Epson STYLUS COLOR 3000 Service Manual page 166

+5V
6
+5V
24
LED0
23
LED1
25
LED2
22
LED3
18
LED4
17
LED5
16
LED6
15
LED7
14
LED8
13
LED9
3
LED10
N1
2
LED11
1
LED12
21
SW0
20
SW1
19
SW2
12
SW3
11
SW4
9
SW5
8
SW6
7
SW7
5
PSW
4
PSC
10
GND
+5V
SW0
1 2
SW1
1 2
SW2
1 2
SW3
1 2
SW4
1 2
SW5
1 2
SW6
1 2
SW7
1 2
SW8
1 2 3
6 5 4