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Flow Chart of Troubleshooting
9-2
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C101
C135
VDD_IO_LOW
VCC_SYN
C100
VCC_RX_TX
C131
C134
VCC_RX_TX
C106
R100
C136
R103
1
4
V
C
C
VCC_RX_TX
TCX100
2
G
N
D
O
U
T
3
V
C
R104
C126
C109
XOUT
35
X
T
A
L
1
34
X
T
A
L
2
_PDN
19
_RES
9
1
_SEN
SDIO
2
33
V
D
D
1
32
V
D
D
2
11
V
D
D
3
12
V
D
D
4
V
D
D
5
16
V
IO
10
X
D
IV
30
36
X
E
N
X
M
O
D
E
29
8
27
RFIAP
26
RFIDN
23
22
RFIDP
25
RFIEN
24
RFIEP
RFIPN
21
20
RFIPP
R
F
O
H
17
15
R
F
O
L
SCLK
3
BIN
BIP
7
BQN
4
5
BQP
G
N
D
28
37
G
N
D
1
18
N
C
39
N
C
1
N
C
2
38
13
R
A
M
P
IN
14
R
A
M
P
O
U
T
RFIAN
U100
A
F
C
31
6
C120
C110
RAMP_PAM
DCS_TX
IRX_TX_N
RAMP
BT_CLK_REQ
BB2G_REF_CLK
IRX_TX_P
QRX_TX_N
QRX_TX_P
DCS_RXM
DCS_RXP
GSM_RXM_900
GSM_RXP_900
PCS_RXM
PCS_RXP
GSM_TX
D_REF_CLK
RF_CLK
RF_EN
AFC
BT_CLK_26M
RF_DATA
PON_4220
C426
C
41
0
VDD_GSM_CORE
VINT
C411
R415
VCC_SYN
C401
47
0n
F
6.
3V
10
05
VHIGH
R414
C415
C414
C425
C418
R421
VDD_VIB_3V3
C429
VINT
VCC_RX_TX
VBUS_5V
ADV3V
VHIGH
VDD_IO_HIGH
C
40
9
C416
VDD_MEM_3G_CORE
VCC_TX
VBAT
VBUS_5V
C406
C428
TP401
C423
AVDD_HFA
ADV3V
VCC_SIM
C417
C432
L403
C427
VDD_PLL
C412
VBAT
VBAT
VDD_IO_LOW
VDD_USB
C442
VDD_MEM_CARD_2V9
VCHG_5V
VBAT
C413
AVDD
C407
VDD_IO_LOW
OSC400
L402
VCC_KEYLED_3V3
C430
R417
C405
C420
C404
D8
GPO1
C444
B9
PWREN1
D1
SCUSB
D2
NC
D3
NC
D4
GPO1VIN
D5
REC1_N
D6
GPIO56GND
D7
NC
B41
OSCO
B42
NC
B43
VINT
B44
CCSET
B5
INT_N
B6
PWREN5
B7
PWREN3
B8
PWREN2
B34
GPO2VIN
B35
NC
B36
NC
B
37
M
IC
B
IA
S
V
D
D
B38
REFC
B39
VINT
B4
RSTMEM_N
B40
NC
B
27
D
3D
4V
IN
B
28
U
S
B
V
IN
B
29
D
1D
2V
IN
B
3
D
C
D
2F
B
B
30
V
C
C
B
31
U
S
IM
V
IN
B
32
R
F
3R
F
4V
IN
B
33
R
F
1R
F
2V
IN
B
2
LC
V
IN
B
20
N
C
B
21
D
6V
D
D
B22
SCL
B
23
N
C
B
24
N
C
B25
NC
B
26
IO
V
IN
B12
GPIO6
B13
CLK32K
B14
USIMACT
B15
USIMPRES
B16
SHUTDOWN
B
17
N
C
B
18
N
C
B
19
H
C
V
D
D
A56
REC2_N
A
6
D
C
D
2L
X
A
7
D
C
D
1V
IN
A8
PWREN4
A
9
D
C
D
1L
X
B1
VBATSENSE
B10
GPIO1
B11
GPIO3
A49
VHIGH
A
5
D
C
D
2V
IN
A
50
N
C
A
51
N
C
A52
OSCI
A53
VBUS
A54
VCHG
A55
VCHG
A
41
R
F
2V
D
D
A
42
R
F
1V
D
D
A43
GPO2
A44
NC
A
45
N
C
A
46
N
C
A47
VSAVE
A48
REFGND
A
34
D
4V
D
D
A
35
D
3V
D
D
A
36
U
S
B
V
D
D
A
37
D
2V
D
D
A
38
D
1V
D
D
A
39
R
F
4V
D
D
A
4
N
C
A
40
R
F
3V
D
D
A
27
D
5V
D
D
A28
SDA
A29
NC
A
3
LC
V
D
D
A30
VINT
A31
NC
A32
NC
IO
V
D
D
A
33
A2
VBAT
A20
ONKEY_N
A21
NC
A
22
G
N
D
A
23
H
C
V
IN
A24
NC
A25
NC
A
26
D
5D
6V
IN
A12
GPIO4
A
13
N
C
A14
GPIO5
A
15
N
C
A16
RSTHC_N
A17
NC
A18
NC
A
19
G
N
D
U400
1
G
N
D
2
NC
3
NC
A1
VBAT
A
10
D
C
D
1F
B
A11
GPIO2
C424
BAT400
C443
TP400
USB_SUSPEND
BT_CLK_REQ
ONKEYn
CTRL_VREF_3G_B1
BB3G_REF_ON
IT_PMU
VREF_3G_B1
SCL1
SIM_OFF
RSTON
SDA1
32KHZ_DIGIT
AUX_ON
Summary of Contents for SGH-P270
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