Canon IMAGERUNNER 2020 - Manual (Page 254)

Clearing Paper Jams 8-7
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2
Push down the green fixing lever.
CAUTION
The parts located around the exit slot guide and the fixing unit are subject
to high temperature. When removing jammed paper, take care not to touch
anything in this area except the lever.
3
Hold the green knob, lift the upper cover of the fixing unit.