Vector and Character Generator Control

This Engineering Change Order (FCO) log documents several revisions and mandatory rework procedures for the M7013 Vector and Character Generator module, specifically for the VT40 terminal. It covers multiple updates identified between November 1972 and October 1973, addressing issues such as module etch errors, character ROM order mistakes, logic failures, and wiring corrections. The document provides instructions for in-plant and field rework, including cut-and-wire modifications, and details prerequisites for these changes.