Flow Chart of Troubleshooting
VBAT
KEY_EN
R404
1005
U401
R403
4
1
VIN
VOUT
3
2
EN
GND
C420
1005
SOFT401
DIGIT400
DIGIT403
DIGIT406
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1005
LED400
LED401
C421
UP
INT
LED403
DIGIT401
DIGIT404
DIGIT407
DIGIT409
9-20
LED402
LED403
LED404
LED405