Sony Walkman SRF-H4 Radio User Manual

The Sony Walkman SRF-H4 is a portable AM/FM stereo radio featuring a compact design, digital tuning with preset stations, a built-in speaker and headphone jack, LCD display with backlight, auto-scan and manual tuning, bass boost function, and is powered by two AA batteries. 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. Using the Radio 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital tuner, LCD display, Built-in speaker, Headphone jack, Telescopic antenna, Control buttons.

Feature	Description
AM/FM Stereo Tuner	Digital tuning for clear AM and FM stereo reception
LCD Display	Shows frequency, station preset, battery level, and time
Built-in Speaker	For listening without headphones
Headphone Jack (3.5mm)	For private stereo listening
Telescopic Antenna	Extendable for improved FM reception
Preset Stations	Store up to 10 AM and 10 FM stations
Auto Scan	Automatically finds and plays stations
Bass Boost	Enhances low-frequency sound
Backlight	Illuminates LCD display in low light
Power Source	Two AA batteries or optional AC adapter

Installation

Unpack and inspect contents. Ensure all parts are present.

Insert Batteries: Open battery compartment, insert two AA batteries observing correct polarity.
Extend Antenna: Fully extend telescopic antenna for best FM reception.
Connect Headphones (Optional): Plug 3.5mm headphones into jack for private listening.
Connect AC Adapter (Optional): Plug optional AC adapter into DC IN jack.

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 the radio; follow initial setup steps.

Set Time: Press and hold CLOCK button, use TUNING +/- to set time.
Select Band: Press BAND button to toggle between AM and FM.
Auto Tune Stations: Press and hold SCAN button to automatically scan and store strong stations.
Set Presets: Tune to desired station, press and hold a number button (1-10) to store.

CAUTION! Keep away from strong magnetic fields which may affect performance.

Specifications

Tuning Range: FM 87.5-108 MHz, AM 530-1710 kHz.
Speaker: 40mm dynamic speaker.
Output Power: 50 mW per channel into 32 ohms.
Power Requirements: 3V DC (Two AA batteries) or DC 4.5V via optional adapter.
Battery Life: Approx. 30 hours (Alkaline, volume medium, headphones).
Dimensions: Approx. 110mm (W) x 70mm (H) x 25mm (D).
Weight: Approx. 150g (without batteries).
Operating Temp: 0°C to 40°C.

Controls and Settings

Access functions via front panel buttons. Main Controls: POWER, VOLUME +/-, TUNING +/-, BAND, SCAN, PRESET, BASS BOOST, CLOCK.

LCD Icons: AM/FM indicator, Preset number, Battery level, Clock, Stereo indicator.

Tuning: Manual (TUNING +/-) or Auto (SCAN). Audio: Adjust volume with VOLUME; press BASS BOOST to enhance low frequencies. Presets: Recall by pressing PRESET then number (1-10). Clock: Display toggles between time and frequency; set via CLOCK button.

Connecting Devices

Headphones: 3.5mm jack. External Antenna: Optional FM wire antenna connection. AC Power: Optional adapter (DC 4.5V, center positive).

Ensure radio is off before connecting external devices.
For best FM reception, fully extend telescopic antenna and orient vertically.
For AM reception, rotate radio for best signal; avoid metal surfaces.

Tip: Use fresh alkaline batteries for longest life and best performance.

Using the Radio

Supports AM/FM listening via speaker or headphones.

Power On: Slide POWER switch to ON.
Select Band: Press BAND to choose AM or FM.
Tune Station: Use TUNING +/- manually or press SCAN for auto-scan.
Adjust Volume: Use VOLUME +/- buttons.
Use Presets: Press PRESET, then number button (1-10) to recall saved station.
Bass Boost: Press BASS BOOST to toggle enhanced bass on/off.
Backlight: Press any button to illuminate LCD for 5 seconds.
Sleep Timer: Press and hold SLEEP (if equipped) to set auto power-off (15-90 min).

WARNING! Do not listen at high volume for extended periods to prevent hearing damage.

Accessibility Features

Large, clear LCD with backlight for easy reading. Tactile buttons with distinct shapes for key functions. Headphone jack for private listening.

Care & Cleaning

Remove batteries before cleaning. Use soft, dry cloth to wipe exterior. Do not use solvents or abrasive cleaners.

CAUTION! Keep away from water and extreme temperatures. Do not disassemble.

Regulatory Information

FCC Part 15: This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Copyright © Sony Corporation. Sony and Walkman are trademarks of Sony Group Corporation. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Dead batteries	Replace with fresh AA batteries; check polarity.
Poor FM reception	Antenna position	Fully extend telescopic antenna; move to location with better signal.
No sound from speaker	Volume/Mute/Headphones	Increase volume; ensure headphones are unplugged.
Stations not saving	Battery low/Procedure	Replace batteries; press and hold preset button until beep confirms save.
Display is dim or blank	Backlight off/Battery	Press any button to activate backlight; replace batteries if dim.

Reset: Remove batteries for 1 minute to reset all settings to factory default.

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