Samsung GT-S5200 Service Manual page 71

ANT100 ANT101
R100
C105
1005
C112
C109
14
VC1
10
VC2
15
DPCS_TX
17
GSM_TX
C107
1005
L104
C108
1005
1005
C110
1005
C113 L106
1005
C117
1005
L107
C118
1005
C119
1005
L108
C120
1005
1005
NC
21
TEST_A
22
TEST_B
23
NC
24
NC
25
VDD_BB
26
RX_TX_QN
Q-
27
RX_TX_QP
Q+
28
RX_TX_IN
I-
29
RX_TX_IP
I+
30
REF_ON_PMU
REF_CLK
1005
C130
BT_CLK
OSC100
4
1
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RFS100
L101
C107
C106
C108
F100
11 C110
ANT
1
GSM850-RX1
2
VC1 GSM850-RX2
C113
3
EGSM-RX1
4
VC2 EGSM-RX2
5
DCS-RX1
6
DCS-RX2
7
PCS-RX1
8
PCS-RX2
DCS|PCS-TX C117
EGSM|GSM850-TX
G G G G G G G
9
12 13 16 18 19 20
C118
C119
1005
C120
1005
L105
1005
C139 C140
C114
VDD_RX_TX_2V8
C123
US|EGSM_TX
10
PA_VCTRL
9
TX_VCTRL
8
U100
VDD_RF
7
VDD_LO
6
VCO_SYN_REG
5
VDD_SYN
4
VDD_IO
TP_RF_DATA
3
DATA
TP_RF_CLK
2
CLK
1
C129
TP_RF_EN
RF_EN
VDD_SYN_2V8
3 C133
C132
2
9-43
Flow Chart of Troubleshooting
1005
L104
1005
1005
1005
L106
1005
1005
L107
1005
L108
1005
DPCS_IN
GSM_IN
VDD_RX_TX_2V8
C122
R103
RAMP_OUT
TP_RAMP
RAMP
VDD_IO_LOW_1V8 C124
RF_DATA
RF_CLK
C137
VDD_IO_HIGH_2V9
C138