Service manual

EPSON Stylus PHOTO 870/1270 Revision B
APPENDIX Connector Summary 148
Table 7-2. Connector Pin Assignment - CN5
Pin Signal Name I/O Function
1 PE I PE signal
2 GND
−
GND
3 PEV
−
+5V
Table 7-3. Connector Pin Assignment - CN6
Pin Signal Name I/O Function
1 ASF I ASF HP detection
2 GND - GND
3ASFV-+5V
Table 7-4. Connector Pin Assignment - CN7
Pin Signal Name I/O Function
1 ASF-A O ASF/Pump motor Phase A
2 ASF-B O ASF/Pump motor Phase B
3 ASF-/A O ASF/Pump motor Phase /A
4 ASF-/B O ASF/Pump motor Phase /B
Table 7-5. Connector Pin Assignment - CN8
Pin Signal Name I/O Function
1 GND - GND
2 ENB I CR encoder output B
3VDD-+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
13 VHV -
+42V to the nozzle selection
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