Sony ICF-904L Radio User Manual

The Sony ICF-904L is a portable AM/FM radio with digital tuning, LCD display, built-in speaker, headphone jack, telescopic antenna, and battery/power adapter operation. Features include preset stations, sleep timer, alarm function, and key lock. 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 Preset Stations 8. Alarm & Sleep Timer 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: LCD display with clock, Control buttons, Telescopic antenna, Headphone jack, DC input, Battery compartment.

Feature	Description
Telescopic antenna	For improved FM reception; adjustable length
LCD display	Shows frequency, time, alarm status, battery level
Headphone jack (3.5mm)	For private listening
DC input jack	For AC power adapter connection
Battery compartment	Holds 3 x AA batteries
POWER button	Turns radio on/off
BAND button	Switches between AM and FM bands
TUNING buttons	Manual tuning up/down
PRESET buttons	Access stored station presets (1-5)
ALARM/SLEEP button	Sets alarm and sleep timer functions

Installation

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

Install batteries: Open battery compartment, insert 3 AA batteries observing correct polarity.
Extend antenna: Pull telescopic antenna fully out for best FM reception.
Connect power adapter (optional): Plug DC jack into radio, then plug adapter into AC outlet.
For AM reception: Rotate radio for best signal; built-in ferrite bar antenna does not require extension.

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

First-Time Setup

Power on radio; set initial preferences.

Set time: Hold CLOCK button, use TUNING buttons to adjust hours/minutes, press CLOCK to confirm.
Select band: Press BAND to choose AM or FM.
Tune stations: Use TUNING buttons to manually find desired station.
Save presets: Tune to station, hold desired PRESET button (1-5) for 2 seconds until beep confirms.

CAUTION! Keep away from moisture and extreme temperatures.

Specifications

Model: Sony ICF-904L Portable Radio.
Bands: AM (530-1710 kHz), FM (87.5-108 MHz).
Power Supply: 3 x AA batteries (DC 4.5V) or AC adapter (DC 6V, 500mA).
Speaker: Built-in dynamic speaker.
Output: Headphone jack (3.5mm stereo).
Display: LCD with backlight.
Presets: 5 stations per band (AM/FM separately).
Functions: Sleep timer (15-90 min), Daily alarm, Key lock.
Dimensions: Approx. 135mm W x 85mm H x 30mm D.
Weight: Approx. 200g (without batteries).

Controls and Settings

Front panel controls: POWER, BAND, TUNING, PRESET 1-5, CLOCK, ALARM/SLEEP, LOCK.

Display icons: AM/FM indicator, battery level, alarm on, key lock, preset number.

Tuning: Manual with TUNING buttons. Volume: VOLUME knob on side. Key Lock: Press LOCK to disable buttons (except POWER). Backlight: Press any button to illuminate display briefly. Time display: Shows continuously when radio is off.

Connecting Devices

Headphones: Plug into 3.5mm jack (disables internal speaker). External power: Use Sony AC-E605A adapter or equivalent (DC 6V, center positive).

Ensure radio is off before connecting headphones or power adapter.
For headphones, insert plug fully; adjust volume to low level first.
When using adapter, batteries are automatically disconnected.

Tip: Use recommended adapter to avoid damage.

Using Preset Stations

Store up to 5 AM and 5 FM stations.

Tune to desired station using BAND and TUNING buttons.
Hold a PRESET button (1-5) for 2 seconds until display shows "MEM" and beeps.
Recall: Press POWER to turn on, press BAND to select band, press desired PRESET button.
To overwrite: Repeat storing process with new station.
Scan presets: Briefly press PRESET buttons to cycle through saved stations.

Note: Presets are retained when batteries are removed or power is disconnected.

Alarm & Sleep Timer

Alarm: Wake to radio or buzzer. Sleep Timer: Automatically turns radio off.

Set alarm time: Hold ALARM/SLEEP, use TUNING to set time, press ALARM/SLEEP to confirm.
Select alarm source: Press ALARM/SLEEP repeatedly to choose radio (last station) or buzzer.
Activate/deactivate: Press ALARM/SLEEP briefly to toggle alarm on/off (alarm icon shows).
Sleep timer: Press SLEEP repeatedly to set 15, 30, 45, 60, 90 minutes; radio turns off after set time.
Snooze: Press any button during alarm to silence for 9 minutes.

Care & Cleaning

Remove batteries if not used for extended period. Clean with dry, soft cloth.

CAUTION! Do not use solvents or water. Keep antenna fully retracted when not in use.

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 polarity	Replace batteries; ensure correct orientation.
Poor FM reception	Antenna not extended, location	Extend antenna fully; move radio near window.
No sound from speaker	Headphone plugged in, volume low	Unplug headphones; increase volume.
Display dim or blank	Weak batteries	Replace batteries; check connections.
Alarm not sounding	Alarm off, volume low	Ensure alarm is activated; increase volume.
Buttons not responding	Key lock activated	Press LOCK button to deactivate key lock.

Reset: Remove batteries and adapter for 1 minute to reset microcomputer.

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