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SGH-S400i Flow Chart of Troubleshooting
2-
21
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R305
VAUDIO_3.3V
L301
6
D
N
G
17
D
N
G
NC
21
NC
22
14
+
V
1
S3
7
9
3S2
11
4S1
13
2
S4
1
D
16
4
D2
3
D
8
D4
12
U304
2
1-2IN
15
1
S1
1
1S2
2S1
3
5
2
S2
3-4IN
10
R307
R308
R300
88
3
C
R304
98
3
C
R372
C300
AOUTBP
AOUTBN
SPK_SEL
MSPK+
MP3+
MSPK-
MP3-
EAR_SEL
R_OUT
L_OUT
AMP_IN-
EAR_L
EAR_R
C302
01
3
R
V
C304
C393
C314
C308
28
16
SPVSS
D
D
V
7
F
E
R
V
9
8
S
S
V
29
/CS
Q
RI/
3
31
/RD
4
T
S
R/
/WR
IOVDD
2
D
E
L
R
T
M
19
C
N
5
6
C
L
L
P
1
T
U
O
P
S
17
18
2
T
U
O
P
S
SPVDD
15
13
14
EQ3
G
33
34
G
G
35
36
G
10
HPOUT-L/MONO
HPOUT-R
11
32
26
2
D
25 24
3
D
4
D
23 22
5
D
6
D
21 20
7
D
12
EQ1
EQ2
U314
A0
30
I
K
L
C
1
27
D0
D1
R301
C301
VCCD_2.9V
R303
C303
VBAT
R309
R306
VCCD_1.8V
1NF
C309
N
E_
BI
V
+
K
P
S
M
-
K
P
S
M
D(1)
D(0)
CP_WEN
CP_OEN
A(0)
YMU_CS
YMU_L
YMU_R
CLK13M_YMU
)
2(
D
LED_DATA
YMU_IRQ
RST
)
5(
D
)
6(
D
)
7(
D
)
4(
D
)
3(
D