Epson Stylus 1500, Service Manual

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Table A-7. Connector Pin Assignments – CN6
Pin I/O Name Description
1 O PFA Phase A drive signal
2 O PF B Phase B drive signal
3 O PF/A
Phase A drive signal
4 O PF/B Phase B drive signal
Table A-8. Connector Pin Assignments – CN7
Pin I/O Name Description
1 — VHV Head drive voltage VH
2 O NCHG Head ON signal for black head
3, 4, 5,
6, 7
O COM Common voltage for printhead drive
8, 9, 10,
11, 12,
16, 18,
20
— GND Ground
13 I TH Thermistor signal
14 — VDD Power supply for black head driver
15 I CO Black cartridge out sensor
17 O SI Black head serial data output
19 O LAT Latch signal for black head
21 O CLK Clock signal for black head
22 — FG Frame ground
Table A-9. Connector Pin Assignments – CN8
Pin I/O Name Description
1 I ID3 ID 3 signal
2 I ID2 ID 2 signal
3 I ID1 ID 1 signal
4, 5 — COM Common voltage for printhead drive
6, 7, 10,
12, 14
— GND Ground
8 I ID4 ID 4 signal
9 O SI Color head serial data output
11 O LAT Latch signal for color head
13 O CLOCK Clock signal for color head
15 I CO Color cartridge out sensor
16 — VDD Power supply for color head driver
Appendix
A-8 EPSON Stylus 1500 Service Manual