Epson C31CC35021 User Manual page 22

2. Slide the paper ejection guide as wide as possible, and lock it.
When you install fanfold paper for the first time, or
paper width needs to be changed, continue to steps 3 and 4.
3. Open the fanfold paper cover and unlock the fanfold paper guide.
4. Slide the fanfold paper guide to align it with the fanfold paper
width, and lock it.
20 TM-C3400 User's Manual
when the