Sony CDX-M670 Car Stereo Manual

The Sony CDX-M670 is a high-performance car stereo featuring a CD player with MP3/WMA playback, AM/FM tuner with 18 presets, detachable faceplate security, front auxiliary input, 4-channel preamp outputs, and a 52W x 4 MOSFET power amplifier. 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 CD slot, Detachable Faceplate, Remote Control, Wiring Harness, Mounting Sleeve, Antenna Connector, Front AUX Input, Preamp Outputs.

Feature	Description
CD Player	Plays Audio CDs, CD-R/RW with MP3/WMA files
AM/FM Tuner	18 station presets (12 FM, 6 AM)
Detachable Faceplate	Security feature to prevent theft
Front AUX Input	3.5mm jack for portable audio devices
Preamp Outputs	4-channel (Front/Rear) for external amplifiers
MOSFET Amplifier	52W x 4 high power output
EQ Presets	Customizable sound settings (Rock, Pop, Jazz, etc.)
Clock & Timer	Built-in clock with sleep timer function
Volume Control	Rotary knob with push-button function
Power Antenna Lead	Automatically extends antenna when unit is on

Installation

Unpack and inspect contents. Ensure vehicle battery is disconnected before installation.

Connect wiring harness: Match wire colors (Red to ignition, Yellow to battery, Black to ground).
Mount sleeve: Insert into dashboard opening and secure with provided clips.
Connect antenna: Plug antenna cable into rear connector.
Connect speakers: Attach speaker wires to harness (White/White-Black: Front Left, etc.).
Insert unit: Slide stereo into mounting sleeve until it clicks.
Reconnect battery and test operation.

WARNING! Disconnect vehicle battery before installation to prevent electrical shorts or damage.

First-Time Setup

Power on stereo; follow initial setup prompts.

Set clock: Press and hold CLOCK button, use TUNE/SEEK to adjust time.
Program radio stations: Tune to desired station, press and hold a preset button (1-6).
Adjust sound settings: Use EQ button to select preset (Rock, Pop, Jazz, Custom).
Set volume limit: In settings menu, adjust maximum volume to prevent distortion.
Attach faceplate: Align and push until it clicks into place.

CAUTION! Ensure proper grounding to avoid noise interference.

Specifications

Power Output: 52W x 4 (MOSFET).
CD Formats: Audio CD, CD-R/RW, MP3, WMA.
Tuner: AM/FM with 18 presets.
Preamp Outputs: 4 channels (Front/Rear), 2V.
Frequency Response: 10Hz - 20kHz.
Signal-to-Noise Ratio: >90dB.
AUX Input: Front 3.5mm stereo jack.
Security: Detachable faceplate.
Power Supply: 12V DC, negative ground.
Dimensions: Standard DIN (178mm x 50mm).

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE button, BAND button, TUNE/SEEK buttons, EQ button, AUX button, EJECT button.

Remote: POWER, VOLUME UP/DOWN, SOURCE, BAND, PRESET, PLAY/PAUSE, TRACK UP/DOWN.

Sound Settings: EQ presets (Rock, Pop, Jazz, Custom), Bass/Treble adjustment, Loudness (On/Off), Fader/Balance control. Radio: Manual/Auto tuning, Local/DX reception, Preset memory. CD: Repeat (Track/All), Random play, Intro Scan, Resume playback. Display: Dimmer control, Clock display mode.

Connecting Devices

AUX Input: Front 3.5mm jack for MP3 players/phones. Preamp Outputs: Rear RCA jacks for external amplifiers.

Turn off stereo before connecting devices.
AUX: Plug 3.5mm cable from device into front jack, press AUX button.
Amplifier: Connect RCA cables from preamp outputs to amplifier inputs.
Subwoofer: Use rear preamp outputs with external crossover.

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

Playing Media

Supports Audio CDs, MP3/WMA CDs.

Insert CD: Press EJECT, load disc label-side up.
Play: Press SOURCE to select CD mode; playback starts automatically.
Skip tracks: Press TUNE/SEEK up/down or remote TRACK buttons.
Fast forward/rewind: Press and hold TUNE/SEEK buttons.
Repeat: Press REPEAT to cycle through track/all/off.
Random: Press RANDOM to shuffle tracks.
MP3/WMA navigation: Use TUNE/SEEK to browse folders/files.
Eject: Press EJECT button; remove disc when tray opens.

WARNING! Do not insert damaged or irregular-shaped discs. Avoid using in extreme temperatures.

Security Features

Detachable Faceplate: Remove when parked to deter theft. Security Code: Optional code can be set (default 0000).

Care & Maintenance

Clean faceplate with soft, dry cloth only. Do not use solvents or abrasives. Keep discs clean and free of scratches.

CAUTION! Do not expose unit to moisture or extreme heat. Store faceplate in protective case.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/ fuse	Check connections (Red/Yellow/Black); replace fuse (10A).
No sound from speakers	Speaker wires/ settings	Verify speaker connections; check fader/balance settings.
CD won't play	Disc format/ damage	Ensure disc is compatible (Audio CD, MP3); clean disc.
Radio poor reception	Antenna connection	Ensure antenna cable is securely connected; check antenna mast.
Faceplate not attaching	Alignment/ debris	Clean connectors on faceplate and unit; align properly.
Unit asks for code	Security code enabled	Enter 4-digit security code (default 0000).

Reset: Disconnect battery for 5 minutes to reset unit.

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