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Flow Chart of Troubleshooting
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3-13
C451
R442
B1
VIM
C1
A1
VIP
VOM
A3
C3
VOP
A2
VSS
U403
N
E
2
C
C
N
1
C
N
2
D
D
V
P
2
B
B3
PVSS
VDD
C453
C450
R448
R447
R443
L402
VBAT
L401
C458
R446
L403
TA400
C452
AMP_EN
SAPA_P
SAPA_N
DAC_SPKP
DAC_SPKM
8 8
9 9
11
NC NC
12
1
1
10 10
2 2
3 3
4
4
5
5
6
6
7 7
CN400
MOT_3.3V
SPK_P
SPK_N
GND
IN1
4
IN2 8
NC1
5
NC2 7
NO1
2
NO2 10
V+
1
U401
3 COM1
9
COM2
6
GND
11
R445
C448
C449
R444
C455
VBAT
C454
AMP_EN
SAPA_N
SAPA_P
AOUTAP
AOUTAN
SPK_P
SPK_N