This Tektronix 4006 Computer Display Terminal Service Instruction Manual provides comprehensive technical information for servicing and troubleshooting the 4006 terminal. The manual offers detailed schematics, component identification, diagnostic procedures, and repair instructions. It covers a wide range of topics, including power supply analysis, signal tracing, board level repair, and adjustments. The manual includes extensive diagrams, illustrations, and tables to guide technicians through complex troubleshooting scenarios. It is an invaluable resource for anyone involved in the maintenance and repair of the Tektronix 4006 Computer Display Terminal.

The Tektronix 4006 Computer Display Terminal, a product of the renowned Tektronix company, stands as a testament to the innovative spirit of the early computer age. Released in 1974, this versatile terminal served as a crucial link between users and the burgeoning world of computing. Built with a sturdy and reliable design, the 4006 was a staple in countless offices, research labs, and educational institutions. It featured a striking design, with a sleek black and white color scheme and a distinctive, slightly angled front panel. The terminal incorporated a 12-inch, 1200-line phosphor display, capable of rendering crisp characters and graphics. A built-in keyboard allowed for seamless input, while a variety of communication protocols ensured compatibility with a wide array of host computers. The 4006's versatility extended beyond its physical attributes; it offered a wealth of features that enhanced user experience. Its ability to display both characters and graphics opened up new possibilities for data visualization and program development. Additionally, the terminal provided a range of control codes that allowed users to customize the display, including character size, page formatting, and screen refresh rates.

Beyond its practical applications, the Tektronix 4006 holds a significant place in the history of computing. It played a key role in the democratization of computing, making it accessible to a wider audience and contributing to the development of new applications and technologies. Its legacy lives on as a symbol of the early days of personal computing, inspiring future generations of engineers and developers. Although the 4006 is no longer in active production, its design and features continue to serve as a valuable reference point for those studying the evolution of computing technologies. The 4006 stands as a testament to the ingenuity and innovation that defined the golden age of personal computing, a time when the boundaries of what was possible were constantly being pushed and reimagined.