Copystar CS-2550 - Page 268

2FT
2-3-21
Connector Pin No. Signal I/O Description
YC1 1 SGND - Ground
Connected
to the main
PCB
2 +5V I 5 V DC power supply from MPCB
3 BUZERDRN I OPCB buzzer signal
4 SCAN0N I Key switch scan signal 0
5 SCAN1N I Key switch scan signal 1
6 SCAN2N I Key switch scan signal 2
7 SCAN3N I Key switch scan signal 3
8 SCAN4N I Key switch scan signal 4
9 SCAN5N I Key switch scan signal 5
10 SCAN6N I Key switch scan signal 6
11 SCAN7N I Key switch scan signal 7
YC2 1 KEY0 O Key switch return signal 0
Connected
to the main
PCB
2 KEY1 O Key switch return signal 1
3 KEY2 O Key switch return signal 2
4 KEY3 O Key switch return signal 3
5 KEY4 O Key switch return signal 4
6 KEY5 O Key switch return signal 5
7 KEY6 O Key switch return signal 6
8 KEY7 O Key switch return signal 7
9 KEY8 O Key switch return signal 8
10 KEY9 O Key switch return signal 9
11 LED4 I LED lighting selection signal 4
12 LED3 I LED lighting selection signal 3
13 LED2 I LED lighting selection signal 2
14 LED1 I LED lighting selection signal 1
15 LED0 I LED lighting selection signal 0
16 POWERKEYN O Power key operating output signal