The student exchanges the black ink cartridge.
text: The ink cartridges are on top of the drawer just open that.
text: The part that on top of the drawer *unintelligible* but just on top.
text: That's...
text: The black ink is the one on the first left.
text: It should have the white *unintelligible* thing on top.
text: So you can rotate it, so you can see.
text: Yeah stop, the
 white *unintelligible* should be on top, so now it's facing the right.
text: You should rotate it to the left.
text: You can put the blue cartridge back in and look at the, okay you see that white thing on the top of the cartridge it should be facing upwards.
text: Yeah that's a good direction.