Sony XR-4750RDS Car Stereo Manual

The Sony XR-4750RDS is a high-performance car stereo system featuring RDS (Radio Data System) technology, CD playback, AM/FM tuner with 30 presets, detachable faceplate security, 4x50W high power output, bass boost, and multiple audio inputs. 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. Security Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with detachable faceplate, Remote Control, Wiring harness, Antenna connector, AUX input, USB port.

Feature	Description
RDS Technology	Displays station information and automatic tuning
CD Playback	Supports CD, CD-R, CD-RW formats
AM/FM Tuner	30 station presets (18 FM, 12 AM)
Power Output	4 x 50W maximum power
Detachable Faceplate	Security feature to prevent theft
AUX Input	3.5mm jack for external audio devices
USB Port	For USB flash drive playback
Bass Boost	Enhanced low-frequency response
LCD Display	Backlit display with adjustable dimmer
Remote Control	Included for convenient operation

Installation

Unpack and inspect contents. Ensure proper wiring connections.

Disconnect vehicle battery: Remove negative terminal before installation.
Connect wiring harness: Match color-coded wires to vehicle wiring.
Mount the unit: Secure in DIN slot using provided mounting sleeve.
Connect antenna: Attach vehicle antenna cable to rear connector.
Reconnect battery and test system.

WARNING! Professional installation recommended. Incorrect wiring may damage vehicle electrical system.

First-Time Setup

Power on system; follow initial configuration.

Set clock: Press and hold CLOCK button, adjust with tuning knob.
Program radio stations: Tune to desired station, press and hold preset button.
Adjust audio settings: Use BASS, TREBLE, FADER, BALANCE controls.
Set security code: In menu, set 4-digit code for theft protection.

CAUTION! Record security code in safe place. Without code, unit may become inoperable.

Specifications

Power Output: 4 x 50W Max (4 x 20W RMS).
Tuner: FM/AM with RDS.
Frequency Response: 20Hz - 20kHz.
Signal-to-Noise Ratio: >90dB.
Supported Media: CD, CD-R, CD-RW, MP3 CD, USB flash drive.
Audio Inputs: AUX 3.5mm, USB Type-A.
Power Supply: 12V DC, negative ground.
Dimensions: DIN size (178mm x 50mm).
Operating Temperature: -20°C to +60°C.

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE button, BAND button, MENU, EJECT, detachable faceplate release.

Remote: POWER, Numeric buttons, VOLUME, MUTE, BAND, PRESET, PLAY/PAUSE, SKIP.

Audio Settings: BASS, TREBLE, FADER, BALANCE, LOUDNESS, Bass Boost. Radio: Manual/auto tuning, preset memory, RDS on/off. Display: Dimmer control, clock setting. Security: Code setting, faceplate removal.

Connecting Devices

AUX Input: 3.5mm audio cable from portable device. USB: Flash drive for MP3 playback.

Turn off unit before connecting devices.
Connect AUX cable to front panel input.
Insert USB drive into front port.
Select source (AUX or USB) with SOURCE button.

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

Playing Media

Supports CD, MP3 CD, USB flash drives.

Insert media: Press EJECT, load CD or insert USB drive.
Play: Press PLAY; skip tracks with SKIP buttons.
MP3 navigation: Use folder buttons to navigate directories.
Random play: Press RANDOM button during playback.
Repeat: Press REPEAT for track/folder repeat.
Eject: Press EJECT to remove CD.

WARNING! Do not use damaged discs. Remove CDs before removing faceplate.

Security Features

Detachable Faceplate: Remove when parked for theft prevention. Security Code: 4-digit code required if power disconnected. Code Entry: Enter code using preset buttons if "CODE" appears.

Care & Maintenance

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

CAUTION! Do not insert foreign objects into CD slot or ports. Store faceplate in protective case.

Regulatory Information

FCC ID: AK8XR4750RDS. Complies with Part 15 of FCC rules. This device may not cause harmful interference and must accept any interference received. Copyright © Sony Corporation. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/ fuse	Check connections; verify fuse in wiring harness; ensure battery connected.
No sound	Mute/ settings	Check MUTE; verify speaker connections; adjust volume.
CD won't play	Disc/ format	Ensure disc is clean; check format compatibility; try different disc.
Radio poor reception	Antenna	Ensure antenna fully extended and connected; check antenna condition.
"CODE" displayed	Security lock	Enter 4-digit security code using preset buttons.
Remote not working	Batteries/ angle	Replace batteries; point directly at front panel sensor.

Reset: Disconnect battery for 5 minutes to reset unit (note: requires security code after).

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