Canon imageRUNNER 2270 Service Manual page 226

Chapter 6
3) Remove the screw [1], and detach the
fixing [2].
F-6-14
4) Lift the front of the laser unit [1], and
slide it to the front.
F-6-15
When sliding out the laser scanner unit, be
sure to take care not to touch the PCB
6-14
mounted to the laser scanner unit. (The
PCB is equipped with a laser scanner
intensity adjustment variable resistor, and
contact with the PCB can change the
adjustment setting.)