Samsung SGH-A801 Service Manual page 70

Umts telephone
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Flow Chart of Troubleshooting
<RF CONNECT>
ANT102
ANT101
C162
C160
C161
VRFRX1_2.65V
R108
GSM_ANT_SEL0_N
R109
GSM_ANT_SEL1_N
R110
GSM_ANT_SEL2_N
C109
R107
C119
C122
RX_QP
RX_QM
C127
RX_IP
RX_IM
SSBDT_RTR
R125
RFS100
L118
C116
C172
C128
C129
C130
C164
C132
C111
C171
C112
C174
L115
C141
1
GND
2
GND
3
R_BIAS1
4
VDDA
5
V_TUNE1
6
VDDA
7
U101
TCXO
8
VDDA
9
VDDA
10
RX_QP
11
RX_QN
12
RX_IP
13
RX_IN
14
SSBDT
SAMSUNG Proprietary-Contents may change without notice
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C163
<RF SWITCH>
L102
DUF100
19
ANT
10
3
VDD
GSM1900_RX1
4
GSM1900_RX2
1
14
VC1
GSM1800_RX1
13
2
VC2
GSM1800_RX2
12
5
VC3
GSM900_RX1
11
6
VC4
GSM900_RX2
7
GSM850_RX1
25
8
GSM850|900_TX
GSM850_RX2
22
GSM1800/1900_TX
15
UMTS1
16
UMTS2
17
UMTS3
G1 G2
G3G4
G5
G6
G7
G8G9
9
18 20
21
23
24
26 27
28
DA_LB2_OUT
VDDA
PWD_DET_IN
DCS_INN
DCS_INP
GPCS_INN
GPCS_INP
WMIX_LNN
WMIX_LNP
EGSM_INN
EGSM_INP
GCELL_INP
GCELL_INN
WLNA_OUT
9-26
L103
PCS_RXM
C121
L104
*
L105
PCS_RXP
L106
DCS_RXM
L107
L120
L108
DCS_RXP
L109
GSM_RXM
L119
L111
L110
GSM_RXP
UMTS_ANT

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