Samsung GT-i8910 Service Manual page 92

GSM_TX
R103
R104 R105
7
GSM_IN
DCS_PCS_TX DCS|PCS_IN
1
R106
R107 R108
TP_GSM_PA_BAND
GSM_PA_BAND
TP_GSM_PA_EN
GSM_PA_EN
TP_GSM_PA_PWR_CTL
GSM_PA_PWR_CTL
F103
C179
1
IN 4
OUT
UMTS_TX_900
G G G C180
2 3 5
C183
PA_ON_W900
PA_R0
PA_ON_W2100
C195 C196
F104
C152
C148
1 OUT 4
UMTS_TX_2100
IN
G G G
2 3 5
L132
1
1
2 2
3
3
ANT102
TP_GSM_ANT_SEL0_N
GSM_ANT_SEL0_N
TP_GSM_ANT_SEL1_N
GSM_ANT_SEL1_N
TP_GSM_ANT_SEL2_N
GSM_ANT_SEL2_N
TP_GSM_ANT_SEL3_N
GSM_ANT_SEL3_N
8
GSM_OUT
DCS|PCS_OUT
9
PAM100
V_BAT
C134
TA100
V_BAT
C181
TA102
L125
PAM101
1 VEN_900 14
GND
2 13
RFIN_900
RFOUT_900
3 12
VMODE1 VCC
4 VBATT VCCA 11
5 10
GND
VMODE2
6 9
RFIN_IMT GND
C197
7 RFOUT_IMT 8
VEN_IMT
GND
15
L133
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
RFS100
1
1
2
2
G A C G
3
1 2 3 4
3
ANT101
C100
C101
L103
C102
L102
①
VREG_FEM_2.7V
C108
20
ANT
11
VDD
15
VC1
14
VC2
13 VC3
12
VC4
24
GSM850|900_TX
22 GSM1800|1900_TX
G G G G G
9 10 19 21 23 25
C123
L111
L110
C131
L113
L112
V_BAT
CPL101
C107
1 2
IN OUT
COUP 50OHM
4 3
L137 L138
C187
R118
C194
CPL102
L140
1 IN 2
OUT
C139
COUP 50OHM
C142
C118
4 3
R112
R114 R115
9-55
Flow Chart of Troubleshooting
L100
L101
L104
L105
F100
L106
L107
1
GSM850_RX1
2
GSM850_RX2
3
C109
GSM900_RX1
GSM900_RX2 4
L108
GSM1800_RX1 5
GSM1800_RX2
6
C110
GSM1900_RX1 7
GSM1900_RX2 8
C114
UMTS_TRX1 16
17
UMTS_TRX2
18
UMTS_TRX3
L109
G G G G
C121
26 27 28
UMTS_1900_TRX
UMTS_900_TRX
UMTS_2100_TRX
②
UMTS_900_TRX
L123
C176
DUF101
C106
6
ANT
RX 1
L127 L124
3 TX
RX 8
G G G G
C117
9
2 4 5 7
③
PWR_DET_900
UMTS_2100_TRX
L128
L129
DUF102
2
ANT
7 TX RX C199 C119
5
④
1 3 4 6 8 9 L131
PWR_DET_1900
PWR_DET
GSM850_RXM
GSM850_RXP
GSM900_RXM
GSM900_RXP
DCS_RXM
DCS_RXP
PCS_RXM
PCS_RXP
UMTS_RX_900_P
UMTS_RX_900_M
UMTS_RX_2100