Samsung GT-S5200 Service Manual page 74

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
C120 L108
1005
1005
RX_TX_QN
RX_TX_QP
RX_TX_IN
RX_TX_IP
REF_ON_PMU
REF_CLK
1005
C130
BT_CLK
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RFS100
L101
C107
C106
C108
F100
11
C110
ANT
1
GSM850-RX1
14 2
VC1 GSM850-RX2
C113
3
EGSM-RX1
10 4
VC2 EGSM-RX2
5
DCS-RX1
6
DCS-RX2
7
PCS-RX1
PCS-RX2 8
15
DCS|PCS-TX C117
17
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
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
TP_RF_DATA
28 3
I- DATA
TP_RF_CLK
29 2
I+ CLK
30 1
C129
TP_RF_EN
RF_EN
VDD_SYN_2V8
OSC100
C133
4 3
C132
1 2
9-46
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
C124
VDD_IO_LOW_1V8
RF_DATA
RF_CLK
C137
VDD_IO_HIGH_2V9
C138