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SGH-E880 Flow Chart of Troubleshooting
2-
2
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CSP2600
C710
VRF_2.9
C711
C707
R701
C706
C708
R703
R704
R700
R702
C705
5
BUFFIN
BUFFOUT
6
GND
2
OUT
3
4
VCC
1
VCONT
OSC700
L700
C709
CLK13M_RF
CLK13M_TR
CLK13M_MC
CLK13M_YMU
AFC
SIM_RST
SIM_CLK
VSIM
SIM_IO
R110
R111
C115
R112
VCCD_1.8
C117
R107
VCCD_1.5
VCCB_2.9
C119
R106
VBAT
R105
VCCD_2.9
VRF_2.9
R104
R113
VCCB_2.9
C121
VCCB_2.9
R108
VCCA_2.9
C107
C108
C109
VBAT
C124
VCCA_2.9
C123
U101
R103
C110
VCCD_1.8
C113
41
R
P
G
E
R
V
31
M
VRTC H11
VSIM K12
1
S
S
V
5
G
2
S
S
V
4
K
3
S
S
V
2
R
4
S
S
V
6
P
M
C
V
X
V
31
R
Q
A
N
E
O
X
1
D
VL5S_A D10
C9
VL5S_B
VLDO_1 G11
VLDO_2 J12
VLDO_3 A13
VLDO_4 B12
VLDO_5 B10
VLDO_6 A14
VLDO_7 C12
VREF A10
N
G
E
R
V
B
D
D
V
6
A
D
D
D
V
1
1
N
V
D
D
V
11
L
1
OI
_
D
D
V
5
N
2
OI
_
D
D
V
4J
L
T
C
O_
D
D
V
4
C
VEXT E14
VIB_DRV F15
N
E_
G
N
R_
BI
V
9L
VL4S_A A12
VL4S_B B11
P10
UP_RST R10
VACC F14
VBAT E13
1
D
D
V
3J
VDD12 J13
2
D
D
V
3
M
3
D
D
V
6
N
C11
VDD34
5
D
D
V
0
1
C
76
D
D
V
31
B
SDI_PSC
SDO_PSC N7
SERCK
C2
C1 SERDA
B1 SERLE1
SERLE2
A2
SIM_CLK K14
SIM_IO J11
SIM_RST K11
P
X
T
7
E
UP_CLK N9
UP_IO
9
K
O_
T
E
S
E
R
RING_DRV F13
RTC_ALMN H10
KL
C
_
C
T
R
4
N
RWN
L2
NI
X
T
X
R
6
D
PI
X
T
X
R
7
D
N
Q
X
T
X
R
6
C
P
Q
X
T
X
R
7
C
SCLK_PSC L8
M7
A4 OCTL4
G6 OCTL5
OCTL6
B3
A3 OCTL7
F
U
B_
1
W
S
P
7L
P
E
E
K_
R
W
P
9
M
N1
W
S_
R
W
P
51
C
2
W
S_
R
W
P
41
C
1
F
E
R
A
R
6
B
2
F
E
R
A
R
5
B
R3 RESETN_CSP
N
T
U
O
CI
M
51
P
P
T
U
O
CI
M
51
N
E
D
O
M
01
N
1
5
C
N
6
C
N
2
7
C
N
5
P
OCTL0
E6
C5 OCTL1
OCTL2
F5
E5 OCTL3
R
U
C
H_
D
N
G
11
F
L
T
C
O_
D
N
G
4
B
1
C
S
P_
D
N
G
51
B
2
C
S
P_
D
N
G
51
K
Q
R
T
NI
01
L
L3 I|O
LED1_DRV G13
LED2_DRV G12
C
M
6
R
N
NI
CI
M
41
M
P
NI
CI
M
41
N
01
J
71
S
D
N
G
01
K
2
S
D
N
G
8
F
9
F
3
S
D
N
G
4
S
D
N
G
01
F
5
S
D
N
G
7
G
6
S
D
N
G
8
G
7
S
D
N
G
9
G
8
S
D
N
G
01
G
9
S
D
N
G
6
H
V
D
N
G
31
P
3
P
B
D
N
G
6
F
D
D
N
G
01
M
Q
D
N
G
8
E
1
S
D
N
G
7
F
01
S
D
N
G
7
H
11
S
D
N
G
8
H
9
H
21
S
D
N
G
31
S
D
N
G
7J
41
S
D
N
G
8J
51
S
D
N
G
9J
61
S
D
N
G
DB14
D3
DB15
D2
DB2
K3
J5 DB3
DB4
J6
DB5
H5
DB6
G3
DB7
G4
DB8
F4
DB9
F1
R
T
NI
D
CSN_PSC
K
CI
A
D
4
R
I
DI
A
D
6L
O
DI
A
D
6
M
N
RI
A
D
4
P
DB0
K1
K2 DB1
DB10
F2
DB11
F3
DB12
E2
DB13
E3
21
P
P
B
T
U
O
A
21
R
N
NI
X
U
A
41
L
P
NI
X
U
A
51
M
N
T
U
O
X
U
A
31
L
31
K
P
T
U
O
X
U
A
3
C
D
A_
X
U
A
3
1
D
CH_BDRV E11
CH_ISEN F12
CH_RES D14
E9
CREF
K8
AB4
N2
M2 AB5
AB6
M1
K7 AB7
AB8
K5
ADC_AUX1 E10
ADC_AUX2 D15
C
F
A
9
D
N
A
T
U
O
A
21
N
P
A
T
U
O
A
11
P
N
B
T
U
O
A
U100
AB0
K6
P1 AB1
AB2
L5
N1 AB3
C118
5
6
6
G
7 8
G G
9 10
G
CN100
1
1
2
2
3
3
4
4
5
C111
C122
VRTC_1.5
C116
C104
2
POS 1
R109
BAT100
NEG
C102
C106
AGND
VCCD_2.9
VBAT
C114
C103
C105
AGND
VCCD_2.9
C112
F
U
B_
1
W
S
P
YMU_VIB_EN
Q
A
N
E
O
X
BP_VF
LCDVIB_EN
SVC_LED
PCS_RX_EN
EAR_ADC
EAR_ADC
N
A
T
U
O
A
P
B
T
U
O
A
P
T
U
O
CI
M
N
B
T
U
O
A
N
T
U
O
CI
M
P
A
T
U
O
A
P
NI
CI
M
N
NI
CI
M
P
NI
X
U
A
K2
3
KL
C
C
M_
M
31
K
L
C
T
NI
_
P
S
D
N
O
_
GI
J
N
O
_
R
W
P
RST
PWR_KEEP
INTRQ
N
NI
X
U
A
N
T
U
O
X
U
A
DSP_AB(0:8)
DSP_DB(0:15)
TX_BAND_SEL
RF_EN
PAC_EN
SERLE
SERDAT
SERCLK
AFC
VAPC
RTX_IP
RTX_IN
RTX_QP
RTX_QN
P
T
U
O
X
U
A
DSP_DB(11)
DSP_DB(12)
DSP_DB(13)
DSP_DB(14)
DSP_DB(15)
DSP_DB(2)
DSP_DB(3)
DSP_DB(4)
DSP_DB(5)
DSP_DB(6)
DSP_DB(7)
DSP_DB(8)
DSP_DB(9)
DSP_IO
FLASH_RESET
DSP_RWN
DCS_TX_EN
GSM_TX_EN
UP_CS
UP_SCLK
UP_SDO
UP_SDI
RTCALARM
SIMRST
SIMCLK
SIMDATA
KEY_BACKLIGHT_1
DSP_AB(0)
DSP_AB(1)
DSP_AB(2)
DSP_AB(3)
DSP_AB(4)
DSP_AB(5)
DSP_AB(6)
DSP_AB(7)
DSP_AB(8)
DSP_DB(0)
DSP_DB(1)
DSP_DB(10)