Sony SRF-M85W - S2 Sports Walkman Personal Radio User Manual

The Sony SRF-M85W S2 Sports Walkman is a water-resistant personal AM/FM radio designed for active use. It features a lightweight, ergonomic design with a clip for easy attachment, a digital tuner with 20 station presets (10 AM, 10 FM), a backlit LCD display, auto-scan tuning, a built-in speaker and headphone jack, and is powered by a single AAA battery. 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. Advanced Tuning Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Water-resistant casing, Clip, LCD Display with backlight, Control Buttons, Headphone Jack, Built-in Speaker, Battery Compartment.

Feature	Description
Water Resistance	Splash and sweat resistant design (not for submersion)
Digital Tuner	AM/FM stereo reception with digital frequency display
Station Presets	20 total presets (10 AM, 10 FM) for quick access
Backlit LCD Display	Shows frequency, time, band, and battery status
Auto-Scan Tuning	Automatically finds and stops at the next strong station
Power Source	Single AAA battery (alkaline or rechargeable)
Audio Output	Built-in monaural speaker and 3.5mm stereo headphone jack
Clip	Integrated belt/pocket clip for secure attachment
Time Display	Can display current time when not tuning
Lock Switch	Prevents accidental button presses

Installation

Unpack and inspect contents. Ensure all parts are present.

Insert Battery: Open battery compartment cover, insert a single AAA battery with correct polarity, close cover securely.
Attach Clip: The integrated clip is ready for use on belts, pockets, or bags.
Connect Headphones: Plug 3.5mm stereo headphones into the jack for private listening.

WARNING! Use only a single AAA battery. Do not mix old and new batteries. Ensure battery compartment is dry before insertion.

First-Time Setup

Power on the radio; follow these initial steps.

Set the Time: Press and hold the DISP button to enter time set mode. Use TUNING +/- buttons to adjust hours/minutes. Press DISP to confirm.
Select Band: Press BAND button to toggle between AM and FM.
Auto-Scan for Stations: Press and hold TUNING + or - button to start auto-scan. Release when a desired station is found.
Save Presets: Tune to a desired station. Press and hold a numbered button (1-10) for more than 2 seconds to save it to that preset location.

CAUTION! Keep battery contacts clean. Avoid exposing the unit to extreme temperatures during initial setup.

Specifications

Tuner Section: AM (530-1710 kHz), FM (87.5-108.0 MHz).
Preset Memory: 20 stations (10 AM, 10 FM).
Power Requirements: 1.5V DC (AAA battery x1).
Battery Life: Approx. 45 hours (Alkaline, earphone, FM).
Output: Headphone jack output: 3.5mm stereo. Speaker: Built-in monaural.
Display: Backlit LCD (Frequency, Time, Band, Battery).
Dimensions (approx.): 3 1/8" W x 4 1/8" H x 7/8" D (excluding projections).
Weight (approx.): 2.8 oz (including battery).
Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Front Panel Controls: POWER (VOLUME) Knob, BAND Button, TUNING +/- Buttons, PRESET Buttons (1-10), DISP Button.

Side Panel: LOCK Switch, Headphone Jack.

Basic Operation: Rotate POWER knob to turn on and adjust volume. Use TUNING buttons for manual tuning or press and hold for auto-scan. Press BAND to switch between AM/FM. Press numbered button (1-10) to recall a preset station. Press DISP to toggle display between frequency and time.

Backlight: Press any button (except LOCK) in dark conditions to illuminate display for 5 seconds.

Connecting Devices

Primarily designed for headphone use. Can be used with external audio recording devices via headphone jack.

Ensure radio is off or volume is low before connecting.
Insert the 3.5mm plug of headphones or an audio cable firmly into the headphone jack.
Adjust volume to a comfortable level.

Tip: For best stereo sound, use quality headphones. The built-in speaker is monaural.

Advanced Tuning Features

Utilizes digital tuning for precise station selection.

Manual Tuning: Press TUNING + or - briefly to change frequency in steps (10 kHz for AM, 0.1 MHz for FM).
Auto-Scan: Press and hold TUNING + or - . Scanning stops at the next receivable station. Release the button.
Direct Frequency Entry: Not available. Use manual tuning or presets.
Preset Scan: Not available on this model. Access presets directly via numbered buttons.
Fine Tuning (FM): In areas with weak signal, use manual tuning to find the clearest point.

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

Accessibility Features

Tactile Buttons: Raised buttons and distinct knob for easy operation by feel. Audible Click: Tuning buttons provide subtle feedback. Large Display: Backlit LCD with clear numerals. Lock Switch: Prevents accidental setting changes during activity.

Care & Cleaning

Remove battery before prolonged storage or cleaning. Wipe exterior with a soft, slightly damp cloth. Do not use solvents or abrasives.

CAUTION! Although water-resistant, do not submerge in water. Do not expose to direct heat sources such as radiators. Allow to dry completely if it gets wet before use or storage.

Regulatory Information

FCC Part 15: This device complies with Part 15 of the FCC Rules. Operation is subject to interference that may cause undesired operation. Copyright © Sony Corporation. Sony and Walkman are trademarks of Sony Corporation. For support, visit www.sony.com/electronics/support or contact Sony customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power / Display off	Dead battery, incorrect insertion	Replace with new AAA battery. Ensure correct polarity (+/-).
Poor reception / Static	Weak signal, location, antenna orientation	Move to a different location. Adjust the position of the radio. Ensure headphone cable is fully extended (acts as FM antenna).
Buttons not responding	Lock switch engaged	Slide the LOCK switch to the OFF (unlocked) position.
No sound from headphones	Volume low, jack not fully inserted	Increase volume. Ensure headphone plug is fully inserted into jack.
Preset stations lost	Battery removed for extended period	Preset memory is maintained by the battery. Replace battery and reprogram presets.
Display dim or blank	Backlight timeout, weak battery	Press a button to activate backlight. Replace battery if display remains dim.

Reset: Remove battery for more than 1 minute to reset all settings to factory default (time and presets will be lost).

Service: For service, contact authorized Sony service centers. Do not attempt to disassemble the unit.