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4-474-860-

12

(1)

Personal Audio System

Operating Instructions

©2013 Sony Corporation     Printed in China

CFD-S50

Rear

The recycling of materials will help to conserve 
natural resources. For more detailed information 
about recycling of this product, please contact 
your local Civic Office, your household waste 
disposal service or the shop where you 
purchased the product.
Europe Only

  Disposal of waste batteries 

(applicable in the European 

Union and other European 

countries with separate 

collection systems)

This symbol on the battery or on the packaging 
indicates that the battery provided with this 
product shall not be treated as household waste. 
On certain batteries this symbol might be used in 
combination with a chemical symbol. The 
chemical symbols for mercury (Hg) or lead (Pb) 
are added if the battery contains more than 
0.0005% mercury or 0.004% lead. By ensuring 
these batteries are disposed of correctly, you will 
help prevent potentially negative consequences 
for the environment and human health which 
could otherwise be caused by inappropriate 
waste handling of the battery. The recycling of 
the materials will help to conserve natural 
resources.
In case of products that for safety, performance 
or data integrity reasons require a permanent 
connection with an incorporated battery, this 
battery should be replaced by qualified service 
staff only. To ensure that the battery will be 
treated properly, hand over the product at 
end-of-life to the applicable collection point for 
the recycling of electrical and electronic 
equipment.
For all other batteries, please view the section on 
how to remove the battery from the product 
safely. Hand the battery over to the applicable 
collection point for the recycling of waste 
batteries.
For more detailed information about recycling of 
this product or battery, please contact your local 
Civic Office, your household waste disposal 
service or the shop where you purchased the 
product.

Licence and Trademark Notice

 MPEG Layer-3 audio coding technology and 

patents licensed from Fraunhofer IIS and 
Thomson.

Basic Operations

Before using the unit

To turn the power on or off

Press POWER (or OPERATE) 

. You can also turn 

on the power of this unit using the direct 
power-on function (below).
In this manual, operations are mainly explained 
using the direct power-on function.

To use the direct power-on function

Press CD 

, TAPE 

, RADIO FM/AM 

 or AUDIO 

IN 

 while the unit is turned off. The power 

turns on with the relevant function selected.

To adjust the volume

Press or 

 

.

The volume level of this unit is adjustable in 
steps from 0 to 31.

To listen through headphones

Connect headphones to the 

 (headphones) jack 

.

To reinforce the bass

Press MEGA BASS 

.

“MEGA BASS” lights up on the display.
To return to normal sound, press the button 
again.

Playing a music disc

You can play the following types of discs with 
this unit.

 Audio CDs on which CD-DA tracks are recorded 

in CD-DA disc format

 CD-R/CD-RW discs on which CD-DA tracks are 

recorded in CD-DA disc format

 CD-R/CD-RW discs on which MP3 audio files 

are recorded in ISO 9660 Level 1/Level 2 or 
Joliet

Press CD 

 to turn on the CD function.

Press PUSH OPEN/CLOSE 

 

, place a 

disc in the CD compartment and then 
close the compartment cover.

Label side up

The disc is loaded and the disc information 
appears on the display. The information 
displayed varies depending on the disc type 
(audio CD/MP3 disc).

(Example: when an audio CD is loaded)

Total playing time

(Example: when an MP3 disc is loaded)

Total 
number of 
folders

Total 
number of 
tracks

Press 

 

 to start playback.

Listening to the radio

Press RADIO FM/AM 

 repeatedly to 

select the band “FM” or “AM.”

Hold down TUNE + or 

 

 until the 

frequency digits begin to change on the 
display.

The unit automatically scans the radio 
frequencies and stops when it finds a clear 
station. When an FM stereo broadcast is 
received, “ST” lights up on the display.
If you cannot tune to a station using 
automatic tuning mode, press TUNE + or 

 

 

repeatedly to change the frequency step by 
step.

Tip

If the stereo FM reception is noisy, press MODE 

 

repeatedly until “Mono” appears on the display. You 

will lose the stereo effect, but the broadcast will 

improve.

To change the FM/AM tuning interval

(Philippines, Singapore, Malaysia and India 
models only)
The FM/AM tuning interval can be changed if 
necessary using the following procedure.

Press RADIO FM/AM 

 repeatedly to 

select a band.

Hold down MANUAL PRESET 

 until 

“FM-xx” or “AM-xx” flashes on the display.

Hold down RADIO FM/AM 

 until the 

current tuning step appears.

Press 

 or 

 

 to select the desired 

tuning step.

“FM 50K” (for 50 kHz interval) or “FM 100K” (for 
100 kHz interval) in the FM band, and “AM 9K” 
(for 9 kHz interval) or “AM 10K” (for 10 kHz 
interval) in the AM band can be selected.

Press ENTER 

.

Changing the tuning interval erases all the FM/
AM preset stations stored in the unit. Reset your 
preset stations after changing the tuning 
interval.

To improve radio reception

Reorient the antenna to improve FM reception.

Reorient the unit itself to improve AM reception.

Playing a tape

Check the following items before starting 
operation.

 Use a type I (normal) tape only. You cannot 

use any other types of tape with this 
system.

 If there is tape slack, rewind 

the slack using a pencil to 
avoid damaging the tape or 
the unit.

Press TAPE 

 to turn on the tape 

function.

Press 



 

 (

), insert a cassette tape 

into the cassette tape compartment (

and then close the compartment cover.

Press 

 

 to start playback.

Other operations
To

Do this

Stop playback

Press 



 

.

Pause playback Press 

 

. To resume 

playback, press the button 
again.

Fast-forward or 
rewind

Press 

 or 

 

.

Eject the 
cassette

Press 



 

.

Notes

  Do not turn off the power during the tape 

playback. Doing so may cause malfunction. Make 

sure to stop playback before turning off the 

power.

  After the tape is wound to the beginning or end, 

press 



 

 to release 

 or 

 

 (except for 

European models).

(Example: an audio CD)

Playing time*

1

(Example: an MP3 disc)

Playing time*

2

*

3

*

1

 Each time you press DISPLAY 

, the playback 

screen switches between showing the playing 

time and showing the current track number.

*

2

 If the playing time is longer than 100 minutes, 

“--:--” appears on the display.

*

3

 Each time you press DISPLAY 

, the playback 

screen switches between showing the playing 

time and showing the current track number 

and the number of the folder containing that 

track.

Other operations
To

Do this

Pause playback Press 

 

. To return to 

playback, press the button 
again.

Stop playback

Press 

 

. When you press 

 

 after playback is 

stopped, playback starts from 
the beginning of the track/
file you were last playing 
(Resume Play).

Cancel Resume 
Play

Press 

 

 twice. When you 

press 

 

 after you cancel 

Resume Play, playback starts 
from the beginning of the 
first track/file.

Select a folder 
on an MP3 disc

Press   + or 

 

.

Select a track/
file

Press 

 or 

 

. You can 

skip tracks/files one by one.

Find a point in a 
track/file

Hold down 

 or 

 

 

during playback, and release 
the button at the desired 
point. When locating a point 
while paused, press 

 

 to 

start playback after the 
desired point is found.

Tip

Resume Play is cancelled if you open the CD 

compartment.

Example of folder structure and 
playing order

The playing order of the folders and files is as 
follows:

Folder

MP3 file

Notes on MP3 discs

  When a disc is loaded, the unit reads all the files 

on that disc. During this time, “READ” is blinking. If 

there are many folders or non-MP3 files on the 

disc, it may take a long time for play to begin or 

for the next MP3 file to start to play.

  We recommend that non-MP3 files or unnecessary 

folders are excluded when creating MP3 discs.

  During playback, folders that contain no MP3 files 

are skipped.

  This system can only play MP3 files that have a file 

extension of “.mp3”.

  Note that even if the file name has the correct file 

extension but the actual file was created in a 

different audio format, this unit may produce 

noise or may malfunction.

  MP3 PRO format is not supported.

  This unit cannot play audio files on a disc in the 

following cases:

 

When the total number of audio files exceeds 

413.

 

When the total number of folders on a single 

disc exceeds 99.

 

When the directory level (folder depths) exceeds 

9 (including the “ROOT” folder).

To change play modes

Press MODE 

 repeatedly while the disc is 

stopped.
For details, see “Selecting play mode.

WARNING

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

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.
As the main plug is used to disconnect the unit 
from the mains, connect the unit to an easily 
accessible AC outlet. Should you notice an 
abnormality in the unit, disconnect the main plug 
from the AC outlet immediately.
The unit is not disconnected from the AC power 
source (mains) as long as it is connected to the 
wall outlet, even if the unit itself has been turned 
off.
Do not install the appliance in a confined space, 
such as a bookcase or built-in cabinet.
Excessive sound pressure from earphones and 
headphones can cause hearing loss.
Do not expose the batteries (battery pack or 
batteries installed) to excessive heat such as 
sunshine, fire or the like for a long time.
The nameplate and important information 
concerning safety are located on the bottom 
exterior.

Notice for customers: the 

following information is only 

applicable to equipment sold 

in countries applying EU 

directives

This product has been manufactured by or on 
behalf of Sony Corporation, 1-7-1 Konan 
Minato-ku Tokyo, 108-0075 Japan. Inquiries 
related to product compliance based on 
European Union legislation shall be addressed to 
the authorized representative, Sony Deutschland 
GmbH, Hedelfinger Strasse 61, 70327 Stuttgart, 
Germany. For any service or guarantee matters, 
please refer to the addresses provided in the 
separate service or guarantee documents.

  Disposal of Old Electrical & 

Electronic Equipment  

(Applicable in the European 

Union and other European 

countries with separate 

collection systems)

This symbol on the product or on its packaging 
indicates that this product shall not be treated as 
household waste. Instead it shall be handed over 
to the applicable collection point for the 
recycling of electrical and electronic equipment.
By ensuring this product is disposed of correctly, 
you will help prevent potential negative 
consequences for the environment and human 
health, which could otherwise be caused by 
inappropriate waste handling of this product.

Power Sources

Connect the AC power cord 

, or insert six R14 (size C) batteries (not supplied) into the battery 

compartment 

.

Use alkaline batteries with this unit. The use of manganese batteries 
is not recommended, since this type of battery has an extremely short 
usage time.

To a wall outlet

or

To AC IN jack

AC power cord (supplied)

Bottom

Notes

  Replace the batteries when the OPR/BATT indicator 

 dims, or when the unit becomes inoperable. Replace all 

of the batteries with new ones. Before you replace the batteries, be sure to remove any CD or tape and 

disconnect any optional component from the unit.

  To use the unit on batteries, disconnect the AC power cord from the unit and the wall outlet.

To use the power-management function (European models only)

This unit is equipped with an automatic standby function. With this function, the unit enters standby 
mode automatically after about 15 minutes if there is no operation or audio signal output. 

Notes

  The displayed content starts flashing on the display about 2 minutes before entering standby mode.

  In standby mode with the AC power cord connected, “STANDBY” appears on the display (European models 

only).

  The automatic standby function is not available with the FM/AM function.

  POWER (or OPERATE) button

  Function buttons

 

RADIO FM/AM–AUTO 
PRESET button

 

TAPE button

 

CD button

 

AUDIO IN button

 TUNE/  (folder) + button

 TUNE/  (folder) 

 button

  CD compartment cover

  Tape operation buttons

 

 (pause) button

 



 (stop/open) button

 

 (fast forward) button

 

 (rewind) button

 

 (play) button*

 

 (record) button

  PUSH OPEN/CLOSE 

 

 (go backward)/PRESET 

 button

 

 (go forward)/ 

button

 

 (play/pause)/MANUAL 

PRESET button*

 

 (stop) button

 VOLUME 

 button

 

button*

  MEGA BASS button

  DISPLAY/ENTER button

  Cassette tape compartment 

cover

  OPR/BATT indicator

  MODE button

  AC IN jack

 

 (headphones) jack

  AUDIO IN jack

*

 

 

,  

 and 

 

 

have a tactile dot.

Recording on a tape

Check the following items before starting 
operation.

 Use a type I (normal) tape only. You cannot 

use any other types of tape with this 
system.

 Make sure that the overwrite protection tab 

has not been removed. If the tab has been 
removed, cover the broken tab using 
adhesive tape.

Prepare the source you want to record.

  To record CD-DA tracks or MP3 files 

on a disc

Press CD 

 and place a disc in the CD 

compartment. Make sure not to start playback. 
See “Playing a music disc.

 To record a radio program

Press RADIO FM/AM 

 repeatedly to select a 

band and tune to the desired station. See 
“Listening to the radio.

  To record sound from a connected 

optional component

Press AUDIO IN 

 and connect an optional 

component, and then start playback.

Press 



 

 (

), insert a cassette tape 

into the cassette tape compartment (

and then close the compartment cover.

Press 

 

 to start recording (the play 

button 

 

 will depress automatically 

at the same time).

Tips

  Adjusting the volume or the audio emphasis will 

not affect the recording level.

  If the AM program makes whistling sound after 

you have press 

 

 in step 3, press MODE 

 

repeatedly to select the position of ISS 

(Interference Suppress Switch) that may decreases 

the noise.

  Use AC power as the power source for recording 

for best recording results.

Other operations
To

Do this

Stop recording

Press 



 

.

Pause 
recording

Press 

 

. To resume 

recording, press the button 
again.

To record from partway through the 

current CD-DA track or MP3 file

Press 

 

 to pause playback where you want 

to start recording, then press 

 

.

To record favorite CD-DA tracks or MP3 

files on a disc

Create a program (see “Creating your own 
program (Program Play)”), then press 

 

 to 

start recording.

To erase recorded cassette tapes

To erase a cassette tape, you need to record 
silence over the previous recording.

Press TAPE 

 to turn on the tape 

function.

Insert a recorded tape into the cassette 
tape compartment.

Press 

 

.

Erasing process starts, and previous recording 
is overwritten with silent data.

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