This comprehensive service and repair guide provides detailed technical information for the Denon AVR-1311, AVR-391, DHT-1311XP, and DHT-391XP receivers. It includes a wealth of knowledge for technicians and hobbyists alike, covering everything from troubleshooting common issues to performing intricate repairs. The manual is meticulously organized, offering clear explanations, schematics, and diagrams. You'll find step-by-step instructions on how to diagnose and repair various components, including power supply boards, amplifiers, and digital signal processing units. This valuable resource empowers you to confidently tackle any repair challenges and restore your Denon receiver to its peak performance.

The provided information refers to a range of audio-visual equipment manufactured by Denon, a renowned Japanese electronics company. The listed models—AVR-1311, AVR-391, DHT-1311XP, and DHT-391XP—represent a diverse selection of Denon's AV receivers and home theater systems. The "AVR" designation stands for "Audio Video Receiver," indicating devices that act as the central hub for a home theater setup, combining amplification for speakers, decoding for surround sound formats, and various audio/video signal switching capabilities. The "DHT" designation likely stands for "Digital Home Theater" and refers to compact, all-in-one systems that typically include an integrated receiver, DVD player, and speakers, offering a simplified home theater experience. Despite the variations in design and features, these Denon products share a common goal: to deliver immersive audio and high-quality video entertainment to home users. The Denon AVR-1311 and AVR-391 are standalone AV receivers, likely differing in their power output, processing capabilities, and connectivity options. The DHT-1311XP and DHT-391XP, on the other hand, likely represent compact home theater systems with integrated components. These Denon devices would have been designed to cater to a range of user needs and budget constraints. The "Service Repair Manual/Guide" mentioned in the product name suggests that the information pertains to technical documentation for repair technicians and service personnel. Such manuals would contain detailed information about the internal workings of these devices, including circuit diagrams, troubleshooting guides, and component specifications. They are essential for professionals who need to diagnose and repair malfunctions, ensuring the longevity and optimal performance of Denon's home theater products.