High-Voltage Power Supply - Brother MFC-8220 Service Manual

CHAPTER 3 THEORY OF OPERATION
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
'HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM'
24VI
GND
Current
Regulator
T10
Voltage
Regulator
Current
Regulator
T402 Q405
Voltage
Regulator
T401 Q407
VR401
Voltage
Regulator
Z301 VR302
Voltage
Regulator
VR301
Fig. 3-18
in this manual.
Supply
Roller
Photosensitive
Development
Roller
3-12
APPENDIX 4.13 and 4.14
Transfer Roller
Cleaning Brush
Drum
Corona
Unit