Sony DREAM MACHINE ICF-C243 Radio User Manual

The Sony DREAM MACHINE ICF-C243 is an AM/FM digital clock radio featuring dual alarm functions, snooze, sleep timer, adjustable brightness display, battery backup, and easy-to-use controls. Designed for reliable bedside use with clear sound and precise timekeeping. 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 Alarm Functions 8. Radio Operation 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital LCD display, AM/FM tuner, Dual alarm system, Snooze function, Sleep timer, Battery backup compartment, Power cord, Built-in speaker.

Feature	Description
Digital Display	Shows time, alarm settings, and radio frequency
AM/FM Tuner	For receiving AM and FM radio stations
Dual Alarm	Set two separate wake-up times (ALARM 1 & ALARM 2)
Snooze Function	Temporarily silences alarm for extra sleep time
Sleep Timer	Automatically turns off radio after set period
Battery Backup	Maintains time and alarm settings during power outage
Display Dimmer	Adjusts display brightness for nighttime use
Power Cord	For AC power connection
Built-in Speaker	Provides clear audio output
Headphone Jack	For private listening (if applicable)

Installation

Unpack and inspect contents. Place on stable, flat surface near AC outlet.

Insert backup batteries: Open battery compartment, install two AA batteries (not included) for memory backup.
Connect to power: Plug the AC power cord into a standard 120V outlet.
Position antenna: Extend the FM wire antenna for better reception; AM uses internal ferrite bar.
Set time: Press and hold TIME SET button, adjust with UP/DOWN buttons.

WARNING! Use only recommended battery type. Do not place near heat sources or water.

First-Time Setup

Plug in unit; follow initial setup steps.

Set current time: Use TIME SET button and UP/DOWN to adjust hour and minute.
Set alarm times: Press ALARM 1 or ALARM 2 button, then use UP/DOWN to set desired wake time.
Select alarm sound: Choose between buzzer or radio wake-up for each alarm.
Tune radio stations: Use TUNING buttons to find desired AM/FM stations; press MEMORY to store.
Adjust display brightness: Use DIMMER button to set preferred level.

CAUTION! Ensure proper ventilation; do not block vents.

Specifications

Model: Sony ICF-C243 Dream Machine.
Tuning Range: FM 87.5-108 MHz, AM 530-1710 kHz.
Power Supply: AC 120V, 60Hz; Battery backup: 2 x AA (for memory).
Display: Digital LCD with adjustable brightness.
Alarm Functions: Dual alarm with snooze (approx. 9 minutes).
Sleep Timer: 15-90 minutes in 15-minute increments.
Speaker: Built-in mono speaker.
Dimensions: Standard bedside clock radio size.
Operating Temp: 41°F to 95°F (5°C to 35°C).

Controls and Settings

Front Panel: POWER, ALARM 1, ALARM 2, SNOOZE/DIMMER, SLEEP, TIME SET, TUNING UP/DOWN, BAND (AM/FM), MEMORY.

Display Indicators: ALARM 1/ALARM 2 icons, PM indicator, Radio frequency, SLEEP timer countdown.

Time Setting: Hold TIME SET, adjust with UP/DOWN. Alarm Setting: Press ALARM 1 or 2, set time with UP/DOWN, choose buzzer/radio. Radio Tuning: Press BAND to select AM/FM, use TUNING to find station, MEMORY to store. Sleep Timer: Press SLEEP repeatedly to set duration (15-90 min). Snooze: Press SNOOZE during alarm for extra sleep. Dimmer: Press SNOOZE/DIMMER to cycle brightness levels.

Connecting Devices

AUX input (if available): For external audio sources. Headphone jack: For private listening.

Turn off radio before connecting external devices.
Connect audio cable from external device to AUX IN jack (if equipped).
Insert headphones into headphone jack to mute internal speaker.

Tip: Use shielded cables for better audio quality and reduced interference.

Using Alarm Functions

Dual alarms with choice of buzzer or radio wake-up.

Set alarm time: Press ALARM 1 or ALARM 2, use UP/DOWN to set hour/minute.
Select alarm type: While setting, press RADIO/BUZZER to choose wake sound.
Activate alarm: Ensure ALARM ON indicator is lit for desired alarm.
Snooze: When alarm sounds, press SNOOZE to silence for approx. 9 minutes.
Deactivate alarm: Press ALARM 1 or ALARM 2 again to turn off alarm indicator.
Radio alarm volume: Adjust with VOLUME control when radio is active.

WARNING! Do not rely solely on alarm during power outages; use battery backup for timekeeping only.

Radio Operation

Manual tuning and preset memory for AM/FM stations.

Turn on: Press POWER button.
Select band: Press BAND to toggle between AM and FM.
Tune station: Use TUNING UP/DOWN buttons to find desired frequency.
Store preset: Press and hold MEMORY, then press a number button (1-5) to assign.
Recall preset: Press the corresponding number button (1-5) for stored station.
Sleep timer: Press SLEEP repeatedly to set auto-off duration (15-90 min).
Adjust volume: Use VOLUME control knob or buttons.

Note: For best FM reception, fully extend wire antenna and adjust position.

Care & Cleaning

Unplug from AC outlet before cleaning. Use soft, dry cloth to wipe exterior. Do not use liquid cleaners or aerosols.

CAUTION! Avoid moisture entering vents or controls. Do not immerse in water.

Regulatory Information

FCC Part 15: This device complies with Part 15 of FCC rules. Operation is subject to interference that may cause undesired operation. Copyright © Sony Corporation. Sony and Dream Machine are trademarks of Sony Group 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/display blank	Power cord disconnected	Ensure AC plug is firmly in outlet; check outlet function.
Time resets after outage	Dead backup batteries	Replace both AA batteries in backup compartment.
Alarm does not sound	Alarm not activated/volume low	Check ALARM ON indicator; increase volume for radio alarm.
Poor radio reception	Antenna position/interference	Extend FM wire antenna fully; reposition radio; avoid electronic interference.
Buttons not responding	Static discharge/temp extreme	Unplug for 1 minute, then reconnect; operate within specified temperature range.
Distorted sound	Weak signal/volume too high	Reposition for better reception; reduce volume level.

Reset: Unplug unit, remove backup batteries for 5 minutes, then reinstall and plug in.

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