The student exchanges the black ink cartridge.
text: Open the cover on the top.
text: No, the top door.
text: Oh, oh, on the top of tray number one.
text: Open.
text: the white, the white part.
text: Yes.
text: And the take off the black cartridge at the.
text: Yes, that one.
text: Change to the other one.
text: Now close the cover.
text: All right.