Brother MFC-8220 - 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 4.13 and 4.14
‘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
T10
T402 Q405
T401 Q407
Voltage
Regulator
Z301 VR302
24VI
GND
VR401
Voltage
Regulator
VR301
Cleaning Brush
Fig. 3-18