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Flow Chart of Troubleshooting
Speaker
VDD2_2V85
R424
C439
C402
VDD_1.9V
C420
R406
MEL_13M
R408
R413
LINE_OUT
C421
AMP_IN
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VBAT
VDD_1.9V
HD(0)
HD(1)
C401
HD(2)
HD(3)
C403
C404
HD(4)
HD(5)
HD(6)
HD(7)
MELODY_CS
M_INT
HRD_N
M_RST
VDD_1.9V
HWR_N
HA(1)
HA(2)
U408
C419
1
5
NC
VCC
2
IN
VIB
3
4
GND
OUT
R410
C422
R414
C423
R417
C424
C425
C426
7-14
U406
C1
AVDD
VDD3_2V85
E1
B1
DVDD
AVSS
D7
D1
DVDD
DVSS
J3
D8
DVDD
DVSS
C8
J4
SPVDD
DVSS
B8
SPVSS
G3
D0
J2
B3
D1
HPC
H2
B6
D2
HPOUTL
G2
A6
D3
HPOUTR
H1
A5
D4
HPVSS
J1
D4
F3
E8
D5
IOVDD1
G1
H3
D6
IOVDD2
F2
D7
C410
H4
H8
/CS,_SS
LED0
E7
H7
/IRQ
LED1
G4
J7
/RD,SI
LED2
D3
F7
/RST
LRCK
R403
J5
J8
/WR,SCK
MTR
C2
D2
C415
TXOUT
PLLC
B2
C3
VREF
RXIN
F1
A1
YMU788
A0
RXIN
E3
F8
A1
SDIN
R405
D4
INDEX
E6
B7
MCLK
SPOUT1
G5
A8
IFSEL
SPOUT1
G7
A7
MTR
SPOUT2
H5
SMODE
J6
SO
D6
TESTI0
R411
B5
F6
BBL
TESTI1
C5
G6
BBR
TESTI2
G8
C7
BCLK
TESTI3
E2
CLKI
1
NC
B4
2
EQ1
NC
A3
EQ2
A4
EQ3
A2
EXC
C4
EXTIN
C6
EXTOUT
H6
GPIO
MELODY IC
C409
AMP_P
AMP_N
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