HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
2-23
3.6 Sensors
Sensor name
Type
Located on
Regist front sensor
Photo sensor
High-voltage PS PCB
Regist rear sensor
Photo sensor
High-voltage PS PCB
Paper eject sensor
Photo sensor
Relay rear PCB
New toner sensor
Photo sensor
Relay front PCB
Toner LED PCB
(Light emission)
Photo sensor
Frame R
Toner sensor PCB
(Light reception)
Photo sensor
Frame L
Front cover sensor
Mechanical switch
Frame L
PE sensor
Photo sensor
PE EG sensor ASSY
Edge sensor
Photo sensor
PE EG sensor ASSY
MP PE sensor
Photo sensor
MP PE sensor ASSY
DX tray sensor
Mechanical switch
Relay rear PCB
Fig. 2-20
Frame R
Toner LED PCB
(Light emission)
Chute
Toner sensor PCB
(Light reception)
New toner sensor
(Relay front PCB)
High-voltage PS PCB
Regist rear sensor
Regist front sensor
MP PE sensor
PE EG sensor
Edge sensor
PE sensor
Paper eject sensor
(Relay rear PCB)
Frame L
Front cover sensor
DX tray sensor
Paper feed frame
Regist frame