Samsung GT-S5200 Service Manual page 68

Flow Chart of Troubleshooting
ANT100
R100
C105
1005
C112
C109
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
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
RFS100
ANT101
C106
11
ANT
14
VC1
VC1
10
VC2
VC2
15
DCS|PCS-TX
17
EGSM|GSM850-TX
G
G G G G
9 12 13 16 18 19
L105
1005
DPCS_IN
C139 C140
GSM_IN
C114
VDD_RX_TX_2V8
C123
US|EGSM_TX
10
PA_VCTRL
TP_RAMP
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
C133
3
C132
2
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L101
C107
1005
L104
C108
1005
1005
F100
C110
1
1005
GSM850-RX1
2
GSM850-RX2
C113 L106
3
EGSM-RX1
4
EGSM-RX2
5 1005
DCS-RX1
6
DCS-RX2
7
PCS-RX1
8
PCS-RX2
C117
G G
1005
20
L107
C118
1005
C119
1005
C120 L108
1005
1005
VDD_RX_TX_2V8
C122
R103
RAMP_OUT
RAMP
VDD_IO_LOW_1V8 C124
RF_DATA
RF_CLK
C137
VDD_IO_HIGH_2V9
C138
9-40