Epson Stylus Color 440, Service Manual

Page: 167 / 212

EPSON Stylus Color 440/640/740 Revision A
Chapter 7 Appendix 167
A.1.2.1 Connector Pin Assignment (Stylus Color 740)
Tables in this section provide connector pin assignments of the
C257MAIN, the main board equipped with Stylus Color 740.
C A U T I O N
Information contained in this section only applies to
Stylus Color 740.
If you need information on Stylus Color 440 and Stylus
Color 640, return to Section A.1.1.1.
Table A-11. Connector Summary of C257MAIN
Connector Function Table to refer to
CN1 Parallel I/F connector Chapter 1/Table 1-10
CN2 Serial I/F connector Chapter 1/Table 1-16
CN3 SUB I/F connector Chapter 1/Table 1-18
CN4 To HP sensor Table A-12
CN5 To PE sensor Table A-13
CN6 To ASF sensor Table A-14
CN7 To CR motor Table A-15
CN8 To PF motor Table A-16
CN9 To Printhead Table A-17
CN10 To Power supply board Table A-18
CN11 To Control panel Table A-19
Table A-12. Connector CN4
Pin Signal Name I/O Function
1 HP In Sensor detect signal
2 GND --- Ground
3 HPV --- Sensor power 5V)
Table A-13. Connector CN5
Pin Signal Name I/O Function
1 PE In Sensor detect signal
2 GND --- Ground
3 PEV --- Sensor power supply (+5V)
Table A-14. Connector CN6
Pin Signal Name I/O Function
1 ASF In Sensor detect signal
2 GND --- Ground
3 ASFV --- Sensor power supply (+5V)
Table A-15. Connector CN7
Pin Signal Name I/O Function
1 CRA Out Phase drive signal (A)
2 CR-A Out Phase drive signal (-A)
3 CRB Out Phase drive signal (B)
4 CR-B Out Phase drive signal (-B)
Table A-16. Connector CN8
Pin Signal Name I/O Function
1 PFA Out Phase drive signal (A)
2 PFB Out Phase drive signal (B)
3 PF-A Out Phase drive signal (-A)
4 PF-B Out Phase drive signal (-B)