ENCAD CADJET 2 Service Manual page 366

8 7
LEFT_A
RIGHT_A
D
D[0..15]
D[0..15]
U 40
D 15
3
D1
D 14
4
D2
D 13
7
D3
D 12 8
D4
D 11 13
D5
D 10
14
D6
D 9
17
D7
D 8
18
D8
11
STPLTCHA CLK
1
RESET* CLR
74HCT273
C
D 7
D 6
D 5
D 4
D 3
D 2
D 1
D 0
LEFT_B
RIGHT_B
B
U 41
D 15
3
D1
D 14
4
D2
D 13
7
D3
D 12
8
D4
D 11
13
D5
D 10
14
D6
D 9
17
D7
D 8
18
D8
11
STPLTCHB CLK
1
CLR
74HCT273
A
8 7
6
+5V
C 70
0.1uF
R 106
U N U SED
T160
2
Q1 R 105
T274
5
Q2
6 T275
Q3 2.49K 1%
9 T276
Q4
12
Q5 R 104
15
Q6
16
Q7 4.99K 1%
19
Q8
R 103
+5V
10K 1%
MC34074
R 102
U 38A
T277
20K 1%
R125
20K
1%
R 101
T273
4.99K 1%
T261
R 100
T272
10K 1%
R 99
T271
20K
1%
R 124
U N U S ED
T165
2
Q1 R 123
T267
5
Q2
T268
6
Q3 2.49K 1%
T269
9
Q4
12
Q5 R 122
15
Q6
16
Q7 4.99K 1%
19
Q8
R 121
+5V
10K 1%
MC34074
R 120
T270 U 3 8D
20K 1%
R126
20K
1%
R 119
T266
4.99K 1%
T263
R 118
T265
10K 1%
R 117
T264
20K 1%
6
5 4
+24V +24V
C 67 D5
0.1uF 1N5818
+5V
5 2
IN1 OUT1
7 3
IN2 OUT2
D 8
6
EN
1N5818
R 98 2.49K
U39A
L298
1%
C 68
0.01uF
2
1
3
T159
+24V
+24V
D9
1N5818
10 13
IN1 OUT1
12 14
IN2 OUT2
11 D 12
EN
1N5818
R 116 2.49K U39B
L298
1%
C 71
0.01uF
13
14
12
5 4
3
D6
1N5818
R 91
0.5 1W
1%
D7
1N5818 R 96 R 97
2K 2K
0.1% 0.1%
R 90
T157
10K
0.1%
T156
6
7
R 89
T155
5
+5V
10K
MC34074
0.1%
U 38B
R 93
T158
2K
C 69
1%
R 94
+5V
2K
0.001uF
1%
D 10
1N5818
R109
0.5 1W
1%
D 11
1N5818
R114 R115
2K 2K
0.1% 0.1%
R 108
10K
0.1%
T162
9
8
R107
T161
10
+5V
10K
MC34074
0.1%
U 3 8C
R111
T164 T166
2K
C 72
1%
R112
+5V
2K
0.001uF
1%
ENCAD, Incorporated
Title
Enhanced Main Board (STEPPER.sch)
Size Document Number
B 205325
Date: Monday, November 04, 2002
3
2 1
J P5
1
2
3
D
4
5
6
+5V
R 92
1K
R 95
1K
1%
T278
2
1
TOO_LOW_A
3
U37A
C
LM393
+24V
B
T163
+5V
R 110
R113 1K
1K
1%
T279
6
7
TOO_LOW_B
5
U37B
LM393
A
R e v
F
Sheet 9 o f 9
2 1