Sony XR-C5090/4790 Car Stereo Manual

The Sony XR-C5090/4790 is a high-performance car stereo receiver featuring Bluetooth connectivity, USB playback, AM/FM tuner with RDS, CD playback, and advanced audio controls. Designed for in-vehicle entertainment, it supports hands-free calling, audio streaming, and customizable sound settings. Below are key sections covering safety, features, installation, 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 Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with display, Remote Control (if included), Wiring harness, Antenna connector, USB port, AUX input, Microphone input for hands-free.

Feature	Description
Bluetooth	Wireless audio streaming and hands-free calling
USB Port	For playback of audio files from USB drives
CD Player	Plays standard audio CDs and CD-R/RW
AM/FM Tuner	With RDS for station information
AUX Input	3.5mm jack for external audio devices
EQ & Sound Settings	Customizable bass, treble, fader, balance
Power Output	High power for clear sound
Display	Illuminated LCD with adjustable dimmer
Steering Wheel Control Ready	Compatible with optional interface
Remote Control	For convenient operation (if included)

Installation

Unpack and inspect contents. Ensure vehicle is off and battery disconnected.

Remove existing stereo: Use appropriate removal tools for your vehicle.
Connect wiring harness: Match colors to vehicle harness (power, ground, speakers).
Connect antenna plug to the unit's antenna input.
Secure the unit into the dashboard mounting sleeve.
Reconnect vehicle battery and test functions.

WARNING! Disconnect the negative battery terminal before installation to prevent electrical shorts or damage. Ensure all connections are secure and insulated.

First-Time Setup

Power on the unit; follow initial configuration.

Set the clock: Press SOURCE to turn on, access SETUP menu to set time.
Pair Bluetooth device: Enter BT pairing mode from SOURCE menu, search on your phone.
Adjust audio settings: Use AUDIO menu to set bass, treble, fader, balance.
Program radio presets: Tune to desired station, press and hold a preset button (1-6).

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

Specifications

Model: Sony XR-C5090 / XR-C4790.
Power Output: 50W x 4 (max).
Audio Sources: Bluetooth, USB, CD, AM/FM Radio, AUX.
Bluetooth Profiles: A2DP (audio), HFP (hands-free).
USB Support: MP3, WMA, AAC playback.
Display: Monochrome or color LCD (model dependent).
Preamp Outputs: For external amplifiers (model dependent).
Operating Voltage: 12V DC, negative ground.
Dimensions: Standard DIN (178mm x 50mm).

Controls and Settings

Access menus via the rotary knob or dedicated buttons. Front Panel: POWER/VOLUME knob, SOURCE, AUDIO, MENU/SETUP.

Remote (if included): POWER, SOURCE, VOLUME, TRACK UP/DOWN, PRESET, MUTE, MENU.

Audio Settings: BASS, TREBLE, FADER, BALANCE, LOUDNESS. Radio: Manual/Seek tuning, Preset memory (18 stations). Setup: Clock, Display dimmer, Beep tone, Bluetooth device list, Language. Bluetooth: Pairing, call history, audio streaming.

Connecting Devices

USB: Connect flash drive to front/rear port. AUX: Use 3.5mm cable from device to AUX IN. Microphone: Plug included mic for hands-free calls.

Ensure unit is off before connecting devices.
For USB, format drive as FAT32 for best compatibility.
Select source via SOURCE button (BT, USB, AUX, CD, RADIO).

Tip: Use high-quality USB drives and avoid leaving them connected in extreme temperatures.

Playing Media

Supports CDs, USB audio files, Bluetooth streaming.

Insert CD: Label side up, gently insert into slot.
USB Playback: Navigate folders using rotary knob or />> buttons.
Play/Pause: Press the center of the rotary knob or PLAY/PAUSE button.
Skip Tracks: Use />> buttons or rotary knob turn.
Repeat/Random: Press RPT or RDM during playback.
Scan: Press and hold />> to fast scan through tracks.

WARNING! Do not insert damaged or irregular-shaped CDs/USB drives. Do not touch the laser lens.

Bluetooth Features

Hands-free Calling: Answer/end calls with PHONE button; use microphone. Audio Streaming: Stream music from paired device. Phonebook Access: Sync contacts (phone dependent).

Care & Maintenance

Use a soft, dry cloth to clean the faceplate. For stubborn marks, dampen cloth slightly with water. Do not use solvents.

CAUTION! Never use abrasive cleaners or sprays directly on the unit. Keep liquids away from buttons and ports.

Regulatory Information

FCC ID: AK8 series (compliance information). This device complies with Part 15 of the FCC Rules. Bluetooth is a trademark of Bluetooth SIG, Inc. Sony and the Sony logo are trademarks of Sony Corporation. For support, visit www.sony.com/electronics/support or contact Sony customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not power on	Power connection, fuse	Check wiring harness connections; inspect vehicle and unit fuses.
No sound from speakers	Speaker wires, settings	Verify speaker wire connections; check fader/balance settings.
Bluetooth not connecting	Pairing mode, distance	Ensure unit is in pairing mode; delete old pairing on phone; reduce distance.
USB not recognized	Format, capacity	Reformat USB to FAT32; try a smaller capacity drive (under 32GB recommended).
CD skips or won't play	Disc condition, vibration	Clean disc; ensure it's not scratched; check for excessive vehicle vibration.

Reset: Press and hold the reset button (small pinhole) with a paperclip for 5 seconds.

Service: Consult your place of purchase or authorized Sony service center.