High-Voltage Power Supply - Brother HL 1240 - B/W Laser Printer 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.
R1
24VI
GND
Current
Regulator
B1
Voltage
Regulator
VR22
Current
Regulator
B102 Q81
Voltage
Regulator
B101 Q101
Voltage
Regulator
Z51 VR51
Development
Roller
Fig. 3-20
3-16
Transfer Roller
Supply
Roller
Photosensitive
Drum
Corona
Unit