Table A-1. Connector Summary
Board Location Pins Description
C172 MAIN
CN1 36
Centronics parallel I/F
CN2 36
Type-B I/F (option)
CN3 20
Control panel (C172 PNL)
CN4 4
+42 V power supply from the power board
CN5 5
Carriage motor phase output
CN6 4
PF/PM motor phase output
CN7 22
Black head nozzle selector and common driver
CN8 17
Color head nozzle selector and common driver
CN9 3
Carriage home position sensor
CN10 2
Front paper-end sensor
CN11 2
Rear paper-end sensor
CN12 2
Black ink end sensor
CN13 2
Black ink cartridge sensor
CN14 2
Release sensor
CN15 2
Disengage sensor
CN16 5
• +5 V power supply from the power board
• Power ON signal (PSC)
C172 PSB/PSE
CN1 2
AC inlet (L/N)
CN2 9
DC output (+5 V / +42 V)
C172 PNL
CN1 20
(to C172 MAIN)
Appendix
A-4 EPSON Stylus 1500 Service Manual