Samsung SGH-P400 Service Manual page 31

SGH-P400 Flow Chart of Troubleshooting
R1000
18
GSM_PAM_IN
R1002
R1003
300
300
R1004
18
DPCS_PAM_IN
R1006
R1007
300
300
ANT1
1 L1003
1
1.8NH
2
2
3
3
C1002
L100 0
0.75PF 4.7nH
GSM_TX_EN
DCS_TX_EN
PCS_RX_EN
C1008
1PF
R1001
180
R1005
VBAT
180
C1012
33PF
VCC2
VCC2
VCC
C1013
100UF
6.3V
TX_BAND_SEL
C1015
33PF
TX_EN
C1016
33PF
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CN1001
C1000
47PF
1 3
OUT IN
GND GND
4 2
U1005
15
ANT
EGSMRX
13 VC1 1
11 VC2 EGSMRX 2
DCSRX 3
5 VC3
10 DCS/PCSTX DCSRX 4
PCSRX
12 EGSMTX 6
GG GG G
7 14 16 19 20
C1007
C1017
47PF
10PF
L1007
3.3nH
L1008
18nH
U1001
VPAC
C1014
1NF
R1008
100K,1%
TXPOWER
3-20
C1003
0.75PF
GSM_LNA_IN_N
L1001
C1004
30nH
0.75PF
GSM_LNA_IN_P
C1005
0.75PF
DCS_LNA_IN_N
L1002
C1006
8.2nH
0.75PF
DCS_LNA_IN_P
F1003
C1009
0.75PF
4
OUT1 PCS_LNA_IN_N
2
IN
6
L1006
OUT2
C1010
7.5NH
G1 G2 G3
0.75PF
PCS_LNA_IN_P
1 35