General Electric Mark Century Supplementary Diagrams - Electrical Schematics for circuit boards starting 44CC3 - (Publication GEK-1510B - dated December 1974).

General Electric Mark Century 550T Control Electrical Diagrams Manual.

General Electric Mark Century 550TX Lathe Control Instruction Book with tape reader information. Includes: Operating, Programming, Test and Diagnostics.

General Electric Mark Century 1050 Control: Comprehensive Operating and Maintenance Manual. Includes Programming, Options, Custom Features, Interface, Interpretation of Logic Diagrams, Diagnostic Software and Hardware Trouble-shooting, Alphanumeric Display, Tape reader, Position feedback Systems, Servos, Power supplies, etc.

General Electric Mark Century 2000 CNC Systems Communications Manual. (Publication No. GEK-25387A)

General Electric Mark Century 2000 CNC Maintenance and Troubleshooting Guide. (Publication No. GEK-25382

General Electric Mark Century 2000 CNC Start-up and Adjustments Manual. (Publication No. GEK-25381B)

General Electric Mark Century 2000 Control Descriptions Manual. This names the functions of each BCB and sub-assembly separately and states the likely hardware source of three given problem symptoms.