HP Officejet J3680 All-in-One Printer - Manual (Page 29)

2. Flip the tray extender up toward you.
NOTE: When you use legal-size paper, leave the tray extender closed.
3. Tap a stack of paper on a flat surface to align the edges, and then check the paper
for the following:
•
Make sure it is free of rips, dust, wrinkles, and curled or bent edges.
• Make sure all the paper in the stack is the same size and type.
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