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Flow Chart of Troubleshooting
9-12
L300
BLM15HD102SN1
C313
R327
R309
C314
TA301
TA300
VBAT
R326
R324
R323
C310
C315
C312
+VDD_IO_HIGH_2.9V
10 SDA
V
D
D
3
16
V
D
D
V
O
C
2
22
MONO_IN-
27
NC
NC
26
RHP3D1
19
RHP3D2
24
RIN
8
R
O
U
T
5
SCL
11
13
ID
_E
N
B
18
L
H
P
3D
1
L
H
P
3D
2
1
LIN
9
L
O
U
T
6
15
M
O
N
O
+
M
O
N
O
-
17
23
CBYPASS
21
25
GND
20
GND
4
G
N
D
12
GND
I2
C
S
P
I_
S
E
L
14
7
I2CSPI_VDD
PAM300
HFR_P
HFR_N
EARSPK_L
EARSPK_R
EARSPK_COM
SPK_N
SPK_P
EAR2
EAR1
SDA
SCL
R306
R307
VBAT
C319
R302
R308
4
COM
2
GND
6
IN
NC
3
NO
1
V+
5
GND
2
IN
6
3
NC
1
NO
5
V+
U303
U304
COM
4
SPK_P
SPK_N
RCV_EN
HFR_P
HFR_N