Sony SRF-H4 Car Stereo Manual

The Sony SRF-H4 is a high-performance car stereo system featuring AM/FM radio with 30 station presets, CD player with MP3/WMA playback, front auxiliary input for portable devices, detachable faceplate security, adjustable bass/treble/fader/balance controls, and a high-power amplifier. Designed for 12V DC vehicle power 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 CD & MP3 Media 8. Security Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with detachable faceplate, Remote Control (optional), Wiring harness, Antenna connector, Front AUX IN jack, CD slot.

Feature	Description
AM/FM Tuner	30 preset stations (18 FM, 12 AM)
CD Player	Plays CD, CD-R, CD-RW, MP3, WMA formats
Front AUX IN	3.5mm jack for portable audio devices
Detachable Faceplate	Security feature to prevent theft
Power Output	High-power amplifier (e.g., 50W x 4)
Audio Controls	Bass, Treble, Fader, Balance adjustments
LCD Display	Shows track info, radio frequency, time
Clock	Digital clock with time set function
Power Connector	12V DC vehicle power input
Speaker Outputs	Front and rear speaker connections

Installation

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

Connect wiring harness: Match colors to vehicle harness (red to ignition, yellow to battery, black to ground).
Connect speakers: Attach front and rear speaker wires to corresponding outputs.
Connect antenna: Plug vehicle antenna cable into rear antenna port.
Secure unit: Slide stereo into dashboard opening and secure with mounting sleeve.
Reconnect battery and test.

WARNING! Disconnect vehicle battery before installation to avoid electrical shorts. Ensure all connections are secure.

First-Time Setup

Power on stereo; follow initial setup.

Set clock: Press and hold CLOCK button, adjust with tuning knob.
Program radio presets: Tune to desired station, press and hold preset button (1-6) for 2 seconds.
Adjust audio settings: Use BASS, TREBLE, FADER, BALANCE controls for preferred sound.
Detach faceplate: Press release button and store securely when leaving vehicle.

CAUTION! Do not force faceplate removal; press release button gently.

Specifications

Power Supply: 12V DC (negative ground).
Tuner: AM/FM with 30 presets.
CD Formats: CD-DA, CD-R, CD-RW, MP3, WMA.
Audio Output: 50W x 4 max power.
Frequency Response: 20Hz - 20kHz.
Signal-to-Noise Ratio: >80dB (CD).
Dimensions: Standard DIN size (178mm x 50mm).
Operating Temp: -20°C to +60°C.

Controls and Settings

Front Panel: POWER/VOLUME knob, SOURCE button, BAND button, TUNING knob, AUDIO button, CLOCK button, EJECT button.

Remote (optional): POWER, VOLUME, SOURCE, PRESET, SEEK, PLAY/PAUSE.

Audio: BASS (-10 to +10), TREBLE (-10 to +10), FADER (front/rear), BALANCE (left/right). Radio: Manual tuning, seek tuning, preset memory. CD: PLAY, PAUSE, STOP, SKIP, REPEAT, RANDOM. Display: Dimmer control, clock display toggle.

Connecting Devices

AUX Input: Front 3.5mm jack for MP3 players, smartphones. Antenna: Rear connector.

Turn off stereo before connecting devices.
Plug 3.5mm cable from portable device into front AUX IN jack.
Select AUX source by pressing SOURCE button.
Control playback and volume from connected device.

Tip: Use high-quality audio cables for best sound from AUX input.

Playing CD & MP3 Media

Supports audio CD, MP3/WMA files on CD-R/RW.

Insert disc: Press EJECT, load CD label-side up.
Play: Press PLAY; use SKIP buttons for tracks.
Stop: Press STOP; eject with EJECT button.
MP3 navigation: Use FOLDER buttons to navigate directories.
Repeat/Random: Press RPT or RDM during playback.
Fast forward/rewind: Press and hold SKIP buttons.
Display: Shows track number, elapsed time, file name (MP3).

WARNING! Do not use damaged or irregular-shaped discs. Avoid extreme heat in vehicle.

Security Features

Detachable Faceplate: Remove when parked to deter theft. Security Code: Optional code setting (see manual for setup).

Care & Cleaning

Disconnect power before cleaning. Use soft, dry cloth for faceplate and display. For CD lens, use approved cleaning disc only.

CAUTION! Do not use solvents or abrasive cleaners. Keep faceplate away from moisture.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/fuse	Check battery and ignition connections; replace fuse (10A).
No sound from speakers	Speaker wiring	Verify speaker connections; check fader/balance settings.
CD won't play	Disc/dirty lens	Ensure disc is compatible and clean; use cleaning disc.
Poor radio reception	Antenna	Ensure antenna cable is connected; check for damage.
Faceplate won't attach	Alignment	Align connectors properly; do not force.

Reset: Disconnect power for 1 minute to reset unit.

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