Denon TU-800 Service Manual

The Denon TU-800 is a high-performance FM/AM tuner designed for audiophiles seeking superior sound quality and functionality. It features advanced digital signal processing, a high-precision tuning mechanism, and a range of connectivity options. 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. Operating the Tuner 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-performance FM/AM tuner, digital signal processing, remote control, multiple output options.

Feature	Description
Digital Tuning	Provides precise tuning for optimal reception
Remote Control	Convenient operation from a distance
Multiple Outputs	Includes RCA and optical outputs for versatile connectivity
FM/AM Reception	High-quality reception for both FM and AM bands
Preset Stations	Store favorite stations for quick access

Installation

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

Connect to audio system: Use RCA cables to connect to amplifier or receiver.
Connect antenna: Attach the FM antenna for optimal reception.
Plug into AC power.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the tuner; follow on-screen prompts.

Program stations: Use the auto-scan feature to find available stations.
Set language: Select preferred language in the settings menu.
Adjust audio settings: Use the menu to configure sound profiles.

CAUTION! Ensure stable surface; avoid placing near heat sources.

Specifications

Tuning Range: FM: 87.5 - 108.0 MHz, AM: 530 - 1700 kHz.
Output: RCA, Optical.
Power Consumption: 20W.
Dimensions: 17.1 x 12.2 x 3.5 inches.
Weight: 5.5 lbs.
Audio Output: 2.0V RMS.
Signal-to-Noise Ratio: 80 dB (FM).

Controls and Settings

Access settings via the front panel or remote control. Key controls include POWER, TUNING, PRESET, and MENU.

Remote: POWER, TUNING, PRESET, VOLUME, MUTE, MENU.

Audio settings include bass, treble, balance, and loudness options.

Connecting Devices

Connect to audio systems using RCA or optical outputs.

Turn off all devices before connecting.
Match cables to ports accordingly.
Select the appropriate input on your audio system.

Tip: Ensure all connections are secure for optimal performance.

Operating the Tuner

Use the remote or front panel to operate the tuner.

Power on the tuner.
Select FM or AM mode using the INPUT button.
Use TUNING to navigate through stations.
Store favorite stations using the PRESET button.

WARNING! Do not operate the tuner in wet conditions.

Accessibility Features

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

Care & Cleaning

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

CAUTION! Do not use abrasive cleaners; keep away from moisture.

Regulatory Information

This device complies with FCC Part 15 regulations. For support, visit www.denon.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Connections	Check all connections and settings.
Station not found	Antenna issue	Ensure antenna is properly connected and positioned.
Remote not working	Batteries	Replace batteries in the remote control.
Distorted sound	Signal interference	Adjust antenna position for better reception.

Reset: Menu > System > Reset if available.

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