Sony ICFCS20BT Manual

Before operating the system, please read this guide thoroughly and retain it for 
future reference.

The model number and the serial number are located on the bottom.
Record the serial number in the space provided below. Refer to them whenever 
you call upon your Sony dealer regarding this product.

Model No. ICF-CS20BT

Serial No.                    

This product contains a coin/button cell battery. If the coin/button cell battery is 
swallowed, it can cause severe internal burns in just 2 hours and can lead to 
death.
Keep new and used batteries away from children. If the battery compartment 
does not close securely, stop using the product and keep it away from children.
If you think batteries might have been swallowed or placed inside any part of the 
body, seek immediate medical attention.

This graphical symbol is located on the bottom of the unit.

Please register this product on line at http://www.sony.com/
productregistration.

Please register this product online at http://productregistration.sony.ca.
Proper registration will enable us to send you periodic updates 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.

To reduce the risk of fire or electric shock, do not expose this apparatus to 
dripping or splashing, and do not place objects filled with liquids, such as vases, 
on the apparatus.

Do not install the appliance in a confined space, such as a bookcase or built-in 
cabinet.

As the main plug is used to disconnect the unit from the mains, connect the 
system to an easily accessible AC outlet. Should you notice an abnormality in the 
system, disconnect the main plug from the AC outlet immediately.

The system is not disconnected from the AC power source (mains) as long as it is 
connected to the wall outlet, even if the system itself has been turned off.

Battery may explode if mistreated. Do not recharge, disassemble or dispose of in 
fire.

The BLUETOOTH® word mark and logos are owned by the Bluetooth SIG, Inc. and 
any use of such marks by Sony Corporation is under license.
The N Mark is a trademark or registered trademark of NFC Forum, Inc. in the 
United States and in other countries.
Android and Google Play are trademarks of Google Inc.
iPad, iPhone, iPod, iPod classic, iPod nano, iPod touch and Mac are trademarks of 
Apple Inc. registered in the U.S. and other countries.
Lightning is a trademark of Apple Inc.
“Made for iPod,” and “Made for iPhone” mean that an electronic accessory has 
been designed to connect specifically to iPod or iPhone, respectively, and has 
been certified by the developer to meet Apple performance standards. Apple is 
not responsible for the operation of this device or its compliance with safety and 
regulatory standards. Please note that the use of this accessory with iPod or 
iPhone may affect wireless performance.
No Power No Problem is a trademark of Sony Corporation.
Auto Time Set is a trademark of Sony Corporation.
Other trademarks and trade names are those of their respective owners.

ˎ

ˎ This system is not specified for use with an iPad via USB connection, and 

malfunction may result if used with one.

ˎ

ˎ In the Operating Instructions, “iPod” is used as a general reference to functions 

on an iPhone, iPad or iPod, unless otherwise specified by the text or 
illustrations.

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

Danger of explosion if battery is incorrectly replaced. Replace only with the same 
or equivalent type.

To reduce the risk of fire or electric shock, do not expose this apparatus to rain or 
moisture.

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:

ˎ

ˋ Reorient or relocate the receiving antenna.

ˎ

ˋ Increase the separation between the equipment and receiver.

ˎ

ˋ Connect the equipment into an outlet on a circuit different from that to which 

the receiver is connected.

ˎ

ˋ Consult the dealer or an experienced radio/TV technician for help.

This equipment must not be co-located or operated in conjunction with any other 
antenna or transmitter.

The following FCC/IC statement applies only to the version of this model 
manufactured for sale in the U.S.A. and Canada. Other versions may not comply 
with FCC/IC technical regulations.
This equipment complies with FCC/IC radiation exposure limits set forth for an 
uncontrolled environment and meets the FCC radio frequency (RF) Exposure 
Guidelines in Supplement C to OET65 and RSS-102 of the IC radio frequency (RF) 
Exposure rules. This equipment has very low levels of RF energy that it deemed to 
comply without maximum permissive exposure evaluation (MPE). But it is 
desirable that it should be installed and operated keeping the radiator at least 20 
cm or more away from person’s body (excluding extremities: hands, wrists, feet 
and ankles).

This device complies with Industry Canada licence-exempt RSS standard(s). 
Operation is subject to the following two conditions: (1) this device may not cause 
interference, and (2) this device must accept any interference, including 
interference that may cause undesired operation of the device.

1)  Read these instructions.
2)  Keep these instructions.
3)  Heed all warnings.
4)  Follow all instructions.
5)  Do not use this apparatus near water.
6)  Clean only with dry cloth.
7)  Do not block any ventilation openings. 

Install in accordance with the manufacturer’s instructions.

8)  Do not install near any heat sources such as radiators, heat registers, stoves, 

or other apparatus (including amplifiers) that produce heat.

9)  Do not defeat the safety purpose of the polarized or grounding-type plug. A 

polarized plug has two blades with one wider than the other. A grounding 
type plug has two blades and a third grounding prong. The wide blade or the 
third prong are provided for your safety. If the provided plug does not fit into 
your outlet, consult an electrician for replacement of the obsolete outlet.

10) Protect the power cord from being walked on or pinched particularly at plugs, 

convenience receptacles, and the point where they exit from the apparatus.

11)  Only use attachments/accessories specified by the manufacturer.
12)  Use only with the cart, stand, tripod, bracket, or table specified by the 

manufacturer, or sold with the apparatus. When a cart is used, use caution 
when moving the cart/apparatus combination to avoid injury from tip-over.

13)  Unplug this apparatus during lightning storms or when unused for long 

periods of time.

14) Refer all servicing to qualified service personnel. Servicing is required when 

the apparatus has been damaged in any way, such as power-supply cord or 
plug is damaged, liquid has been spilled or objects have fallen into the 
apparatus, the apparatus has been exposed to rain or moisture, does not 
operate normally, or has been dropped.

Perchlorate Material –special handling may apply, see 
www.dtsc.ca.gov/hazardouswaste/perchlorate

ˎ

ˎ For details on operation of your mobile phone when receiving a telephone call 

while transmitting the sound using the BLUETOOTH connection, refer to the 
operating instructions supplied with the mobile phone.

The nameplate indicating Sony trademark, model number and electrical rating is 
located on the bottom exterior of this system.

ˎ

ˎ Plug the AC plug into a nearby wall outlet (mains). In the case of a problem, 

unplug it from the wall outlet (mains) immediately.

ˎ

ˎ Do not twist or place heavy objects on the AC plug cord.

ˎ

ˎ To disconnect AC power, grasp the plug itself, not the cord.

ˎ

ˎ Do not set the speaker in an inclined position.

ˎ

ˎ Do not leave the system in a location near heat sources, or in a place subject to 

direct sunlight, excessive dust, moisture, rain or mechanical shock.

ˎ

ˎ Do not expose the battery to excessive heat such as direct sunlight, fire or the 

like.

ˎ

ˎ Do not insert any small objects, etc., into the jacks. The system may short out or 

malfunction.

ˎ

ˎ Do not use alcohol, benzine, or thinner to clean the cabinet.

ˎ

ˎ If you have any questions or problems concerning this system that are not 

covered in this manual, please consult your nearest Sony dealer.

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 Caution Marking is put on the Bottom Enclosure.

ˎ

Ô Getting Started

Plug the AC plug into a wall outlet firmly.

This system contains a CR2032 battery as a backup power source to keep the 
clock and the alarm operating during a power interruption. (No Power No 
Problem system)

When the battery becomes weak, “

” lights up in the display.

If a power interruption occurs while the battery is weak, the current time and 
alarm will be erased.
Replace the battery with a Sony CR2032 lithium battery. Use of another battery 
may cause a fire or explosion.
To replace the battery, see “Replacing the Battery” for details.
Note

ˎ

ˎ If “AM 12:00” flashes in the display when the system is connected to an AC outlet for the first 

time, the battery may be weak. In this case, consult your nearest Sony dealer.

Right side of the system

This system is preset to the current EST (Eastern Standard Time) at the factory, 
and is powered by a backup battery. All you need to do the first time is just plug it 
in and select your time zone.

Plug in the system.

The current EST (Eastern Standard Time) lights up in the display.

Press and hold 

 

 and 

 

 until area number “2” 

begins to flash in the display.

Press 

 

 to select the number as 

follows:

0

Newfoundland Standard Time

1

Atlantic Standard Time

2 (default setting)

Eastern Standard Time

3

Central Standard Time

4

Mountain Standard Time

5

Pacific Standard Time

6

Alaska Standard Time

7

Hawaii Standard Time

Press 

 

 to confirm.

ˎ

ˎ To cancel the time zone setting, press OFF  instead of DISPLAY/ENTER  in step 4.

ˎ

ˎ Though the clock is correctly set at the factory, discrepancies may arise during transport or 

storage. If necessary, set the clock to the correct time by referring to “Setting the clock 
manually.”

This system automatically adjusts for daylight saving time (summer time).
“ ” lights up from the beginning of daylight saving time (summer time) and turns 
off at the end of the daylight saving time (summer time) automatically.

ˎ

ˎ Daylight saving time (summer time) begins at: 2:00 AM on the second Sunday 

of March.

ˎ

ˎ Standard time begins at: 2:00 AM on the first Sunday of November.

The Auto DST/summer time adjustment can be canceled.
While the clock is displayed, press and hold 

OFF 

 and DISPLAY/ENTER  until 

“ ” and “OFF” light up in the display. Auto DST/summer time adjustment has 
been canceled, then the display returns to the clock.
To activate Auto DST/summer time adjustment again, press and hold 

OFF 

 and 

DISPLAY/ENTER 

 until “ ” and “On” light up in the display.

ˎ

ˎ Changes to Auto DST/summer time adjustment by the system (see above) are subject to 

circumstances and laws in each country/region. Should this interfere with desired 
adjustment, cancel the Auto DST/summer time adjustment and set the DST display manually 
as necessary. Customers living in a country/region that does not use daylight saving time 
(summer time) must cancel Auto DST/summer time adjustment before using the system.

ˎ

ˎ When Hawaii Standard Time is set, Auto DST/summer time adjustment defaults to off. You 

can turn it on by the above operation.

To change the clock setting manually, operate the system as follows.

Plug in the system.

Press and hold 

 

 until the year digits begin to flash 

in the display.

Press 

 

 to select the year, and then 

press 

 

 to confirm.

Press and hold 

ALARM TIME SET +/– 

 to change the year digits quickly.

Once you confirm the setting by pressing 

CLOCK 

, the month digits begin 

to flash.

Repeat step 3 to set the month, day, hour and minute.

The seconds start incrementing from zero.

ˎ

ˎ If you do not press any button for about 1 minute while setting the clock, the clock setting will 

be canceled.

ˎ

ˎ A 100-year calendar (2013 - 2112) is installed in the system. When the date is set, the day of 

the week is automatically displayed. 
MON = Monday, TUE = Tuesday, WED = Wednesday,  
THU = Thursday, FRI = Friday, SAT = Saturday, SUN = Sunday

You can choose the displayed time format between the 12-hour system (default) 
or the 24-hour system.
Press and hold 

OFF 

 and SNOOZE/BRIGHTNESS  for about 2 seconds.

The time format toggles between the 12-hour system (“AM 12:00” = midnight) and 
the 24-hour system (“0:00” = midnight).

While the clock is displayed, press 

CLOCK 

 once to display the month and date, 

and press again to display the year. To return to the current time display, press 
CLOCK 

 once again; or after a few seconds the display will return automatically.

The shape and length of the antenna is designed to receive AM signals. Do not 
dismantle or roll up the antenna.

Raise the plastic stand and fit the antenna into the slot of 
the stand.

Press the antenna into the 
stand until it clicks.

Plastic stand

Insert the AM antenna connector in the 

 jack 

on the rear of the system.

Push and hold down the tab of the antenna terminal clamp, and remove the AM 
loop antenna.

You can enjoy music and hands-free calling with the system wirelessly by using 
your device’s BLUETOOTH function.
Choose one of the following three connection methods, best suited for the 
BLUETOOTH device. For details on how to operate your device, refer to the 
operating instructions supplied with the device.

BLUETOOTH devices need to be “paired” with each other beforehand.

To listen to music with a BLUETOOTH device that has been paired, see this 
pattern.

Using an NFC compatible smartphone, you can establish BLUETOOTH connection 
by just touching the system with it.
For details about NFC, see “About NFC” in  Pattern C .

Check the following before operating the system.

ˎ

ˎ Both the system and the device are placed within 1 m (3 ft) of each other.

ˎ

ˎ The system is connected to a power source.

ˎ

ˎ The operating instructions supplied with the device are kept at hand.

Set the BLUETOOTH function of the BLUETOOTH device to 
on.

For details, refer to the operating instructions supplied with the device.

Press and hold   

   

 

 on the system 

until beeps are heard and “  (BLUETOOTH)” begins to flash 
quickly in the display.

ˎ

ˎ From the factory, pairing information is not stored in the system. In this case, if you only 

press   

BLUETOOTH   PAIRING 

, “  (BLUETOOTH)” starts flashing quickly in the 

display.

 (BLUETOOTH) 

flashes quickly

Perform the pairing procedure on the BLUETOOTH device to 
detect the system.

If “SONY: ICF-CS20BT” does not appear on the device’s display, repeat from 
step 1.
Note

ˎ

ˎ Some devices cannot display a list of detected devices.

Select “SONY: ICF-CS20BT” shown in the display of the 
BLUETOOTH device.

If Passcode* input is required on the display of the 
BLUETOOTH device, input “0000.”

The BLUETOOTH connection is established and “  (BLUETOOTH)” in the display 
stays on.
*  Passcode may be called “Passkey,” “PIN code,” “PIN number,” or “Password.”

ˎ

ˎ To pair with other BLUETOOTH devices, repeat steps 1 to 5 for each device.
Notes

ˎ

ˎ Pairing mode of the system is canceled after about 5 minutes, and “  (BLUETOOTH)” in the 

display flashes slowly. If the pairing mode is canceled while performing this procedure, start 
over from step 2.

ˎ

ˎ Passcode of the system is fixed as “0000.” The system cannot be paired with a BLUETOOTH 

device whose Passcode is not “0000.”

ˎ

ˎ Once BLUETOOTH devices are paired, there is no need to pair those devices again. However, 

in the following cases, you will need to perform the pairing procedure again.

ˎ

ˋPairing information is deleted after repair, etc.

ˎ

ˋThe system is paired with 5 or more devices. 

The system can be paired with up to 4 BLUETOOTH devices. If a new device is paired after 4 
devices have been paired, the device whose latest connection time is the oldest among the 
4 paired devices is replaced by the new one.

ˎ

ˎ More than one device can be paired with the system, but sound will be heard from just one 

of those devices.

Set the BLUETOOTH function of the BLUETOOTH device to 
on.

ˎ

ˎ When   BLUETOOTH  is pressed, the system tries to establish BLUETOOTH connection 

with the BLUETOOTH device connected to the system last time. The BLUETOOTH 
connection is established and “  (BLUETOOTH)” in the display stays on.

ˎ

ˎ When “  (BLUETOOTH)” lights up in the display, the system is connected to a BLUETOOTH 

device. When you want to connect another BLUETOOTH device, terminate the current 
BLUETOOTH connection first by operating the connected BLUETOOTH device.

Select “SONY: ICF-CS20BT” shown in the display of the 
BLUETOOTH device.

If necessary, select a BLUETOOTH profile that the system supports from the 
following: A2DP, HSP or HFP. For details on each profile, see “Listening to 
Music by BLUETOOTH Connection with a Smartphone, etc.” or “Using 
Hands-free Calling While Listening to Music.”
Note

ˎ

ˎ This step may not be necessary for some devices.

The BLUETOOTH connection is established and “  (BLUETOOTH)” in the display 
stays on.

By just touching the system with an NFC compatible smartphone, the system 
pairs and connects with the smartphone. (After making the BLUETOOTH 
connection, the system switches to the BLUETOOTH function automatically.)

ˎ

ˎ Smartphones with the NFC function built-in 

(OS: Android 2.3.3 or later, excluding Android 3.x) 
Customers in the U.S.A. 
Access the following Web site for details: 
http://esupport.sony.com/US 
Customers in Canada 
Access the following Web site for details: 
http://esupport.sony.com/CA

NFC (Near Field Communication) is a technology enabling short-range wireless 
communication between various devices, such as mobile phones and IC tags. 
Thanks to the NFC function, data communication can be achieved easily just by 
touching the relevant symbol or designated location on NFC compatible devices.

Set the NFC function of the smartphone to on.

For details, refer to the operating instructions supplied with the smartphone.

ˎ

ˎ If your smartphone OS is Android 2.3.3 or later, and less than Android 4.1: 

proceed to step 2.

ˎ

ˎ If your smartphone OS is Android 4.1 or later: proceed to step 4.

Download and install the app “NFC Easy Connect” on the 
smartphone.

“NFC Easy Connect” is an original app by Sony for Android phones, and is 
available at Google Play Store. 
Search for “NFC Easy Connect” or scan the following two-dimensional code to 
download and install the free app. Communication fees are required to 
download the app.
The App may not be available in some countries and/or regions.
Tip

ˎ

ˎ For some smartphones, One-touch connection may be available without downloading 

the app “NFC Easy Connect.” In that case, the operation and specifications may be 
different from the description here. For details, refer to the operating instructions 
supplied with the smartphone.

By the two-dimensional code:
Use a two-dimensional code reader app.

Start the app “NFC Easy Connect” on the smartphone.

Make sure that the application screen is displayed.

Touch the system with the smartphone.

Keep touching the smartphone on the N marked part of the system until the 
smartphone responds.
Note

ˎ

ˎ If the screen of your smartphone is locked, the smartphone will not function. In this case, 

release the lock, then touch the smartphone on the N marked part again.

Smartphone responds (system recognized) 

 (BLUETOOTH) lights up

Follow the on-screen instructions to establish the connection.
The BLUETOOTH connection is established and “  (BLUETOOTH)” in the display 
stays on.
Tips

ˎ

ˎ If it is difficult to establish the connection, try the following.

ˎ

ˋActivate the app “NFC Easy Connect” and move the smartphone slightly on the N 

marked part of the system.
ˎ

ˋIf the smartphone is in a case, remove it.

ˎ

ˎ Touch the system with the smartphone again to disconnect.

ˎ

ˎ If you have multiple NFC compatible devices, just touch the smartphone to a different 

device to switch the connection to that device. For example, when your smartphone is 
connected with NFC compatible headphones, just touch the smartphone to the system to 
change the BLUETOOTH connection to the system.

BLUETOOTH function

“BLUETOOTH” lights up

Pairing with a device

“  (BLUETOOTH)” flashes quickly

Searching for a device

“  (BLUETOOTH)” flashes

Connected to a device

“  (BLUETOOTH)” lights up

ˎ

Ô Listening to Music

You can enjoy listening to music and basic remote control operation of a 
BLUETOOTH device via BLUETOOTH connection. The BLUETOOTH device is 
required to support the following BLUETOOTH profiles.

ˎ

ˎ A2DP (Advanced Audio Distribution Profile): enables you to enjoy high-quality 

audio content wirelessly.

ˎ

ˎ AVRCP (Audio Video Remote Control Profile): enables you to enjoy basic remote 

control operation (play, stop, etc.) of a BLUETOOTH device.

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

Make the BLUETOOTH connection between the system and 
the device.

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 device, then adjust the 
volume.

Set the volume of the BLUETOOTH device to a moderate level, and press 
VOLUME –/+ 

 on the system.

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).

You can operate a BLUETOOTH device that supports AVRCP. Available functions 
may vary depending on the BLUETOOTH device. Refer to the operating 
instructions supplied with the BLUETOOTH device.

 (play/pause) 

Press once to pause/resume playback.

/ (forward/
rewind) 



Press once to skip to the next/previous track. 

VOLUME –/+ 



Press to adjust the volume.

You can enjoy listening to music and play back an iPhone/iPod connected to the 
system via USB.
Update your device to the latest software version before use.

USB cable*  
(not supplied)

 (USB) port on the rear of the system

*  USB cable: Use the Lightning to USB Cable or Dock Connector 

to USB Cable supplied with your iPhone/iPod.

Connect the iPhone/iPod to the 

 (USB) port on the rear of 

the system.

Press 

 

 to select “USB.”

Press 

FUNCTION 

 repeatedly until “USB” lights up in the display.

Start playback on the connected iPhone/iPod, then adjust 
the volume.

Set the volume of the connected iPhone/iPod to a moderate level, and press 
the 

VOLUME –/+ 

 on the system.

ˎ

ˎ When a USB device other than an iPhone/iPod is connected to the system, only charging 

begins automatically.

ˎ

ˎ Do not connect the multiple devices to the  (USB) port of the system.

Press 

FUNCTION 

 or OFF  to deactivate the USB function.

 (play/pause) 

Press once to pause/resume playback.

/ (forward/
rewind) 



ˎ

ˎ Press once to skip to the next/previous track. 

ˎ

ˎ Press and hold to fast-forward/fast-rewind.

VOLUME –/+ 



Press to adjust the volume.

You can enjoy sound from the external device, such as a portable digital music 
player, through the speaker of this system. Be sure to turn off the power of the 
device before making any connections.

AUDIO IN jack (stereo mini jack) 
on the rear of the system

Connecting cord 
(not supplied)

Connect the device to the 

 jack on the rear of the 

system.

Press 

 

 to select “AUDIO IN.”

Press 

FUNCTION 

 repeatedly until “AUDIO IN” lights up in the display.

Start playback on the connected device, then adjust the 
volume.

Set the volume of the connected device to a moderate level, and press the 
VOLUME –/+ 

 on the system.

Press 

FUNCTION 

 or OFF  to deactivate the AUDIO IN function. To stop 

playback on the connected device, operate the connected device.

ˎ

ˎ The necessary type of cable or connecting cord depends on the device. Be sure to use the 

correct type of cable or cord.

ˎ

ˎ When you watching TV or listening to the radio with a device connected to the system, the 

reception may be poor.

ˎ

ˎ When you listen to the radio with a device connected, turn off the connected device to 

prevent noise. If noise occurs, even when the device is turned off, disconnect and place the 
device away from the system.

ˎ

ˎ You can use hands-free calling while the cable or connecting cord is used with this system.

FM wire 
antenna

Rear of the system

Right side of the system

You can preset receivable radio stations in your area automatically by auto preset 
tuning. You can preset up to 20 FM stations and 10 AM stations.

Press 

 

 to select “FM” or “AM.”

Press 

FUNCTION 

 repeatedly until “FM” or “AM” lights up in the display.

Press and hold 

   

 

 until “AP” 

begins to flash in the display.

Press 

 

.

Receivable radio stations will be preset automatically in order of frequency.

ˎ

ˎ To cancel auto preset tuning, press OFF .

You can listen to the radio simply by selecting a preset number. Although radio 
frequencies are preset at the factory, we recommend you to preset receivable 
radio stations in your area by auto preset tuning.

Press 

 

 to select “FM” or “AM.”

Press 

FUNCTION 

 repeatedly until “FM” or “AM” lights up in the display.

Press 

 

 to select “PRESET.”

Press 

 

 to select the preset number for the 

desired radio station.

Press 

 

 to adjust the volume.

Press 

DISPLAY/ENTER 

 once to display the preset number, and press again to 

display the frequency of the current station. To return to the clock display, press 
DISPLAY/ENTER 

 once again; or after a few seconds the display will return 

automatically.

Press 

FUNCTION 

 or OFF  to deactivate the radio function.

ˎ

ˎ For FM radio reception, extend the FM wire antenna fully to increase reception 

sensitivity.

ˎ

ˎ For AM radio reception, connect the supplied AM loop antenna to the system. 

Rotate the antenna horizontally for optimum reception.

ˎ

ˎ If stereo FM reception is noisy, press and hold MODE  until “MONO” lights up 

in the display. You will lose the stereo effect, but noise will be reduced.

Press 

 

 to select “FM” or “AM.”

Press 

FUNCTION 

 repeatedly until “FM” or “AM” lights up in the display.

Press 

 

 to select “TUNING.”

Press and hold 

 

 until the frequency digits begin 

to change quickly in the display.

The system automatically scans the radio frequencies and stops when it finds 
a clear station (automatic tuning mode).
If you cannot tune to a station using the automatic tuning mode, press 

+/– 

 repeatedly to change the frequency step by step.

When an FM stereo broadcast is received, “ST” lights up in the display.

Press 

 

 to adjust the volume.

You can manually preset a radio station which cannot be preset automatically.

Tune to a station you want to preset.

Press and hold DISPLAY/ENTER 

 until “PRESET” begins to 

flash in the display.

Press 

 

 to select the preset number, and then 

press 

 

 to confirm.

The station is preset and assigned to the selected preset number.
Example: The following displays appear when you preset FM 89.8 MHz to 
preset number 2 for FM.

ˎ

ˎ To cancel the preset number, press OFF  instead of DISPLAY/ENTER  in step 3.

ˎ

ˎ Do not place the AM loop antenna near the system, power supply or other A/V equipment 

during use, as noise may result.

ˎ

ˎ Keep digital music players or mobile phones away from the AM loop antenna or the FM 

antenna, as this may lead to reception interference.

ˎ

ˎ When you are listening to radio with a BLUETOOTH device or USB device connected to the 

system, interference with radio reception may occur. In this case, terminate BLUETOOTH 
connection, or disconnect the USB device from the system.

ˎ

ˎ You can use hands-free calling while listening to the radio on this system.

Personal Audio System

Operating Instructions

ICF-CS20BT

©2013 Sony Corporation  Printed in China

4-468-397-

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