Epson Stylus 1500 - Page 161

Table A-4. Connector Pin Assignments – CN3
Pin I/O Name Description
1—GND
Ground
2ISW1
Switch 1 input signal
3 O LED9
LED 9 data
4 O LED8
LED 8 data
5ISW2
Switch 2 input signal
6ISW5
Switch 5 input signal
7ISW0
Switch 0 data
8 O LED7
LED 7 data
9 O LED6
LED 6 data
10 LED5
LED 5 data
11 — +5 V
Logic line
12 O LED1
LED 1 data
13 O LED0
LED 0 data
14 I PSW
Power switch
15 I PSC
Power scan
16 I SW3
Switch 3 input signal
17 I SW4
Switch 4 input signal
18 O LED3
LED 3 data
19 O LED2
LED 2 data
20 O LED4
LED 4 data
Table A-5. Connector Pin Assignments – CN4
Pin I/O Name Description
1, 4 — GND
Ground
2, 3 — +42 V
+42 V power supply
Table A-6. Connector Pin Assignments – CN5
Pin I/O Name Description
1O CR A
Phase A drive signal
2O CR B
Phase B drive signal
3 O CR/A
Phase A drive signal
4 O CR/B
Phase B drive signal
5 — CRCOM
Common (+42 V)
Appendix
EPSON Stylus 1500 Service Manual A-7