Field Change Order LN03 Font Management Problem

This Field Change Order (FCO) details a mandatory update for the LN03 printer to address a font management problem where fonts fail to load correctly when multiple files are printed simultaneously, causing an Error 24. The revision also fixes an issue where right margin violations result in unsolicited error messages being sent to the host. The rework involves replacing specific control ROMs on the controller board (29-24988 or 29-25334) with new versions. The procedure requires powering off the device, using proper ESD protection, and performing a self-test after the upgrade to confirm installation of the 4.4 microcode.