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Flow Chart of Troubleshooting
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10-9
OVP
Digital External Interface
V_EXT_CHARGE_IF_5.0V
R500
3
0
5
D
Z
CH4
CH5 6
VN
2
R504
D500
1 CH1
3 CH2 CH3 4
5
C501
VDD_IO_HIGH_2.9V
C505
V_EXT_CHARGE_5.0V
C502
2
0
5
D
Z
7
8
OUT4
TA500
9 10
GND
IN1 1
2
IN2
IN3 3
4
IN4
OUT1
5
6
OUT2
OUT3
R503
F500
GND
VDD_IO_HIGH_2.9V
U502
GND
2
1
IN
5
OUT
3
_EN _FLAG
4
C504
U500
R502
V_EXT_CHARGE_IF_5.0V
R501
C503
VBAT
26
NC 27
8
8
9
9
NC 21
22
NC
23
NC
NC 24
25
NC
NC
18
19
19
2
2
20 20
3
3
4
4
5
5
6
6
7
7
10
11
11
12
12
13 13
14
14
15
15
16 16
17
17
18
IFC500
1
1
10
FM_ANT
EARSPK_L
EARSPK_R
EARMIC_N
EARMIC_P
USB_D-
USB_D+
AUX_ON_JIG
RXD1_JIG
TXD1_JIG
AUX_ON
JACK_IN
EAR_SWITCH
EAR_ADC
TXD1
RXD1