Epson LX-300 Service Manual page 98

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