Sony TC-WR665S Car Stereo Manual

The Sony TC-WR665S is a high-performance car stereo system featuring AM/FM radio with 30 station presets, cassette tape player with auto-reverse and Dolby B noise reduction, CD player compatibility, 4-channel amplifier, front/rear fader control, bass/treble adjustment, detachable faceplate security, and clock/timer functions. Designed for 12V DC vehicle electrical systems. 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 Cassette Tapes 8. Security Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with cassette mechanism, Detachable Faceplate, Remote Control, Wiring Harness, Antenna Connector, Front/Rear Preamp Outputs.

Feature	Description
AM/FM Tuner	30 station presets (18 FM, 12 AM)
Cassette Player	Auto-reverse, Dolby B noise reduction
CD Input	External CD player connection via AUX
Amplifier	4 x 20W max power output
Fader Control	Adjusts front/rear speaker balance
Bass/Treble	±10 dB adjustment range
Detachable Faceplate	Theft deterrent security feature
Clock/Timer	24-hour clock with sleep timer
Loudness Control	Enhances low/high frequencies at low volume
Power Antenna Control	Automatically extends antenna when radio is on

Installation

Unpack and verify all components. Ensure vehicle is turned off.

Disconnect vehicle battery: Remove negative terminal for safety.
Remove existing stereo: Use DIN removal tools if applicable.
Connect wiring harness: Match colors (red=ignition, yellow=battery, black=ground).
Connect speakers: Ensure proper polarity (+/-).
Connect antenna: Push connector firmly into antenna port.
Mount unit: Slide into DIN slot until it clicks securely.
Reconnect battery and test functions.

WARNING! Incorrect wiring may damage vehicle electrical system. Follow wiring diagram precisely.

First-Time Setup

After installation, configure basic settings.

Set clock: Hold CLOCK button, use TUNE to set time.
Program radio stations: Tune to desired station, hold preset button for 2 seconds.
Adjust audio settings: Set bass, treble, fader, and loudness to preference.
Test cassette function: Insert tape to verify auto-reverse operation.
Test CD input: Connect external CD player to AUX port.

CAUTION! Do not operate while driving. Park vehicle during setup.

Specifications

Power Supply: 12V DC, negative ground.
Output Power: 20W x 4 (max), 10W x 4 (RMS).
Tuner Sensitivity: FM 10.3 dBf, AM 18 µV.
Frequency Response: 30 Hz - 15 kHz (cassette).
Signal-to-Noise Ratio: 70 dB (Dolby B on).
Wow & Flutter: 0.15% (WRMS).
Dimensions: 178mm (W) x 50mm (H) x 160mm (D).
Operating Temperature: 0°C to 40°C (32°F to 104°F).

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE selector, BASS/TREBLE buttons, FADER control, EJECT button, CLOCK button.

Remote: POWER, VOLUME UP/DOWN, SOURCE, TUNE UP/DOWN, PRESET 1-6, PLAY/PAUSE, STOP, FF/REW, DOLBY NR.

Audio Settings: BASS (±10 dB), TREBLE (±10 dB), FADER (front/rear balance), LOUDNESS (on/off). Radio: Manual tuning, seek tuning, preset memory. Cassette: Dolby B NR, auto-reverse, tape direction indicator. System: Clock setting, sleep timer (15-90 minutes), display dimmer.

Connecting Devices

External Devices: AUX input for CD players, Front/Rear preamp outputs for amplifiers.

Turn off vehicle ignition before connecting devices.
AUX input: Use 3.5mm stereo cable from CD player headphone jack.
Preamp outputs: Connect RCA cables to external amplifier inputs.
Power antenna: Connect blue wire from harness to antenna relay.

Tip: Use shielded cables for audio connections to reduce noise interference.

Playing Cassette Tapes

Supports Type I (normal) and Type II (chrome) tapes.

Insert tape: Label side up, open edge toward right.
Play: Press PLAY; auto-reverse engages at tape end.
Fast forward/rewind: Press FF or REW; press again to stop.
Dolby NR: Press DOLBY button to reduce tape hiss.
Eject: Press EJECT button; never force tape removal.
Program search: Press FF during play to skip to next song.
Tape direction: Arrow indicates current play direction.
Metal tape compatibility: Type IV metal tapes not recommended.

WARNING! Do not expose tapes to direct sunlight or heat. Keep magnets away from unit.

Security Features

Detachable Faceplate: Remove by pressing release button on side. Security Code: 4-digit code prevents unauthorized use (default 0000).

Care & Maintenance

Clean tape heads monthly with isopropyl alcohol and cotton swab. Clean faceplate with soft, dry cloth. Avoid chemical cleaners.

CAUTION! Never insert objects into cassette slot. Keep liquids away from unit.

Regulatory Information

FCC ID: AK8TC-WR665S. Complies with Part 15 of FCC Rules. This device may not cause harmful interference and must accept any interference received. Copyright © Sony Corporation. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Blown fuse/wiring	Check vehicle fuse (10A); verify wiring connections.
Poor radio reception	Antenna connection	Ensure antenna fully connected; check for damage.
Tape won't play	Dirty heads/tape	Clean tape heads; try different cassette.
Sound distortion	Speaker wiring	Check speaker polarity; ensure impedance 4-8 ohms.
Faceplate won't attach	Dirt in connector	Clean connector pins with contact cleaner.
Security code locked	Wrong code entered	Enter correct code; contact dealer if lost.

Reset: Disconnect battery for 10 minutes to reset unit.

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