Epson Stylus COLOR 900 Service Manual page 172

EPSON Stylus COLOR 900/900N
Table 7-5. Connector Pin Assignment - CN9
Pin Signal Name I/O
1 COMe O Power voltage for Nozzle Row E (Yellow)
2 GND2E — Ground for Nozzle Row E
3 GND2E — Ground for Nozzle Row E
4 ANODE5 I Row E temperature detection analog signal
5 B2 O Outputs dot selection signal to Row B (black)
6 GND — Ground
7 B1 O Outputs dot selection signal to Row A (black)
8 GND — Ground
9 C O Outputs dot selection signal to the cyan row
10 GND — Ground
11 M O Outputs dot selection signal to the magenta
row
12 GND — Ground
13 Y O Outputs dot selection signal to the yellow row
14 GND — Ground
15 CLK O Synchronization clock signal for dot selection
signal transmission
16 GND — Ground
17 LAT O Latch signal (sent when dot selection signal
transfer is complete)
18 GND — Ground
19 INV O Inversion signal of the print data
(High without data)
20 COB I Black ink cartridge in/out detection signal
21 COC I Color ink cartridge in/out detection signal
Function
Table 7-6. Connector Pin Assignment - CN10
Pin Signal Name I/O
1 PF A I/O Phase A Input/Output data
When inputting, sends current through the
motor from Phase /A to ground.
2 PF B I/O Phase B Input/Output data
When inputting, sends current through the
motor from Phase /B to ground.
3 PF /A I/O Phase /A Input/Output data
When inputting, sends current through the
motor from Phase A to ground.
4 PF /B I/O Phase /B Input/Output data
When inputting, sends current through the
motor from Phase B to ground.
Table 7-7. Connector Pin Assignment - CN11
Pin Signal Name I/O
1 CR A I/O Phase A Input/Output data
When inputting, sends current through the
motor from Phase /A to ground.
2 CR B I/O Phase B Input/Output data
When inputting, sends current through the
motor from Phase /B to ground.
3 CR /A I/O Phase /A Input/Output data
When inputting, sends current through the
motor from Phase A to ground.
4 CR /B I/O Phase /B Input/Output data
When inputting, sends current through the
motor from Phase B to ground.
Chapter 7 Appendix
Function
Function
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