Samsung GT-S5200 Service Manual page 62

Flow Chart of Troubleshooting
ANT100 ANT101
R100
C105
1005
C112
C109
VC1
VC2
DPCS_TX
GSM_TX
C107
1005
L104
C108
1005
1005
C110
1005
C113 L106
1005
C117
1005
L107
C118
1005
C119
1005
L108
C120
1005
1005
RX_TX_QN
RX_TX_QP
RX_TX_IN
RX_TX_IP
REF_ON_PMU
REF_CLK
1005
C130
BT_CLK
RFS100
L101
C106
F100
11
ANT
1
GSM850-RX1
14 2
VC1 GSM850-RX2
3
EGSM-RX1
10 4
VC2 EGSM-RX2
5
DCS-RX1
6
DCS-RX2
7
PCS-RX1
PCS-RX2 8
15
DCS|PCS-TX
17
EGSM|GSM850-TX
G G G G G G G
9
12 13 16 18 19 20
C139
NC US|EGSM_TX
21 10
TEST_A PA_VCTRL
22 9
TEST_B TX_VCTRL
23 8
NC U100 VDD_RF
24 7
NC VDD_LO
25 6
VDD_BB VCO_SYN_REG
26 5
Q- VDD_SYN
27 4
Q+ VDD_IO
28 3
I- DATA
29 2
I+ CLK
30 1
TP_RF_EN
VDD_SYN_2V8
OSC100
4 3 C133
C132
1 2
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C107
1005
L104
C108
1005
1005
C110
1005
C113 L106
1005
C117
1005
L107
C118
1005
C119
1005
L108
C120
1005
1005
L105
1005
DPCS_IN
C140
GSM_IN
C114
VDD_RX_TX_2V8 VDD_RX_TX_2V8
C122
C123
R103
TP_RAMP
RAMP
VDD_IO_LOW_1V8
TP_RF_DATA
RF_DATA
TP_RF_CLK
RF_CLK
C137
C129
VDD_IO_HIGH_2V9
RF_EN
C138
9-34
RAMP_OUT
C124