Epson TM-T20II Technical Reference Manual page 84

3
If the cover cannot be opened, move the stuck auto cutter blade with
the following method.
Remove the cutter cover by sliding toward the front.
Cutter cover
Turn the knob in the direction of the arrow until the triangle mark is appeared in the open-
ing. (This returns the cutter blade to the standby position.)
Triangle
Attach the cutter cover.
4
Remove the jammed paper.
5
Close the roll paper cover and turn on the printer.
84
Indent
Knob