Sony XR-1790 Car Stereo Manual

The Sony XR-1790 is a high-performance in-dash car stereo featuring AM/FM radio, CD player, MP3/WMA playback, front auxiliary input, USB port for audio playback and device charging, 52W x 4 high power output, detachable faceplate security, customizable illumination, and advanced audio controls with bass boost 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. Security 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, USB port, AUX IN jack, CD slot.

Feature	Description
AM/FM Tuner	30 station presets (18 FM, 12 AM)
CD Player	Plays CD, CD-R, CD-RW, MP3, WMA
USB Port	For audio playback and charging compatible devices
AUX IN Jack	3.5mm input for external audio sources
Power Output	52W x 4 (max)
Detachable Faceplate	Security feature to prevent theft
Illumination	Customizable button and display colors
Audio Controls	Bass, Treble, Loudness, Fader, Balance
Power / Volume Knob	Turns unit on/off and adjusts volume
Source Button	Cycles through Radio, CD, USB, AUX

Installation

Ensure vehicle is parked with ignition off. Gather necessary tools (wire cutters, crimpers, screwdrivers).

Disconnect negative battery terminal for safety.
Remove existing stereo (if applicable) using removal keys or tools.
Connect wiring harness: Match colors (Red to ignition, Yellow to constant 12V, Black to ground, etc.). Use crimp connectors or solder.
Connect antenna plug to rear of unit.
Slide unit into dash opening and secure with mounting sleeve.
Reconnect negative battery terminal.

WARNING! Incorrect wiring can cause damage to the unit or vehicle electrical system. Verify all connections before powering on.

First-Time Setup

Insert faceplate and turn ignition to ACC or ON position.

Set clock: Press and hold the CLOCK button, use tuning knob to adjust time.
Program radio presets: Tune to desired station, press and hold a numbered button (1-6) for 2 seconds.
Adjust audio settings: Use MENU or AUDIO button to set Bass, Treble, Fader, Balance to preference.
Set illumination: In SETUP menu, select desired color for buttons and display.

CAUTION! Do not operate the unit while driving. Make adjustments only when the vehicle is safely parked.

Specifications

Power Supply: 12V DC, negative ground.
Output Power: 52W x 4 (Max), 17W x 4 (RMS).
Tuner Sensitivity: FM 12.8 dBf, AM 30 µV.
Supported Media: CD, CD-R, CD-RW, MP3 CD, WMA CD.
USB Support: USB 2.0, FAT16/32, up to 32GB.
Frequency Response: 20Hz - 20kHz.
Signal-to-Noise Ratio: >80 dB (CD).
Dimensions (Main Unit): 7" x 2" x 6" (W x H x D).
Operating Temperature: 14°F to 140°F (-10°C to 60°C).

Controls and Settings

Access functions via front panel buttons or included remote control.

Front Panel: POWER/VOLUME knob, SOURCE, BAND, AUDIO/MENU, numbered preset buttons (1-6), OPEN/CLOSE (CD), tuning/seek knob.

Remote: POWER, VOLUME, MUTE, SOURCE, numbered buttons, tuning arrows, PLAY/PAUSE, SKIP.

Audio Menu: Bass (-10 to +10), Treble (-10 to +10), Loudness (On/Off), Fader (F7 to R7), Balance (L7 to R7). Setup Menu: Clock, Illumination (Red/Blue/Green/White), Beep (On/Off), Reset. Radio: Manual/Seek tuning, Local/DX reception, Preset memory.

Connecting Devices

USB: Connect compatible flash drive or cable for iPod/iPhone. AUX: Use 3.5mm cable for smartphones, tablets, or portable players.

Ensure unit is off before connecting.
For USB, insert drive directly into front port. For charging, use manufacturer-approved cable.
For AUX, plug cable into front AUX IN jack and other end into device's headphone jack.
Press SOURCE button to select USB or AUX mode.

Tip: For best USB compatibility, format flash drives as FAT32. Some devices may require specific modes for playback.

Playing Media

Supports Audio CD, MP3/WMA CD, USB audio files.

Insert CD: Press OPEN/CLOSE, place disc label-side up, press again to close.
Play/Pause: Press the center of the tuning knob or PLAY/PAUSE on remote.
Skip Tracks: Press tuning knob left/right or use SKIP buttons on remote.
Fast Forward/Rewind: Press and hold tuning knob left/right.
Repeat/Random: Press the AUDIO/MENU button during playback to access play modes (Repeat Track/All, Random).
Folder Navigation (MP3/USB): Rotate tuning knob to browse folders, press to select.

WARNING! Do not use damaged or irregularly shaped CDs. Do not insert foreign objects into the CD slot or USB port.

Security Features

Detachable Faceplate: Press release button and slide faceplate off to deter theft. Store in protective case. Security Code: If enabled, unit will prompt for a 4-digit code upon reconnection if power is lost. Default code is often 0000 or 1111 (refer to your specific unit's documentation).

Care & Maintenance

Use a soft, dry cloth to clean the faceplate and unit. For stubborn marks, dampen cloth slightly with water. Do not use solvents or abrasive cleaners.

CAUTION! Always detach the faceplate before cleaning. Never spray cleaning agents directly onto the unit. Keep the CD slot and ports free of dust and debris.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that it does not cause harmful interference. ICES-003: Complies with Canadian ICES-003 standard. Copyright © Sony Corporation. All trademarks are the property of their respective owners. For support, visit www.sony.com/electronics/support or contact Sony customer service at 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not power on	Blown fuse, wiring	Check vehicle fuse (usually 10A-15A). Verify Yellow (constant) and Red (ignition) wires have 12V.
No sound from speakers	Speaker wires, fader	Check speaker connections. Ensure Fader/Balance is not set to extreme.
CD/USB not recognized	Disc format, USB format	Ensure disc is clean and not scratched. For USB, reformat to FAT32. Try a different device.
Poor radio reception	Antenna connection	Ensure antenna plug is fully seated. Check antenna mast for damage.
Remote control not working	Batteries, obstruction	Replace batteries. Ensure clear line of sight to unit's front panel.
"CODE" or "LOCK" displayed	Security lock activated	Enter the correct 4-digit security code using the preset buttons.

Reset: Disconnect the unit from power (remove fuse or disconnect battery) for 2 minutes to perform a hard reset.

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