4. TROUBLE SHOOTING
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FB500
600
FB501
600
1n
C503
A1
D5
A2
C5
OUT+
HPL
OUT-
HPR
C506
1n
SPK_RCV-
EAR_L
EAR_R
CN100
2
1
SPK_RCV-
3
9
2
10
1
CN101
6
5
7
4
8
SPK_RCV-
VBAT
MOTOR_PWR_N
KPD_PWR_N
10
R526
R525
10
10
R509
10
R510
C3
D1
D3
D2
IN2-
IN3-
IN2+
IN3+
1u
C514
C511
1u
C509
39n
39n
C510
LINE_OP
RCV_P
RCV_N
LINE_ON
TP1
TP2
TP3