Epson LS57P1 - Manual (Page 108)

108 Caring For the TV
2 Lift up the ink cassette latch, then carefully pull out the cassette.
3 Remove the new cassette from its package. Then remove the red paper strip from the end.
4 If the ink ribbon is slack, rotate the spindles to tighten it.
Caution
If the ink ribbon catches in
the opening, carefully
adjust it so it doesn’t tear.