Samsung GT-B2100 Service Manual page 39

Flow Chart of Troubleshooting
Power On
REF_ON_PMU
R102
RF_RESET
C124
RF_CLK
RF_EN
RF_DATA
XMODE
XDIV
AFC
VDD
VDD
C125
XTAL2
XTAL1
XEN
GND
NC
NC
OSC100
U407
RFS100
L113 L111 L108 L106
C125
R101
R103
C126
C124 C127
R102 C115
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
RFOH
RFOL
GND
U101
VDD
VDD
VIO
_RESET
_PDN
C432
C425 C435
ZD403 ZD404
10-2
R101
DCS_TX
EGSM_TX
R103
VDD_RX_TX_2.8V
VDD_IO_LOW_1.8V
RF_RESET
PON_3587_SYNTH
C126
D_REF_CLK
C127
BT_CLK
RX_TX_IP
RX_TX_IN
RX_TX_QP
RX_TX_QN