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Flow Chart of Troubleshooting
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7-7
Typical 3.7V
Typical 1.4V
BATTERY CHARGING
R510
C505
R515
ZD501
ZD500
TA501
R512
R514
C504
VBAT
R511
+VDD_IO_HIGH
C507
8
GND
ICDL 9
IMIN 6
2 USB
7
USBON
4 _CHG
5 _EN
_PPR
3
U502
10
BAT
1
CRDL
GND
11
TA502
USB_CHG_ON
END_OF_CHG
AUX_ON
+VBUS
CHG_ON
V_EXT_CHARGE
MES_BATT