Canon IMAGECLASS MF7400 - Manual (Page 8)

7
13
Hold the cartridge by its handle, then insert it into the
cartridge holder.
14
Push the cartridge holder into the machine as far as it will
go.
15
Rotate the lever to the locked position.
16
Close the front cover.
Be careful not to get your fingers caught.
17
Gently close the left cover until it clicks.
Be careful not to get your fingers caught.