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Flow Chart of Troubleshooting
9-33
C111
C110
C100
R100
C113
VRF_2.9V
VRF_1.5V
C101
C105
C103
2
3
4
1
OSC100
VDD1
5
FSYS3
6
FSYS2
7
VDD2
8
XO
9
B
3
F
E
R
R
0
3
6
D
D
V
1
3
D
N
G
2
3
D
N
G
3
3
C
N
4
3
C
N
5
3
BX
4
21
RX2
22
23
RX2X
RX1
24
25
RX1X
VDD4
26
2
X
T
7
2
1
X
T
8
2
5
D
D
V
9
2
A
D
5
1
N
E
6
1
RX4
17
18
RX4X
RX3
19
AX
2
RX3X
20
GND
A
1
XOX
10
D
N
G
1
1
1
S
Y
S
F
2
1
3
D
D
V
3
1
K
L
C
4
1
RFT100
C104
C116
VRF_1.5V
VRF_2.9V
C102
SBCK
SBDT
SBST
BT_CLK
DPCS_TX_IN
GSM850_RX_N
GSM900_RX_N
GSM900_RX_P
DCS_RX_N
RTX_I_N
PCS_RX_N
RTX_I_P
GSM_TX_IN
CLK26M_DBB
PCS_RX_P
GSM850_RX_P
DCS_RX_P
RTX_Q_N
RTX_Q_P
VBAT
L114
C120
C121
C107
L105
12
13
RX3
RX4 14
TX_EN
4
03
T
T
A
B
V
VLOGIC
2
3
VRAMP
G
G
0
1
5
1
G
G
6
1
G
8
1
G
9
1
27
GSM_IN
11
RX1
RX2
G
G
2
3
7
G
3
3
G
G
4
3
G
5
3
G
6
3
G
8
9
0
2
1
2
G
G
2
2
3
2
G
G
4
2
G
5
2
G
6
2
G
8
2
1
3
71
T
N
A
5
BS1
BS2 6
DCS|PCS_IN
29
1
G
G
C112
PAM100
2
1
L121
G G
3
G
510
G
CDMA_OUT 6
7
CDMA_OUT
CDMA_IN
4
1 EGSM_IN
EGSM_OUT 8
9
EGSM_OUT
2
L107
F100
L104
C123
C114
2
C
1
G
3
G
4
RFS100
A
L102
C108
L115
L108
L106
L110
C115
C136
C119
R104
C122
L112
1 GSM1900_IN
8
GSM1900_OUT
GSM1900_OUT 9
2
G
G
3
G
5
0
1
G
4 GSM1800_IN
6
GSM1800_OUT
GSM1800_OUT 7
F101
L103
L111
C118
L113
C124
L101
1
2
L100
SGHG770-ANT
ANT100
C106
VR100
NC
L109
PCS_RX_P
BAND_SEL2
BAND_SEL1
DPCS_TX_IN
PAM_VLOGIC
GSM_TX_IN
PAM_ON
PAM_VRAMP
GSM850_RX_P
GSM850_RX_N
GSM900_RX_N
GSM900_RX_P
DCS_RX_N
DCS_RX_P
PCS_RX_N