Sony Walkman SRF-M85 Radio User Manual

The Sony Walkman SRF-M85 is a portable AM/FM stereo radio with built-in speaker, headphones, and belt clip. It features digital tuning with preset stations, auto-scan, LCD display with backlight, bass boost, 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 Radio Functions 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: AM/FM tuner, built-in speaker, headphone jack, belt clip, LCD display, and control buttons.

Feature	Description
AM/FM Tuner	Digital tuning with 10 preset stations (5 AM, 5 FM)
LCD Display	Shows frequency, time, battery status, and station preset number
Built-in Speaker	For listening without headphones
Headphone Jack	3.5mm stereo jack for private listening
Bass Boost	Enhances low-frequency sound
Auto-Scan	Automatically finds and stores available stations
Belt Clip	Attaches to clothing for portable use
Backlight	Illuminates LCD display in low light
Sleep Timer	Turns off radio after set time
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 polarity.
Attach belt clip: Slide clip onto back of radio until it clicks into place.
Connect headphones: Plug 3.5mm jack into headphone port for private listening.
For AC power: Connect optional AC adapter to DC IN jack.

WARNING! Do not mix old and new batteries. Remove batteries if not used for extended periods.

First-Time Setup

Power on radio; follow initial setup steps.

Set time: Press and hold CLOCK button, use TUNING buttons to set time.
Auto-scan stations: Press and hold AUTO SCAN to find and store available stations.
Set presets: Tune to desired station, press and hold preset number (1-10) to save.
Adjust settings: Use MENU to access bass boost, backlight duration, sleep timer.

CAUTION! Keep away from water and extreme temperatures.

Specifications

Tuning Range: FM 87.5-108 MHz, AM 530-1710 kHz.
Preset Memory: 10 stations (5 AM, 5 FM).
Audio Output: Built-in speaker (mono), Headphone jack (stereo).
Power Requirements: Two AA batteries (DC 3V) or AC adapter (optional).
Battery Life: Approx. 50 hours (varies by usage and battery type).
Dimensions: 3.5 x 2.2 x 0.8 inches (89 x 56 x 20 mm).
Weight: 4.2 oz (120 g) including batteries.
Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Front Panel: POWER, VOLUME, BAND (AM/FM), TUNING (+/-), PRESET (1-10), MENU.

Side Controls: BASS BOOST, BACKLIGHT, SLEEP, CLOCK, AUTO SCAN.

Menu Settings: Bass boost (On/Off), Backlight duration (5/10/15 sec), Sleep timer (15-90 min), Time set. Audio: Volume control, bass boost for enhanced low frequencies. Tuning: Manual tuning with TUNING buttons, auto-scan for automatic station search.

Connecting Devices

Headphones: 3.5mm stereo jack. AC Adapter: Optional DC IN jack.

Turn off radio before connecting devices.
Plug headphones fully into jack for stereo sound.
Use Sony recommended AC adapter (DC 3V, center positive) if needed.

Tip: For best audio quality, use quality headphones and ensure firm connections.

Using Radio Functions

Supports AM/FM listening with preset memory.

Power on: Press POWER button.
Select band: Press BAND to toggle between AM and FM.
Tune manually: Use TUNING +/- to find station.
Use presets: Press PRESET number (1-10) for saved station.
Auto-scan: Press and hold AUTO SCAN to automatically find and store stations.
Adjust volume: Use VOLUME buttons.
Bass boost: Press BASS BOOST to enhance low frequencies.
Sleep timer: Press SLEEP repeatedly to set shut-off time (15-90 min).
Backlight: Press BACKLIGHT to illuminate display.

WARNING! Do not expose to magnetic fields which may affect tuning.

Accessibility Features

Large buttons for easy operation. Backlight for low-light visibility. Tone control via bass boost.

Care & Cleaning

Remove batteries before cleaning. Use soft, dry cloth; avoid solvents.

CAUTION! Do not use abrasive cleaners; keep jacks free of debris.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Dead batteries	Replace with fresh AA batteries; check polarity.
Poor reception	Location/antenna	Move to different location; extend headphone cable (acts as FM antenna).
No sound from speaker	Headphone plugged in	Unplug headphones; speaker mutes when headphones connected.
Presets lost	Batteries removed	Presets reset when batteries removed; reprogram stations.
Display dim or blank	Low battery/backlight off	Replace batteries; press BACKLIGHT button.

Reset: Remove batteries for 30 seconds to reset all settings.

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