Epson Stylus Pro 10600 Reference Manual page 248

Caution:
c
During operation, be sure to stay out of the sensor detection area.
Interrupting the sensor beam can cause paper to be taken up under
tension and adversely affect printing.
Light
detector
1. Press the Paper Source button on the printer repeatedly until
the Roll Cutter Off light comes on.
2. Set the direction of take-up with the Auto switch on the
control box.
To wind forward
3. Send a print job to the printer. The printer starts printing. The
Auto Take-up Reel Unit takes-up the roll paper in the
direction you set in step 2.
Light detector sensor
detection area
To wind backward
Light
emitter
-247