Sony ICF-304 Radio User Manual

The Sony ICF-304 is an AM/FM portable radio featuring a large, easy-to-read dial, built-in ferrite bar antenna for AM, telescopic antenna for FM, 3-inch dynamic speaker, tone control, battery or AC power operation, and a headphone jack for private listening. 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 Audio 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: AM/FM tuner, large tuning dial, Volume/Tone control, Telescopic FM antenna, Ferrite bar AM antenna, 3-inch speaker, Headphone jack, AC power input, Battery compartment.

Feature	Description
AM/FM Tuner	Receives AM (530-1710 kHz) and FM (88-108 MHz) bands
Tuning Dial	Large, easy-to-read scale with station indicators
Volume/Tone Control	Combined knob for volume adjustment and tone (bass/treble)
FM Telescopic Antenna	Extends for improved FM reception
AM Ferrite Bar Antenna	Built-in; rotate radio for best AM reception
3-inch Dynamic Speaker	Provides clear audio output
Headphone Jack (3.5mm)	For private listening
AC Power Input	For use with included AC adapter (if applicable)
Battery Compartment	Holds batteries for portable operation (typically 4 x D cells)
Power Switch	Turns radio on/off

Installation

Unpack and inspect contents. Place on stable, dry surface.

Insert Batteries: Open battery compartment, insert batteries observing correct polarity (+/-).
Extend FM Antenna: Fully extend telescopic antenna for FM listening.
Connect AC Power (optional): Plug AC adapter into DC input jack and wall outlet.
Position for AM: For best AM reception, rotate the entire radio slowly.

WARNING! Do not mix old and new batteries or different battery types. Remove batteries if not using for extended periods.

First-Time Setup

Power on radio; select band and tune to a station.

Select Band: Slide BAND switch to AM or FM.
Tune Station: Turn TUNING knob until desired station is found on the dial.
Adjust Volume/Tone: Turn VOLUME/TONE knob for desired sound level and quality.
Fine-tune Reception: Adjust FM antenna length and direction; rotate radio for AM.

CAUTION! Keep away from moisture and extreme temperatures. Do not place near other electronic devices that may cause interference.

Specifications

Tuning Range: FM: 88-108 MHz, AM: 530-1710 kHz.
Speaker: 3-inch (76mm) dynamic type.
Power Output: Typically 200 mW.
Power Sources: 4 x D batteries (UM-1) or AC adapter (optional, 6V DC).
Headphone Jack: 3.5mm stereo (output).
Antennas: Telescopic rod (FM), built-in ferrite bar (AM).
Dimensions & Weight: Approx. 280W x 165H x 105D mm; weight varies with batteries.
Operating Temp: 0°C to 40°C (32°F to 104°F).

Controls and Settings

All controls are located on the front and side panels.

Front/Side Panel: POWER/BAND switch (OFF/AM/FM), TUNING knob, VOLUME/TONE knob.

Tuning: Use TUNING knob to find stations; refer to dial scale. Volume/Tone: Combined control - rotate for volume, push/pull or turn while pressed for tone adjustment (bass/treble). Antenna: Extend FM antenna fully; rotate radio for AM. Power: Select OFF, AM, or FM. Headphone: Plug in headphones to mute internal speaker.

Connecting Devices

Headphones: 3.5mm jack. AC Power: DC input jack (if adapter included).

Turn radio OFF before connecting/disconnecting devices.
Insert headphone plug fully into jack for private listening.
Ensure AC adapter voltage matches radio requirements (typically 6V DC).

Tip: Using headphones may improve FM reception by acting as an additional antenna.

Playing Audio

Receives AM and FM radio broadcasts.

Power On: Set POWER/BAND switch to AM or FM.
Tune: Slowly turn TUNING knob to find a station. Use fine-tuning for clearest signal.
Adjust Sound: Set VOLUME/TONE to desired level and tone quality.
Switch Bands: To change from AM to FM or vice versa, switch POWER/BAND selector.
Use Headphones: Plug in to listen privately; internal speaker mutes automatically.

WARNING! Do not listen at extremely high volume levels, especially with headphones, to prevent hearing damage.

Accessibility Features

Large, high-contrast tuning dial for easy reading. Tactile knobs for volume and tuning. Simple, intuitive control layout.

Care & Cleaning

Remove batteries or unplug AC adapter before cleaning. Wipe cabinet with a soft, dry cloth. Do not use solvents or abrasive cleaners.

CAUTION! Never immerse radio in water or other liquids. Keep antennas free of dust and debris.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. This device complies with Part 15 of the FCC Rules. Copyright © Sony Corporation. For support, visit www.sony.com/electronics/support or contact Sony customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power / Radio dead	Batteries/AC power	Check battery polarity; replace with fresh batteries. Ensure AC adapter is properly connected.
Poor AM reception	Antenna orientation	Rotate the entire radio to find best position. Avoid proximity to metal objects or electronics.
Poor FM reception	Antenna not extended/obstacles	Fully extend telescopic antenna. Reposition radio near a window. Check headphone connection.
Distorted sound	Volume too high/batteries low	Reduce volume level. Replace weak batteries.
No sound from speaker (headphones work)	Headphone jack engaged	Unplug headphones from jack to restore speaker sound.

Reset: Turn power OFF and remove batteries for 1 minute, then reinstall.

Service: Refer to www.sony.com/electronics/support for service locations.