Sony ICF-C743 User Manual

3-237-897-21(1)

FM/AM PLL Synthesized
Clock Radio

Operating Instructions

Dream Machine is a trademark of Sony Corporation.

ICF-C743

Sony Corporation © 2002 Printed in China

For customers in the USA
Please register this product on line at
Proper registration will enable us to send you periodic mailings about new products, services, and other
important announcements. Registering your product will also allow us to contact you in the unlikely
event that the product needs adjustment or modification. Thank you.

http://www.sony.com/productregistration.

WARNING

To prevent fire or shock hazard, do
not expose the unit to rain or
moisture.

This symbol is intended to alert the user
to the presence of uninsulated
“dangerous voltage” within the
product’s enclosure that may be of
sufficient magnitude to constitute a risk
of electric shock to persons.

This symbol is intended to alert the user
to the presence of important operating
and maintenance (servicing) instructions
in the literature accompanying the
appliance.

∗ The graphical symbols are on the AC power

adaptor enclosure.

You are cautioned that any changes or
modifications not expressly approved in this
manual could void your authority to operate
this equipment.

INFORMATION

This equipment has been tested and found to
comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference in a residential
installation. This equipment generates, uses, and
can radiate radio frequency energy and, if not
installed and used in accordance with the
instructions, may cause harmful interference to
radio communications. However, there is no
guarantee that interference will not occur in a
particular installation. If this equipment does cause
harmful interference to radio or television
reception, which can be determined by turning the
equipment off and on, the user is encouraged to try
to correct the interference by one or more of the
following measures:

—Reorient or relocate the receiving

antenna.

—Increase the separation between the

equipment and receiver.

—Connect the equipment into an outlet

on a circuit different from that to which
the receiver is connected.

—Consult the dealer or an experienced

radio/TV technician for help.

Before You Begin

Thank you for choosing the Sony Dream Machine.
The Dream Machine will give you many hours of
reliable service and listening pleasure.
Before operating your unit, please read these
instructions thoroughly and retain them for future
reference.

Features

• Dual alarm FM/AM
PLL (Phase Locked Loop) synthesized clock radio

• Easy preset digital tuning with 15 memory
presets

• Illumination light, that is most suitable as a
bedside interior.

• Various types of alarms—radio, buzzer and 4
melodies

• NAP timer sounds the buzzer after desired time
durations of between 10 to 120 minutes that can
be selected from 6 different time settings,
convenient for taking naps.

• LCD with backlight, and brightness adjustment
for the backlight.

Precautions

• Operate the unit only on 120 V AC, 60 Hz.

• To disconnect the power cord (mains lead), pull it
out the plug, not by the cord.

• Do not leave the unit in a location near a heat
source such as a radiator or airduct, or in a place
subject to direct sunlight, excessive dust,
mechanical vibration, or shock.

• Do not place the unit on surfaces (rugs, blankets,
etc.) or near materials (curtains, draperies) that
block the ventilation holes.

• Should any liquid or solid object fall into the unit,
unplug the unit and have it checked by qualified
personnel before operating it further.

• When the casing becomes soiled, clean it with a
soft cloth dampened with a mild detergent
solution. Never use abrasive cleaners or chemical
solvents, as they may mar the casing.

If you have any questions, please consult your
nearest Sony dealer.

Specifications

Time display

12-hour system

Frequency range

FM: 87.5 – 108 MHz
AM: 530 – 1 710 kHz

Speaker

Approx. 5.7 cm (2

Power output

200 mW (at 10 % harmonic distortion)

Power requirements

120 V AC, 60 Hz

Dimensions

Approx. 138 × 88.5 × 100 mm (w/h/d) (5

1

/2 × 4 inches) including projecting parts and

3
controls

Mass

Approx. 460 g (1 lb 0.2 oz)

Design and specifications are subject to change
without notice.

1

/4 inches) dia. 4 Ω

1

/2 ×

IMPORTANT SAFEGUARDS

For your protection, please read these safety instructions completely before operating the appliance,
and keep this manual for future reference.
Carefully observe all warnings, precautions and instructions on the appliance and in the operating
instructions, and adhere to them.

INSTALLATION

Water and Moisture

Do not use powerline operated appliances near water - for example, near a bathtub, washbowl,
kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, etc.

Heat

Do not place the appliance near or over a radiator or heat register, or where it is exposed to direct
sunlight.

Ventilation

The slots and openings in the cabinet are provided for necessary ventilation. To ensure reliable
operation of the appliance, and to protect it from overheating, these slots and openings must never be
blocked or covered.

-Never cover the slots and openings with a cloth or other materials.

-Never block the slots and openings by placing the appliance on a bed, sofa, rug or other similar
surface.

-Never place the appliance in a confined space, such as a bookcase, or built-in cabinet, unless proper
ventilation is provided.

Accessories

Do not place the appliance on an unstable cart, stand, tripod, bracket, or table. The appliance may fall,
causing serious injury to a child or an adult, and serious damage to the appliance. Use only a cart,
stand, tripod, bracket, or table recommended by Sony.

-An appliance and cart combination should be moved with care. Quick stops, excessive force, and
uneven surfaces may cause the appliance and cart combination to overturn.

Wall or Ceiling Mounting

If your appliance can be mounted to a wall or ceiling, mount it only as recommended by Sony.

USE

Power Source

This appliance should be operated only from the type of power source indicated on the marking label.
If you are not sure of the type of electrical power supplied to your home, consult your dealer or local
power company. For those appliances designed to operate from battery power, or other sources, refer
to the operating instructions.

Grounding or Polarization

This appliance is equipped with a polarized AC power cord plug (a plug having one blade wider than
the other), or with a three-wire grounding type plug (a plug having a third pin for grounding). Follow
the instructions below:

-For the appliance with a polarized AC power cord plug:

This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to
insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact
your electrician to have a suitable outlet installed. Do not defeat the safety purpose of the polarized
plug by forcing it in.

-For the appliance with a three-wire grounding type AC plug:

This plug will only fit into a grounding-type power outlet. This is a safety feature. If you are unable to
insert the plug into the outlet, contact your electrician to have a suitable outlet installed. Do not defeat
the safety purpose of the grounding plug.

Overloading

Do not overload wall outlets, extension cords or convenience receptacles beyond their capacity, since
this can result in fire or electric shock.

When not in use

Unplug the power cord of the appliance from the outlet when left unused for a long period of time.
To disconnect the cord, pull it out by grasping the plug. Never pull the plug out by the cord.

Power-Cord Protection

Route the power cord so that it is not likely to be walked on or pinched by items placed upon or
against them, paying particular attention to the plugs, receptacles, and the point where the cord exits
from the appliance.

Lightning

For added protection for this appliance during a lightning storm, or when it is left unattended and
unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable
system. This will prevent damage to the appliance due to lightning and powerline surges.

Object and Liquid Entry

Never push objects of any kind into the appliance through openings as they may touch dangerous
voltage points or short out parts that could result in a fire or electric shock. Never spill liquid of any
kind on the appliance.

Cleaning

Unplug the appliance from the wall outlet before cleaning or polishing it. Do not use liquid cleaners
or aerosol cleaners. Use a cloth lightly dampened with water for cleaning the exterior of the appliance.
Clean the appliance only as recommended by Sony.

Attachments

Do not use attachments not recommended by Sony, as they may cause hazards.

ANTENNAS

Outdoor Antenna Grounding

If an outdoor antenna or cable system is installed, follow the precautions below.
An outdoor antenna system should not be located in the vicinity of overhead power lines or other

electric light or power circuits, or where it can come in contact with such power lines or circuits.
WHEN INSTALLING AN OUTDOOR ANTENNA SYSTEM, EXTREME CARE SHOULD BE TAKEN
TO KEEP FROM CONTACTING SUCH POWER LINES OR CIRCUITS AS CONTACT WITH THEM
IS ALMOST INVARIABLY FATAL.

Be sure the antenna system is grounded so as to provide some protection against voltage surges and
built-up static charges. Section 810 of the National Electrical Code provides information with respect
to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an
antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connection
to grounding electrodes, and requirements for the grounding electrode.

Antenna Grounding According to the National
Electrical Code

Antenna Lead-in Wire

Ground
Clamps

Electric Service

NEC-NATIONAL
ELECTRICAL CODE

Equipment

SERVICE

Damage Requiring Service

Unplug the appliance from the wall outlet and refer servicing to qualified service personnel under the
following conditions:

-When the power cord or plug is damage or frayed.

-If liquid has been spilled or objects have fallen into the appliance.

-If the appliance has been exposed to rain or water.

-The appliance does not appear to operate normally or exhibits a marked change in performance.

-This indicates a need for service.

-If the appliance does not operate normally when following the operating instructions, adjust only
those controls that are specified in the operating instructions. Improper adjustment of other controls
may result in damage and will often require extensive work
by a qualified technician to restore the appliance to normal operation.

-If the appliance has been subject to excessive shock by being dropped, or the cabinet has been
damaged.

Servicing

Do not attempt to service the appliance yourself as opening or removing covers may expose you to
dangerous voltage or other hazards.
Refer all servicing to qualified service personnel.

Replacement parts

When replacement parts are required, be sure the service technician has used replacement parts
specified by Sony that have the same characteristics as the original parts.
Unauthorized substitutions may result in fire, electric shock, or other hazards.

Safety Check

Upon completion of any service or repairs to the appliance, ask the service technician to perform
routine safety checks (as specified by Sony) to determine that the appliance is in safe operating
condition.

Antenna Discharge Unit
(NEC Section 810-20)

Grounding Conductors
(NEC Section 810-20)

Ground Clamps

Power Service Grounding Electrode System
(NEC Art 250 Part H)

CLOCK

B

SOUND

10

20

30 40 50 60

BAND A BALARM

TUNE/TIME SET

AC power cord

RADIOBSOUND

FM12

AM
PM

SLEEP RADIO

A

12345

WAKE UP STA
PRESET

MHz
kHz

The PRESET TUNING STATION 3 button has a
tactile dot.

Setting the Clock

1 Plug in the unit.

“AM 12:00” flashes on the display.

2 Press CLOCK for a few seconds until a

beep sounds.

The hour starts to flash on the display.

3 Press TUNE/TIME SET + or – until the

correct hour appears.

To set the current time rapidly, hold down
TUNE/TIME SET + or –.

4 Press CLOCK once.
5 Repeat steps 3 and 4 to set the minute.

Two short beeps sound, and the counting of the
seconds starts.

If you quit during the clock setting, after about 65
seconds the previous display will return.
To set the current time from zero seconds, press

CLOCK with the time signal in step 5.

To change the display to the daylight saving
time (summer time) indication

Press D.S.T.

” is displayed and the time indication changes

“
to summer time.
To deactivate the summer time function, press

D.S.T. again.
To set the brightness of the backlight

Press BRIGHTNESS to select high, middle or low for
the display according to your preferences.

Playing the Radio

Manual Tuning

1 Press RADIO ON•SLEEP to turn on the

radio.

The display shows the band and frequency for
10 seconds and then changes back to the current
time.

2 Press BAND to select the band.

Each press changes the band as follows:

AM

When using FM1 or FM2 preset mode, you may
listen to the radio on either mode. (See “Preset
Tuning”.)

FM1

3 Press TUNE/TIME SET + or – to tune in to

the desired station.

Two short beeps sound when the minimum
frequency of each band is received during
tuning.

4 Adjust volume using VOLUME.

T o turn off the radio, press OFF•ALARM RESET.

To check the station being received

Press TUNE/TIME SET + or – lightly. The display
shows the band and frequency for 10 seconds and
then returns to the previous display.

FM2

ILLUMINATION

ON

ALARM

MODE

D.S.T.

BRIGHT-

NESS

OFF

AUTO

VOLUME

Illumination light

ALARM

RESET

OFF

SLEEP

RADIO

ON

PRESET TUNING

STATION SELECT/ PRESET

1

2 3 4 5

NAPSNOOZE / SLEEP OFF

Improving the
Reception

FM: The AC power cord functions as an FM

antenna. Extend the AC power cord fully to
increase reception sensitivity.

AM: Rotate the unit horizontally for optimum

reception. A ferrite bar is built in to the unit.
Do not operate the unit over a steel desk or
metal surface, as this may lead to interference
of reception.

Presetting Your
Favorite Station

Preset Tuning

You can preset up to 10 stations in FM (5 stations in
FM1, 5 stations in FM2), and 5 stations in AM.

Presetting a station
Example: To set FM 90 MHz in the PRESET
TUNING STATION 2 button for FM2.

1 Press RADIO ON•SLEEP to turn on the

radio.

2 Press BAND to select FM2.
3 Tune in to FM 90 MHz. (See “Manual

Tuning”.)

4 Hold down the PRESET TUNING

STATION 2 button for more than 2

seconds.

The preset number “2” and “ ” flash on
the display.
Two beeps sound, and “2” and “
flashing.

RADIOBSOUND

12345

A

SLEEP RADIO

FM12

MW
AM
LW
PM

To preset another station, repeat these steps.
To change the preset station, tune in to the
desired station and hold down the PRESET
TUNING STATION 1 to 5 button. The new
station will replace the previously preset station
on the preset button.

Tuning in to a preset station

1 Press RADIO ON•SLEEP to turn on the

radio.

2 Press BAND to select the band.
3 Press the desired PRESET TUNING

STATION button.

Do not hold down the PRESET TUNING
STATION button for more than a few seconds.

Otherwise, the station you have tuned in to will
be preset to that PRESET TUNING STATION
button and the previously preset station will be
canceled.

4 Adjust the volume using VOLUME.

After 10 seconds, the display will return to the
current time but the PRESET TUNING STATION
button number will remain.

WAKE UP STA

PRESET

MHz

kHz

” stop

Setting the
Illumination Light

You can change the setting of the illumination light
at the bottom of this unit.
Set ILLUMINATION to AUTO, ON or OFF. The
illumination light operates as follows:
AUTO: The illumination light turns on when the

radio is turned on.
The illumination light flashes when
ALARM A or B, or NAP timer sound comes
on.
The illumination light goes out when the
radio, the sound alarm or the NAP timer
sound is turned off.

ON: The illumination light is always lit.
OFF: The illumination light does not turn on.

Setting the Alarm

You can set two types of alarms, radio (ALARM A)
and sound (ALARM B).
The alarm will come on at the same time everyday.
Before setting the alarm, make sure to set the clock.
(See “Setting the Clock”)

Notes

• The factory setting alarm time for radio (ALARM
A) and sound (ALARM B) is “AM 12:00”.

• If you quit during the alarm setting, after about
65 seconds the previous display will return.

To Set the Radio Alarm
(ALARM A)

1 Press ALARM A for a few seconds until a

beep sounds.

“

” and the hour flash on the display.

RADIO

A

2 Press TUNE/TIME SET + or – to set the

desired hour.

3 Press ALARM A.
4 Repeat steps 2 and 3 to set the minute.

A beep sounds to confirm the setting of time.
“WAKE UP STA” appears and the preset
number flashes on the display.

5 Press TUNE/TIME SET + or – to select the

station you last listened or a preset station
as WAKE UP STA (station).

Each press of TUNE/TIME SET + changes
WAKE UP STA (station) as follows:

PRESET

-

(last station)

FM2 PRESET 1 to 5

Pressing TUNE/TIME SET – changes WAKE UP
STA (station) in reverse order.

6 Press ALARM A again.

Two beeps sound to confirm the setting.

To use ALARM A, set the alarm mode. (See
“Setting the Alarm Mode”.)
When the alarm comes on at the preset time,

” flashes on the display and WAKE UP

“

RADIO

A

STA (the station selected in step 5) comes on.
The radio is turned off automatically after about 60
minutes.

To check the alarm setting

Press ALARM A once. The display shows the preset
time.
If you press ALARM A again, the display shows
WAKE UP STA (station).
To return to the previous display, press CLOCK or
wait for a few seconds.

To Set the Sound Alarm
(ALARM B)

1 Press ALARM B for a few seconds until a

beep sounds.

“

” and the hour flash on the display.

SOUND

B

2 Press TUNE/TIME SET + or – to set the

desired hour.

3 Press ALARM B.
4 Repeat steps 2 and 3 to set the minute.

A beep sounds to confirm the setting of time.

5 Press TUNE/TIME SET + or – to select the

sound number of beep (1) or melodies (2
to 5). When selecting the number, you can
hear the sound of the number for 5
seconds.

6 Press ALARM B again.

Two beeps sound to confirm the setting.

To use ALARM B, set the alarm mode. (See
“Setting the Alarm Mode”.)
When the alarm comes on at the preset time,

“

” and the selected sound number flash on

SOUND

B

the display.
The sound is turned off automatically after about
60 minutes.

To check the alarm setting

Press ALARM B once. The display shows the preset
time and the selected sound number.
To return to the previous display, press CLOCK or
wait for a few seconds.

AM PRESET 1 to 5

FM1 PRESET 1 to 5

Setting the Alarm Mode

Before setting the alarm mode, be sure to set the
alarm time. (See “Setting the Alarm”)
Press ALARM MODE repeatedly until the desired
mode is selected.
Each press of ALARM MODE changes the
indication on the display as follows:

No alarm
Indication

The selected sound number is displayed with

”.

“

If the same alarm time is set for both radio and
sound alarm (ALARM A and B), the radio alarm
(ALARM A) takes priority.

A

A

RADIO

RADIO

B

SOUND

SOUND

B

To Doze for a Few More
Minutes

Press SNOOZE/SLEEP OFF.
The radio or sound turns off but will automatically
come on again after about 10 minutes. Each time
you press SNOOZE/SLEEP OFF, the snooze time
changes as follows:

The maximum length of the snooze time is 60
minutes.

The display shows the snooze time for a few
seconds and returns to show the current time.
When you press SNOOZE/SLEEP OFF after the
current time appeared, the snooze time starts from
10 minutes again.

To Stop the Alarm

Press OFF•ALARM RESET to turn off the alarm.
The alarm will come on again at the same time the
next day.

To Deactive the Alarm

Press ALARM MODE repeatedly so that “
and “

B

SOUND

” go off.

A

RADIO

Using the NAP Timer
(Count Down Timer)

The NAP timer sounds the buzzer after a preset
time duration.
Press NAP repeatedly until the desired minutes is
displayed.
Each press changes the display as follows:

OFF

(current time)

The NAP button lamp turns on, “ ” and the
NAP time are displayed for a few seconds.
NAP timer starts counting down the NAP time.
When selected NAP time has passed, the buzzer
comes on, and the NAP button lamp and “
on the display flash.
The buzzer is turned off automatically after about
60 minutes.

120

10

20

90

30

60

To Stop NAP Timer

Press NAP to turn off the buzzer.

To Deactive NAP Timer

Press NAP. The NAP button lamp and “ ” go
off.

Setting the Sleep
Timer

You can enjoy falling asleep to the radio using the
built-in sleep timer that turns off the radio
automatically after a preset duration.

Press RADIO ON•SLEEP.
The radio turns on. You can set the sleep timer to
durations of 90, 60, 30, or 15 minutes. Each press
changes the display as follows:

On

Two short beeps sound when the display returns to

“On”.
“ ” will appear in the display when the

duration time is set.
The radio will play for the time you set, then shut
off.

To turn off the radio before the preset time
Press SNOOZE/SLEEP OFF or OFF•ALARM RESET.

To Use Both Sleep Timer and
Alarm

You can fall asleep to the radio and also be
awakened by the radio or sound alarm at the preset
time.

1 Set the alarm. (See “Setting the Alarm”.)
2 Set the sleep timer. (See “Setting the Sleep

Timer”.)

90

15

60

30

Troubleshooting

Should any problem occur with the unit, make the
following simple checks to determine whether or
not servicing is required.
If the problem persists, consult your nearest Sony
dealer.

The clock does not show the correct time.

• Has an electrical power outage lasting more than
1 minutes occurred?

The radio or buzzer alarm does not sound at the
preset alarm time.

• Has the desired radio or buzzer alarm been
activated? (i.e. Is “
displayed?)

The radio alarm is activated but no sound comes
on at the preset alarm time.

• Has VOLUME been adjusted?

The preset stations may be deleted from the
memory, if a maintenance service is performed.
Please note down your settings in case you want to
preset them again.

”

”

A

RADIO

” or “

B

SOUND

”