Denon AVR-988 Service Manual

The Denon AVR-988 is a high-performance 7.1 channel AV receiver that supports various audio and video formats, including Dolby TrueHD and DTS-HD Master Audio. It features advanced connectivity options, including HDMI inputs, USB ports, and network streaming capabilities. 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 surround sound, HDMI inputs, USB port, network streaming, remote control, and advanced audio processing.

Feature	Description
HDMI Inputs	Multiple inputs for high-definition video and audio.
USB Port	For direct playback of audio files from USB devices.
Network Streaming	Access to online music services and streaming.
Remote Control	Convenient control of all functions from a distance.
Advanced Audio Processing	Supports Dolby TrueHD and DTS-HD Master Audio.

Installation

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

Connect speakers: Use appropriate speaker wire for connections.
Connect video sources: Use HDMI or component video cables.
Connect to power: Plug into a suitable AC outlet.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the receiver; follow on-screen prompts for initial setup.

Program channels: Use the setup menu to configure channels.
Set audio preferences: Adjust settings for optimal sound.
Configure video settings: Set resolution and aspect ratio.

CAUTION! Ensure stable surface; avoid overheating.

Specifications

Channels: 7.1 channel surround sound.
Power Output: 100 watts per channel.
Audio Formats: Supports Dolby TrueHD, DTS-HD Master Audio.
Video Inputs: HDMI, component, composite.
Network Connectivity: Ethernet and Wi-Fi options.
Dimensions: 17.1 x 13.4 x 6.3 inches.
Weight: 22.5 lbs.

Controls and Settings

Access OSD via remote control or front panel buttons. Key controls include POWER, INPUT SELECTOR, VOLUME, and MENU.

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

Connecting Devices

Connect various audio and video devices using HDMI, optical, or RCA cables.

Turn off all devices before connecting.
Match cables to appropriate ports.
Select input source using the remote control.

Tip: Ensure all devices are powered off during connections.

Playing Audio/Video Media

Supports various audio and video formats for playback.

Insert media: Load DVD or connect USB device.
Play: Use remote to start playback.
Stop: Press STOP to halt playback.
Skip: Use NEXT/PREV buttons for navigation.

WARNING! Do not force media into the slot; eject properly.

Accessibility Features

Closed captions and audio descriptions can be enabled through the settings menu.

Care & Cleaning

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

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

Regulatory Information

Complies with FCC regulations for digital devices. For support, visit www.denon.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Remote not working	Batteries/obstacles	Replace batteries; remove obstacles.
No sound	Connections/mute	Check connections; ensure mute is off.
Picture issues	Settings	Adjust video settings in the menu.
Device not recognized	Connection issues	Check cable connections and power.

Reset: Use the reset option in the settings menu if necessary.

Service: Contact Denon support for further assistance.