System errors are printer malfunctions which mean an
on-site visit from a HP representative is necessary.
There are three types of messages displayed.

Continuable

You can continue printing, but the printer is not
functioning properly, image quality may well be
affected. It is strongly recommended that you contact
your HP representative, have the message and the
system error code ready with you to quote.

Sporadic

Turn the printer Off and then On; the printer will clear
itself. If this problem persists, contact your HP
representative.

Non-continuable

The printer will not work and you must
contact HP, have the message and the
system error code ready with you to quote.