Sony ICFCS20BT Manual

ˎ

Ô Useful Functions

You can enjoy hands-free calling via BLUETOOTH connection with a BLUETOOTH 
mobile phone that has a music function and supports the BLUETOOTH profile 
A2DP (Advanced Audio Distribution Profile), and HFP (Hands-free Profile) or HSP 
(Headset Profile).
If your BLUETOOTH mobile phone supports both HFP and HSP, set to HFP.

Operations may vary depending on the BLUETOOTH mobile phone. Refer also to 
the operating instructions supplied with your mobile phone.

Make the BLUETOOTH connection between the system and 
the mobile phone.

For details on the BLUETOOTH connection procedure, see “How to Make 
Wireless Connection with BLUETOOTH Devices.” The BLUETOOTH connection is 
established and “  (BLUETOOTH)” in the display stays on.

Start playback on the BLUETOOTH mobile phone, then 
adjust the volume.

Set the volume of the BLUETOOTH mobile phone to a moderate level, and 
press 

VOLUME –/+ 

 on the system.

When the BLUETOOTH device is connected to the system (“  (BLUETOOTH)” is 
lit), you can use hands-free calling even if the BLUETOOTH function is not 
activated.
When there is an incoming call or outgoing call, the system automatically 
changes to the BLUETOOTH function.

Operate the BLUETOOTH mobile phone. Check that a dialing tone is heard on the 
system and talk into the system. If no dialing tone is heard, press 

 (call) 

 on 

the system for about 2 seconds to change the call device to the system.

When an incoming call arrives, the playback or radio pauses and a ring tone is 
heard from the system. Press 

 (call) 

 on the system and talk into the system.

ˎ

ˎ If no ring tone is heard from the system when an incoming call arrives, stop playback or radio 

and press 

 (call) 

 to talk.

ˎ

ˎ You can use the hands-free calling when playback is completed.

ˎ

ˎ During a call, press VOLUME –/+  on the system to adjust the volume. The volume of a call 

and that of a playback are set separately.

ˎ

ˎ When using a mobile phone, keep it 50 cm or more away from the system. If they are too 

close together, noise may be heard.

Press 

 (call) 

. If you were listening to music with any function when the call 

arrived, music will be resumed when the call has finished.

Do any of the following to terminate the BLUETOOTH connection.

ˎ

ˎ Set the BLUETOOTH function of the BLUETOOTH device to off. For details, refer 

to the operating instructions supplied with the device.

ˎ

ˎ Turn off the BLUETOOTH device.

ˎ

ˎ Touch the system with the smartphone again to disconnect (NFC compatible 

smartphones only).

Available functions may vary depending on the BLUETOOTH mobile phone, or the 
profiles supported by the BLUETOOTH mobile phone. Refer to the operating 
instructions supplied with the BLUETOOTH mobile phone.



Standby

ˎ

ˎ Press once to start voice dial (voice dial compatible 

mobile phones only).

ˎ

ˎ Press and hold for a few seconds to redial the phone 

number that is dialed last time.

Outgoing call

ˎ

ˎ Press once to cancel outgoing call.

ˎ

ˎ Press and hold for a few seconds to change call 

device between the system and mobile phone.

Incoming call

ˎ

ˎ Press once to answer call.

ˎ

ˎ Press and hold for a few seconds to reject call.

During call

ˎ

ˎ Press once to finish call.

ˎ

ˎ Press and hold for a few seconds to change call 

device between the system and mobile phone.

You can enjoy hands-free calling with another BLUETOOTH mobile phone while 
listening to music with a BLUETOOTH music player.

ˎ

ˎ One-touch connection (NFC) cannot be used in this procedure.

ˎ

ˎ Operations may vary depending on the BLUETOOTH device. This type of 

BLUETOOTH connection may not be established depending on the combination 
of the BLUETOOTH devices. Refer also to the operating instructions supplied 
with your BLUETOOTH devices.

Make the BLUETOOTH connections between the system 
and a BLUETOOTH music player via A2DP, and between the 
system and a BLUETOOTH mobile phone via HFP or HSP.

For details on the BLUETOOTH connection procedure, see “How to Make 
Wireless Connection with BLUETOOTH Devices.” The BLUETOOTH connection is 
established and “  (BLUETOOTH)” in the display stays on.
Tips

ˎ

ˎ To use only the calling function of a BLUETOOTH mobile phone that also has a music 

function, establish BLUETOOTH connection between the system and the mobile phone 
via HFP or HSP, not via A2DP.

ˎ

ˎ Depending on the BLUETOOTH mobile phone, while the BLUETOOTH connection is 

established via HFP or HSP, the other BLUETOOTH connection via A2DP may also be 
occupied by the same BLUETOOTH mobile phone. A BLUETOOTH music player cannot be 
connected with this system in this case.

ˎ

ˎ To make the same connection with the same devices after turning the system off, follow 

this procedure again.

ˎ

ˎ You can set the alarm mode from the following.

ˎ

ˋ  “FM,”  “AM”: Set the radio alarm.

ˎ

ˋ  “USB”: Set the alarm to sound from an iPhone/iPod via USB connection.

ˎ

ˋ  “BLUETOOTH”: Set the alarm to sound from a BLUETOOTH device, such as 

smartphone, iPod, etc., via BLUETOOTH connection.

ˎ

ˋ  “BUZZER”: Set the buzzer alarm.

ˎ

ˎ Set the clock to the current time before setting the alarm, so that the alarm will 

sound at the correct time. (See “Setting the clock for the first time.”)

Right side of the system

You can set alarm A and B. To set the alarm A, use 

A 

 and ALARM TIME SET 

+/– 

. To set alarm B, use B  and ALARM TIME SET +/– .

The following explains how to set the alarm A.

Press and hold 

 

 until the hour begins to flash in the 

display.

“

” and “WAKE UP” light up and the hour flashes in the display.

Press 

 

 to select the following setting 

items, then press 

 

 to confirm.

Each time you press 

ALARM TIME SET +/– 

, the currently selected item 

begins to flash.
Once you confirm the setting by pressing 

A 

, the following setting item 

begins to flash.

ˎ

ˎ Hour, minute: Press and hold ALARM TIME SET +/–  to change the hour 

and minute digits quickly.

ˎ

ˎ Days of the week: Select one of the following three types. 

Every day: “MON TUE WED THU FRI SAT SUN” 
Week day: “MON TUE WED THU FRI” 
Weekend: “SAT SUN”

Press 

 

 to select the alarm mode, then 

press 

 

 to confirm.

Select one of the following.

ˎ

ˎ “FM,” “AM”: Set the radio alarm. Proceed to step 4.

ˎ

ˎ “USB”: Set the alarm to sound from an iPhone/iPod via USB connection. 

Skip step 4, and proceed to step 5.

ˎ

ˎ “BLUETOOTH”: Set the alarm to sound from a BLUETOOTH device, such as 

smartphone, iPod, etc., via BLUETOOTH connection. Skip step 4, and proceed 
to step 5.

ˎ

ˎ “BUZZER”: Set the buzzer alarm. The alarm setting is completed. The 

display returns to clock and “

” lights up in the display. You do not need to 

do step 4 or later.

Press 

 

 to select the radio station, 

then press A 

 to confirm.

Select the desired preset number or “- -.” “- -” is the last station you listened 
to.

Press 

 

 to adjust the volume, then 

press 

 

 to confirm.

The alarm setting is completed. The display returns to clock and “

” lights up 

in the display.

When “USB” or “BLUETOOTH” is selected as the alarm 
mode, connect an iPhone/iPod via USB or a BLUETOOTH 
device before the alarm sounds.

If the system does not connect to the BLUETOOTH device, at the alarm time, 
the system tries to establish BLUETOOTH connection with the BLUETOOTH 
device connected to the system last time. 
If the system cannot connect to the BLUETOOTH device, or does not connect 
to an iPhone/iPod via USB, the alarm will be the buzzer. 
If you set “USB” as the alarm mode, and a smartphone is connected via USB, 
the alarm will be the buzzer.

Press 

ALARM RESET 

 to turn off the alarm. The alarm will sound again at the 

same time the next day.

Press 

 

 once while the alarm sounds.

The alarm sound turns off but will automatically come on again after about 10 
minutes.
You can change the snooze time as follows by pressing 

SNOOZE 

 

repeatedly. 

To stop the snooze timer, press 

ALARM RESET 

.

Confirm an alarm 
time setting

Press 

ALARM TIME SET +/– 

.

The setting will be displayed for about 4 seconds.

Change an alarm 
time setting

1  Press and hold ALARM TIME SET +/– 

 until the 

alarm time digits begin to change in the display. 
You can change the alarm time step by step by 
pressing 

ALARM TIME SET +/– 

 repeatedly.

2   Release  ALARM TIME SET +/– 

 when the desired 

alarm time is displayed.

Turn off the alarm 
sound once

Press 

SNOOZE 

 once while the alarm sounds.

Stop the alarm

Press 

ALARM RESET 

.

Deactivate the alarm

Press 

A 

 again.

“

” turns off in the display, and the alarm function is 

deactivated. 
To activate the alarm again, press 

A 

 again.

ˎ

ˎ Even if the alarm is deactivated, the alarm will be activated when you change the alarm 

setting.

ˎ

ˎ When “USB” or “BLUETOOTH” is selected as the alarm mode, only the buzzer alarm will sound 

if an iPhone/iPod is not connected via USB, or a BLUETOOTH device is not connected, or 
music is not stored in the device, or the device is turned off.

ˎ

ˎ When Auto DST/summer time adjustment is set, the alarm sounds as follows:

ˎ

ˋIf the alarm is set between 2:00 AM and 3:00 AM, and daylight saving time begins, the 

alarm will sound at 3:00 AM.
ˎ

ˋIf the alarm is set between 1:00 AM and 2:00 AM, and daylight saving time ends, the alarm 

will sound twice.

ˎ

ˎ The volume of the buzzer is not adjustable.

ˎ

ˎ If the same alarm time is set for both alarm A and B, alarm A takes priority.

ˎ

ˎ If no operation is performed while the alarm is sounding, the alarm will stop after about 60 

minutes.

In the event of a power interruption, the buzzer alarm will last about 5 minutes if the battery is 
not weak. However, certain functions will be affected as follows:

ˎ

ˎ The backlight will not light up.

ˎ

ˎ If the alarm mode is set to “USB,” “BLUETOOTH,” “FM” or “AM,” it will change to buzzer 

automatically.

ˎ

ˎ If ALARM RESET  is not pressed, the alarm will sound for about 5 minutes.

ˎ

ˎ If “” lights up in the display, the alarm will not sound in the event of a power interruption. 

Replace the battery if “

” lights up.

ˎ

ˎ The snooze function cannot be set during a power interruption.

ˎ

ˎ During a power interruption, each alarm will sound at the set time only once.

You can fall asleep listening to radio or music from the connected device using 
the sleep timer. The system stops radio or playback automatically after a preset 
duration.

Right side of the system

Press 

 

 while listening to radio or music.

“SLEEP” lights up and the sleep time duration begins to flash in the display.

Press 

 

 to select the sleep time duration.

You can change the sleep time duration (in minutes) as follows by pressing 
SLEEP 

 repeatedly. Only “OFF” does not flash.

The sleep time duration flashes for a few seconds, then the display returns to 
the clock. The sleep timer setting is completed and the sleep timer starts.
“SLEEP” lights up in the display, and the system will stop radio or playback 
automatically after the setting duration.

Press 

OFF 

.

Press 

SLEEP 

. You can change the sleep time duration after the sleep timer has 

been activated.

Press 

SLEEP 

 to select “OFF.”

ˎ

ˎ Music playback on a device connected to the AUDIO IN jack does not stop automatically. To 

stop playback on the connected device, operate the connected device.

ˎ

ˎ When the alarm time is set during the sleep timer duration, the sleep timer will be 

deactivated automatically when the alarm sounds.

Press 

 

 to select the sound effect.

The sound effect setting lights up in the display.

You can change the sound effect as follows by pressing 

SOUND 

 

repeatedly.

MEGA BASS

High-quality bass sound will be heard.

MEGA BASS
MEGA Xpand

Both high-quality bass and surround sound will be 
heard.

MEGA Xpand

Surround sound will be heard.

Off

The sound effect is off.

ˎ

Ô Others

Keep the AC plug connected to the wall outlet, then open 
the battery compartment on the bottom of the system.

1   Fully loosen the screw.

2   Push the tab and 

pull up the lid.

Remove the old battery and insert a new one in the battery 
compartment with the 

 side facing up.

CR2032

Replace the battery compartment lid and tighten the 
screw.

Press FUNCTION,   BLUETOOTH or SNOOZE/ BRIGHTNESS 
on the system to turn off “

” in the display.

ˎ

ˎ When you replace the battery, do not disconnect the plug from the AC outlet. Otherwise, the 

current date, current time, alarm and station presets will be erased.

ˎ

ˎ If you are not going to use the system for a long time, remove the battery to avoid any 

damage that may be caused by leakage or corrosion.

Press BRIGHTNESS 

.

You can change the four levels of brightness as follows by pressing 
BRIGHTNESS 

 repeatedly.

High (default)

Low

Off

Middle

Even if brightness level is set to Off, it will change to Low while the alarm is 
sounding. 
Press and hold 

BRIGHTNESS 

 to turn off the display directly.

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
 

With 5 ohm loads both channels driven, from 150 Hz - 
10,000 Hz; rated 2 watts per channel minimum RMS power, with 
no more than 10 % total harmonic distortion.

Switching between 12-hour system (default) and 24-hour system.

Speaker system  50 mm (2 in)
Enclosure type  Bass reflex

Reference output power 

 

2 W + 2 W (10 % T.H.D., 1 kHz, 5 Ω)

Input 

Stereo mini jack × 1

Input 

USB port (type A)

Supported sampling frequencies/bit 

 

USB input: Maximum 44.1 kHz/16 bit

Communication System 

 

BLUETOOTH Specification version 3.0

Output 

BLUETOOTH Specification Power Class 2

Maximum communication range   

Line of sight approx. 10 m (30 ft)*

1

Frequency band  2.4 GHz band (2.4000 GHz - 2.4835 GHz)
Modulation method   

FHSS

Compatible BLUETOOTH Profiles*

2

 

 

A2DP (Advanced Audio Distribution Profile) 
AVRCP (Audio Video Remote Control Profile) 
HSP (Headset Profile) 
HFP (Hands-free Profile) 
SPP (Serial Port Profile)

Supported Codec*

3

 

 

SBC*

4

Transmission range (A2DP) 

 

20 Hz - 20,000 Hz (Sampling frequency 44.1 kHz)

*

1

  The actual range will vary depending on factors such as obstacles between 

devices, magnetic fields around a microwave oven, static electricity, reception 
sensitivity, antenna’s performance, operating system, software application, etc.

*

2

  BLUETOOTH standard profiles indicate the purpose of BLUETOOTH 

communication between devices.

*

3

  Codec: Audio signal compression and conversion format

*

4

  Subband Codec

Type: 

Electret condenser

Direction characteristic: 

 

Omni directional

Effective frequency range: 

 

200 Hz – 3,600 Hz

Frequency range

FM

87.5 MHz - 108 MHz

0.1 MHz

AM

530 kHz - 1,710 kHz

10 kHz

Power 

120 V AC, 60 Hz, 16 W

For clock back up 3V DC, CR2032 battery (1)
Dimensions 

Approximately 281 mm × 126 mm × 80 mm  
(11 1/8 in × 5 in × 3 1/4 in) (w/h/d)

Mass 

Approximately 1.3 kg (2 lb 14 oz) including batteries

Supplied accessories   

AM loop antenna (1) 
BLUETOOTH Startup Guide (1) 
Operating Instructions (this document) (1)

The compatible iPhone/iPad/iPod models are as follows.
Update the software of the iPhone/iPad/iPod to the latest version before using it 
with this system.

iPhone 5
iPhone 4S
iPhone 4
iPod touch (5th generation)
iPod touch (4th generation)
iPod touch (3rd generation)
iPod classic
iPod nano (7th generation)
iPod nano (6th generation)
iPod nano (5th generation)
iPod nano (4th generation)

iPhone 5 
iPhone 4S 
iPhone 4 
iPhone 3GS
iPad (4th generation) 
iPad mini 
iPad (3rd generation) 
iPad 2
iPad
iPod touch (5th generation) 
iPod touch (4th generation) 
iPod touch (3rd generation) 
iPod nano (7th generation)

Design and specifications are subject to change without notice.

BLUETOOTH wireless technology is a short-range wireless technology that 
enables wireless data communication between digital devices, such as a 
computer and digital camera. BLUETOOTH wireless technology operates within a 
range of about 10 m (30 ft).
Connecting two devices as necessary is common, but some devices can be 
connected to multiple devices at the same time.
You do not need to use a cable for connection, nor is it necessary for the devices 
to face one another, such is the case with infrared technology. For example, you 
can use such a device in a bag or pocket.
BLUETOOTH standard is an international standard supported by thousands of 
companies all over the world, and employed by various companies worldwide.

Profile is standardisation of the function for each BLUETOOTH device specification. 
The system supports the following BLUETOOTH version and profiles:
Communication System:
BLUETOOTH Specification version 3.0
Compatible BLUETOOTH Profiles:

ˎ

ˋ A2DP (Advanced Audio Distribution Profile): Transmitting or receiving audio 

content of high-quality.

ˎ

ˋ AVRCP (Audio Video Remote Control Profile): Controlling A/V equipment; 

pausing, stopping, or starting playback, etc.

ˎ

ˋ HSP (Headset Profile): Talking on the phone/Operating the phone.

ˎ

ˋ HFP (Hands-free Profile): Talking on the phone/Operating the phone by 

hands-free.

ˎ

ˋ SPP (Serial Port Profile): Establishing serial communication with BLUETOOTH 

device.

Use BLUETOOTH devices within 10 m (about 30 ft) (line of sight) of the system.
Maximum communication range may shorten under the following conditions.

ˎ

ˋ There is an obstacle such as a person, metal, or wall between the system and 

BLUETOOTH device.

ˎ

ˋ A wireless LAN device is in use near the system.

ˎ

ˋ A microwave oven is in use near the system.

ˎ

ˋ A device that generates electromagnetic radiation is in use near the system.

Because BLUETOOTH devices and wireless LAN (IEEE802.11b/g) use the same 
frequency, microwave interference may occur and resulting in communication 
speed deterioration, noise, or invalid connection if the system is used near a 
wireless LAN device. In such a case, perform the following.

ˎ

ˋ Use the system at least 10 m (about 30 ft) away from the wireless LAN device.

ˎ

ˋ If the system is used within 10 m (about 30 ft) of a wireless LAN device, turn 

off the wireless LAN device.

Microwaves emitting from a BLUETOOTH device may affect the operation of 
electronic medical devices. Turn off the system and other BLUETOOTH devices in 
the following locations, as it may cause an accident.

ˎ

ˋ where inflammable gas is present, in a hospital, train, airplane, or a gas 

station

ˎ

ˋ near automatic doors or a fire alarm

ˎ

ˎ To be able to use the BLUETOOTH function, the BLUETOOTH device to be 

connected requires the same profile as the system’s. 
Note also that even if the same profile exists, devices may vary in function 
depending on their specifications.

ˎ

ˎ Due to the characteristic of BLUETOOTH wireless technology, the sound played 

on the system is slightly delayed from the sound played on the BLUETOOTH 
device during talking on the telephone or listening to the music.

ˎ

ˎ This system supports security capabilities that comply with the BLUETOOTH 

standard to provide a secure connection when the BLUETOOTH wireless 
technology is used, but security may not be enough depending on the setting. 
Be careful when communicating using BLUETOOTH wireless technology.

ˎ

ˎ We do not take any responsibility for the leakage of information during 

BLUETOOTH communication.

ˎ

ˎ A device featuring the BLUETOOTH function is required to conform to the 

BLUETOOTH standard specified by Bluetooth SIG, and be authenticated. Even if 
the connected device conforms to the above mentioned BLUETOOTH standard, 
some devices may not be connected or work correctly, depending on the 
features or specifications of the device.

ˎ

ˎ Noise or sound skips may occur depending on the BLUETOOTH device 

connected with the system, the communication environment or the usage 
environment.

Check that both this system and the 
connected device are turned on.

Turn up the volume of the system and 
the connected device.

Check that the connected device is 
being played back.

Check that both plugs of the 
connecting cord (not supplied) or both 
connectors of the USB cable (not 
supplied) are firmly inserted into the 
system and the connected device.

If you are connecting a personal 
computer to the system, make sure 
the audio output setting of the 
computer is set for a BLUETOOTH 
device.

Pair this system and the BLUETOOTH 
device again.

If the connected device is monaural, 
sound will only be output from the left 
speaker.

Check that the function for the 
connected device (“BLUETOOTH,” 
“USB” or “AUDIO IN”) is activated.

Turn down the volume of the system 
and the connected device.

If the connected device has an 
equalizer function, set it to off.

Keep the system away from a 
microwave oven, wireless LAN, etc.

Bring this system and the BLUETOOTH 
device closer together. Remove any 
obstacle between this system and the 
BLUETOOTH device.

Keep the system away from a TV.

Switch the BLUETOOTH connection to 
A2DP by operating the BLUETOOTH 
device when HFP or HSP is set.

If you connect a device with a built-in 
radio or tuner to this system, 
broadcasts may not be received, or 
sensitivity may be reduced. Locate the 
system farther away from the device 
and check that you can listen to the 
broadcasts satisfactorily.

Bring this system and the BLUETOOTH 
device to within 1 m (3 ft) of each 
other.

If the   (BLUETOOTH) indicator is not 
flashing quickly, press and hold 

 BLUETOOTH   PAIRING on the 

system until beeps are heard.

Check that both this system and the 
connected device are turned on.

Check that output of the BLUETOOTH 
mobile phone is set for the system.

Select HFP or HSP BLUETOOTH 
connection by operating the 
BLUETOOTH device.

Turn up the volume of the system and 
the connected device.

Keep the smartphone close to the 
system until the smartphone 
responds. If you fail, move the 
smartphone slightly on the N marked 
part of the system.

Check that the NFC function of the 
smartphone is set to on.

Check that the “NFC Easy Connect” 
app is displayed on the smartphone.

If the smartphone is in a case, remove 
it.

NFC receiving sensitivity depends on 
the device. If you fail to connect with a 
smartphone by One touch several 
times, connect to the system by 
on-screen operation.

Check that the alarm indication “

” or 

“

” is properly displayed.

Check that the device set for the alarm 
is connected to the system.

When the clock flashes “AM 12:00” or 
“0:00” due to a power interruption, 
replace the battery with a new one.

If the clock does not employ the 
daylight saving time (summer time) 
automatically, press and hold 

OFF and 

DISPLAY/ENTER until “ ” and “On” 
light up in the display.