Epson 2070 - LQ B/W Dot-matrix Printer Service Manual page 157

LQ-2070 Service Manual
Table A-13. Connector Pin Assignments – CN14
Pin I/O
1 —-
2 —-
3 O
4 —-
5 O
6 O
7 —-
8 —-
9 O
10 O
Table A-14. Connector Pin Assignments – CN15
Pin I/O
1 I
2 O
3 —-
4 O
5 O
6 I
7 O
8 O
9 O
10 O
11 —-
12 O
13 O
14 —-
15 —-
16 I
17 I
18 I
19 I
20 I
21 I
22 —-
Table A-15. Connector Pin Asssignments- CN16
Pin I/O
1 I
2 —-
Rev.A
Signal Name
+35V +35 VDC line
+5V +5 VDC line
HOLD CSF motor hold signal
+35V +35 VDC line
-A CSF motor phase -A
B CSF motor phase B
GND Signal GND
GND Signal GND
A CSF motor phase A
-B CSF motor phase -B
Signal Name
COPEN Case open sensor signal
PAUSEL Pause LED signal
+5V +5 VDC line
POUTL Paper out LED signal
RESRVL Pitch select LED
PAUSSW Pause button signal
TBIN2L Tear off/ bin select LED
TBIN1L Tear off/ bin select LED
PITC2L Pitch select LED
PITC1L Pitch select LED
FONT3L Not connected
FONT2L Font LED
FONT1L Font LED
GND Signal GND
GND Signal GND
FONTSW Font button signal
PITCSW Pitch button signal
TBINSW Tear off/ bin signal
PSC Operate button signal
LDEJSW Load / Eject button signal
LFFFSW LF / FF button signal
FG Frame GND
Signal Name
RELEASE2 Release sensor 2 signal
GND Signal GND
Function
Function
Function
Appendix
A-9