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Flow Chart of Troubleshooting
7-16
VBAT
+VDD_IO_HIG
H
GND
17
GND
NC
21
22
NC
14
V+
9
3S
2
11
4S1
13
4S2
D1
16
4
D2
D3
8
D4
12
6
U662
STG3699
2
1-2IN
15
1S1
1
1S
2
2S
1
3
5
2S2
3-4I N
10
3S1
7
C626
10NF
R61
9
130K,1%
R618
330K,1%
HFR_N
AMP_
N
EARSPK_R
EARSPK_COM
EXTSPK_E
N
EAR_
P
AMP_P
AMP_
N
SPK_
N
SPK_P
MELODY_SEL
AMP_P
HFR_P
HFR_N