High-Voltage Power Supply Pcb Circuit Diagram - Brother HL-720 - B/W Laser Printer Service Manual

Appendix 9. High-Voltage Power Supply PCB Circuit Diagram, HL-720/ 730/730Plus
1 2 3
A
B
RB2
CB1 CB2
R37
C
D5 C31
D6
C1
+
D3
C4
R13
D4
C5
R11
+
C3
D
Q2
R5
R10
C2
R9
R6 R8
E
D2
R3
Q6
R2
F
G
H
1 2 3
4 5
D33
D101 D102
VR34 VR33
R38 VR31 R45
R101 R102 R103 R104
VR101
R105 R106 R107
C35
C32
C101 C102
R35 R36
R39 R40 R41 R42 R44
Q37
C33 C34
R34
Q201
R32
4 5
6 7 8
D58
D57
C54
C59
D55
D54
D51
D34
VR32 C52 C53
R52
C51
R68
R63
D52
R59
Q53
R81
R60
6 7 8
9 1 0 1 1
C62
R56 R70 R85 R86
R67
C60 C61
D63
R65
C58
C55
R60 R61
VR53
R82 R72
R51
NAME
9 1 0 1 1
V - 10
1 2
A
B
C
D
E
F
G
H
High-Voltage PS Circuit
1 2