Sony Walkman SRF-M37 Radio User Manual

The Sony Walkman SRF-M37 is a compact, lightweight AM/FM stereo radio with a built-in speaker, stereo headphones, and a clip for easy portability. It features digital tuning with preset stations, auto-scan, bass boost for enhanced sound, and is powered by two AAA 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 Headphones 7. Tuning and Presets 8. Battery Information 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

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

Feature	Description
AM/FM Tuner	Digital tuning for AM and FM stereo bands
Built-in Speaker	For listening without headphones
Stereo Headphone Jack	For private listening with included headphones
Clip	Attaches to clothing or bag for portability
LCD Display	Shows frequency, preset number, battery status
Preset Stations	Store up to 10 stations (5 AM, 5 FM)
Auto-Scan	Automatically finds and plays stations
Bass Boost	Enhances low-frequency sound
Power Source	Two AAA batteries
Volume Control	Adjusts sound level for speaker or headphones

Installation

Unpack and inspect contents. Insert batteries and attach clip if needed.

Insert batteries: Open battery compartment, insert two AAA batteries observing polarity.
Attach clip: Slide clip onto back of radio if not pre-attached.
Connect headphones: Plug included stereo headphones into headphone jack.
Extend antenna: Fully extend telescopic antenna for best reception.

WARNING! Use only recommended battery type. Do not mix old and new batteries.

First-Time Setup

Power on radio; follow these steps to start listening.

Power on: Slide POWER switch to ON.
Select band: Press BAND to choose AM or FM.
Auto-scan stations: Press and hold SCAN to automatically find and play stations.
Set presets: Tune to desired station, press and hold a number (1-5) to store.
Adjust volume: Turn VOLUME knob to comfortable level.

CAUTION! Keep away from water and extreme temperatures.

Specifications

Tuner: AM (530-1710 kHz), FM (87.5-108 MHz).
Speaker: Built-in dynamic speaker.
Output: Headphone jack (stereo mini jack).
Power Supply: Two AAA batteries (DC 3V).
Battery Life: Approx. 50 hours (may vary by usage).
Dimensions: Approx. 85mm x 55mm x 20mm (without clip).
Weight: Approx. 70g (without batteries).
Operating Temp: 0°C to 40°C.

Controls and Settings

Access functions via buttons and knobs on the unit.

Front Panel: POWER switch, VOLUME knob, BAND button, SCAN button, PRESET buttons (1-5), BASS BOOST button.

Tuning: Manual tuning with TUNING buttons; auto-scan with SCAN. Presets: Store 5 AM and 5 FM stations. Sound: BASS BOOST enhances low frequencies; VOLUME adjusts loudness. Display: Shows frequency, band, preset number, battery indicator.

Connecting Headphones

Use included stereo headphones or compatible 3.5mm headphones.

Ensure radio is off or volume is low.
Plug headphone jack fully into headphone port.
Adjust volume to a safe level to prevent hearing damage.

Tip: For best stereo sound, ensure headphones are fully inserted.

Tuning and Presets

Supports manual tuning, auto-scan, and preset station memory.

Manual tuning: Press TUNING + or - to change frequency step by step.
Auto-scan: Press SCAN to find next station; press again to stop.
Store preset: Tune to station, press and hold a PRESET button (1-5) until display blinks.
Recall preset: Press the corresponding PRESET button.
Bass boost: Press BASS BOOST to enhance low frequencies (indicator lights).

WARNING! Do not use headphones at high volume for extended periods.

Battery Information

Low battery: Indicator flashes; replace batteries soon. To replace: Turn off radio, open compartment, remove old batteries, insert new ones with correct polarity.

Care & Cleaning

Remove batteries before cleaning. Use dry, soft cloth; do not use liquids.

CAUTION! Do not expose to water, heat, or direct sunlight for long periods.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Sony Corporation; trademarks owned by Sony. For support, visit www.sony.com/audio or contact Sony customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Dead batteries	Replace with new AAA batteries; check polarity.
Poor reception	Antenna not extended	Fully extend antenna; move to location with better signal.
No sound from speaker	Volume low/headphones plugged in	Increase volume; unplug headphones.
Presets lost	Batteries removed	Presets are lost when batteries are removed; reprogram stations.
Distorted sound	Weak signal/bass boost on	Improve antenna position; turn off bass boost.

Reset: Remove batteries for 1 minute to reset microcomputer.

Service: Contact Sony support or authorized service center.