Epson LQ-2550 Technical Manual page 290

Signal
Pin No.
3
IMSN
4 AGN —
+ 5
11
12 PWSN
13 —
1 CSEN
2 GH —
+ 3 5
5
6
7
8
9
10
CSHL
14
15
16 FNAB
17 FTH
—
18
Pin No. Signal
H2
H7
4
7
2 C5
18
17 HI 1
16
3 C6
14
8
9
5 , 6
15 H 6
11
10
1 2 , 1 3
C8
Table A-25. CN9 Pin Assignments
I Scan data
Analog ground
+ 5 VDC
o
I Paper width signal
Ground
o
Ground (for drive circuits)
+ 3 5 VDC
o
o CS motor coil A
CS motor
o
coil B
CS
o
motor coil C
CS motor coil D
o
+ 5VDC
o
HF
o motor coil B
HF motor coil A
o
o Common line for coils A and B (+35 VDC)
I HF
motor thermistor
Ground
Table A-26. CN1 O Pin Assignments
o
o
solenoid #7
o
Common line (+35 VDC)
o
o
0
solenoid #1 1
o
Common
o line (+35 VDC)
o
o solenoid #22
o
solenoid #23
o Common line (+35 VDC)
o
o
o
Common line (+35 VDC)
o
Description
Description
A - 4 5
REV.-A