Line Printer

This document is an Engineering Change Order (ECO) log for the LP01 line printer. It includes two entries:

• LP01-00014: A documentation change from October 1972 regarding software shipping materials.
• LP01-C0015: A September 1973 hardware retrofit to prevent erroneous zone changes. This entry outlines specific wiring changes to the 212801-2 back panel and rework instructions for the 212530-1 circuit card in slot 4. It lists the serial numbers affected for field implementation during the next preventive maintenance (PM) cycle.