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Flow Chart of Troubleshooting and Circuit Diagrams
5-2
+VB
A
T
T
PO
WER
C151
10NF
1K
R100
D100
MCL4154
U106
UMC5NTL
1
2
3
4
5
100NF
C112
R108
VDD3.0
100K
R106
1
2
3
4
5
10NF
C120
C103
10NF
LED_3V3
DCV
OL
T
PO
WER
DCIN
ON_OFF
BB_PWR
LED_3V3
R
TC_VCC
C101
10UF
6.3V
ON/OFF
VIN
15
V
OUT
C100
6.3V
100UF
UMN1
D110
VIN
1
V
OUT
5
C114
6.3V
10UF
3
GND
LP2985AIM5-3.3
U100
BYP
ASS
4
2
R110
100K
C123
100NF
D
VCC2.5
6.3V
B
A
T100
RB414_IV02N
C102
100NF
R107
100K
U108
LP3985IM5X-2.5
4
BYP
ASS
GND
2
3
ON/OFF
1
VIN
V
OUT
5
100K
R105
C113
10UF
6.3V
10NF
C150
C111
10NF
U104
LP2985AIM5-3.0
BYP
ASS
4
GND
2
ON/OFF
3
100K
1UF
C105
100NF
C128
10NF
C104
A
VCC2.5
100K
R109
2
GND
3
ON/OFF
1
V
IN
V
OUT
5
U102
LP3985IM5X-2.5
BYP
ASS
4
10UF
C122