Anything blue is meant to be replaced. The paper pickup rollers are
the first suspect. I don't know that printer, but the release
mechanism for most rollers is difficult if you havn't seen how to
release them. Usually that roller wears asymetricly causing the paper
to feed at a slight angle or the paper fails to pick-up.

SOMETIMES you can turn the paper upside down and the printer won't jam
because the curl of the paper is different, but it usually means it
won't last long.