High-Voltage Power Supply Unit - Brother HL-3450CN Service Manual

2.5

High-voltage Power Supply Unit

(1) Outputs and Function
No.
1 Charging
2 First transfer
3 Developing
bias
4 Second transfer
5 Transfer roller cleaning
6 Paper discharging
7 Drum cleaning
(2) Layout of Connector Pin Assignment
See Fig.4-42 below;
DBV
D508
(C)
DBV
(M)
DBV
(Y)
T201
D208
D204
D200
DBV
(K)
Function
Y, M
C, K
CHV
T101
ZD003
CBV ZD1
T501
T301
D504
D304
D501
3
D101
3
VR001
IC102
IC101
IC201
IP001
N38
3
IC001
D001
D503
D502 D201
IP101 D301
1 17
18
2
BCN1
Power Supply (P/S)
P/S Name
CHV (-)
CBV (-)
DBV (-A)
DBV (-B)
THV (+)
THV (-)
ACV ( )
DCV (+)
FCBV
T701
D804
D001
T801
C805
AC
D703
D004
VR701
VREF
IC801
D701 IC801
IC701
T702
FCBV
D400
D405
T401
M
Fig. 4-41
4-63
HL-3450CN SERVICE MANUAL
Approx. Output Voltage
(4.6KV) 600µA
200V 900V
200V 400V
200V 400V
400V 3,000V
600V
4.9KV
400V
200V 1,000V
THV
T801
ACV
T802
D801