Oki ML490 Maintenance Manual - Page 102
Connection Circuit Check for Printhead and SP/LF Motor
 |
View all Oki ML490 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 102 highlights
6.4 Connection Circuit Check for Printhead and SP/LF Motor (1) Printhead Signal N.C. HD1 HD3 HD9 HD11 +50V +50V HD17 HD19 HD21 HD22 HD20 HD18 +50V +50V HD12 HD10 HD4 HD2 HTEMP N.C. HD5 HD7 HD13 HD15 +50V +50V HD23 HD24 +50V +50V HD16 HD14 HD8 HD6 0V N.C. N.C. N,C, N.C. Connector pin number CN1 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 40 39 38 37 36 35 34 33 28 27 26 25 24 23 22 21 Thermistor (5k Ω at 25°C) 2 1 32 31 30 29 1 #1 #1 2 1 #3 #3 2 1 #5 #5 2 1 #7 #7 2 1 #9 #9 2 1 #11 #11 2 1 #13 #13 2 1 #15 #15 2 1 #17 #17 2 1 #19 #19 2 1 #21 #21 2 1 #23 #23 2 1 #2 #2 2 1 #4 #4 2 1 #6 #6 2 1 #8 #8 2 1 #10 #10 2 1 #12 #12 2 1 #14 #14 2 1 #16 #16 2 1 #18 #18 2 1 #20 #20 2 1 #22 #22 2 1 #24 #24 2 42114101 Rev.1 102 /
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71
-
72
-
73
-
74
-
75
-
76
-
77
-
78
-
79
-
80
-
81
-
82
-
83
-
84
-
85
-
86
-
87
-
88
-
89
-
90
-
91
-
92
-
93
-
94
-
95
-
96
-
97 -
98 -
99 -
100 -
101 -
102 -
103 -
104 -
105 -
106 -
107 -
108
-
109
-
110
-
111
-
112
-
113
-
114
-
115
-
116
-
117
-
118
-
119
-
120
-
121
-
122
-
123
-
124
-
125
-
126
-
127
-
128
-
129
-
130
-
131
-
132
-
133
-
134
-
135
 |
 |
42114101
Rev.1
102 /
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
40
39
38
37
36
35
34
33
28
27
26
25
24
23
22
21
32
31
30
29
N.C.
HD1
HD3
HD9
HD11
+50V
+50V
HD17
HD19
HD21
HD22
HD20
HD18
+50V
+50V
HD12
HD10
HD4
HD2
HTEMP
N.C.
HD5
HD7
HD13
HD15
+50V
+50V
HD23
HD24
+50V
+50V
HD16
HD14
HD8
HD6
0V
N.C.
N.C.
N,C,
N.C.
1
2
1
2
#1
1
2
#3
1
2
#5
1
2
#7
1
2
#9
1
2
#11
#1
#3
#5
#7
#9
#11
1
2
#13
#13
1
2
#15
#15
1
2
#17
#17
1
2
#19
#19
1
2
#21
#21
1
2
#23
#23
1
2
#2
#2
1
2
#4
#4
1
2
#6
#6
1
2
#8
#8
1
2
#10
#10
1
2
#12
#12
1
2
#14
#14
1
2
#16
#16
1
2
#18
#18
1
2
#20
#20
1
2
#22
#22
1
2
#24
#24
CN1
Thermistor (5k
Ω
at 25
°
C)
6.4
Connection Circuit Check for Printhead and SP/LF Motor
(1)
Printhead
Signal
Connector pin number