The student changes the ink cartridge regularly.
text: Let's see if its somewhere here.
text: Actually, can you remove the paper as well as the one inside.
text: As well as the inside of the scanner.
text: Okay.
text: Yeah.
text: You can press down on it.
text: Great.
text: Now please change the black cartridge.
text: Okay.
text: Great.
text: You can now close everything.