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3-229-657-13 (1)

Radio
Cassette Player

Sony Corporation ©2001  Printed in Malaysia

WM-FS422ST/FS421/FS221

Operating instructions
Manual de instrucciones 

(inverso)

English

For the customers in the U.S.A.
OWNER’S RECORD

The model number is located at the rear and the serial number is
located inside the cassette holder. Record these numbers in the
spaces provided below. Refer to these numbers whenever you
call upon your Sony dealer regarding this product.
Model No. _________________   Serial  No.___________________

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.

This device complies with Part 15 of the FCC Rules.  Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.

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

If you have any questions about this product, you may call:
Sony Direct Response Center 1-(800)-222-7669

or write to:
Sony Direct Response Center 12451 Gateway Blvd. Fort Myers,
FL 33913

Declaration of Conformity

Trade Name:

SONY

Model No.:

WM-FS421/FS221

Responsible Party: Sony Electronics Inc.
Address:

680 Kinderkamack Road, Oradell,
NJ 07649 USA

Telephone No.:

201-930-6972

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.

Preparations

To use the carrying belt 

A

Ajust it as illustrated.

To insert batteries 

B

1

Open the cassette holder.

2

Release the catch to open the battery
compartment lid and insert two size AA
(R6) dry batteries with correct polarity.

Battery life (approximate hours)

(JEITA*)

Tape

Radio

playback

reception

Sony alkaline LR6 (SG)**

32

40

Sony R6P (SR)

9

14

* Measured value by the standard of JEITA (Japan

Electronics and Information Technology Industries
Association). (Using a Sony HF series cassette tape)

**When using Sony LR6 (SG) “STAMINA” alkaline dry

batteries (produced in Japan).

Note

• The battery life may be shorter depending on the

operating condition, the surrounding temperature and
battery type.

When to replace the batteries 

C

Replace the batteries with the new ones when “

flashes in the display.

To replace the batteries

1

Release the catch to open the battery
compartment lid.

2

Push the 

#

 side of the battery to remove the

batteries and replace them with new ones.

Playing a Tape

1

Open the cassette holder and insert a
cassette.

2

Press MENU repeatedly to set the cursor to
TAPE in the display. Then press SET to
select the tape type.
No message: normal (TYPE I)
METAL: High-position (TYPE II) or metal
(TYPE IV). 

D

3

Press 

N

.

Adjust the volume with VOLUME.

To

Press

Stop playback*

x

Wind rapidly**

M

 or 

m

* Playback will switch automatically to the opposite side

when the tape reaches the end of the side (FS422ST/
FS421 only).

**If you leave the Walkman after the tape has been

wound or rewound, the batteries will be consumed
rapidly. Be sure to press 

x

.

Note

• Do not open the cassette holder while the tape is

running.

To select the tape direction

Switch 

Y

 to select the desired direction.

Listening to the Radio

1

If the HOLD function is on, turn the HOLD
switch in the opposite direction of the arrow
to unlock the controls.
Make sure that the tape has stopped
completely.

2

Press TV, WB (Weather), FM or AM to select
the desired band and to turn on the radio.

3

Press /– to tune in to the desired
station. Hold down /– for a few
seconds to scan for stations.

To turn off the radio

Press OFF.

To improve the broadcast reception

For TV/WB/FM: 

Extend the headphones/

earphones cord (antenna). If the reception is still
not good, press MENU repeatedly to set the cursor
in the display to FM MODE. Then press SET to
switch between “LOCAL” and none (DX) for best
reception. 

D

For AM: 

Reorient the unit itself.

Presetting Radio Stations

You can preset up to 40 radio stations, 7 for TV, 4 for
WB, 24 for FM and 5 for AM, .

Presetting Automatically Scanned
Stations

1

Press TV, WB (Weather), FM or AM.

2

Press ENTER for more than 3 seconds.
Preset number 1 will flash in the display
and the Walkman starts scanning the
stations from the lower frequencies and
stops for about 3 seconds when a station is
received.

3

If you wish to preset the received station,
press ENTER while the preset number is
flashing.
The received station is preset on preset
number 1 and the unit starts scanning for
the next receivable station.

4

Repeat Step 3 until all receivable stations are
preset.

To stop scanning

Press OFF. The radio is turned off at the same time.

Notes

• If stations are already stored, the newly preset stations

replace the old ones when the above procedure is
completed.

• If stations cannot be preset automatically, preset

stations manually.

Presetting Stations Manually

1

Press TV, WB (Weather), FM or AM.

2

Press ENTER.
The frequency digits and a preset number
flash in the display.

3

While the frequency digits and the preset
number are flashing, tune in to a station you
wish to store using /–, and select
a preset number using /–.

4

While the frequency digits and the preset
number are flashing, press ENTER.

Notes

• If you cannot complete step 3 or 4 while the

indications are flashing, repeat from step 2.

• If a station is already stored, the new station replaces

the old one.

To cancel the stored station

Follow the procedure above and in step 3, press and
hold /– until “- - - -” is displayed and
select the preset number you want to cancel using
/–. Press ENTER while “- - - -” is flashing.

Playing the preset radio stations

1

Press TV, WB (Weather), FM or AM.

2

Press /–.

WALKMAN is a registered trademark of Sony Corporation.
WALKMAN es marca registrada de Sony Corporation.

1

2

3

2

1

2

1

A

Using Other Functions

Locking the controls

Turn the HOLD switch to the direction of the arrow
to lock the controls.
The hold function only locks the radio operation
buttons, MENU button and SET button.

Emphasizing bass sound 

D

Press MENU repeatedly to set the cursor to MB in
the display. Then, press SET to turn MB (mega bass)
on. With each press, the indications change as
follows.
MB (mega bass) : emphasizes bass sound
No message: off (normal)

Notes

• If the sound is distorted with the mode “MB”, turn

down the volume or select normal mode.

• Bass emphasis may not show great effect if the volume

is turned up too high.

Protecting Your Hearing — AVLS
(Automatic Volume Limiter System)

D

Press MENU repeatedly to set the cursor to AVLS in
the display. Then press SET to show “AVLS”.
The maximum volume is kept down to protect your
ears.

Precautions

On batteries

• Do not carry dry batteries with coins or other metallic objects.

It can generate heat if the positive and negative terminals of the
batteries are accidentally contacted by a metallic object.

• When you are not going to use the Walkman for a long time,

remove the battery to avoid any damage caused by battery
leakage and subsequent corrosion.

On handling

• Do not leave the unit in a location near heat sources, or in a

place subject to direct sunlight, excessive dust or sand,
moisture, rain, mechanical shock, or in a car with its windows
closed.

• Do not use cassettes longer than 90 minutes except for long

continuous playback.

• The LCD display may become hard to see or slow down when

using the unit at high temperatures (above 40°C/104°F) or at
low temperatures (below 0°C/32°F). At room temperature, the
display will return to its normal operating condition.

• If the unit has not been used for a long time, set it in the

playback mode to warm it up for a few minutes before you
start using again.

On water resistance

• Before opening or closing the cassette holder, be sure to wipe

off water, dust or sand on the exterior of the Walkman. (The
Walkman is not water-resistant with the cassette holder open.)

• Since water in the headphones/earphones jack may cause rust,

cover it with the attached rubber cap when the headphones/
earphones are not in use.

• Since the Walkman is airtight, you may not be able to open the

cassette holder because of sudden change in air pressure inside
the Walkman, which happens after being transported on a
plane or moving from a warm place to a cold place. To open the
cassette holder see “Troubleshooting”.

• The supplied headphones/earphones are not meant to be

immersed in water or come in continuous contact with water. If
they are accidentally dropped into water or get wet, dry them
with a soft cloth. Never use an electric hair dryer.

• If the Walkman or the headphones/earphones are immersed in

salt water, be sure to wash them in non-running fresh water.
Never wash them under running water, and never use soap or
detergent.

• Any sand or dust on the rubber packing will prevent the

cassette holder from closing tightly, and water may leak in.
Brush off the dust once in a while.

• We recommend the packing to be changed every year.

Replacement packing is available at an authorized Sony Service
Facility.

B

C

HOLD

OFF

N

M

TV, WB, FM, AM

/–

m

x

Display

VOLUME

, –

On headphones/earphones

Road safety

Do not use headphones/earphones while driving, cycling, or
operating any motorized vehicle. It may create a traffic hazard
and is illegal in some areas. It can also be potentially dangerous
to play your headphones/earphones at high volume while
walking, especially at pedestrian crossings.
You should exercise extreme caution or discontinue use in
potentially hazardous situations.

Preventing hearing damage

Do not use headphones/earphones at high volume. Hearing
experts advise against continuous, loud and extended play. If you
experience a ringing in your ears, reduce volume or discontinue
use.

Caring for others

Keep the volume to a moderate level. This will allow you to hear
outside sounds and to be considerate to the people around you.

On maintenance

• To clean the tape head and path, Use the cleaning cassette

CHK-1W/C-1KW (not supplied) every 10 hours of use.
Use only the recommended cleaning cassette.

• To clean the exterior, use a soft cloth slightly moistened in

water. Do not use alcohol, benzine or thinner.

• Clean the headphones/earphones plugs periodically.

Troubleshooting

The display shows incorrect information.

• The batteries are weak. Replace the batteries with new ones.

The display and the operation are not normal.

• Remove the batteries for 30 seconds or more, and then insert

them again. If this does not solve the problem, remove the
batteries and leave the unit without batteries for 30 minutes or
more, and then insert them again. In this case, preset the
stations again, since the preset stations are erased from the
memory.

The cassette holder cannot be opened.

• Open the rubber cap, then open the cassette holder. When the

cassette holder opens, remember to close the rubber cap to
prevent intrusion of water.

The sound is distorted.

• Set the 

switch firmly to the correct position (FS422ST/

FS421 only).

Specifications

• Frequency range

TV: 2 - 13 ch
WB (Weather): 1 - 7 ch
FM: 87.5 - 108 MHz
AM: 530 - 1 710 kHz (North, Central and South America)

531 - 1 602 kHz (Other countries)

• Power requirements

3 V DC  batteries size AA (R6) 

×

 2

• Dimensions (w/h/d)

Approx. 107.3 

×

 123.3 

×

 51.5 mm (4 

1

4

 

×

 4 

7

8

 

×

 2 

1

8

 inches),

excluding projecting parts and controls

• Mass

Approx. 282 g (10.0 oz) (main unit only)

• Supplied accessories

Stereo headphones or earphones (1)
Belt clip (1)

Design and specifications are subject to change without notice.

Rubber cap

Air outlet

The C-Tick mark on the Walkman is valid
only for the products marketed in Australia.

La marca C-Tick del Walkman es válida
solamente para los productos
comercializados en Australia.

i

(FS422ST/FS421 only)

MENU

SET

ENTER

MB

TAPE AVLS FM MODE

D

MENU

SET

ENTER

2

1

FS422ST/FS421

This warranty is valid only in the United States.
Esta garantía es válida solamente en los EE. UU.

 

 

 

 

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