Epson MX-80 Technical Manual page 19

(5) Connectors CN5
(a) Use ................... Two CN5 connectors (one with male contacts and the
other with female contacts) are use to supply control sig-
nals between the control circuit board and driver circuit
board of the MX-80.
(b) Number of pins ........ 22 pins
(c) Pin assignment ......... Refer to Table 2.5 below.
Table 2.5 Pin Assignment of
eN5
Connector
Signal Name Description of Signal Direction
Pin No.
1 CRD
Phase D for Carriage Stepper Motor Drive
In
2
LFB
Phase B for Paper Feed Stepper Motor Drive
In
3
SLF
Line Feed Activate
In
4 CRC
Phase C for Carriage Stepper Motor Drive In
5 (80 columns)
-
Out
6
LFC
Phase C for Paper Feed Stepper Motor Drive
In
7 Head Trigger Timer Triggering Signal In
8
LFA Phase A for Paper Feed Stepper Motor Drive In
9 RS
Home Position Signal Out
10 LFD
Phase D for Paper Feed Stepper Motor Drive In
11
PTS
Clock Input Out
12
GL Ground
-
13 GL
Ground
-
14 +24 +24V DC
In
15 +24
+24V DC In
16
+24 +24V DC In
17 +24
+24V DC In
18 +5
+5V DC In
19
- - -
20
- - -
21 Vx
Power Failure Detection Signal In
22 +14 +14V DC
In
NOTE: "Direction" refers to the direction of signal flow as viewed from the driver circuit board.
2-7
REV. A