Sony CDX-MP450X Car Stereo Manual

The Sony CDX-MP450X is a high-performance car stereo featuring a CD/MP3 player, AM/FM tuner with 18 FM/6 AM presets, detachable faceplate security, CD-R/RW playback, 4x50W high power output, Bass Boost function, and an auxiliary input for external audio devices. 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 & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit, Detachable Faceplate, Wiring Harness, Mounting Sleeve, Remote Control, User Manual.

Feature	Description
CD/MP3 Player	Plays standard audio CDs and MP3 files from CD-R/RW
AM/FM Tuner	18 FM and 6 AM station presets
Detachable Faceplate	Security feature to prevent theft
Power Output	4 x 50 Watts maximum power
Bass Boost	Enhances low-frequency sound
Auxiliary Input	3.5mm jack for connecting portable audio players
LCD Display	Shows track info, station frequency, and settings
Volume Control	Rotary knob for adjusting audio level
Source Button	Switches between CD, Tuner, and AUX modes
Power/Antenna	Powers unit on/off and controls power antenna

Installation

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

Connect wiring harness: Match wire colors (red to ignition, yellow to battery, black to ground).
Mount sleeve: Insert into dashboard opening and secure with bent tabs.
Connect antenna: Plug antenna cable into rear of unit.
Connect speakers: Attach speaker wires to corresponding outputs.
Slide unit into sleeve until it clicks into place.
Reconnect vehicle battery and test operation.

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

First-Time Setup

Power on the unit; follow initial setup steps.

Set clock: Press and hold CLOCK button, use TUNE/SEEK to adjust time.
Program radio presets: Tune to desired station, press and hold a preset button (1-6/1-18).
Adjust audio settings: Use BASS, TREBLE, FADER, and BALANCE controls.
Detach faceplate: Press RELEASE button and store securely when leaving vehicle.

CAUTION! Do not force the faceplate during attachment or removal.

Specifications

Disc Formats: Audio CD, CD-R, CD-RW, MP3 CD.
Tuner: FM/AM with 18 FM and 6 AM presets.
Power Output: 50W x 4 (Max), 17W x 4 (RMS).
Frequency Response: 20Hz - 20kHz.
Signal-to-Noise Ratio: >90dB.
Auxiliary Input: 3.5mm stereo mini jack.
Power Requirement: 12V DC, negative ground.
Dimensions: Standard DIN size (178mm x 50mm x 159mm).

Controls and Settings

Access functions via front panel buttons or included remote control.

Front Panel: POWER/VOLUME knob, SOURCE, BAND, TUNE/SEEK, numbered presets, BASS/TREBLE, FADER/BALANCE, CLOCK, DISP, AUX IN.

Remote: POWER, VOLUME UP/DOWN, SOURCE, PLAY/PAUSE, SKIP, BAND, PRESETS.

Audio Settings: Adjust BASS, TREBLE, FADER (front/rear), BALANCE (left/right). Tuner: Manual/seek tuning, preset memory. Display: Switch between clock and track/station info. Playback: Repeat, random, scan modes for CD/MP3.

Connecting Devices

Auxiliary Input: 3.5mm jack on front panel for portable players. Power Antenna: Connect blue wire from harness to vehicle's power antenna lead.

Ensure unit is off before connecting devices.
Plug 3.5mm cable from portable player into AUX IN jack.
Select AUX mode using SOURCE button.
Control playback and volume from the connected device.

Tip: Use a high-quality audio cable for best sound from auxiliary devices.

Playing Media

Supports Audio CDs and MP3 files on CD-R/RW.

Insert disc: Press EJECT, load disc label-side up.
Play: Press PLAY/PAUSE; unit automatically starts playback.
Skip tracks: Press SKIP (>>| or |<<) forward or backward.
Scan: Press and hold SKIP to fast forward/rewind.
Repeat/Random: Press RPT or RDM during playback.
MP3 Navigation: Use TUNE/SEEK to navigate folders and files.
Eject: Press EJECT to remove disc.

WARNING! Do not use damaged or irregularly shaped discs. Avoid extreme temperatures.

Security Features

Detachable Faceplate: Press RELEASE button to remove; store separately. Security Code: Optional code can be set to disable unit if stolen (see manual for setup).

Care & Cleaning

Disconnect power before cleaning. Use soft, dry cloth for unit and faceplate. For stubborn dirt, dampen cloth slightly with water.

CAUTION! Do not use solvents or abrasive cleaners. Keep faceplate away from direct sunlight and heat.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. This device complies with part 15 of the FCC Rules. Copyright © Sony Corporation. For support, visit www.sony.com/electronics/support or contact Sony Customer Service at 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/Blown fuse	Check connections and vehicle fuse; ensure yellow/red wires properly connected.
No sound from speakers	Speaker wiring/Settings	Verify speaker connections; check FADER/BALANCE settings.
Radio poor reception	Antenna connection	Ensure antenna cable is fully inserted; check antenna condition.
Disc not playing	Disc format/Damage	Ensure disc is compatible (CD/MP3); clean disc; check for scratches.
Remote not working	Batteries/Obstruction	Replace batteries; ensure clear line of sight to unit's sensor.

Reset: Disconnect power for 2 minutes to reset unit memory.

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