Lexmark T620 Guia Del Usuario página 26

Problem
Service Messages
Short Paper Error
20
2000-Sheet Drawer User's Guide
Action
A service message indicates printer failure that
may require service.
Turn the printer off, wait about 10 seconds, and
then turn the printer on.
If the error recurs, write down the error number, the
problem, and a detailed description. Call service.
Make sure the paper size selector knob is set to the
correct paper size. See page 12.