Compuprint 4247-L03 - Manual (Page 115)

Solution: Check for obstructions to the forms path (cables, cords, or other
items). If you find an obstruction, remove or relocate it.
3. The forms do not meet specifications.
Solution:
The forms may be outside nominal specifications. See “Paper
Specifications” on page 87.
Chapter 5. Printer Maintenance and Troubleshooting 103