Denon AVR-790 Service Manual

The Denon AVR-790 is a high-performance 7.1 channel AV receiver designed to deliver exceptional audio and video quality. It supports various audio formats, including Dolby TrueHD and DTS-HD Master Audio, and features multiple HDMI inputs for seamless connectivity with your devices. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Playing Audio/Video Media 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 7.1 channel audio output, multiple HDMI inputs, built-in AM/FM tuner, and advanced audio processing capabilities.

Feature	Description
HDMI Inputs	Multiple inputs for connecting various devices.
Audio Formats	Supports Dolby TrueHD, DTS-HD Master Audio.
Zone 2 Output	Allows audio playback in a second room.
On-Screen Display	Easy navigation through settings and options.
Remote Control	Full control of the receiver from a distance.
Speaker Configuration	Supports various speaker setups for optimal sound.
Firmware Updates	Keep the receiver up to date with the latest features.

Installation

Unpack and inspect contents. Place the receiver on a stable surface with adequate ventilation.

Connect speakers: Use appropriate speaker wire for connections.
Connect video sources: Use HDMI or component cables for video input.
Connect to power: Plug into a standard AC outlet.
Configure settings: Use the on-screen display for initial setup.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the receiver; follow on-screen prompts to configure settings.

Set up speakers: Use the speaker setup wizard for optimal configuration.
Program channels: Use the auto-scan feature for radio stations.
Adjust audio settings: Customize sound profiles as needed.
Update firmware: Check for updates to ensure the latest features.

CAUTION! Ensure stable surface; avoid overheating.

Specifications

Channels: 7.1 channel output.
Power Output: 100 watts per channel (8 ohms).
Audio Formats: Supports Dolby TrueHD, DTS-HD Master Audio.
HDMI Inputs: 4 HDMI inputs, 1 HDMI output.
Weight: 20 lbs.
Dimensions: 17.1 x 13.4 x 6.3 inches.
Power Consumption: 400 watts.
Operating Temperature: 0°C to 40°C.

Controls and Settings

Access settings via the on-screen display or front panel controls. Key controls include POWER, INPUT SELECTOR, VOLUME, and MENU.

Remote: POWER, INPUT, VOLUME, MUTE, and various audio settings.

Audio settings include bass, treble, balance, and surround sound options.

Connecting Devices

Connect devices using HDMI, optical, or analog inputs as needed.

Turn off all devices before connecting.
Match cables to ports (e.g., HDMI to HDMI).
Select input via the INPUT button on the remote.

Tip: Ensure all devices are powered off during connections.

Playing Audio/Video Media

Supports various audio and video formats.

Insert media: Use the appropriate input for your device.
Play: Select the media source using the INPUT button.
Adjust volume: Use the VOLUME control on the remote.
Stop: Press STOP to pause playback.
Skip: Use PREV/NEXT for tracks or chapters.

WARNING! Do not force connections; ensure proper insertion.

Accessibility Features

Closed Captions: Enable in settings for accessible viewing.

Care & Cleaning

Unplug before cleaning. Use a dry cloth only; avoid liquids.

CAUTION! Do not spray liquids; keep away from heat and moisture.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
Remote does not work	Obstacles/batteries	Remove obstacles; point at IR sensor; install fresh batteries.
No sound	Connections/mute	Ensure receiver is on; check connections; adjust mute.
Picture not clear	Settings	Adjust video settings in the menu.
Channels not programming	Antenna/menu	Use auto-scan in menu; ensure antenna connected.
Device not recognized	Connection issue	Check cables and connections; restart devices.

Reset: Menu > System > Reset if available.

Service: 1-800-555-0199; www.denon.com