Epson 1290 - Manual (Page 25)

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6. Gently insert the end of the paper into the printer as far as it
will go, flush with the right edge guide. Slide the left edge
guide against the left edge of the paper.
7. To load the paper correctly, you must hold the paper in place
with your hand while you press the z roll paper button. The
paper feeds into the printer.
8. Open the printer cover and make sure that the paper is
feeding correctly. If it is not straight, depress the z roll paper
button for more than three seconds to eject the paper. The
error light is on. Press the
z roll paper button to clear the
error, then feed the paper again.