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7-2
Front Control Board Circuit Diagram: Display
A
1
2
U1
U1
1
28
COM4
SEG5
SEG4
2
27
COM3
SEG6
SEG3
3
26
COM2
SEG7
SEG2
ROW0
4
25
DIG0
VCC
ROW1
5
24
COM1
DIG1
SEG1
ROW2
6
23
COM0
DIG2
SEG0
ROW3
7
22
DIG3
DIG15
ROW4
8
21
ROW14
DIG4
DIG14
LED_SCL
9
20
ROW13
SCL
DIG13
LED_SDA
10
19
ROW12
SDA
DIG12
11
18
ROW11
GND
DIG11
12
17
ROW5
ROW10
DIG5
DIG10
ROW6
13
16
ROW9
DIG6
DIG9
ROW7
14
15
ROW8
DIG7
DIG8
ET6240
ET6240
SYS_5V
LED_SDA
LED_SDA
LED_SCL
LED_SCL
3
XP9
XP9
4
4
3
3
2
2
1
1
4PIN/2.5mm
4PIN/2.5mm
4
A
B
SYS_5V
COM0
COM1
COM2
COM3
COM4
SYS_5V
ROW0
ROW1
ROW2
ROW3
ROW4
ROW5
ROW6
ROW7
ROW8
ROW9
ROW10
ROW11
ROW12
ROW13
ROW14
2
2
B
C
D
DIG5
DIG4
DIG3
DIG2
DIG1
U2
U2
DIG1
21
DIG1
DIG2
20
DIG2
K
19
K
F
18
F
DIG3
17
DIG3
J
16
J
B
15
B
G1
14
G1
DIG4
13
DIG4
A
12
A
11
A
NO CONNECT
B
C
LED
LED
D
E
F
G1
G2
H
J
K
L
M
N
DP
C
D
7-2
E
1
E
E
2
M
M
3
C
C
4
H
H
5
L
L
6
G2
G2
7
DP
DP1
8
N
N
9
D
D
10
DIG5
DIG5
E
1
2
3
4
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