Samsung SGH-B500 Service Manual page 56

R101
AFC
C117
V_BATT
C121
C122
R106
C126
DPCS_PAM_IN
C127
GSM_PAM_IN
R107
L109
*
C129
VRF_2.9V
R114
C116
C115
C118
VCCD_2.9V
VLDO2
VLDO1
VBAT
VDD
VCC_TXVCO
TXOP_HI
TXOP_LO
VLDO3
C128
C130 C131
SBLE
SBCK
SBDT
RTX_I_N
RTX_I_P
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OSC100
1 2
HOT GND1
GND2 HOT
4 3
RX1900B
RX1900
RX1800B
RX1800
RFT100
RX900B
RX900
RX850B
RX850
GND
10-21
Flow Chart of Troubleshooting
L108
26MHZ_DBB
RTX_Q_N
C125
RTX_Q_P
C119
DCS_LNA_IN_P
DCS_LNA_IN_N
GSM_LNA_IN_P
GSM_LNA_IN_N