Epson 440 - Manual (Page 168)

EPSON Stylus Color 440/640/740 Revision A
Chapter 7 Appendix 168
Table A-17. Connector CN9
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 detect signal
4 GND --- Ground
5 LAT Out Head data latch pulse output
6 GND --- Ground
7 SI6 Out Head data output (6)
8 SI5 Out Head data output (5)
9 SI4 Out Head data output (4)
10 SI3 Out Head data output (3)
11 SI2 Out Head data output (2)
12 SI1 Out Head data output (1)
13 GND --- Ground
14 CLK Out Clock pulse for head data transfer
15 GND --- Ground
16 NCHG Out Head all on pulse output
17 GND --- Ground
18 VDD --- Logic power supply (+5V)
19 GND2 --- Ground
20 GND2 --- Ground
21 GND2 --- Ground
22 GND2 --- Ground
23 COM --- Head drive power supply
24 COM --- Head drive power supply
25 COM --- Head drive power supply
26 COM --- Head drive power supply
27 VHV --- Head drive voltage control signal
Table A-18. Connector CN10
Pin Signal Name I/O Function
1 +42V --- Mechanism drive power supply
2 +42V --- Mechanism drive power supply
3 GND --- Ground
4 GND --- Ground
5 PSC Out Power supply switch output signal
6 GND ---- Ground
7 GND --- Ground
8 +5V --- Logic power supply
Table A-19. Connector CN11
Pin Signal Name I/O Function
1 SW2 In Panel switch on/off (2)
2 SW0 In Panel switch on/off (0)
3 PSC In Power on/off switch
4 SW1 In Panel switch input (1)
5 LED3 Out LED drive signal (3)
6 +5V ---- Logic power supply
7 +5V ---- Logic power supply
8 LED2 Out LED drive signal (2)
9 GND ---- Ground
10 LED1 Out LED drive signal (1)
11 GND ---- Ground
12 LED0 Out LED drive signal (0)