OKIDATA ML590 Service Manual page 271

The TSBs contain the latest information on firmware revisions, procedure changes, and
technical information updates.
Okidata distributes the TSBs through Okilink II. The TSBs are issued monthly.
590
This part is specific to the Microline 590 printer.
591
This part is specific to the Microline 591 printer.
Both
This part is used by both the Microline 590 and Microline 591 printers.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)