This manual is addressed to the field engineers who will install and service the CMS 140/240 cash register. It provides all the information needed for a correct product maintenance. SUMMARY This manual is divided into six chapters. The first three chapters describe the operating, functional checks, and maintenance and repair procedures. Chapter 4 describes the disassembly and adjustment procedures. Chapters 5 and 6 describe the electronic circuitry and provide the schematics. The appendix holds the SPARE PARTS CATALOGUE.