Denon DRM 555 Service Manual

The Denon DRM 555 is a high-performance cassette deck designed for audiophiles, featuring advanced recording and playback capabilities. It supports both Dolby B and C noise reduction systems, ensuring high-quality sound reproduction. The deck is equipped with a variety of features including auto-reverse, a digital display, and multiple input/output 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. Playing Cassette Media 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Dual cassette mechanism, Dolby B/C noise reduction, Auto-reverse, Digital display, Multiple input/output options.

Feature	Description
Dual cassette mechanism	Allows for continuous playback and recording.
Dolby B/C noise reduction	Reduces background noise for clearer sound.
Auto-reverse	Automatically plays the other side of the tape.
Digital display	Shows tape position and playback status.
Input/output options	RCA inputs and outputs for easy connectivity.

Installation

Unpack and inspect contents. Place on a stable surface away from direct sunlight.

Connect audio sources: Use RCA cables for input.
Connect to amplifier: Use RCA outputs to connect to your audio system.
Plug into AC power.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the unit; follow on-screen prompts if available.

Set tape type: Select the appropriate tape type for optimal playback.
Adjust audio settings: Use the menu to configure sound settings.

CAUTION! Ensure stable surface; avoid placing heavy objects on top.

Specifications

Type: Dual cassette deck.
Noise Reduction: Dolby B and C.
Frequency Response: 20Hz - 20kHz.
Signal-to-Noise Ratio: 70 dB.
Input/Output: RCA connectors.
Power Supply: 120V AC, 60Hz.
Dimensions: 17.5" x 10.5" x 5.5".

Controls and Settings

Access settings via the front panel controls. Key buttons include PLAY, STOP, REWIND, FAST FORWARD, and RECORD.

Display: Shows tape position, playback status, and settings.

Connecting Devices

Connect audio sources using RCA cables. Ensure all devices are powered off before connecting.

Match cables to ports (e.g., RCA to audio outputs).
Power on the devices after connections are made.

Tip: Ensure all connections are secure to avoid audio issues.

Playing Cassette Media

Supports standard cassette tapes.

Insert tape: Load the cassette into the deck.
Play: Press PLAY to start playback.
Stop: Press STOP to halt playback.
Rewind/Fast Forward: Use the respective buttons to navigate the tape.
Record: Press RECORD to start recording.

WARNING! Do not force the tape; eject properly.

Accessibility Features

Closed captions are not applicable for cassette media. Ensure volume levels are adjustable for accessibility.

Care & Cleaning

Unplug before cleaning. Use a dry cloth only; avoid 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	Connections	Check RCA connections and ensure the unit is powered on.
Tape not playing	Incorrect loading	Ensure tape is loaded correctly and not damaged.
Distorted sound	Dirty heads	Clean the tape heads with a suitable cleaning solution.
Remote not working	Battery issue	Replace batteries in the remote control.

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

Service: For service inquiries, contact Denon support.