Sony XR-4900 Car Stereo Manual

The Sony XR-4900 is a high-performance car stereo receiver featuring Bluetooth connectivity, AM/FM tuner with 18 FM/6 AM presets, USB port for audio playback and device charging, auxiliary input, CD player with MP3/WMA support, 4 x 50W MOSFET power output, customizable illumination (red/white/green), detachable faceplate security, and advanced audio controls including EQ settings (Rock/Pop/Jazz/Classic/Flat), bass boost, loudness, and fader/balance. 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 Pairing 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with detachable faceplate, Remote Control, Wiring harness, Antenna adapter, Mounting sleeve, User manual.

Feature	Description
Bluetooth	For hands-free calling and wireless audio streaming
USB Port	For audio playback from flash drives and device charging
Auxiliary Input	3.5mm jack for external audio sources
CD Player	Plays CD, CD-R, CD-RW, MP3, WMA formats
Power Output	4 x 50W MOSFET amplifier
Illumination	Selectable button/display colors (Red/White/Green)
Detachable Faceplate	Security feature to prevent theft
EQ Presets	Rock, Pop, Jazz, Classic, Flat sound profiles
Preset Memory	18 FM and 6 AM station presets
Audio Controls	Bass, Treble, Fader, Balance, Loudness

Installation

Unpack and verify all components. Ensure vehicle is parked with ignition off.

Disconnect negative battery terminal for safety.
Remove existing stereo (if any) using provided removal keys.
Connect wiring harness: Match colors (Red: Ignition, Yellow: Battery, Black: Ground, etc.).
Connect antenna adapter and slide unit into mounting sleeve.
Reconnect battery terminal and test basic functions.

WARNING! Incorrect wiring can damage the unit or vehicle electrical system. Consult a professional if unsure.

First-Time Setup

After installation, power on the unit and configure initial settings.

Set clock: Press and hold SETUP, use rotary knob to adjust time.
Program radio presets: Tune to desired station, press and hold a preset button (1-6/1-18).
Adjust illumination: In SETUP menu, select ILLUMINATION and choose color.
Configure audio: Use AUDIO menu to select EQ preset and adjust bass/treble.
Pair Bluetooth device: See Section 9 for detailed steps.

CAUTION! Do not operate settings while driving. Park safely first.

Specifications

Power Output: 50W x 4 channels (MOSFET).
Tuner: AM/FM with 18 FM and 6 AM presets.
CD Playback: CD, CD-R, CD-RW, MP3, WMA.
Connectivity: Bluetooth, USB (Type-A), 3.5mm Aux-in.
Audio Features: 5-Band EQ presets, Bass Boost, Loudness, Fader/Balance.
Security: Detachable faceplate.
Display: Multi-color LCD with adjustable dimmer.
Power Supply: 12V DC, negative ground.
Operating Temp: -20°C to +60°C (-4°F to +140°F).

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE button, EJECT, FUNCTION, AUDIO, SETUP. Detachable Faceplate: Contains main controls and display.

Remote: POWER, VOLUME, MUTE, SOURCE, TRACK UP/DOWN, PRESET, NUMERIC, AUDIO.

Audio Settings: EQ (Rock/Pop/Jazz/Classic/Flat), Bass Level (-10 to +10), Treble Level (-10 to +10), Loudness (On/Off), Fader/Balance. Setup Menu: Clock, Illumination Color, Beep Tone, Bluetooth Settings, Reset. Radio: Manual tuning, Seek, Auto-store, Preset memory.

Connecting Devices

USB: Connect flash drive for audio playback (supports MP3/WMA). Aux: Use 3.5mm cable for smartphones/players. Bluetooth: For wireless audio and calls.

Ensure unit is on and in appropriate source mode (USB/AUX/BT).
For USB: Insert drive; unit will read and begin playback automatically.
For Aux: Connect cable to front panel jack; press SOURCE to select AUX.
For Bluetooth: See Section 9.

Tip: Use high-quality USB drives formatted as FAT32 for best compatibility.

Playing Media

Supports CD, USB, Aux, Bluetooth audio.

CD: Press EJECT, insert disc label-up, close manually. Press PLAY.
USB: Insert drive; playback starts automatically or press SOURCE to select USB.
Navigation: Use TRACK UP/DOWN or rotary knob to skip tracks/folders.
Repeat/Random: Press FUNCTION during playback to cycle modes.
Scan: Press and hold TRACK UP/DOWN to scan through tracks.
CD Text/ID3 Tag: Display shows track info if available.

WARNING! Do not insert damaged or irregular-shaped discs. Avoid extreme temperatures for media storage.

Bluetooth Pairing

For hands-free calling and audio streaming.

Press SOURCE to select BT mode. Display shows "BT READY".
On your phone, enable Bluetooth and search for devices.
Select "SONY XR-4900" from list. If prompted, enter PIN "0000".
Once connected, "BT PHONE" or "BT AUDIO" will appear.
To make a call: Use phone's dialer or voice command. Volume adjusts automatically during calls.

Note: Up to 5 devices can be paired; only one can be connected at a time.

Care & Maintenance

Use soft, dry cloth for cleaning. For stubborn stains, dampen cloth slightly with water. Do not use solvents.

CAUTION! Always detach faceplate before cleaning. Do not expose unit to direct sunlight or moisture for extended periods.

Regulatory Information

FCC ID: AK8XR4900. This device complies with Part 15 of FCC Rules. Operation is subject to conditions: (1) device may not cause harmful interference, (2) device must accept any interference received. Bluetooth® is a registered trademark of Bluetooth SIG, Inc. Sony and the Sony logo are trademarks of Sony Corporation. For support, visit www.sony.com/audio or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/ignition	Check fuse (10A), ensure ignition wire (Red) is connected to switched 12V source.
No sound from speakers	Speaker wires/Fader	Verify speaker connections; check fader/balance settings not set to extreme.
Bluetooth not connecting	Pairing mode/distance	Ensure unit is in BT pairing mode; move device within 3 feet; delete old pairing and retry.
USB not recognized	Format/capacity	Reformat drive as FAT32; use drive under 32GB; avoid multiple partitions.
CD skips or ejects	Disc/damage	Clean disc; ensure it's not scratched; verify disc format is supported.
Radio poor reception	Antenna connection	Ensure antenna cable is fully inserted; check for damaged antenna.

Reset: Press and hold SETUP for 5 seconds, select "FACTORY RESET".

Service: 1-800-222-7669; www.sony.com/audio