Samsung SGH-B100 Service Manual page 52

TP101
R111
C135 L100
C108
DCS_LNA_IN_P
C110
DCS_LNA_IN_N
C117
GSM_LNA_IN_P
C124
GSM_LNA_IN_N
DPCS_PAM_IN
GSM_PAM_IN
DPCS_PAM_IN
GSM_PAM_IN
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RFS100
C103
R100
L108
L102
F100
C111
9
BAL1
IN1 1
8 OUT1
7
BAL2
4
IN2
6
OUT2
C118
G G G G
L103 10 5 3 2
C101
26M_OUT
AFC
R101
C106
C104
VCCD_2.9V
VBAT
C113
C112
C114 C115
R103
C116
C127
C126 C122 C123
L104
SERLE
SERCLK
SERDAT
RTXIN
RTXIP
10-21
Flow Chart of Troubleshooting
L101 L107
C105
C109
PAM100
6 1
DCS_RX VBATT
7
GSM_RX
2
VLOGIC
19 3
DCS_IN VRAMP
17 4
GSM_IN TX_EN
5
BS
18
NC
VRF_2.9V
OSC100
3 4
C100
HOT GND2
GND1 HOT
2 1
RX1900B
VLDO2
RX1900
VLDO1
RX1800B
VBAT
RX1800
VDD
U103
RX900B
VCC_TXVCO
RX900
TXOP_HI
RX850B
TXOP_LO
RX850
VLDO3
GND
VBAT
TA100
R102
VMOD_EN
VAPC
TX_EN
BAND_SEL
C119 C125 C120 C121
RTXQN
RTXQP
C107
DCS_LNA_IN_P
DCS_LNA_IN_N
GSM_LNA_IN_P
GSM_LNA_IN_N