Sony MDX-66XLP Car Stereo Manual

The Sony MDX-66XLP is an in-dash CD receiver with AM/FM tuner, built-in amplifier, CD-R/RW playback capability, detachable faceplate security, preset station memory, bass/treble controls, and auxiliary input. Designed for 12V DC vehicle electrical systems. 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 CD Media 8. Security Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: CD receiver unit, Detachable Faceplate, Remote Control (if included), Wiring Harness, Antenna Connector, Auxiliary Input Jack.

Feature	Description
AM/FM Tuner	30 station presets (18 FM, 12 AM)
CD Playback	Supports CD, CD-R, CD-RW formats
Detachable Faceplate	Security feature to prevent theft
Bass/Treble Controls	Adjustable sound settings
Power Output	50W x 4 channels (max)
Auxiliary Input	3.5mm jack for external audio devices
LCD Display	Shows track, station, and time information
Clock	Digital clock with time display
Power Antenna Control	Activates retractable antenna
Remote Control Ready	Compatible with optional Sony remote

Installation

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

Remove existing stereo: Use removal tools to extract old unit.
Connect wiring harness: Match colors (red=ignition, yellow=battery, black=ground).
Connect antenna: Plug antenna cable into rear connector.
Mount unit: Slide into dashboard opening and secure with brackets.
Reconnect battery and test.

WARNING! Disconnect vehicle battery before installation to prevent electrical shorts. Ensure all connections are secure.

First-Time Setup

Power on unit; follow initial setup.

Set clock: Press and hold CLOCK button, adjust with tuning knob.
Program radio stations: Tune to desired station, press and hold preset button.
Adjust sound settings: Use BASS/TREBLE controls for preference.
Detach faceplate: Press release button and store securely when leaving vehicle.

CAUTION! Do not force faceplate during attachment/detachment.

Specifications

Power Supply: 12V DC, negative ground.
Tuner: FM/AM with 30 presets.
CD Compatibility: CD, CD-R, CD-RW.
Output Power: 50W x 4 (max), 17W x 4 (RMS).
Frequency Response: 20Hz - 20kHz.
Signal-to-Noise Ratio: >90dB.
Auxiliary Input: 3.5mm stereo mini jack.
Dimensions: DIN size (178mm x 50mm).
Operating Temp: -20°C to 60°C.

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE button, BASS/TREBLE buttons, BAND button, numbered preset buttons, OPEN/CLOSE for CD.

Remote: POWER, VOLUME, SOURCE, PRESET, SEEK, PLAY/PAUSE, OPEN/CLOSE.

Audio: BASS (-10 to +10), TREBLE (-10 to +10), balance/fader. Radio: Manual tuning, seek, preset memory. CD: Play, pause, skip, repeat, random. Display: Dimmer control, clock setting.

Connecting Devices

Auxiliary: 3.5mm cable to front AUX jack. External Amplifier: Use preamp outputs (if equipped).

Turn off unit before connecting devices.
Plug auxiliary cable into front AUX jack.
Select AUX source with SOURCE button.
Adjust volume on both device and stereo.

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

Playing CD Media

Supports audio CDs, CD-R, CD-RW.

Insert disc: Press OPEN/CLOSE, load CD label-side up.
Play: Press PLAY; unit automatically starts playback.
Skip tracks: Press SEEK forward/backward.
Repeat: Press REPEAT for track/disc repeat.
Random: Press RANDOM for shuffle play.
Eject: Press OPEN/CLOSE to remove disc.
Fast forward/rewind: Press and hold SEEK buttons.

WARNING! Do not use damaged or irregular-shaped CDs. Do not insert foreign objects.

Security Features

Detachable Faceplate: Remove when leaving vehicle to deter theft. Security Code: Optional code can be set to disable unit if stolen (refer to advanced manual).

Care & Cleaning

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

CAUTION! Never spray cleaning agents directly on unit. Keep faceplate away from extreme heat.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Blown fuse/wiring	Check vehicle fuse; verify wiring connections.
No sound	Mute/volume settings	Check mute; adjust volume; verify speaker connections.
CD won't play	Disc format/damage	Ensure disc is audio CD format; clean disc; check for scratches.
Poor radio reception	Antenna connection	Ensure antenna is fully extended and connected.
Faceplate won't attach	Misalignment/dirt	Clean connectors; align properly and press firmly.

Reset: Disconnect battery for 1 minute to reset unit.

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