Schematic of Combo
+12V
H3
+3.3V
+5V
H1
+3.3V
H4
+5V
+3.3V
+12V
+3.3V
+3.3V
+12V
+3.3V
+3.3V
H2
+12V
+3.3V
+3.3V
+5V
+3.3V
+3.3V
LD+
Batt_Gnd
+18V
Pin Number
Batt_In
OUTB+
LU+
SU-
SU+
SD-
LU-
OUTB-
LD-
P3
GND
SD+
Lid
R7
Resistance
5.1KΩ
R3
Resistance
1kΩ
C2
Capacitance
.1uF
R4
Resistance
1kΩ
Seat
GBD
R2
Resistance
1kΩ
R5
Resistance
.2 Ω
C1
Capacitance
270pF
C3
Capacitance
.1uF
R1
Resistance
1kΩ
D1
U1
Manufacturer Part Number
7805
U2
Manufacturer Part Number
L7812CV
U3
C4
Capacitance
100uF