Epson LX-300 Service Manual

LX-300 Service Manual
Appendix
Table A-1. Connector Summary
Board
Connector
Function
Pins
CN1
Parallel, serial interface
—
CN2
CR motor assembly
6
CN3
PF motor assembly
6
CN4
PSWPSE board assembly
5
CN5
Printhead
12
CN6
PE sensor
2
Main
Board
CN7
HP sensor
2
Assembly
CN8
Release lever position sensor
2
CN9
CS motor assembly (optional)
Color ribbon sensor (optional)
10
CN1O
CS motor assembly (optional)
Color ribbon sensor (optional)
10
CN11
CS motor assembly (optional)
Color ribbon sensor (optional)
10
Table A-2. Connector Pin Assignments - CN2
Pin I/o
Signal Name
Function
1
0 CR A
CR motor assembly Phase A
2
0
CR B
CR motor assembly Phase B
3
-
CRCOM
CR motor assembly Common
4
-
CRCOM
CR motor assembly Common
5
0 CR-A
CR motor assembly Phase –A
6
0 I CR-B I CR motor assembly Phase –B
Table A-3. Connector Pin Assignments - CN3
Pin I/o
Signal Name Function
1
0 PF A PF motor assembly Phase A
2
0 PF B PF motor assembly Phase B
3
-
PFCOM PF motor assembly Common
4 -
PFCOM
PF motor assembly Common
5
0 PF -A PF motor assembly Phase –A
6
0 PF -B PF motor assembly Phase –B
Table A-4. Connector Pin Assignments - CN4
Pin I/o
Signal Name
Function
1 I VP +35 VDC
2
I VP +35 VDC
3 - GND
Signal ground
4
-
GND
Signal ground
5 I VL
DC voltage for logic
6 I
VL
DC voltage for logic
,. .,,
+ .
L
. . . .
A-2
Rev.A

Epson LX-300 Specifications

General

Print Method	9-pin impact dot matrix
Interface	Parallel
Paper Handling	Friction feed, tractor feed
Weight	4.4 kg
Operating Environment	Temperature: 5 - 35°C, Humidity: 10 - 80%