Sony CDXNC9950 Car Stereo Manual

The Sony CDXNC9950 is a high-performance car stereo featuring a CD receiver with MP3/WMA playback, AM/FM tuner with 18 FM/6 AM presets, XM Satellite Radio ready (tuner required), 4-channel MOSFET power amplifier (52W x 4 max), front AUX input, CD text display, detachable faceplate for security, and advanced audio controls including Bass Engine, EQ7, and Loudness. 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. Audio 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, Front AUX input, CD slot.

Feature	Description
CD Receiver	Plays CD, CD-R/RW, MP3, WMA formats
AM/FM Tuner	18 FM and 6 AM station presets
XM Ready	Satellite radio capable (requires XM tuner & subscription)
MOSFET Amplifier	52W x 4 max power output
Front AUX Input	3.5mm jack for portable audio devices
Detachable Faceplate	Security feature to prevent theft
Bass Engine	Advanced bass control system
EQ7	7-band equalizer with preset curves
CD Text Display	Shows track/artist info when available
Loudness	Enhances audio at low volumes

Installation

Unpack and inspect contents. Ensure vehicle is parked with ignition off.

Disconnect negative battery terminal: For safety during wiring.
Connect wiring harness: Match colors to vehicle harness (red=ignition, yellow=constant 12V, black=ground).
Mount the unit: Insert into DIN slot, secure with mounting sleeve and brackets.
Connect antenna: Plug vehicle antenna cable into rear port.
Reconnect battery and test: Turn on ignition to verify operation.

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

First-Time Setup

Power on the unit; follow initial setup prompts.

Set clock: Press and hold CLOCK button, adjust with tuning knob.
Program radio stations: Tune to desired station, press and hold preset button (1-6/1-18).
Adjust audio settings: Use SOUND button to access Bass, Treble, EQ7, Loudness.
Detach faceplate: Press RELEASE button, store in protective case when parked.

CAUTION! Do not operate while driving. Set all controls before driving.

Specifications

Power Output: 52W x 4 max (17W x 4 RMS).
Tuner: FM/AM with 18/6 presets.
CD Playback: CD, CD-R/RW, MP3, WMA.
Audio Input: Front 3.5mm AUX jack.
Display: Green fluorescent with CD text.
Security: Detachable faceplate.
EQ: 7-band equalizer (EQ7) with presets.
Power Requirement: 12V DC, negative ground.
Dimensions: DIN size (178mm x 50mm).

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE, BAND, SOUND, CLOCK, RELEASE (faceplate).

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

Audio Controls: Bass (-10 to +10), Treble (-10 to +10), EQ7 (ROCK, POP, JAZZ, etc.), Loudness (On/Off). Radio: Manual/Auto seek, Preset scan, Local/DX reception. CD: Repeat (1/ALL), Random, Scan, Intro. Setup: Clock setting, Display dimmer, Beep tone.

Connecting Devices

AUX Input: Front 3.5mm jack for MP3 players. XM Radio: Requires separate XM tuner connected via rear port.

Turn off unit before connecting devices.
AUX: Plug 3.5mm cable from device into front jack.
XM: Connect XM tuner to rear "SAT" port, run antenna to roof.
Select source: Press SOURCE to cycle through CD, TUNER, AUX, SAT.

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

Playing Media

Supports audio CDs, MP3/WMA CDs.

Insert disc: Label side up into slot (auto-load).
Play: Press PLAY; use SKIP (>>| / |<<) for tracks.
Pause: Press PLAY/PAUSE to pause/resume.
Repeat: Press RPT for track/all repeat.
Random: Press RDM for shuffle play.
Scan: Press SCAN to sample each track (10 sec).
Intro: Plays first 10 seconds of each track.
MP3 Navigation: Use folder buttons to navigate directories.

WARNING! Do not insert damaged or irregular discs. Avoid extreme temperatures.

Audio Features

Bass Engine: Adjust subwoofer level, crossover frequency. EQ7: Select from 7 preset curves or customize. Loudness: Boosts bass/treble at low volumes. Fader/Balance: Adjust front/rear and left/right speaker balance.

Care & Maintenance

Clean with dry, soft cloth. Do not use solvents. Store faceplate in protective case. Keep discs clean and free of scratches.

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

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. XM service requires subscription and separate tuner. For support, visit www.sony.com/electronicsupport or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/ignition	Check fuse, wiring connections, ignition wire.
No sound	Mute/speakers	Check mute, speaker connections, fader settings.
CD won't play	Disc format/damage	Ensure disc is compatible (MP3/WMA); clean disc.
Poor radio reception	Antenna/ location	Ensure antenna fully extended; check connection.
Faceplate not attaching	Dirt/alignment	Clean contacts; align properly and push until click.

Reset: Disconnect battery for 1 minute to reset unit.

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