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Flow Chart of Troubleshooting
SLAVE RF
1
1
2
2
3
3
R600
0ohm
1005
SHORT
R602
L606
C604
F600
19
ANT
10
VC1_S
VC1
11 VC2
VC2_S
12
DPCS_TX_S
GSM1800|1900_TX
15
GSM850|900_TX
GSM_TX_S
G
G G
G
G
G
G G
9
1
3
14
1
6
17 18
20
21
C616
C617
R603
AFC_S
REF_ON_S
R605
RFIC_RESET_S
C626
RF_EN_S
RF_DATA_S
RF_CLK_S
GSM_TX_HB_S
GSM_TX_LB_S
PON_PA_S
VBAT
PA_RAMP_S
C602
L601
GSM850 RX
C607
C608
GSM900 RX
C609
1
GSM850RX
C610
2
GSM850RX
1005
3
GSM900_RX
4
GSM900_RX
5
GSM1800_RX
6
DCS RX
GSM1800_RX
7
GSM1900_RX
C612
8
GSM1900_RX
G
G
G
24
22
23
C615
PCS RX
C618
C621
+VDD_RX_TX_S_2.8V
C623
OSC600
2
1
3
4
PAM600
DCS|PCS_IN
1
DCS|PCS_OUT
GSM850|900_IN
7
GSM850|900_OUT
6 TX_EN
MODE_SEL
BAND_SEL 3
4 VBATT
BYPASS_CAP 9
5
BYPASS_CAP 13
VRAMP
C611
C629
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L602
L603
L604
RFIC_EN_S
L605
GND
28
XMODE
29
NC
XDIV
30
RFOH
AFC
31
VDD5
VDD2
RFOL
VDD1
U600
RAMPOUT
XTAL2
RAMPIN
XTAL1
VDD4
XEN
VDD3
GND1
VIO
NC2
10
NC1
L600
DPCS_TX_S
C601
C600
C603
GSM_TX_S
C605
C606
1
2
1
0
2
MODE_SELECT_S
BAND_SEL_S
C613
C614
10-28
+VDD_RX_TX_S_2.8V
C619
GSM_TX_HB_S
C622
GSM_TX_LB_S
PA_RAMP_S
R604
RAMP_S
+VCC_SYN_S_2.8V
C624
10V
+VDD_IO_LOW_S_1.8V
C627
RFIC_RESET_S
C628
CLK26M_REF_S
RX_TX_IP_S
RX_TX_IN_S
RX_TX_QP_S
RX_TX_QN_S
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