The Sony 4-216-840-0 is an in-dash car stereo receiver featuring AM/FM radio, CD playback, auxiliary input, USB connectivity, and Bluetooth for hands-free calling and audio streaming. It includes a detachable faceplate for security, customizable audio settings (EQ, fader, balance), and steering wheel control compatibility. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.
Key components: Main unit with CD slot, detachable faceplate, Remote Control (if included), rear connection panel, front AUX/USB port.
| Feature | Description |
|---|---|
| AM/FM Tuner | Presets for 18 FM and 6 AM stations |
| CD Player | Plays audio CDs, CD-R/RW |
| Bluetooth | Wireless audio streaming and hands-free calling |
| USB Port | For USB flash drives and iPod/iPhone connectivity |
| AUX Input | 3.5mm jack for external audio devices |
| Preamp Outputs | Front, rear, and subwoofer outputs for external amplifiers |
| Detachable Faceplate | Security feature to prevent theft |
| Steering Wheel Control | Compatible with aftermarket interfaces |
| Audio Settings | EQ presets (Rock, Pop, Jazz, etc.), fader, balance |
| Display | Multi-color LCD with adjustable dimmer |
Unpack and inspect contents. Ensure vehicle is off and battery disconnected.
WARNING! Disconnect vehicle battery before installation to prevent electrical shorts. Ensure all connections are secure.
Power on the unit; follow initial configuration.
CAUTION! Do not force CD into slot. Ensure faceplate is attached during operation.
Access menus via SETUP button. Front Panel: POWER/VOLUME knob, SOURCE, AUDIO, BAND, numbered presets.
Remote (if included): POWER, VOLUME, SOURCE, MUTE, numbered buttons.
Audio Settings: EQ (Rock, Pop, Jazz, Custom), Bass/Treble, Fader, Balance, Loudness. Setup: Clock, Display Dimmer, Beep On/Off, Bluetooth settings, Language. Radio: Auto store, Local/Distant reception. CD: Repeat, Random, Scan.
USB: Connect flash drive or iPod to front port. AUX: 3.5mm cable from device to AUX input. Bluetooth: Pair phone for audio/calls.
Tip: Use high-quality USB drives formatted FAT32 for best compatibility.
Supports CD, USB, AUX, Bluetooth audio.
WARNING! Do not use damaged or irregular-shaped CDs. Avoid extreme heat near unit.
Pairing: Enable Bluetooth on phone, select "Sony 4-216-840-0" from list. Calls: Answer with PHONE button, end call with same. Audio Streaming: Select BT AUDIO source. Phonebook: Sync contacts via Bluetooth settings.
Use soft, dry cloth for cleaning. Do not use solvents. Store faceplate in protective case.
CAUTION! Do not spray cleaners directly on unit. Keep liquids away from buttons and slots.
FCC Part 15: Class B digital device; complies with interference limits. ICES-003: Complies with Canadian EMI standards. Bluetooth® is a registered trademark of Bluetooth SIG, Inc. Copyright © Sony Corporation. For support, visit www.sony.com/audio or contact 1-800-222-7669.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No power | Wiring/fuse | Check battery and ignition connections; inspect fuse. |
| Bluetooth not pairing | Settings/range | Ensure pairing mode; delete old pairing; stay within 3 ft. |
| CD not playing | Disc/dirty lens | Use clean, compatible disc; try CD lens cleaner. |
| Poor radio reception | Antenna connection | Ensure antenna plugged in; check for damage. |
| USB not recognized | Format/power | Reformat to FAT32; use powered USB hub if needed. |
Reset: Press RESET button on faceplate with small tool.
Service: 1-800-222-7669; www.sony.com/audio