V
C106
1 1
2
2
3
3
4
4
5
5
6
6
PCS-RX2
14
VC1
VC2
10
ANT100
GH71-06625A
16
G G
18
G
19 20
G
GSM850-RX1
1
2
GSM850-RX2
7
PCS-RX1
8
DCS-RX1
DCS-RX2
6
DCS|PCS-TX
15
3
EGSM-RX1
EGSM-RX2
4
EGSM|GSM850-TX
17
G
9 12
G G
13
VMODE
VRAMP
6
HWXR874-1
F100
ANT
11
5
19
20
GND
GND
21
7 GSM_RFIN
GSM_RFOUT
11
3 TX_EN
4 VBATT
VBIAS
8
5
GND
9
GND
GND
10
GND 13
GND 14
15
GND
GND
16
18
GND
GND
AWT6172
U100
2
BNAD_SEL
1 DCS|PCS_RFIN
DCS|PCS_RFOUT
17
12
VDD5
10
VIO
XDIV
30
XEN
36
29
XMODE
X
O
U
T
8
XTAL1
35
XTAL2
34
19
_P
D
N
9
_R
E
S
_S
E
N
1
21
R
F
IP
N
R
F
IP
P
20
17
RFOH
RFOL
15
3
S
C
LK
2
S
D
IO
VDD1
33
VDD2
32
VDD3
11
VDD4
12
16
18
NC1
39
38
NC2
RAMPIN
13
14
RAMPOUT
27
R
FI
A
N
26
R
F
IA
P
23
R
FI
D
N
R
F
ID
P
22
R
F
IE
N
25
R
F
IE
P
24
AERO4221HN/1
31
AFC
B
IN
6
7
B
IP
4
B
Q
N
B
Q
P
5
28 GND
GND1
37
NC
C100
U101
C132
L109
C108
C109
C118
C127
C125
C122
C117
C104
C126
R105
C105
C113
C121
+VCC_SYN_2.8V
L102
R104
+VDD_RX_TX_2.8V
L105
R103
4
GND2
1
HOT
HOT
3
L107
L108
3.9PF
TSX-3225(TN4-26412)
OSC100
GND1
2
L106
C120
RFS100
KMS-515
A
2
3
C
G
1
G
4
C101
L100
PON_PA
DPCS_TX
GSM_TX
VBAT
MODE_SELECT
BAND_SEL
RAMP
AFC
REF_ON
RFIC_RESET
DPCS_TX
GSM_TX
VC2
VC1
CAMERA_CLK26M
+VDD_IO_LOW_1.8V
PON_3587_SYNTH
RX_TX_IN
RX_TX_IP
RX_TX_QN
RX_TX_QP
RF_CLK
RF_DATA
RFIC_RESET
RF_EN
D_REF_CLK
ONBOARD-CLIP-1
SC5
1
1
2 2
3 3
SC6
ONBOARD-CLIP-1
1 1
2
2
3
3
ONBOARD-CLIP-1
SC3
1
1
2 2
3 3
SC2
ONBOARD-CLIP-1
1 1
2
2
3
3
SC4
ONBOARD-CLIP-1
1 1
2
2
3
3
SC1
ONBOARD-CLIP
1 1
2
2
3
3