Brother HL-4200CN Printer User Manual


 
TROUBLESHOOTING 5 - 24
Cleaning the Density Sensor
When the printer's density sensor is dirty, follow the steps below to clean it.
1
On the printer's right side, press the side of the
power switch marked O to turn the printer off.
2
Push up button A (1) and fully open the front cover
(2).
3
Grip the orange tabs at both ends of the transfer roll
and gently lift it out of the printer.
Lift the roll carefully to prevent waste toner from
spilling out.