Samsung i8510 Service Manual page 127

Flow Chart of Troubleshooting
GSM_PA_PWR_CTL
RFOUT_DCS_PCS
R102
RFOUT_GCELL_EGSM
0603
GSM_ANT_SEL1
GSM_ANT_SEL0
GSM_ANT_SEL2
GSM_ANT_SEL3
0603 0603 0603
C114 C115 C116
R103
VRFRX2_2.7V
VRFRX1_2.1V
R205
R206
VRFRX2_2.7V
R211
0603
C101
R101
1
HB_RF_IN
3
0603
LB_RF_IN
6
U101
BS2
7
BS1
8
_TXEN
9
MODE
10
RSVD
R105
R104 R106
C201
R201
C211
1
VDDA2
2
RTR6285_TCXO TCXO
3
VDDA1
4
VDDA1
C223 5
VTUNE1
6
VDDA1
7
VDDA2
U201
8
VDDA2
9
VTUNE_GPS
C224 10
VDDA1
11
RX_Q_P PRX_QP
12
RX_Q_N PRX_QN
13
RX_I_N PRX_IN
14
RX_I_P PRX_IP
15
DRX_Q_P DRX_QP
16
DRX_Q_N DRX_QN
17
DRX_I_P DRX_IP
DRX_I_N
R212
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CN101
C103 C102
1005 1005
L102
L101
1005
V_BAT
C105 C104
1
16 C111
RX1
0603
15 C110
RX2
0603
14 C109
RX3
0603
13 C108
RX4
0603 1
18
WCDMA1
19
WCDMA2
20
WCDMA3
TRX_WCDMA2100
1
TRX_WCDMA900
1
F104
C202
VRFRX1_2.1V
C210
RFOUT_UMTS2100
C212
RFOUT_UMTS900
RFOUT_DCS_PCS
C216
RFOUT_GCELL_EGSM
C217
PWR_DET
C222
51 from U101
GCELL_INN GSM850_RXM
50
GCELL_INP GSM850_RXP
49
EGSM_INN GSM_RXM
48
EGSM_INP GSM_RXP
47
DCS_INN DCS_RXM
46
DCS_INP DCS_RXP
45
GPCS_INN PCS_RXM
44
GPCS_INP PCS_RXP
43
VDDA2
42
GPS_IN RX_GPS
41 C225
WDRXLB
40 C226 C286
WDRXHB1
39
WDRXHB2
38 C231
WPRXSE1
37
VDDA2
36
WPRXSE2
C284
35 C241
WPRXSE1_OUT
3
C243 OUT
1
IN
4
G OUT
G
2 5
C246
L204 R210
F201
VMSMP_2.6V
L207
C261
R224
R225
L208
C263
10-72
ANT
ANT101 ANT_GND101
4 4
4 4
3 3
3 3
2 2 2
L103
2
1 1
1 1
1005
to U201
F101
3 C106
OUT
4 0603
IN OUT
L105
L104
G G
5 C107
2
0603
F102
3 C112
OUT
4 0603
IN OUT L107
L106
G G
5 C113
2
0603
F103
C117
3
OUT
4 SIZE
IN OUT
L109
L108
G G
C118
5
2
SIZE
3 C119
OUT
4 0603
IN OUT
L110 L111
G G
5
2
0603
C120
C203
WCDMA2100_RX
C242 L203
UMTS_RXM_2100
C244 L205
UMTS_RXP_2100
WCDMA900_RX
GSM850_RXM
GSM850_RXP
GSM_RXM
GSM_RXP
DCS_RXM
DCS_RXP
PCS_RXM
PCS_RXP