2HA/2HB
2-3-6
Connector Pin No. Signal I/O Description
YC4 1 +5 V O 5 V DC power supply for OPWB
Connected
to the opera-
tion unit
PWB
2 BUZERDRN O OPWB buzzer signal
3 SCAN7N O Key switch scan signal 7
4 SCAN6N O Key switch scan signal 6
5 SCAN5N O Key switch scan signal 5
6 SCAN4N O Key switch scan signal 4
7 SCAN3N O Key switch scan signal 3
8 SCAN2N O Key switch scan signal 2
9 SCAN1N O Key switch scan signal 1
10 SCAN0N O Key switch scan signal 0
YC5 1 SGND - Ground
Connected
to the LCD
PWB
2 +3.3V O 3.3 V DC power supply for LCDPWB
3 +3.3V O 3.3 V DC power supply for LCDPWB
4 LCDRS O LCDRS signal
5 LCDR_W O LCDR_W signal
6 LCDEN O LCDEN signal
7 LCDD0 O LCD display data signal 0
8 LCDD1 O LCD display data signal 1
9 LCDD2 O LCD display data signal 2
10 LCDD3 O LCD display data signal 3
11 LCDD4 O LCD display data signal 4
12 LCDD5 O LCD display data signal 5
13 LCDD6 O LCD display data signal 6
14 LCDD7 O LCD display data signal 7
15 SGND - Ground
16 SGND - Ground
YC6 1 LED0 O LED lighting selection signal 0
Connected
to the opera-
tion unit
PWB
2 LED1 O LED lighting selection signal 1
3 LED2 O LED lighting selection signal 2
4 LED3 O LED lighting selection signal 3
5 LED4 O LED lighting selection signal 4
6 LED5 O LED lighting selection signal 5
7 LED6 O LED lighting selection signal 6
8 LED7 O LED lighting selection signal 7
9 LED8 O LED lighting selection signal 8
10 LED9 O LED lighting selection signal 9
11 LED10 O LED lighting selection signal 10
12 LED11 O LED lighting selection signal 11
13 LED12 O LED lighting selection signal 12
14 KEY0 I Key switch return signal 0
15 KEY1 I Key switch return signal 1
16 KEY2 I Key switch return signal 2
17 KEY3 I Key switch return signal 3
18 KEY4 I Key switch return signal 4
YC7 1 +12 V I 12 V DC power supply from EPWB
Connected
to the
engine PWB
2 OVSYNC I Original scanning interval signal
3 RSTN I Reset signal
4 EGRN I Engine communication EGRN signal
5 SDIR I Engine communication SDIR signal
6 SBSY I Engine communication SBSY signal
7 PDMASKN I Printing image interval signal
8 EGSI O Engine serial communication transmission
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