This comprehensive service manual covers the Denon AVR-2311CI, AVR-2311, and AVR-891 audio receivers. It provides detailed technical information, repair procedures, and troubleshooting guides for these models. The manual includes in-depth diagrams, schematics, parts lists, and specifications, allowing technicians and enthusiasts to understand the inner workings of these receivers and effectively diagnose and repair any issues. This service manual is an essential resource for anyone seeking to maintain, service, or repair these Denon audio receivers.

The DENON AVR-2311CI, AVR-2311, and AVR-891 AV receivers represent a range of high-performance home theater solutions from the renowned audio manufacturer Denon. These receivers boast impressive features designed to elevate the home entertainment experience. The AVR-2311CI, the flagship model, stands out with its advanced features like Audyssey MultEQ XT32 room calibration, enabling it to automatically optimize the audio output to match the acoustics of your listening space. This model also supports 3D audio formats like Dolby TrueHD and DTS-HD Master Audio, delivering an immersive audio experience that transports you into the heart of the action. All three receivers support HDMI 1.4a with 3D video passthrough, allowing users to enjoy high-definition visuals with stunning clarity and depth. The AVR-2311 and AVR-891 models, while not featuring the Audyssey MultEQ XT32 calibration of the AVR-2311CI, still offer a comprehensive suite of capabilities. These receivers feature advanced audio decoding capabilities, supporting Dolby Digital, Dolby Digital Plus, DTS, DTS-ES, and DTS-HD audio formats, ensuring a high-fidelity listening experience for all your favorite movies and music. They also boast powerful amplification, delivering clear and dynamic sound reproduction across all frequency ranges. Additionally, the receivers offer flexible connectivity options, including multiple HDMI inputs and outputs, analog and digital audio inputs, and USB connectivity for playback from external devices. With their sophisticated features and user-friendly design, the DENON AVR-2311CI, AVR-2311, and AVR-891 AV receivers provide a compelling solution for home theater enthusiasts seeking a powerful and immersive audio experience.