This comprehensive service and repair manual for the Nokia E90 Communicator, also known as RA-6 (L3&4), is a valuable resource for technicians and individuals involved in the repair and maintenance of this advanced mobile device. The manual provides detailed instructions and technical specifications, covering all aspects of the Nokia E90's design and operation. It includes comprehensive diagrams, schematics, troubleshooting guides, and repair procedures, enabling users to diagnose and fix a wide range of hardware and software issues. Whether you are a professional repair technician or a tech-savvy individual, this manual will empower you with the knowledge and tools necessary to effectively address any challenges encountered with the Nokia E90 Communicator.

The Nokia E90 Communicator, released in 2007, was a groundbreaking device that aimed to bridge the gap between a smartphone and a laptop. It was a Symbian-powered smartphone with a unique dual-screen design, featuring a large 4-inch internal display that could be used for web browsing, email, and other productivity tasks. This display was hidden behind a smaller external screen, acting as a traditional mobile phone when closed. The E90's innovative design and feature set made it a compelling option for professionals seeking a powerful and versatile mobile device. Beyond its dual-screen functionality, the Nokia E90 Communicator boasted impressive hardware. It housed a 320 x 240 pixel QVGA internal display, a 1.5 GHz ARM processor, and 32 MB of RAM. The device also featured a 3.2-megapixel camera with autofocus and LED flash, allowing users to capture high-quality images and videos. Its built-in GPS receiver enabled navigation and location-based services. The E90 also included a full QWERTY keyboard, designed for efficient typing and productivity. Its high-capacity battery promised long-lasting performance, further enhancing its versatility. Unfortunately, the E90's Symbian operating system, while popular at the time, lacked the same app ecosystem as more modern mobile platforms, limiting its capabilities. However, the E90's unique design and powerful features made it a popular choice for professionals and tech enthusiasts alike, solidifying its place in mobile device history as a pioneer of the modern smartphone era.