Canon iR2020 Series Service Manual page 170

Chapter 4
[4]
4) Remove the screw [1], and then detach the heater cover [2].
[2]
5) Disconnect the connector [1], remove the screw [2], and then remove the
reader heater (left) [3].
[2] [3]
4-30
[1]
[3]
[2]
F-4-110
[1]
F-4-111
[1]
F-4-112