The student presses down to the old cartridge and pops it up out, then inserts the new color cartridge.
text: You can do that on the inside of the front, there is a gate that needs to open
text: This is the black cartridge we will change the color one first.
text: Okay.
text: And you can just press down on it, and it will pop out.
text: Now, please change the black cartridge.