Sony XR-C4120 Car Stereo Manual

The Sony XR-C4120 is a single-DIN car stereo featuring a 4x50W high-power output, built-in AM/FM tuner with 18 FM and 6 AM presets, CD player with MP3/WMA playback, front auxiliary input, detachable faceplate for security, and customizable sound settings with Bass Boost and Loudness. It includes a wired remote control input and is designed for easy installation in most vehicles. 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, Wired Remote Control Input, Front AUX Input, Power/Speaker Wiring Harness.

Feature	Description
Power Output	4 x 50W Max (High Power)
Tuner	AM/FM with 18 FM & 6 AM presets
CD Player	Plays CD, CD-R, CD-RW, MP3, WMA
Front AUX Input	3.5mm jack for external audio devices
Detachable Faceplate	Security feature to prevent theft
Sound Controls	Bass Boost, Loudness, Fader/Balance
Display	Green fluorescent display
Remote Control Input	For optional wired remote (Sony RM-X411)
Clock	Digital clock with timer
Power Supply	12V DC, negative ground

Installation

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

Remove existing stereo: Use removal keys or tools specific to your vehicle.
Connect wiring harness: Match colors (Red to ignition, Yellow to constant 12V, Black to ground).
Connect speakers: Match speaker wires (Front/Rear, Left/Right).
Connect antenna: Plug vehicle antenna cable into rear port.
Secure unit: Slide into DIN slot and secure with mounting sleeve.
Reconnect battery and test.

WARNING! Disconnect vehicle battery before installation to avoid short circuits or electrical damage.

First-Time Setup

Power on the unit; follow initial setup steps.

Set the clock: Press and hold CLOCK, then use TUNE/SEEK to set time.
Program radio presets: Tune to desired station, press and hold a preset button (1-6/1-18).
Adjust sound settings: Use SOUND menu for Bass, Treble, Fader, Balance.
Detach faceplate: Press RELEASE button and store securely when leaving vehicle.

CAUTION! Ensure all connections are secure and insulated to prevent electrical issues.

Specifications

Channels: 4.
Max Power Output: 50W x 4.
Tuner Sensitivity: FM 12.8 dBf, AM 27 µV.
CD Formats: CD-DA, CD-R/RW, MP3, WMA.
Frequency Response: 20 Hz - 20,000 Hz.
Signal-to-Noise Ratio: >90 dB (CD).
Power Supply: 12V DC (negative ground).
Dimensions (WxHxD): 178 mm x 50 mm x 160 mm.
Operating Temperature: 0°C to 40°C (32°F to 104°F).

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE button, BAND, TUNE/SEEK, numbered preset buttons, CD slot, AUX input.

Remote Control (Optional RM-X411): POWER, VOLUME, SOURCE, PRESET, MUTE, PLAY/PAUSE.

Sound Settings: Access via SOUND button - BASS, TREBLE, FADER (front/rear), BALANCE (left/right), LOUDNESS (On/Off). Tuner: Manual tuning with TUNE, seek with SEEK, store presets. CD: PLAY/PAUSE, STOP, SKIP (TRACK UP/DOWN), REPEAT, RANDOM. Clock/Display: Adjust brightness, set sleep timer.

Connecting Devices

AUX Input: Front 3.5mm jack for smartphones/MP3 players. Wired Remote: Connect optional RM-X411 to remote input on rear.

Turn off unit before connecting devices.
Plug 3.5mm cable from device into front AUX input.
Select AUX source by pressing SOURCE button.
For wired remote, connect to designated port on rear of unit.

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

Playing Media

Supports Audio CDs, MP3/WMA CDs.

Insert disc: Label side up into slot (auto-load).
Play: Press PLAY or unit may auto-play; use SKIP for tracks.
Stop/Eject: Press STOP, then eject by pressing EJECT or inserting another disc.
MP3/WMA Navigation: Use FOLDER UP/DOWN to navigate directories.
Repeat/Random: Press RPT for repeat track/all; press RDM for random play.
Pause: Press PLAY/PAUSE to pause/resume.
Scan: Press and hold SKIP to scan through track.

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

Security Features

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

Care & Maintenance

Keep unit clean and dry. Use soft, dry cloth for cleaning; do not use solvents.

CAUTION! Do not expose to direct sunlight or moisture for extended periods. Always detach faceplate in high-risk areas.

Regulatory Information

FCC Part 15: Class B digital device; complies with limits for vehicular use. 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/fuse	Check connections (Red/Yellow/Black); check vehicle fuse.
No sound from speakers	Speaker wiring/settings	Verify speaker connections; check Fader/Balance settings.
Radio poor reception	Antenna connection	Ensure antenna cable is fully plugged in.
CD not playing	Disc format/damage	Ensure disc is compatible (CD, MP3, WMA); clean disc.
AUX input not working	Source selection/cable	Press SOURCE to select AUX; check cable connection.
Unit doesn't turn on without faceplate	Security feature	Attach faceplate completely until it clicks.

Reset: Disconnect power (remove fuse) for 1 minute to reset unit.

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