Samsung GT-S3850 - Service Schematics

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Level
3
Repair
8-39
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8-4.
Service Schematics
RX1
TXEN
L
L
L
H
L
L
2G RF
CONTROL
HTX_LB
TX_HB
SW_EN
L
Sleep
H
RX2 H
H
H
BS
L
H
H
C105
R101
28
TX_LB_IN
V
B
A
T
T
5
6
V
B
A
T
T
21
VRAMP
9
G
1
0
G
1
2
RX1
18
16
RX2
26
SW_EN
20
TXEN
TX_HB_IN
27
3
G
4
1
4
2
G
G
4
3
4
4
G
4
G
G
7
8
G
G
3
3
G
G
3
4
G
3
5
G
3
6
G
3
7
3
8
G
G
3
9
4
0
G
G
2
2
G
G
2
3
G
2
4
2
9
G
G
3
0
2
G
3
1
G
G
3
2
1
1
A
N
T
BS
25
G
1
G
1
3
1
4
G
G
1
5
1
7
G
G
1
9
PAM100
R103
C103
R115
L108
C112
D
1
0
1
L130
L111
R111
L118
R100
L101
L106
C160
L102
L104
C107
C101
L119
RFS100
A
2
C
1
3
G
G
4
ANT100
ANT101
L109
L113
C104
D
1
0
3
L133
L110
L117
D
1
0
2
R104
D
1
0
0
L107
R102
L114
VBAT
R105
1
0
8
GSM850_OUT
GSM850_OUT
9
6
GSM900_OUT
7
GSM900_OUT
IN
1
F100
G
2
3
G
4
G
5
G
G
BAL1
BAL2
7
6
BAL2
2
G
G
3
4
G
5
G
1
0
G
UNBAL
1
F102
BAL1
9
8
L123
L120
C106
L122
L121
L112
L115
L105
PCS_RX_A
PCS_RX_B
GSM_850_RX_A
GSM_850_RX_B
GSM_900_RX_A
GSM_900_RX_B
DCS_RX_B
DCS_RX_A
SEL_BAND
EN_TR_SW
VRAMP
EN_TX
PA_LB
PA_HB
ANT100ANT101
A
N
T
1
0
2
C101
C103
C104
C105
C106
C
1
0
7
C108
C109
C
1
1
1
C
1
1
2
C
1
1
3
C114
C115
C
1
1
6
C
1
1
7
C
1
1
9
C120
C
1
2
1
C
1
2
2
C
1
2
3
C
1
2
4
C
1
2
5
C126
C127
C
1
2
8
C
1
2
9
C
1
3
0
C131
C132
C
1
3
3
C134
C135
C136
C138
C
1
3
9
C140
C141
C
1
4
2
C
1
4
3
C145
C146
C
1
4
8
C149
C
1
5
0
C151
C
1
5
2
C153
C
1
5
4
C
1
6
0
C202
C
2
0
3
C
2
0
4
C205
C206
C207
C
2
0
8
C209
C210
C
2
1
1
C212
C213
C214
C215
C
2
1
6
C
2
1
7
C218
C219
C220
C
2
2
1
C
2
2
2
C
2
2
3
C224
C
2
2
5
C226
C
2
2
8
C230
C232
C233
C234
C235
C
2
3
6
C
2
3
7
C
2
3
8
C308
C309
C402
C403
C410
C415
C604
C610
D100
D101
D102
D103
F100
F101
F102
G601
G605
L101
L
1
0
2
L
1
0
4
L105
L106L107
L108
L
1
0
9
L
1
1
0
L111
L112
L
1
1
3
L114
L115
L
1
1
6
L117
L
1
1
8
L
1
1
9
L
1
2
0
L121
L122
L123
L
1
2
4
L125
L126
L
1
2
7
L
1
2
8
L129
L130
L132
L133
L200
L201
L203
L
6
0
0
L
6
0
1
L
6
0
2
L
6
0
3
OSC100
O
S
C
2
0
0
P
A
M
1
0
0
Q
5
0
0
R100
R101
R102
R103
R104
R
1
0
5
R
1
0
6
R
1
0
7
R
1
0
8
R109
R110
R111
R
1
1
4
R115
R200
R206
R
2
0
7
R
2
0
8
R209
R210
R212
R
2
1
6
R217
R220
R221
R22 2 R223
R
2
2
4
R225
R226
R
2
2
7
R
2
2
8
R
2
2
9
R
2
3
0
R
2
3
1
R
2
3
2
R233
R
4
1
1
R500
R503
R504
RFS100
T
P
_ D
_ C
L K
TP_D_CLK_N
T
P
_ F
_ C
L K
T
P
1
0
0
T
P
1
0
2
T
P
1
0
3
T
P
1
0
4
TP105
T
P
1
0
6
T
P
1
0
7
TP108
T
P
1
0
9
TP110
T
P
1
1
1
TP112
TP113
TP114
TP115
T
P
1
1
6
TP117
TP118
TP119
T
P
5
0
1
TP502
U
1
0
0
U
1
0
1
U
1
0
2
U
2
0
0
U201
U
C
P
2
0
0
V601
VR200