Seiko I Infotech LP-1020 User Manual page 248

Warning (Classification: W)
14-32
Description : A warning state such as being low on consumables, or
that a data error occurred.
Cause : A consumable is almost used up, or any failure in the
environment, settings, or data occurred.
Measure : Take appropriate measures to remove the cause.
*Log example in case of HPGL format error
"W DATA 0201"