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Flow Chart of Troubleshooting
3-13
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2 _PPR
8
BAT
GND 5
9
GND
6
IMIN
IREF 7
VIN
1
_CHG
3
4 _EN
U105
C145
C144
R135
R136
VCCD_2.9V
VBAT
C143
R134
TA_VEXT_5V
CHG_OFF
ICHRG
CHG_DET
R125
NO1
2
NO2 10
V+
1
3 COM1
9
COM2
6
GND
11
GND
IN1
4
8
IN2
NC1
5
NC2 7
U104
R116
R119
R122
R123
VBAT
C135
AUDIO_PA_SPK_N
AUDIO_PA_SPK_P
AOUTAP
AOUTAN
AUDIO_SEL
SPK_N
SPK_P