Oki B721 Maintenance Manual

45487001TH Rev.1
7-5 /
Oki Data CONFIDENTIAL
7. Connection diagrams
7.2 Parts location
(1) Print Controll PCB (PU/CU PCB)
Componet side
R89
Board-99M
45075699
44
R70
WLPOW
USB3
USB1
TAGZA3
STKL
RSNS
RM31
RM30
RM28
RM27
RM26
RM24
RM22
RM17
RM14
RM13
R487
R486
R484
R464
R457
R453
R404
R273
R272
R271
R270
R260
R253
R247
R246
R245
R244
R241
R238
R237
R202
R170
R165
R87
R75
R74
R72
R71
R62
Q18
Q17
Q16
Q8
OSC10
LAN2
LAN
L14
L13
L12
IL
IC35
IC28
IC25
IC24
IC22
IC17
IC13
HVOLT
HEAT
HEAD0
FLCS
F17
F13
F5
F1
DUPSNS
DIMM
D20
D19
D18
CP15
C311
C310
C309
C308
C306
C305
C288
C287
C286
C285
C283
C279
C278
C277
C276
C275
C274
C273
C272
C271
C270
C269
C267
C266
C265
C263
C262
C260
C233
C226
C225
C224
C219
C215
C214
C211
C210
C209
C192
C172
C159
C156
C147
C146
C141
C124
C115
C65
C64
C62
C61
C57
C56
C49
C42
C19
C4
C3
BF27
BF26
BF14
BF13
BF7
BAT1
4
1
10
1
15
1
5
1
2 1
2
1
2
3
1
9
1
6
1
2
1
12
1
5
1
4
1
8
1
9
1
3
1
8 1
3
1
2
1
4
1
3
1
4
1
7 1
3
1
10 1
28
27
2
1
144
143
40
39
38
37
2
1
R R
A A
9
1
9
1
10
20
34
A K AA AP
34
20
10
1
AP
A
1
48
25
24
1
4825
24
1
42 39
38
22
21
17
1
4 1
3
2
4
8
9
12
28
3
1
32V
F1A
10
1
11
1
6
1
32
1
99M
F1A
32V
F2A
32V
1
2
1
2
1
9
32V
F2A
1
9
1
9
A A
R R
32V
F2A
32V
F2A
F2A
32V
32V
F4A
F2A
32V
F1A
32V
32V
F2.5A
F1A
32V
F2A
32V
1
451020
8
7
7
12
32
25
24
17
16
9
32V
F1A
R90
L11
1
1
R73

Oki B721 Specifications

General

Print Technology	LED
Resolution	1200 x 1200 dpi
Processor	533 MHz
Memory	256 MB
Connectivity	USB, Ethernet
Duplex Printing	Standard