Samsung SGH-F300 Service Manual page 53

Flow Chart of Troubleshooting
PAC_EN
C104
DCS74137_OUT
BAND_SEL
R102
VPC
C109
GSM74137_OUT
R103
SAT_DET
VBAT
PAM100
1
ENA
2
DCS|PCS_IN
3
BS DCS|PCS_OUT
4 VSUP
5
VBATT
6
VPC
7 GSMIN
8
RSVD
GND
17
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COUP_OUT 16
15
GND
14 R101
GND 13
12 L101
GSM_OUT
GND 11
10
GND
GND 9
3-33
R100
TX_FB
DPCS_OUT
GSM_OUT