Samsung SGH-M310 - Page 56

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Flow Chart of Troubleshooting
10-18
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C106
L100
C104
C110
C113
C101
C105
ANT_GND
C114
R102
RFS100
A
2
C
1
3
G
G
4
R100
GSM850_OUT1
GSM850_OUT2
9
2
1
N
C
N
C
2
2
N
C
2
3
1
PCS_IN
16
PCS_OUT1
15
PCS_OUT2
G
N
D
G
N
D
5
G
N
D
7
G
N
D
1
7
1
8
G
N
D
1
9
G
N
D
2
0
G
N
D
8
GSM850_IN
10
DCS_IN
413
DCS_OUT1
DCS_OUT2
13
6
EGSM_IN EGSM_OUT1
12
11
EGSM_OUT2
G
N
D
2
4
ANT_F
F100
C109
C102
L102
C107
C112
V_BATT
C111
C108
L101
C130
C100
4
TX_EN
V
B
A
T
T
3
0
2
VLOGIC
VRAMP
3
1
6
G
1
8
G
G
1
9
GSM_IN
27
RX1
11
12
RX2
RX3
13
14
RX4
G
3
3
3
4
G
G
3
5
3
6
G
8
G
G
9
1
0
G
G
1
5
G
2
3
2
4
G
G
2
5
2
6
G
2
8
G
G
3
1
3
2
G
G
7
A
N
T
1
7
BS1
5
6
BS2
29
DCS|PCS_IN
G
1
2
0
G
G
2
1
2
2
G
PAM100
GSM_LNA_IN_P
GSM_LNA_IN_N
DCS_LNA_IN_P
DCS_LNA_IN_N
PCS_LNA_IN_N
PCS_LNA_IN_P
GSM850_LNA_IN_P
GSM850_LNA_IN_N
BAND_SEL2
VAPC
TX_EN
GSM_PAM_IN
VMOD_EN
DPCS_PAM_IN
BAND_SEL1
ANT
SPK
SIM
GSM_RX
GSM_TX
DCS/PCS_RX
DCS/PCS_TX
FM_RADIO
MAIN MIC
EAR SPK
EAR MIC
POWER ON
CLK
RF GND
CUT FILL AREA
RF GND
L
1
1
1
C
1
5
4
82R116
VRF_2.9V
47PF
50V
C133
9
VLDO3
V
C
C
_
B
B
I
4
V
C
C
_
B
B
Q
2
4
V
C
C
_
F
E
1
V
C
C
_
R
E
F
1
7
VCC_TXVCO
1
2
1
3
VDD
1
5
VLDO1
1
6
VLDO2
2
9
RX900B
6
S
C
L
K
S
D
A
T
A
5
S
E
N
7
TXOP_HI
1
1
TXOP_LO
1
0
1
8
V
A
F
C
VBAT
1
4
2
1
R
E
F
_
O
P
2
8
RX1800
RX1800B
2
7
2
6
RX1900
RX1900B
2
5
3
2
RX850
3
1
RX850B
RX900
3
0
IB
8
N
C
3
4
N
C
N
C
3
5
Q
2
3
Q
B
2
2
R
E
F
IN
2
0
1
9
R
E
F
IN
B
RFT100
GND
3
3
I
2
3
C124
C129
C140
R
1
1
1
C
1
2
2
V_BATT
C137
R110
C136
C123
C128
C131
C116
R105
VCCD_2.9V
C125
L104
C127
2
4
3
1
OSC101
R123 51
C138 C139
C117
L108
C156
DPCS_PAM_IN
GSM850_LNA_IN_N
GSM850_LNA_IN_P
26M_BT
26MHZ_DBB
AFC
GSM_PAM_IN
PCS_LNA_IN_N
PCS_LNA_IN_P
RTX_I_P
RTX_I_N
RTX_Q_P
RTX_Q_N
DCS_LNA_IN_N
DCS_LNA_IN_P
GSM_LNA_IN_N
GSM_LNA_IN_P
SBCK
SBDT
SBLE