Epson LQ-2550 Technical Manual page 276

Input Side
Pin No.
Terminal
Pin No.
26
53
50
68
28
52
23
5 4
25
2 4
6 7
6 6
12
14
13
64
2 7
9 122
10
65
33
36 V2
74 V3
77 V4
5
19 E2
46 E3
60
E4
31 EN 1
72 EN2
Table A-1 5. STK66082E Terminal Functions
Output Side
Terminal
18 i i i
45
48
Common line for printhead solenoids #1, #9, and #17
35
56
43
16
P2 Common line for printhead solenoids #5, #13, and #21
37
47
21
4 2
P3 Common line for printhead solenoids # 12, #20, and #24
3 2
20
2 2
4 9
P4
3 4 Common line for printhead solenoids #4, #8, and #16
5 9
61
5 7
7 6 P5 Common line
4
6
2
P6 Common line for printhead solenoids #3, # 11, and #19
78
1
6 2
15 H 2 1
P7 Common line for printhead solenoids # 14, #22, and #23
7 5
7
8
63
P8 Common line for printhead solenoids #6, #1 O, and #18
73
+ 3 5 VDC
GH
+35 VDC input OFF/ON (Fixed LOW)
Description
9
17
13
21
solenoid #12 drive
2 0
2 4
drive
8
1 6
7
15
for printhead solenoids #2, #7, and #15
11
19
2 2
2 3
10
18
A-3 1
REV.-A