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Flow Chart of Troubleshooting
7-12
GND
17
GND
21
NC
NC
22
V+
14
9
3S2
11
4S1
13
4S2
D1
16
D2
4
D3
8
D4
12
6
2
1-2I
N
15
1S1
1
1S2
2S1
3
5
2S2
3-4I
N
10
3S1
7
U202
STG3699
100NF
C231
SPVDD
REC_P
AUDIO_SW1
SPK_N
REC_N
SPK_P
AMP_N
AMP_P
R321
51 K
27PF
C309
100NF
C30
8
22NF
C319
R32
2
VDD3
33 0
1N F
C313
6.3V
33UF
C316
15K,1%
R32
9
C315
47N F
C314
100N F
C317
100NF
C318
1.2N
F
3.3K
R326
33K
R328
VBAT
R324
22K,1%
9
VRE
F
VS
S
8
/C
S
29
3
/IR Q
/R
D
31
/RST
4
28
/W
R
19
MT R
5
NC
PLLC
6
17
SPOUT1
SPOUT2
18
15
SPVD
D
SPVS
S
16
7
VD D
33
G
G
34
35
G
G
36
HPOUT-L/MONO
10
11
HPOUT-R
IOVDD
32
LED
2
24
23
D4
D5
22
21
D6
D7
20
EQ
1
12
13
EQ
2
EQ
3
14
YMU765
30
A0
1
CLKI
D0
27
26
D1
25
D2
D3
VDD3
U304
51 K
R32
3
R327
4.7K,1%
VDD3
100N
F
C312
IN
2
NC
1
OU T
4
VCC
5
U303
TC7SH04FU-TE85L
3
GN
D
C307
100P
F
VDD3
VDD3
HD(7)
HD(6)
HD(5)
HD(4)
HD(3)
HD(2)
HD(1)
HD(0)
HA(1
)
AMP_
P
AMP_
N
HWR_
N
HRD_
N
M_IR
Q
MELODY_C
S
VI B
MELODY_CLK
LINE_OUT