Denon PMA 730 Service Manual

The Denon PMA 730 is a high-performance integrated amplifier designed to deliver exceptional audio quality. It features advanced circuitry, high-current power supply, and a range of connectivity options to enhance your listening experience. 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 Amplifier 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: High-current power supply, multiple input options, tone control, and remote control functionality.

Feature	Description
High-current power supply	Delivers robust power for dynamic sound reproduction
Multiple input options	Supports various audio sources including CD, phono, and AUX
Tone control	Allows adjustment of bass and treble for personalized sound
Remote control	Convenient operation from a distance
Speaker A/B switching	Connects multiple speaker sets
Headphone output	For private listening

Installation

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

Connect speakers: Use speaker wire to connect to the A/B terminals.
Connect audio sources: Use RCA cables for CD, phono, and AUX inputs.
Plug into AC power.

WARNING! Amplifier is heavy; lift with care to avoid injury. Ensure all connections are secure.

First-Time Setup

Power on the amplifier; follow on-screen prompts if applicable.

Select input source: Use the INPUT button to cycle through available sources.
Adjust volume: Use the volume knob or remote control.
Set tone controls: Adjust bass and treble as desired.

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

Specifications

Power Output: 70W per channel (8 ohms).
Frequency Response: 5 Hz - 100 kHz.
Total Harmonic Distortion: < 0.05%.
Input Sensitivity: 2.5 mV (phono), 200 mV (line).
Signal-to-Noise Ratio: 100 dB.
Dimensions: 434 x 151 x 360 mm.
Weight: 8.5 kg.

Controls and Settings

Access settings via the front panel or remote control. Key controls include power, input selection, volume, and tone adjustments.

Remote: POWER, INPUT, VOLUME, TONE, MUTE.

Connecting Devices

Connect speakers and audio sources using appropriate cables.

Turn off the amplifier and devices before connecting.
Match cables to ports (e.g., RCA to audio inputs).
Select input via the INPUT button.

Tip: Ensure all connections are secure before powering on.

Operating the Amplifier

Adjust volume and select input sources as needed.

Power on the amplifier.
Select the desired input source.
Adjust the volume to a comfortable level.

WARNING! Avoid excessive volume levels to prevent speaker damage.

Maintenance

Regularly clean the amplifier with a dry cloth. Avoid using liquids.

CAUTION! Do not expose to moisture or extreme temperatures.

Regulatory Information

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

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Connections	Check speaker and input connections.
Distorted sound	Volume too high	Reduce volume level.
Remote not working	Batteries	Replace remote batteries.
Input not switching	Faulty input	Check input connections and settings.

Reset: Unplug the amplifier for a few minutes to reset.

Service: Contact Denon support for assistance.