Epson 2070 - LQ B/W Dot-matrix Printer Service Manual page 156

Appendix
Table A-8. Connector Pin Assignments – CN9
Pin I/O
1 O
2 O
3 O
4 O
5 O
6 —
7 —
8 —
9 O
10 O
11 O
12 O
13 O
14 O
15 O
Table A-9. Connector Pin Assignments – CN10
Pin I/O
1 O
2 O
3 O
4 O
Table A-10. Connector Pin Assignments – CN11
Pin I/O
1 O
2 O
3 O
4 O
5 O
Table A-11. Connector Pin Assignments – CN12
Pin I/O
1 I
2 —-
Table A-12. Connector Pin Assignments - CN13
Pin I/O
1 I
2 —-
A-8
Signal Name
HD3 Head data 3
HD11 Head data 11
HD2 Head data 2
HD19 Head data 19
HD7 Head data 7
+35V +35 VDC line
+35V +35 VDC line
+35V +35 VDC line
HD22 Head data 22
HD15 Head data 15
HD11 Head data 11
HD23 Head data 23
HD10 Head data 10
HD14 Head data 14
HD6 Head data 6
Signal Name
PF A PF motor phase A
PF B PF motor phase B
PF –A PF motor phase –A
PF –B PF motor phase –B
Signal Name
CR A CR motor phase A
CR –A CR motor phase –A
CR B CR motor phase B
CR –B CR motor phase –B
CR COM CR motor common
Signal Name
RELEASE1 Release sensor 1 signal
GND Signal GND
Signal Name
PG1 Platen gap sensor signal
GND Signal GND
LQ-2070 Service Manual
Function
Function
Function
Function
Function
Rev.A