Oki B721 Maintenance Manual

45487001TH Rev.1
7-10 /
Oki Data CONFIDENTIAL
7. Connection diagrams
(9) High-Voltage Poser Supply PCB
1
Board-99H
3
3
1
6
4
1
5
1
5
5
1 4
6
2
1
14
15
1
56
4
4
1
65
7
5
1
6
5
1
1
3
6
4
SB
DB
CH
OUTPUT
RETURN
45075399
SOLDER
22
99H
Green
C1
C2
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
CN1
CN2
CN3
CN4
CN5
CP2
CP3
CP4
CP5
D1
D2
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
JP1
JP2
JP3
JP4
JP5
JP6
JP7
JP8
JP9
JP12
JP13
JP14
JP15
JP16
JP17
JP18
JP19
JP20
JP21
JP22
JP23
JP24
JP26
JP27
JP28
JP29
JP30
JP31
JP32
JP33
JP34
JP35
JP36
JP37
JP39
JP40
JP41
JP42
JP43
JP44
JP45
JP46
JP47
JP48
JP49
JP50
JP51
JP52
JP53
JP54
JP55
JP56
JP57
JP58
JP59
Q1
Q2 Q3
Q4
Q5
Q6
R1
S3 S4
S5 S6
S7 S8
S9
S10
S11
S12
T1
T2
T3
T4
T5
T6
13
2
14
1
52
40
39
27
26
45075399
2
450989
CAUTION HIGH VOLTAGE
P
P
P
S
S
C505
C507
C508
C511
C513
C528
C534
C545
C547
C550
C557
C568
C569
D519
D520
D521
D522
D524
F501
IC507
Q516
R516
R569
R570
R574
R579
R580
R600
R605
R610
R611
R612
R613
R617
R621
R622
R623
R629
R634
R637
R638
R641
R642
R647
R648
R655
R657
R658
R660
R662
R663
R664
R665
R666
R667
R668
R669
R671
R674
R675
R676
Componet side Soldering side

Oki B721 Specifications

General

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