Kenwood KMR 555U Manual

The Kenwood KMR 555U is a single-DIN digital media receiver featuring Bluetooth connectivity, USB input, auxiliary input, AM/FM tuner with 18 presets, remote control, customizable illumination, built-in amplifier, and compatibility with various audio formats. Designed for automotive use with 12V DC power supply. 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. Bluetooth Connectivity 8. Audio Settings 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital media receiver, Remote Control, Bluetooth module, USB port, AUX input, AM/FM antenna connector, Illumination controls.

Feature	Description
Bluetooth connectivity	For hands-free calling and audio streaming
USB port	For connecting USB devices and charging
AUX input	3.5mm auxiliary input for external audio sources
AM/FM tuner	18 preset stations (6 AM, 12 FM)
Power output	50W x 4 channels maximum
Illumination	Customizable color and brightness settings
SOURCE	Cycles through available audio sources
VOLUME	Adjusts audio output level
MUTE	Mutes audio output
POWER	Turns unit on/off

Installation

Unpack and inspect contents. Ensure proper mounting in vehicle dashboard.

Disconnect vehicle battery: Remove negative terminal for safety.
Remove existing stereo: Use appropriate removal tools for your vehicle.
Connect wiring harness: Match color-coded wires to vehicle harness.
Connect antenna: Attach AM/FM antenna cable.
Mount unit: Secure in dashboard opening using mounting sleeve.
Reconnect battery and test functions.

WARNING! Disconnect battery before installation to prevent electrical shorts. Ensure all connections are secure.

First-Time Setup

Power on unit; follow initial setup procedures.

Set clock: Press and hold CLOCK button, adjust time with tuning knob.
Program radio stations: Tune to desired station, press and hold preset button.
Pair Bluetooth devices: Enter pairing mode, search for "KENWOOD KMR555U" on your device.
Adjust audio settings: Use AUDIO menu for bass, treble, balance, and fader.
Customize illumination: Set display color and brightness in SETUP menu.

CAUTION! Perform setup while vehicle is parked in safe location.

Specifications

Power Supply: 12V DC (negative ground)
Maximum Power Output: 50W x 4 channels
Rated Power Output: 22W x 4 channels
Bluetooth Version: 3.0 + EDR
USB Support: MP3, WMA, AAC playback
Frequency Response: 20Hz - 20kHz
Signal-to-Noise Ratio: >80dB
Dimensions: 178mm (W) x 50mm (H) x 159mm (D)
Operating Temperature: -20°C to +60°C

Controls and Settings

Access menus via FUNCTION button. Front Panel: POWER/VOLUME knob, SOURCE, AUDIO, PHONE, SETUP buttons.

Remote: POWER, SOURCE, VOLUME UP/DOWN, MUTE, PRESET UP/DOWN, PLAY/PAUSE, PHONE.

Audio Settings: BASS, TREBLE, BALANCE, FADER, LOUDNESS. Bluetooth: Pairing, phonebook access, call history. Display: Illumination color (red, blue, green, white), brightness adjustment. System: Clock setting, beep on/off, reset to factory defaults.

Connecting Devices

USB: Front panel port for flash drives and charging. AUX: 3.5mm input for external audio. Bluetooth: Wireless audio and phone connectivity.

Ensure unit is powered on and vehicle is in park.
Connect USB device: Insert directly into front USB port.
Connect AUX device: Use 3.5mm audio cable from device to AUX input.
Pair Bluetooth: Enter pairing mode, select "KENWOOD KMR555U" on your device.
Select source using SOURCE button.

Tip: Use high-quality USB cables and ensure Bluetooth devices are within 10 feet range.

Bluetooth Connectivity

Supports hands-free calling and audio streaming.

Pairing: Press PHONE button, select "Pairing" from menu, search on mobile device.
Audio streaming: Select BT AUDIO source, play audio from connected device.
Phone calls: Answer/end calls with PHONE button, use microphone for voice.
Phonebook access: Sync contacts via Bluetooth connection.
Disconnect: Turn off Bluetooth on device or select "Disconnect" in menu.

WARNING! Do not operate phone functions while driving. Use voice commands or pull over safely.

Audio Settings

Customize sound output for optimal listening experience.

Bass/Treble: Adjust low and high frequency response (-7 to +7)
Balance/Fader: Control speaker output distribution
Loudness: Enhance low-volume listening
EQ Presets: Flat, Powerful, Vocal, Custom
Source Level: Adjust volume differences between sources

Care & Maintenance

Clean with soft, dry cloth only. Avoid liquids and abrasive cleaners.

CAUTION! Do not use chemical cleaners on display. Keep USB port free of debris. Avoid extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device compliant. Bluetooth qualified device. Copyright © Kenwood Corporation. This device complies with part 15 of the FCC Rules. For support, visit www.kenwood.com or contact 1-800-536-9663.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/fuse	Check fuse connections; verify proper ground; test power wires.
Bluetooth not connecting	Pairing mode/distance	Enter pairing mode; ensure device within range; delete old pairing.
USB not recognized	Format/compatibility	Use FAT32 format; check file compatibility; try different USB device.
Poor radio reception	Antenna connection	Ensure antenna connected properly; check antenna cable for damage.
No sound from speakers	Wiring/settings	Check speaker connections; verify balance/fader settings; test speakers.

Reset: Hold SETUP button for 5 seconds to factory reset.

Service: 1-800-536-9663; www.kenwood.com