Canon iR2020 Series Service Manual page 117

When installing the cassette heater unit, make sure that harness is not pinched.
2) Secure the cassette heater [2] using a screw [1].
3) Connect one harness [3] to the cassette heater harness [4].
4) Place the other harness [5] at the position shown below. Connect this connector to the heater of the cassette when connecting the cassette heater to the cassette
at the second or lower stage.
5) Attach the rear cover. (4 screws)
6) Turn on the main power switch of the host machine.
7) Turn on the heater switch [1] and make sure that the cassette heater is powered.
F-2-111
F-2-112
Chapter 2
2-43