The student changes the black ink cartridge.
text: You see, you have to open uhm the flat above the first tray that you just opened.
text: Just pull on that one.
text: No, pull on uhm tray that's above the first tray.
text: Above that one. Just pull on the drawer.
text: Hold that down.
text: Now, take out and change the black printer cartridge.
text: And close the door.