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Flow Chart of Troubleshooting
7-2
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VBAT
C425
C433
C426
R410
C432
L403
R411
R426
R434
R432
C
4
1
2
C431
C413
VCC_BATT
A
2
B
1
GND
3
VCC
5
Y
4
R
4
1
9
U409
C423
VBAT
VCC30
R425
VBAT
VPLL13
C419
3
NC
1
OUT
2
VDD
U408
4
GND
R431
C427
T
P
4
0
2
C444
VCC_BATT
TA440
VSRAM11
VCC30
C409
OUTY 4
VCC
5
U404
2
GND
INA
1
INB
3
VBAT
VCORE14
TA439
6
V
2
V
4
2
3
2
5
V
5
V
7
3
3
1
_MR
_
R
S
O
3
0
_SLP
3
9
1
2
PWM3
1
7
RAMP
1
9
REF
1
0
S
C
L
1
1
SDA
S
L
P
IN
5
S
R
A
D
2
9
V
1
4
2
2
O
N
4
5
PG1
3
6
1
5
PG2
2
6
P
G
3
9
P
K
3
8
PV1
1
3
PV2
P
V
3
2
8
LX1
3
7
1
4
LX2
2
7
L
X
3
4
2
N
C
N
C
4
3
ON1
3
5
O
N
2
2
1
ON3
3
4
3
2
CC3
F
B
1
1
7
F
B
2
3
3
FB3
1
8
GND
GND
4
1
1
6
IN
2
4
IN
4
5
U405
B
K
B
T
2
2
0
BYP
4
0
CC1
8
C
C
2
R429
T
P
4
0
3
VBAT
VCORE14
VCC30
R422
VCC30
R424
C438
VCC_BATT
VCC30
VCC_BATT
C411
VCC_BATT
C443
6.3V
C405
C408
C424
C420
R427
R414
C410
C422
C421
VBAT
L401
R433
PWR_SCL
PWR_SDA
nVCC_FAULT
nBATT_FAULT
nBATT_FAIL
nPOWER_FAIL
nGPIO_RESET
nPOWER
SYS_EN
nRESET_IN
V_BKBT
PWR_EN
PWR_EN
PWR_EN
nCHARGE_OFF
VCC_BATT
R408
GND
5
VCC
4
Y
U401
2
A
1
B
3
C401
C404
C403
GND
4
NC
3
OUT
1
VDD
2
U400
VBAT
nPOWER_FAIL