Sony ICF-M770S Radio User Manual

The Sony ICF-M770S is a portable AM/FM radio with digital tuning, preset stations, clock with alarm function, sleep timer, and battery/power adapter operation. Features include large LCD display, telescopic antenna, built-in speaker, headphone jack, and easy-to-use controls for home, office, or travel use. 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 Alarm & Timer 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital AM/FM tuner, LCD display with clock, Preset memory buttons, Telescopic antenna, Headphone jack, DC input jack.

Feature	Description
AM/FM Tuner	Digital tuning for clear reception on both bands
LCD Display	Shows frequency, time, alarm status, and battery level
Preset Stations	Store up to 10 AM and 10 FM stations for quick access
Telescopic Antenna	Extendable for improved FM reception
Headphone Jack	For private listening (3.5mm stereo)
DC Input Jack	For use with optional AC power adapter
ALARM/SLEEP	Sets daily alarm or sleep timer function
BAND	Switches between AM and FM radio bands
VOLUME	Adjusts sound level
POWER	Turns radio on/off

Installation

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

Insert batteries: Open battery compartment, install 3 AA batteries observing correct polarity.
Extend antenna: Pull up telescopic antenna for FM reception.
Connect power (optional): Plug AC adapter into DC input jack and wall outlet.
Position radio: For best AM reception, rotate radio; for FM, adjust antenna direction.

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

First-Time Setup

Power on radio; follow these initial steps.

Set the clock: Hold CLOCK button, use TUNING buttons to set correct time, press CLOCK again.
Tune stations manually: Press BAND to select AM/FM, use TUNING buttons to find station.
Save preset stations: Tune to desired station, hold a numbered PRESET button (1-10) for 2 seconds.
Adjust volume: Use VOLUME control to comfortable listening level.

CAUTION! Keep away from moisture and extreme temperatures.

Specifications

Frequency Range: FM: 87.5-108 MHz, AM: 530-1710 kHz.
Tuning System: Digital PLL synthesizer.
Preset Memory: 10 stations for AM, 10 for FM.
Power Supply: 3 x AA batteries (not included) or DC 4.5V adapter (optional).
Speaker: Built-in dynamic speaker.
Headphone Output: 3.5mm stereo jack.
Display: LCD with backlight (time/frequency).
Dimensions: Approximately 150mm(W) x 95mm(H) x 30mm(D).
Weight: Approximately 300g (without batteries).

Controls and Settings

Front Panel: POWER, VOLUME, BAND, TUNING buttons, PRESET buttons (1-10), LCD display.

Top/Side: Telescopic antenna, Headphone jack, DC input jack.

Clock/Alarm: CLOCK button to set time. ALARM/SLEEP to set alarm time and activate sleep timer (15-90 minutes). Tuning: Manual with TUNING buttons or direct preset selection. Display: Shows current time, frequency, battery indicator, alarm status. Volume: Rotary control or buttons (depending on model).

Connecting Devices

Headphones: Plug into headphone jack for private listening. External antenna: For improved AM reception in weak areas (optional loop antenna). Power adapter: Use Sony AC-E45HG adapter or equivalent 4.5V DC.

Ensure radio is off before connecting devices.
Insert headphone plug fully into jack.
Match DC adapter polarity (center positive).

Tip: Use headphones to avoid disturbing others, especially at night.

Using the Alarm & Timer

Wake to radio or buzzer alarm; sleep timer turns radio off automatically.

Set alarm time: Hold ALARM/SLEEP, use TUNING to set time, press ALARM/SLEEP to confirm.
Select alarm source: Choose radio (last station) or buzzer in alarm settings.
Activate alarm: Press ALARM ON/OFF button; indicator appears on display.
Set sleep timer: Press SLEEP repeatedly to select duration (15, 30, 45, 60, 90 min).
Snooze: Press SNOOZE/LIGHT during alarm for extra 9 minutes sleep.

WARNING! Test alarm volume before relying on it. Battery alarm may not sound if batteries are weak.

Accessibility Features

Large display with adjustable contrast (if available in settings). Tactile buttons for easy operation. Headphone jack for private listening. Backlight for display in dark conditions (press LIGHT button).

Care & Cleaning

Remove batteries if not using for extended period. Clean with soft, dry cloth; do not use chemicals.

CAUTION! Do not expose to direct sunlight, heat sources, or water. Keep antenna fully retracted when storing.

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. For support, visit www.sony.com/electronics/support or contact Sony Customer Service at 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Dead batteries	Replace all batteries with new ones; check polarity.
Poor reception	Antenna position/location	Extend FM antenna fully; rotate radio for AM; move to window.
Display dim or blank	Weak batteries	Replace batteries; press LIGHT to check backlight.
Alarm not sounding	Settings/volume	Ensure alarm is ON; check alarm source (radio/buzzer); increase volume.
Presets lost	Batteries removed	Presets are maintained if batteries changed within 3 minutes; otherwise reprogram.
No sound from headphones	Connection/volume	Ensure plug fully inserted; check headphone function on another device.

Reset: Remove batteries for 1 minute to reset microcomputer if unit behaves erratically.

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