Epson Stylus Color 740 Service Manual

EPSON Stylus COLOR 440, 640, and 740 Appendix
149
Table A-6. HP Sensor Connector (CN5)
Pin Signal Name I/O Function
1 HP In Sensor detect signal
2 GND — Ground
3 HPV — Sensor power supply(+5V)
Table A-7. CR Motor Connector (CN6)
Pin Signal Name I/O Function
1 CRA Out Phase drive signal (A)
2 CRB Out Phase drive signal (B)
3 CR-A Out Phase drive signal (-A)
4 CR-B Out Phase drive signal (-B)
Table A-8. PF Motor Connector (CN7)
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)
Table A-9. Printhead Connector (CN8)
(Stylus COLOR 440: C206MAIN-B and C255MAIN only)
Pin Signal Name I/O Function
1 BCO In Black ink cartridge detect signal
2 CCO In Color ink cartridge detect signal
3 THM In Thermistor sensor output
4 GND — Ground
5 LAT Out Head data latch pulse output
6 GND — Ground
7 SI2 Out Head data output (2)
8 GND — Ground
9 SI1 Out Head data output (1)
10 GND — Ground
11 CLK Out Clock pulse for head data transfer
12 GND — Ground
13 NCHG Out Head all on pulse output
14 GND — Ground
15 VDD — Logic power supply (+5 V)
16 GND2 — Ground
17 GND2 — Ground
18 GND2 — Ground
19 COM — Head drive power supply
20 COM — Head drive power supply
21 COM — Head drive power supply
22 VHV — Head drive voltage control signal
23 VHV — Head drive voltage control signal

Epson Stylus Color 740 Specifications

General

Brand	Epson
Model	Stylus Color 740
Category	Printer
Language	English