Sony 70AP Car Stereo Manual

The Sony 70AP is an advanced in-dash car stereo system featuring AM/FM radio with 18 FM and 6 AM presets, CD player with MP3/WMA playback capability, auxiliary input for external audio devices, detachable faceplate security, adjustable bass/treble/balance/fader controls, and a high-power MOSFET amplifier. Compatible with most vehicle electrical systems (12V DC, negative ground). 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 (optional), Wiring harness, Antenna connector, AUX IN port, CD slot.

Feature	Description
AM/FM Tuner	18 FM and 6 AM station presets
CD Player	Plays audio CDs, CD-R/RW, MP3/WMA files
AUX IN Port	3.5mm jack for connecting portable music players
Detachable Faceplate	Security feature to prevent theft
Power Output	MOSFET 50W x 4 high-power amplifier
Audio Controls	Bass, Treble, Balance, Fader adjustments
SOURCE Button	Cycles through Radio, CD, AUX modes
VOLUME Knob	Adjusts audio level; push to power on/off
EJECT Button	Ejects CD from slot
LCD Display	Shows track info, radio frequency, settings

Installation

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

Disconnect vehicle battery: Remove negative terminal to prevent short circuits.
Remove existing stereo: Use removal tools to release old unit from dash.
Connect wiring harness: Match colors (red=ignition, yellow=constant 12V, black=ground).
Connect antenna plug: Insert into rear antenna port.
Secure unit in dash: Slide into mounting sleeve and secure with brackets.
Reconnect battery and test.

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

First-Time Setup

Power on unit; follow initial configuration.

Set clock: Hold CLOCK button, use TUNE/SEEK to set time.
Program radio presets: Tune to desired station, press and hold a preset button (1-6/1-18).
Adjust audio settings: Use BASS/TREBLE knobs for preferred sound.
Attach faceplate: Align and push until it clicks into place.

CAUTION! Do not operate while driving. Park vehicle for initial setup.

Specifications

Power Supply: 12V DC, negative ground.
Tuner: FM 87.5-108 MHz, AM 530-1710 kHz.
CD Formats: Audio CD, CD-R, CD-RW, MP3, WMA.
Output Power: 50W x 4 (max), 17W x 4 (RMS).
Audio Controls: Bass (±10 dB), Treble (±10 dB), Balance/Fader.
Inputs: AUX IN (3.5mm stereo jack).
Dimensions: DIN size (178mm x 50mm).
Operating Temp: -20°C to 60°C (-4°F to 140°F).

Controls and Settings

Front Panel: VOLUME/Power knob, SOURCE, EJECT, TUNE/SEEK, BASS/TREBLE knobs, LCD display.

Remote (optional): POWER, Numeric buttons, SOURCE, VOLUME UP/DOWN, MUTE, BAND, PLAY/PAUSE.

Radio: BAND to switch AM/FM; TUNE/SEEK for manual/auto station search; store presets. Audio: BASS/TREBLE knobs rotate; push BASS knob for Balance, TREBLE for Fader. Clock: Hold CLOCK button to set. Display: Dimmer adjusts with vehicle lights.

Connecting Devices

AUX: Use 3.5mm stereo cable from portable device to AUX IN port.

Turn off unit before connecting.
Plug cable into AUX IN port on front or side.
Select AUX mode via SOURCE button.
Start playback on external device.

Tip: For best audio quality, set device volume to 75% and adjust car stereo volume.

Playing Media

Supports CDs, MP3/WMA files on disc.

Insert disc: Press EJECT to open slot; insert label-up.
Play: Press PLAY or unit auto-plays; use TUNE/SEEK for track skip.
Stop: Press EJECT to stop and remove disc.
MP3/WMA navigation: Use FOLDER buttons to navigate directories.
Repeat/Random: Press RPT or RDM during playback.
Scan: Press and hold TUNE/SEEK to scan tracks.
Pause: Press PLAY/PAUSE to pause/resume.

WARNING! Do not use damaged or irregular-shaped discs. Keep slot free of debris.

Security Features

Detachable Faceplate: Remove by pressing release button; store separately. Security Code: Optional 4-digit code can be set to deter theft (default 0000).

Care & Maintenance

Use soft, dry cloth for cleaning. For stubborn stains, dampen cloth slightly with water.

CAUTION! Do not use solvents or abrasive cleaners. Remove faceplate before cleaning.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/ignition	Check fuse; ensure red/yellow wires connected properly; verify ignition is on.
No sound	Mute/speakers	Check MUTE; ensure speaker wires connected; adjust volume.
CD won't play	Disc/dirty lens	Ensure disc is compatible and inserted correctly; clean lens with cleaning disc.
Poor radio reception	Antenna	Ensure antenna plugged in fully; check antenna for damage.
Faceplate won't attach	Alignment	Ensure unit is powered; align connectors properly and push firmly.

Reset: Disconnect battery for 5 minutes to reset unit memory.

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