Epson Stylus 1500, Service Manual

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Table A-4. Connector Pin Assignments – CN3
Pin I/O Name Description
1 — GND Ground
2 I SW1 Switch 1 input signal
3 O LED9 LED 9 data
4 O LED8 LED 8 data
5 I SW2 Switch 2 input signal
6 I SW5
Switch 5 input signal
7 I SW0 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
1 O CR A Phase A drive signal
2 O 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