Sony ICF-M770L Radio User Manual

The Sony ICF-M770L is a portable AM/FM radio with digital tuning, built-in speaker, headphone jack, telescopic antenna, LCD display with backlight, clock with alarm function, sleep timer, battery power operation, and AC adapter compatibility. It features preset station memory, auto-scan tuning, and tone control. 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. Clock and Timer Functions 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: LCD display with backlight, telescopic antenna, built-in speaker, headphone jack, control buttons, battery compartment, and DC input jack.

Feature	Description
Telescopic Antenna	For improved FM reception; extend fully for best results
LCD Display	Shows frequency, time, preset number, and battery level
Headphone Jack (3.5mm)	For private listening
DC Input Jack	For use with optional AC adapter (not included)
Battery Compartment	Holds batteries for portable operation
POWER Button	Turns radio on/off
BAND Button	Switches between AM and FM bands
TUNING Buttons	Manual tuning up/down; press and hold for auto-scan
PRESET Buttons	Store and recall up to 10 preset stations (5 per band)
VOLUME Control	Adjusts sound level

Installation

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

Install batteries: Open battery compartment, insert batteries observing correct polarity (+/-).
Extend antenna: Fully extend telescopic antenna for FM reception.
Connect AC adapter (optional): Plug DC output into radio's DC jack, then plug adapter into AC outlet.
Connect headphones (optional): Plug into headphone jack for private listening.

WARNING! Use only recommended battery type. Do not mix old and new batteries. Ensure AC adapter voltage matches radio requirements.

First-Time Setup

Power on radio; follow initial setup steps.

Set the clock: Press and hold CLOCK button, use TUNING buttons to set time, press CLOCK to confirm.
Select band: Press BAND button to choose AM or FM.
Tune to a station: Use TUNING buttons manually or press and hold for auto-scan.
Save presets: Tune to desired station, press and hold a PRESET button (1-5) until display confirms.
Adjust volume: Turn VOLUME control to comfortable level.

CAUTION! Keep away from moisture and extreme temperatures during setup.

Specifications

Frequency Range: FM: 87.5-108 MHz, AM: 530-1710 kHz.
Tuning System: Digital PLL synthesizer.
Speaker: Built-in dynamic speaker.
Power Output: 100 mW (at 10% distortion).
Power Source: 3 x AA batteries (DC 4.5V) or optional AC adapter (DC 4.5V, 300mA).
Battery Life: Approx. 50 hours (varies with usage and battery type).
Headphone Output: 3.5mm stereo jack.
Dimensions: Approx. 135mm (W) x 80mm (H) x 30mm (D).
Weight: Approx. 200g (without batteries).
Operating Temp: 0°C to 40°C.

Controls and Settings

Access functions via front panel buttons. LCD Display: Shows time, frequency, band, preset number, battery indicator, and alarm status.

Buttons: POWER, BAND, TUNING (UP/DOWN), PRESET (1-5), CLOCK, ALARM ON/OFF, SLEEP, VOLUME control.

Tuning: Manual tuning with TUNING buttons; auto-scan by pressing and holding TUNING. Presets: Store up to 5 stations per band (10 total). Clock: Set time with CLOCK button. Alarm: Set alarm time; activate with ALARM ON/OFF. Sleep Timer: Set sleep duration (15-90 minutes) with SLEEP button. Tone: Adjustable via menu (Normal/Treble/Bass).

Connecting Devices

Headphones: 3.5mm jack. AC Adapter: DC input jack.

Turn off radio before connecting devices.
For headphones: Plug into headphone jack; audio automatically routes to headphones.
For AC adapter: Ensure radio is off, plug adapter into DC jack, then into AC outlet.

Tip: Use headphones for private listening; disconnect AC adapter before inserting/removing batteries.

Using the Radio

Supports AM/FM reception with preset memory.

Power on: Press POWER button.
Select band: Press BAND to toggle AM/FM.
Tune station: Use TUNING buttons or auto-scan (press and hold).
Recall preset: Press corresponding PRESET button (1-5).
Adjust volume: Turn VOLUME control.
Use tone control: Access menu to select Normal, Treble, or Bass setting.
Turn off: Press POWER button.

WARNING! Do not expose to strong magnetic fields. Extend antenna fully for best FM reception.

Clock and Timer Functions

Clock: Displays time continuously when radio is off (battery powered). Alarm: Set alarm time; radio turns on at set time at last volume. Sleep Timer: Radio turns off automatically after set duration (15, 30, 45, 60, 90 minutes).

Set clock: Hold CLOCK, adjust with TUNING, press CLOCK to confirm.
Set alarm: Hold ALARM ON/OFF, set time with TUNING, press ALARM ON/OFF to confirm; press button to toggle alarm on/off.
Set sleep: Press SLEEP repeatedly to select duration; display shows countdown.

Care & Cleaning

Remove batteries before cleaning. Use soft, dry cloth; do not use solvents or abrasive cleaners.

CAUTION! Keep away from water and liquids. Do not disassemble; no user-serviceable parts inside.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. 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/incorrect adapter	Replace batteries; ensure correct AC adapter polarity and voltage.
Poor FM reception	Antenna not extended/location	Extend antenna fully; move radio to different location.
No sound from speaker	Volume low/headphones plugged in	Increase volume; unplug headphones.
Clock resets	Batteries removed/dead	Replace batteries without interrupting power; use AC adapter.
Presets lost	Batteries dead/removed	Replace batteries promptly; reprogram presets.
Alarm not sounding	Alarm off/volume low	Ensure alarm is ON; check volume level.

Reset: Remove batteries for 1 minute to reset microcomputer.

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