Epson 1170 - Manual (Page 85)

Cut-Sheet Feeder
Loading paper or envelopes with the high-capacity
cut-sheet feeder
1. Pull the lock levers forward on the left and right paper guides
to release them.
2. Slide the left paper guide until it is aligned with the triangle
mark; then lock it in place by pushing back on its lock lever.
Next, slide the right paper guide to roughly match the width of
your paper. Slide the paper support midway between the paper
guides.
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4-6 Using the Printer Options