Flow Chart of Troubleshooting and Circuit Diagrams
5-25
22NF
C780
C822
33PF
27nH
L611
L608
7.5nH
0
R765
23
14
VDD2
32
VDD3
26
VDD4
0
U696
13
RFLON
12
RFLOP
24
RFOD
RFOG
25
TXIN
6
TXIP
5
8
TXQN
TXQP
7
VDD1
28
L2
PDNB
31
20
RFIDN
RFIDP
19
22
RFIGN
RFIGP
21
18
RFIPN
RFIPP
17
34
GND
35
GND
36
GND
IFLON
10
9
IFLOP
1
ION
IOP
2
L1
29
3
CKN
4
CKP
16
DIAG1
DIAG2
15
GND
11
GND
27
30
GND
GND
33
B7716
2
G1
G2
5
1
IN
OUT1
3
4
OUT2
SI4200
U623
G
25
G
1
IN
OUT
3
4
OUT
F204
C784
22NF
B7706
F205
22NF
C782
33PF
C802
22NF
C783
C781
22NF
C779
22NF
1.8PF
C787
C788
1.8PF
1.2PF
C786
C785
1.2PF
100PF
C797
18
SDI
SDO
15
16
SENB
20
VDDA
VDDC
6
XIN
7
XOUT
19
ION
IOP
11
14
PDNB
RXIN
5
RXIP
4
RXQN
3
2
RXQP
SCLK
17
9
CKP
GND
1
GND
8
GND
13
GND
21
22
GND
23
GND
24
GND
12
DCSRX
U685
SI4201
CKN
10
2V8AERO
2V8AERO
IRXN
IRXP
QRXN
QRXP
SCLK_O
SDATA_O
SENB
RF13M
DCSTX
GSMTX
GSMRX
IFLON
IFLOP
PDNB_O
RFLON
RFLOP
ITXN
ITXP
QTXN
QTXP