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Brother International DCP 8040 Service Manual - Page 68
High-voltage power supply - clean drum
UPC - 012502610328
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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 APPENDIX 4.18 or 4.19 'HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM' in this manual. 24VI GND Current Regulator B1 Voltage Regulator VR52 Current Regulator B201 Q205 Voltage Regulator B251 Q253 VR251 Voltage Regulator Z101 VR101 Voltage Regulator VR102 Supply Roller Transfer Roller Cleaning Brush Development Roller Photosensitive Drum Corona Unit Fig. 3-18 3-12
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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