Flow Chart of Troubleshooting and Circuit Diagrams
5-2
R2
4
S2
PCB FIXING HOLES(1.9)
One Point Contact
SI3865DV
U474
2
D2
3
D2
5
ON/OFF
R1,C1
61
C328
10UF/6.3V
10NF
C326
C536
10NF
1UF
ALERT_VCC
R738
C748
1K
2
GND
NC
4
3
ON/OFF
VIN
15
VOUT
10UF/6.3V
C535
D441
MCL4154
U621
LP2981AIM5X-3.3
H403
100UF
C579
100NF
C427
1
VIN
VOUT
5
C751
100NF
LP2981AIM5X-3.0
U620
2
GND
4
NC
ON/OFF
3
100K
R583
H400
100PF
C305
10UF/6.3V
C306
C555
27PF
10NF
C307
BAT1
RB414
1K
R584
10NF
C587
1UF
1UF
C749
H401
C318
10NF
C319
VCC
AVCC
GND
2
4
NC
ON/OFF
3
VIN
1
5
VOUT
U619
LP2981AIM5X-3.0
H402
10UF/6.3V
C750
LP2981AIM5X-3.3
U470
2
GND
4
NC
ON/OFF
3
VIN
15
VOUT
RTC_VCC
VOUT
C436
100UF
+VBATT
+VBATT
RTC_3V3
POWER