Epson SureColor F7170 User Manual page 56

Confirm differences in tension on the right and left by lightly tapping on both edges of
the media.
Important:
As shown in the identified sections in the illustration below, if the tension of the left and
right edges of the media are different, the media that follows cannot be taken up correctly.
If there is slack on one side, flip the Manual switch to
tape, and then restart from Step 1.
to rewind the media, remove the
Basic Operations 56