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Flow Chart of Troubleshooting
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7-9
Speaker
< Melody IC >
C
6
7
2
R634
C
6
9
4
R
6
4
4
C
6
5
7
C
6
9
2
R
6
3
1
VREG_YMU_2.85V
9
8 VSS
2
9
/C
S
/IRQ
3
3
1
/R
D
4
/RST
/W
R
2
8
1
9
NC
5
6
PLLC
SPOUT1
1
7
1
8
SPOUT2
S
P
V
D
D
1
5
1
6
S
P
V
S
S
VDD
7
VREF
3
3
3
4
G
G
3
5
3
6
G
1
0
H
P
O
U
T
-L
/M
O
N
O
H
P
O
U
T
-R
1
1
3
2
IO
V
D
D
2
LED
MTR
2
4
D3
D4
2
3
2
2
D5
D6
2
1
2
0
D7
1
2
E
Q
1
E
Q
2
1
3
1
4
E
Q
3
G
U607
A
0
3
0
CLKI
1
2
7
D
0
D
1
2
6
D2
2
5
VBATT_4.2V
C
6
9
3
R
6
4
2
R
6
4
5
R
6
3
3
C
6
9
5
C
6
7
5
R
6
4
3
C
6
5
8
C
6
7
3
C
6
7
4
SPOUT1
SPOUT2
YMU_CS_N
OE2_N
YMU_CLK
YMU_IRQ
MEL_L
MEL_R
D2(2)
D2(3)
D2(4)
D2(5)
D2(6)
D2(7)
D2(1)
D2(0)
WE2_N
A2(1)
YMU_RESET
