Brother HL-5280DW Service Manual

CHAPTER 2 THEORY OF OPERATION
Confidential
2-2
2. ELECTRONICS
2.1 General Block Diagram
High-voltage
power supply
Low-voltage power supply
Fuser thermistor
Main PCB
Regist front
sensor
Main fan
Sensor PCB
(PE+PEDGE)
LT Sensor PCB
(PE+PEDGE)
Regist rear
sensor
Toner
sensor PCB
(Light
reception)
Toner LED PCB
(Light emission)
Power supply fan
Interlock switch
(Cover sensor)
MP sensor PCB
Tray1 solenoid
Regist solenoid
Main motor
Panel PCB
DX solenoid
(HL-5250DN/5270DN)
DX unit sensor PCB
MP solenoid
LT solenoid
Front relay
PCB
New toner
sensor
Rear relay
PCB
Paper eject
sensor
LT PCB
LT1
Wireless LAN
(HL-5280DW)
Polygon motor
Laser diode PCB
LT Sensor PCB
(PE+PEDGE)
LT solenoid
LT PCB
LT2
Fig. 2-2

Brother HL-5280DW Specifications

General

Brand	Brother
Model	HL-5280DW
Category	Printer
Language	English