Plugging In The Cartridge - Epson LX-90TM User Manual

5. Snap the cassette into place so that the exposed ribbon fits between
the print head and the silver ribbon guide.
6. Now turn the knob on the cassette in the direction of the arrow to
tighten the ribbon. As you turn the knob, make sure the ribbon
slips down into its proper place between the print head and the
silver ribbon guide. If it doesn't, guide it with a pen or a pencil.

Plugging in the Cartridge

In addition to your LX-90, you also need an Epson Printer Interface
Cartridge (PIC) that connects your computer to your printer. (These
are sold separately because each brand of computer uses a different
PIC.) The cartridge slides into the rectangular opening in the back of
your Lx-90.
Be sure you turn OFF all your computer equipment and
printer before inserting or removing the cartridge.
Caution
5