Sony MDX-CA680X Car Stereo Manual

The Sony MDX-CA680X is a high-performance car stereo system featuring a CD player, AM/FM tuner, built-in amplifier, multiple audio inputs, and advanced sound customization options. This manual covers essential information for safe installation, operation, and maintenance of your Sony car stereo. Below are key sections detailing features, installation procedures, setup, specifications, controls, connectivity, playback functions, 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. Audio Customization 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Front-loading CD player, AM/FM tuner with preset stations, Auxiliary input, Remote control capability, Detachable faceplate for security, and Advanced audio controls.

Feature	Description
CD Player	Plays standard audio CDs and CD-R/RW discs
AM/FM Tuner	12 FM and 6 AM station presets
Auxiliary Input	3.5mm jack for connecting external audio devices
Remote Control	Optional remote for convenient operation
Detachable Faceplate	Removable front panel for theft prevention
Audio Controls	Bass, Treble, Balance, Fader, Loudness
Power Output	50W x 4 channels (max)
Illumination	Adjustable display and button lighting
Clock	Digital clock with timer
Power Source	12V DC vehicle electrical system

Installation

Ensure vehicle is parked with ignition off. Gather necessary tools: wiring harness, mounting kit, and trim removal tools.

Disconnect vehicle battery: Remove negative terminal to prevent electrical shorts.
Remove existing stereo: Use appropriate tools to detach trim and unscrew unit.
Connect wiring harness: Match color-coded wires (power, ground, speakers) and secure with crimp connectors.
Mount the stereo: Slide MDX-CA680X into dash opening and secure with mounting sleeve.
Reconnect battery: Attach negative terminal and test basic functions.

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

First-Time Setup

After installation, configure initial settings for optimal performance.

Set the clock: Press and hold CLOCK button, use tuning knob to adjust time.
Program radio presets: Tune to desired station, press and hold preset button (1-6 for AM, 1-12 for FM).
Adjust audio settings: Use BASS, TREBLE, BALANCE, and FADER controls to match listening preferences.
Test CD playback: Insert a CD to verify proper loading and playback.

CAUTION! Ensure all connections are secure before powering on to avoid damage.

Specifications

Model: Sony MDX-CA680X
Power Output: 50W x 4 (Max), 22W x 4 (RMS)
Frequency Response: 20Hz - 20kHz
Signal-to-Noise Ratio: >90dB
CD Compatibility: Audio CD, CD-R, CD-RW
Tuner Sensitivity: FM: 10.3 dBf, AM: 30 µV
Audio Input: 3.5mm auxiliary jack
Power Requirement: 12V DC, negative ground
Dimensions: 7" x 2" x 6" (W x H x D)
Operating Temperature: 32°F to 122°F (0°C to 50°C)

Controls and Settings

Front Panel Controls: POWER/VOLUME knob, SOURCE button, BAND button, TUNING knob, AUDIO button, CLOCK button, EJECT button.

Remote Control (optional): POWER, VOLUME UP/DOWN, SOURCE, PRESET, MUTE, PLAY/PAUSE, TRACK UP/DOWN.

Audio Settings: Access via AUDIO button - BASS (-10 to +10), TREBLE (-10 to +10), BALANCE (L/R adjustment), FADER (F/R adjustment), LOUDNESS (On/Off). Display Settings: Dimmer control for night driving. Security: Detach faceplate when leaving vehicle.

Connecting Devices

Auxiliary Input: Connect MP3 players, smartphones, or other audio devices via 3.5mm cable. Speaker Connections: Four speaker outputs (Front L/R, Rear L/R).

Ensure stereo is off before connecting devices.
Plug 3.5mm cable into AUX IN port on front panel.
Connect other end to audio output of external device.
Press SOURCE button to select AUX input mode.

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

Playing Media

Supports audio CDs and external devices via auxiliary input.

Insert CD: Press EJECT button, place CD label-side up, gently push to close.
Play CD: Press PLAY or SOURCE to select CD mode; use TRACK buttons to navigate.
Radio: Press BAND to switch between AM/FM; use TUNING knob or SEEK for stations.
Preset Stations: Press numbered buttons (1-12 for FM, 1-6 for AM) for quick access.
Pause/Resume: Press PLAY/PAUSE during CD playback.
Repeat/Shuffle: Not available on this model.
Eject: Press EJECT button; remove CD when tray opens.

WARNING! Do not insert damaged or irregularly shaped discs. Avoid using while driving on rough roads.

Audio Customization

Sound Profiles: Adjust BASS and TREBLE for preferred music types (Rock, Jazz, Classical). Balance/Fader: Optimize sound distribution for driver or all passengers. Loudness: Enhance low and high frequencies at low volume levels.

Care & Maintenance

Keep unit clean and dry. Use soft, dry cloth for cleaning; avoid solvents or abrasive materials.

CAUTION! Do not expose to extreme temperatures or moisture. Remove faceplate in high-theft areas.

Regulatory Information

FCC Compliance: This device complies with Part 15 of FCC Rules. Operation is subject to interference that may cause undesired operation. Copyright © Sony Corporation. All rights reserved. Sony and the Sony logo are trademarks of Sony Corporation. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Blown fuse, wiring	Check vehicle fuse box; verify power and ground connections.
No sound from speakers	Speaker wiring, settings	Check speaker connections; adjust balance/fader settings.
CD won't play	Disc type, dirty lens	Ensure disc is audio CD; clean lens with approved cleaner.
Poor radio reception	Antenna connection	Check antenna cable connection; ensure antenna is fully extended.
Remote not working	Batteries, obstruction	Replace batteries; ensure clear line of sight to stereo.

Reset: Disconnect battery for 5 minutes to reset unit if experiencing persistent issues.

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