Epson Stylus PHOTO 1270 Service Manual page 148

EPSON Stylus PHOTO 870/1270
Table 7-2. Connector Pin Assignment - CN5
Pin Signal Name
1 PE
2 GND
3 PEV
Table 7-3. Connector Pin Assignment - CN6
Pin Signal Name
1 ASF
2 GND
3 ASFV
Table 7-4. Connector Pin Assignment - CN7
Pin Signal Name
1 ASF-A
2 ASF-B
3 ASF-/A
4 ASF-/B
APPENDIX
I/O Function
I PE signal
−
GND
−
+5V
I/O Function
I ASF HP detection
- GND
- +5V
I/O Function
O ASF/Pump motor Phase A
O ASF/Pump motor Phase B
O ASF/Pump motor Phase /A
O ASF/Pump motor Phase /B
Connector Summary
Table 7-5. Connector Pin Assignment - CN8
Pin Signal Name I/O
1 GND - GND
2 ENB I CR encoder output B
3 VDD - +5V
4 ENA I CR encoder output A
5 GND - Ground
6 GND - Ground
7 LAT O Head data latch
8 GND - Ground
9 CH O CH signal
10 GND - Ground
11 VDD - +5V
12 GND - Ground
+42V to the nozzle selection
13 VHV -
circuit
14 GND - Ground
15 GND - Ground
16 GND - Ground
17 GND - Ground
18 COM - Common voltage
19 COM - Common voltage
20 COM - Common voltage
21 COM - Common voltage
Revision B
Function
148