Oki MC770 series Maintenance Manual - page 216
45376001TH Rev.1
215 /
Oki Data CONFIDENTIAL
8. Connection diagrams
(13) SU Board
Component side
TEST81
TEST80
TEST79
TEST78
TEST77
TEST76
RS232C
R377
R376
R375
R374
R358
R357
R356
R355
R354
R353
R324
R323
R322
R321
R320
R319
R318
R317
R316
R315
R314
R313
R312
+,--
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23 45
23 46
23
4
7
23
4
3
23 48
285 9
28 5:
28 5;
285
6
2857
28 53
28 58
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1
285 4
28
9
5
28
99
28 9:
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@ AB
L3
L1
IC21
IC20
IC18
IC13
IC9
IC8
IC7
IC3
IC1
F3
F2
F1
CUIF
CP6
CP5
CCIS
C110
C105
C94
C93
C87
C86
C84
C83
C78
C77
C69
C68
C67
C60
C49
C43
C33
C32
C28
C26
C22
C21
C14
C12
C11
C10
C7
C6
C5
C4
C3
C2
C1
256
193
192
129
65
64
1
50
1
26
20
10
1
A
A
K
Y
AF
AF
26
20
10
1
A
L
L
A
9
1
9
1
5
1
8
4
1
1
10 9
2 1
3
11
1
1
24
1
7SU
Board-7SU
44973499
3
3
450407
1
9
1
9
A
L
L
A
128
48
33
32
17
16
1
49
64
Soldering side
TEST508
TEST507
TEST506
TEST505
TEST504
TEST503
TEST502
TEST501
RM512
RM511
R664
R662
R657
R652
R651
R642
R641
R625
R622
R619
R615
R612
R611
R600 R599 R598 R597
R583 R582 R581
R564
R563
R558
R557
R556
R545
R537
R536
R533
R532
R530
R529
R525
R504 R503
R502
R501
IC502
IC501
D503 D502 D501
C758 C757
C751
C750
C D E F
CD E
G
C D E E
C D E
H
I
J
K
L
M
N
O
P
I
J
K
Q
CD H D
I
J
R
S
I
J
R
K
C D
T
E
UVWV
M
N
P
X
M
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Y
Z
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WW
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27
28
30
2
26
34
33
50
47
37
23
22
1
18
15
14
11
10
7
6
3
2
1
44
3 3
38
48