Manual for Kenwood Car Stereo 51004301

The Kenwood Car Stereo 51004301 is a high-quality in-dash car audio system featuring AM/FM radio, CD player, USB connectivity, auxiliary input, Bluetooth compatibility, and advanced audio controls. With built-in amplifier, preset stations, seek tuning, and customizable sound settings, this stereo delivers superior audio performance for your vehicle. 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 Media 8. Bluetooth Connectivity 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with CD player, Remote Control, USB port, AUX input, Bluetooth antenna, Speaker outputs, Power connector.

Feature	Description
AM/FM Radio	Digital tuner with preset stations and seek function
CD Player	Plays audio CDs and CD-R/RW
USB Port	For USB flash drives and device connectivity
AUX Input	3.5mm jack for external audio devices
Bluetooth	Wireless audio streaming and hands-free calling
Power Connector	12V DC vehicle power connection
Speaker Outputs	4-channel output for front and rear speakers
VOLUME	Adjusts audio level
SOURCE	Cycles through audio sources
POWER	Turns stereo on/off

Installation

Unpack and inspect contents. Prepare vehicle dashboard.

Disconnect vehicle battery: Remove negative terminal for safety.
Remove existing stereo: Use removal tools for factory unit.
Connect wiring harness: Match color-coded wires to vehicle harness.
Connect antenna: Attach vehicle antenna cable.
Mount stereo: Secure in dashboard opening.
Reconnect battery and test operation.

WARNING! Disconnect battery before installation to prevent electrical shorts. Ensure proper wire connections.

First-Time Setup

Power on stereo; configure initial settings.

Set clock: Press and hold CLOCK button, adjust time.
Program radio stations: Tune to desired station, press and hold preset button.
Configure audio settings: Use BASS, TREBLE, FADER, BALANCE controls.
Pair Bluetooth devices: Enter pairing mode, search from mobile device.
Set display preferences: Adjust brightness and contrast.

CAUTION! Do not operate while driving. Park vehicle for setup procedures.

Specifications

Power Output: 50W x 4 channels maximum
Radio Tuner: AM/FM with 18 FM/6 AM presets
CD Compatibility: CD, CD-R, CD-RW, MP3 CDs
USB Support: MP3, WMA playback from USB devices
Bluetooth: Version 4.1, A2DP, HFP
Inputs: AUX 3.5mm, USB Type-A
Power Requirement: 12V DC, negative ground
Operating Temp: -20°C to 60°C

Controls and Settings

Front Panel: POWER, VOLUME, SOURCE, EJECT, Tuning/Seek buttons.

Remote: POWER, Numeric buttons, VOLUME, MUTE, SOURCE, PLAY/PAUSE, Preset buttons.

Audio Settings: BASS, TREBLE, FADER (front/rear), BALANCE (left/right), LOUDNESS. Radio: Manual tuning, Seek, Auto-store presets. Display: Dimmer control, Clock setting. Bluetooth: Pairing mode, Call answer/end, Phonebook access.

Connecting Devices

USB: Connect flash drives or compatible devices. AUX: 3.5mm cable from external players. Bluetooth: Wireless pairing.

Turn off stereo before connecting wired devices.
Insert USB device fully into port.
Connect AUX cable to both stereo and external device.
Select appropriate source (USB/AUX/BT).

Tip: Use high-quality cables for best audio performance.

Playing Media

Supports CDs, USB media, AUX input, Bluetooth audio.

Insert CD: Press EJECT, load disc label-side up.
USB playback: Insert USB device, select USB source.
Navigation: Use << and >> buttons for previous/next track.
Play modes: Repeat, Random, Scan functions available.
MP3 playback: Navigate folders using number buttons.
Pause/Resume: Press PLAY/PAUSE during playback.

WARNING! Do not use damaged discs. Avoid extreme temperatures for media storage.

Bluetooth Connectivity

Wireless audio streaming and hands-free calling.

Enter pairing mode: Hold SOURCE until "PAIRING" appears.
Search from device: Find "KENWOOD-51004301" in Bluetooth settings.
Connect: Enter PIN "0000" if required.
Audio streaming: Select BT as source, play from connected device.
Phone calls: Answer with PHONE button, end call with same.

Note: Keep mobile device within 10 meters for stable connection.

Care & Maintenance

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

CAUTION! Do not use chemicals on display. Keep discs clean and free of scratches.

Regulatory Information

FCC Part 15: Class B digital device compliant. CE marked for European market. Bluetooth SIG qualified. Copyright © Kenwood Corporation. For support, visit www.kenwood.com or contact authorized service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/fuse	Check fuse, verify power connections, test vehicle battery.
No sound	Volume/speakers	Adjust volume, check speaker connections, verify mute status.
CD not playing	Disc/loading	Ensure disc is clean, check format compatibility, reload properly.
Bluetooth not connecting	Pairing/distance	Enter pairing mode, ensure device compatibility, reduce distance.
Radio poor reception	Antenna/position	Check antenna connection, extend antenna fully, reposition vehicle.

Reset: Disconnect battery for 5 minutes to reset unit.

Service: Contact authorized Kenwood service center for repairs.