Brother mfc8440 - High-Voltage Power Supply

CHAPTER 3 THEORY OF OPERATION
3-12
1.5.2 High-voltage power supply
The high-voltage power supply generates and outputs the voltages and currents for the
charging, development and transfer functions.
For the circuit diagram of the high-voltage power supply PCB, see APPENDIX 4.18 or 4.19
‘HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM’ in this manual.
Transfer Roller
Supply
Roller
Photosensitive
Drum
Development
Roller
Corona
Unit
Current
Regulator
Current
Regulator
Voltage
Regulator
Voltage
Regulator
B1
B201 Q205
B251 Q253
Voltage
Regulator
Z101 VR101
VR52
24VI
GND
VR251
Voltage
Regulator
VR102
Cleaning Brush
Fig. 3-18