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U
24
23
IC801
REGULATOR
23
13
28
29
VDD5V
76
29
3.4V
0V
Q972
0.6V
23
0V
VDD3.3V
29
13
VDD5V
28
L702
54
22uH
3.3V
VDD3.3V
3.3V
3.3V
4.6V
Q821
51
0V
Q822
3.3V
0V
23
14.4V
Q872
23
IC721
E2PROM
14.4V
0V
D3.3V
+24.5V
-20V
12
11
D5V
L8002
M5V
22uH
12
11
4.7V
Q8022
11
12
0V
0V
V
24
Q802
R803
R807
5.6K
27K
0V
Q801
3.3V
3.2V
R973
R808
D971
15K
Q804
330
0V
Q971
D972
3.2V
0V
0V
Q805
Q803
0V
3.2V
3.3V
29
BU3.3V
IC821
2
0V
3
GND
VOUT
4
1
4.6V
VIN
STBY
D821
SW5V
BU
Q871
F801
14.4V
R873
4.5V
4.5V
470
14.4V
SW5V
4.9V
Q875
0V
Q873
4.7V
4.7V
0V
0V
Q874
D3.3V
+24.5V
-20V
12
11
USB5V
IC831
R8043
1K
1.6V
6
5
PWRGD
RT
0.8V
7
4
VSNS
SS/TR
0.5V
8
3
COMP
EN
2
0V
L8031
9
VIN
GND
22uH
1
10
BOOT
PH
C8035
5.1V
0.1
W
24
0V
CN901
24
∗
R814
C803
0
220u10
C804
0.1
79
SW5V
F831
R8109
R8110
470
1.2K
3.3V
4.7V
L8101
22uH
Q8104
0V
3.3V
0V
D8201
+24.5V
D8205
C8210
R8216
0.1
10
14.0V
14.0V
D5V
+14.4V
R8031 390K
R8032
C8031
3.9K
10P
1.5V
2.1V
R8303
3.2V
10K
14.4V
4.7V
11.1V
Q8021
0V
0V
X
DDX3028/3048/3058/318/4038/4038M
DDX4028BT/4038BT/4038BTM/4048BT/4058BT/418
to DC CORD
9
10
11
12
13
14
15
8
7
6
5
4
3
2
24
12
D1912
BU
12
BU
3.3V
Q8101
14.4V
14.4V
Q8102
R8115
13.1V
12.4V
5.6
R8106
2.2K
Q8103
12.3V
0V
+14.4V
IC851
15V
L8201
14.1V
14.4V
47uH
D8501
+14.4V
4.8V
Q8201
Q8202
R8206
0V
820
4.3V
R8215
1.5V
10
0V
0V
Q8203
1.5V
R8208
C8204
10K
6800P
R8209
R8210
4.7K
12K
12
11
+14.4V
D5V
IC802
6
PWRGD
0.8V
7
VSNS
SS/TR
0.7V
8
COMP
0V
L8001
9
GND
22uH
10
BOOT
PH
C8005
5.2V
0.1
MAIN UNIT (5/6)
Y
MA
M
D
D
F901 10A
D
16
17
18
D
1
FUSE
D
D
D
D
D
D
D901
D
D
D
D
D
C901
D
2700u16
EP
GND
SW5V
Q8301
R
0.1V
0V
2.5V
IC803
DC/DC
CONTROL
R8306
R8305
33K
2.2K
11
R8001 390K
R8002
C8001
3.9K
10P
5
1.5V
RT
4
2.1V
3
2.5V
EN
2
14.4V
VIN
1
11.2V
37
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