Denon PMA 501 Service Manual

The Denon PMA 501 is a high-quality integrated amplifier designed to deliver exceptional audio performance. It features a robust build, advanced circuitry, and a variety of inputs to accommodate different audio sources. 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 Media 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Integrated amplifier, multiple audio inputs, remote control, tone control, and headphone output.

Feature	Description
Multiple Inputs	Supports various audio sources including CD, phono, and AUX.
Power Output	High power output for driving speakers effectively.
Tone Control	Adjustable bass and treble settings for personalized sound.
Headphone Output	Dedicated output for private listening.
Remote Control	Convenient control from a distance.

Installation

Unpack and inspect contents. Place on a stable surface.

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

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

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

Set input source: Use the input selector to choose your audio source.
Adjust volume: Start at a low volume and gradually increase.
Configure tone settings: Adjust bass and treble to your preference.

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

Specifications

Power Output: 50W per channel (8 ohms).
Frequency Response: 10 Hz - 100 kHz.
Total Harmonic Distortion: < 0.1%.
Input Impedance: 47 kΩ (line).
Dimensions: 430 mm x 350 mm x 120 mm.
Weight: 7.5 kg.
Power Supply: AC 120V, 60Hz.

Controls and Settings

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

Remote: Power, volume, input selection, and tone control.

Connecting Devices

Connect audio sources using RCA cables. Ensure proper matching of inputs and outputs.

Turn off the amplifier and devices before connecting.
Match cables to ports (e.g., RCA to audio source).
Select input via the input selector on the amplifier.

Tip: Ensure all devices are powered off before making connections.

Playing Audio Media

Supports various audio formats through connected devices.

Select input source: Use the input selector to choose your audio source.
Adjust volume: Set to a comfortable listening level.
Enjoy your music: Play audio from your chosen source.

WARNING! Avoid excessive volume to prevent speaker damage.

Accessibility Features

Remote control for easy access. Ensure all controls are clearly labeled for ease of use.

Care & Cleaning

Unplug before cleaning. Use a dry cloth only; no liquids or aerosols.

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

Regulatory Information

This device complies with FCC regulations for Class B digital devices. For support, visit www.denon.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Incorrect input/source	Check input selection and connections.
Distorted sound	Overdriven volume	Reduce volume level.
Remote not working	Battery issue	Replace remote batteries.
Amplifier overheating	Blocked ventilation	Ensure proper airflow around the unit.

Service: For assistance, contact Denon support.