Table of Contents
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Flow Chart of Troubleshooting and Circuit Diagrams
C156
C108
DCS_TX
L121
GSM_TX
C106
L103
MOD_CP
C129
TX_VCO_0_EN
TX_VCO_1_EN
PAM100
DCS|PCSOUT
16
DCS|PCSIN
15
G
C155
14
G
13
G
12
RSVD
11
G
10
G
C157
9
GSMOUT
C105
C118
V_2.85TX
C123
C124
R111
R112
C131
C132
Qualcomm recommend
C634 : COG type(30ppm)
C635 : COG type(30ppm)
C636 : CPPS type
R116
C135
R118
C138
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TXEN
1
2
3
BS
4
RSVD
VBATT
5
6
VAPC
GSMIN
7
RSVD
8
17
VBAT
C117
GSMTX_IN
DCSTX_IN
C125
3
VCC
10
1
VCTL
LOWOUT
11
VSW1
5
HIOUT
9
VSW2
R114
14
13
12
8
7
6
4
2
VCO100
3-43
TX_EN
DCSTX_IN
BAND_SEL
GSM_PA_PWR_CTL
R101
GSMTX_IN
C113
C115
C116
R103
R104
R113
C134
R117
TXVCO
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