sony 4-125-656-41(1) Car Stereo Manual

The Sony 4-125-656-41(1) is an in-dash car stereo system featuring AM/FM radio tuner, CD player with MP3/WMA playback capability, auxiliary audio input, front panel USB port for media playback and device charging, Bluetooth connectivity for hands-free calling and audio streaming, customizable illumination, and detachable faceplate security. 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 Features 9. Care & Cleaning 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
AM/FM Tuner	30 station presets (18 FM, 12 AM) with seek/scan
CD Player	Plays CD, CD-R, CD-RW, MP3, WMA formats
Front USB Port	For USB flash drives, iPod/iPhone connectivity, and charging
Auxiliary Input	3.5mm jack for external audio devices
Bluetooth	Hands-free calling and wireless audio streaming (A2DP)
Detachable Faceplate	Security feature to deter theft
Customizable Illumination	Adjustable display color to match vehicle interior
Power Output	4 x 50W max, 4 x 17W RMS
EQ & Sound Settings	Bass, Treble, Fader, Balance controls; preset sound modes
Steering Wheel Control Ready	Compatible with optional interface adapters

Installation

Unpack and inspect contents. Ensure vehicle is parked with ignition off and battery disconnected.

Remove existing stereo: Use appropriate removal tools for your vehicle.
Connect wiring harness: Match wire colors (Red: Ignition, Yellow: Battery, Black: Ground, etc.). Solder or use crimp connectors; insulate all connections.
Connect antenna adapter: Plug into vehicle's antenna cable.
Secure mounting sleeve: Insert into dashboard opening and bend tabs to lock.
Connect unit and test: Plug harness into rear of stereo, reconnect vehicle battery, turn ignition to ACC to test basic functions.
Final installation: Slide stereo into sleeve until it clicks; attach faceplate.

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

First-Time Setup

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

Set the clock: Press SOURCE to turn on, then press and hold AUDIO/SETUP to enter menu. Navigate to CLOCK setting.
Program radio presets: Tune to desired station, press and hold a preset button (1-6) to store.
Pair Bluetooth device: Enter Bluetooth menu, select "Pairing", search for "SONY XAV" on your phone and connect.
Adjust sound settings: Use AUDIO/SETUP button to access Bass, Treble, Fader, and Balance.
Set illumination color: In SETUP menu, navigate to DISPLAY/ILLUMINATION to choose color.

CAUTION! Perform setup only when the vehicle is parked in a safe location.

Specifications

Power Supply: 12V DC, negative ground.
Output Power: 50W x 4 max (17W x 4 RMS).
Tuner: FM 87.5-107.9 MHz, AM 530-1710 kHz.
CD Compatibility: CD, CD-R, CD-RW, MP3, WMA.
USB: Supports USB 2.0, playback of MP3/WMA, charges connected devices (5V/1.5A max).
Bluetooth Profiles: HFP (Hands-free), A2DP (Audio Streaming), AVRCP (Remote Control).
Aux Input: 3.5mm stereo mini jack.
Preamp Outputs: None (for this model).
Dimensions (WxHxD): 178mm x 50mm x 153mm.
Operating Temperature: 0°C to 50°C (32°F to 122°F).

Controls and Settings

Access menus via AUDIO/SETUP button. Front Panel: POWER/VOLUME knob, SOURCE button, EJECT, USB port, AUX IN jack.

Remote: POWER, VOL +/- , MUTE, SOURCE, BAND, PRESET, TRACK/SEEK, PLAY/PAUSE, MENU.

Audio Settings: Bass, Treble, Fader, Balance, Loudness (On/Off), preset EQ (ROCK, POP, FLAT, etc.). Setup Menu: Clock, Display (Dimmer/Illumination), Bluetooth (Pairing/Device List), Beep (On/Off), Reset. Radio: Manual tuning, Seek, Scan, Preset memory. CD/USB: Repeat (Track/All/Folder), Random play, Intro Scan, Folder selection.

Connecting Devices

USB: Connect flash drive or iPod/iPhone cable directly to front port. AUX: Use 3.5mm cable from device headphone jack to AUX IN. Bluetooth: Pair phone for calls and music.

Ensure unit is on and in appropriate source mode (USB, AUX, BT AUDIO).
For USB: File system must be FAT16/FAT32. Navigate folders using />
For AUX: Set volume on external device to about 75% to avoid distortion.
For Bluetooth: Initial pairing required only once; subsequent connections are automatic.

Tip: Use high-quality cables for AUX connection to minimize noise.

Playing Media

Supports Audio CD, MP3/WMA CD, USB flash drives.

Insert CD: Press EJECT, load disc label-side up, press EJECT again to close.
Play/Pause: Press PLAY/PAUSE on remote or press the center of the VOLUME knob.
Skip Tracks: Press on remote or rotate VOLUME knob left/right.
Fast Search: Press and hold .
Repeat/Random: Press MENU repeatedly to cycle through Repeat (Off/Track/All/Folder) and Random (On/Off) modes.
Folder Navigation (USB/MP3 CD): Press and hold to skip folders.
Eject: Press EJECT button; remove disc when tray opens.

WARNING! Do not use irregularly shaped CDs (e.g., heart-shaped) or damaged discs. Do not touch the laser lens.

Bluetooth Features

Hands-Free Calling: Answer/end calls with PLAY/PAUSE button; reject call by holding same button. Voice Dial: Press and hold PLAY/PAUSE to activate phone's voice command. Audio Streaming: Stream music from paired phone; control playback (play, pause, skip) from stereo. Phonebook: Supports download and access from stereo display (if supported by phone).

Care & Cleaning

Detach faceplate before cleaning. Use soft, dry cloth for display and buttons. For stubborn dirt, dampen cloth slightly with water; do not use solvents.

CAUTION! Never spray cleaners directly onto the unit. Store detached faceplate in its protective case.

Regulatory Information

FCC ID: AK8CAX2000U. This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Bluetooth® is a registered trademark of Bluetooth SIG, Inc. Sony is a trademark of Sony Corporation. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not power on	Blown fuse, wiring	Check vehicle fuse (usually 10A-15A). Verify Red (IGN) and Yellow (BATT) wires have 12V+.
No sound from speakers	Speaker wires, Fader	Check speaker wire connections. Ensure Fader/Balance is not set to extreme.
Bluetooth not connecting	Pairing mode, interference	Delete old pairing on phone, re-enter stereo's pairing mode. Ensure phone is within 3 ft.
CD/USB not recognized	Disc format, USB format	Ensure disc is finalised. USB must be FAT16/FAT32. Try another media.
Radio has poor reception	Antenna connection	Ensure antenna adapter is fully plugged in. Check vehicle antenna for damage.
Remote control not working	Batteries, obstruction	Replace batteries (CR2025 x2). Ensure clear line of sight to front panel sensor.

Reset: Turn unit on. Press and hold AUDIO/SETUP for more than 5 seconds until "RESET" appears.

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