This document pertains to the Nagra 4-S Reel, an Original generation device. Its core functionality is driven by an Analog Tape Transport Mechanism, with drive train options including Direct Drive and Belt Drive, further detailed within the schematic. While specific production years are not indicated, this schematic manual provides comprehensive technical information for the Nagra 4-S Reel, aiming to support its continued operation and maintenance.

The purpose of this English-language schematic manual is to serve as a definitive technical resource for dealership mechanics. It contains essential details such as circuit diagrams, wiring harness layouts, and component identification, offering the most complete available information. This manual is designed to facilitate in-depth understanding and effective servicing of the Nagra 4-S Reel, ensuring its optimal performance and longevity through accurate technical guidance.