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WEATHER/FM Stereo/AM
PLL Synthesized Radio

©2008 Sony Corporation          Printed in China

3-249-146-

51

(1)

SRF-M37W

WEATHER/FM/AM WALKMAN

Operating Instructions

For customers who purchased this product in the USA
Please register this product on line at
http://www.sony.com/productregistration.
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.

WARNING

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

This device complies with Part 15 of the FCC Rules.
Operation is subject to the condition that this device does not cause
harmful interference.

If you have any questions about this product, you may call;
Sony Customer Information Service Center 1-800-222-7669 or
http://www.sony.com/

Declaration of Conformity

Trade Name:

SONY

Model:

SRF-M37W

Responsible Party:

Sony Electronics Inc.

Address:

16530 Via Esprillo, San Diego, CA 92127 USA

Telephone Number: 858-942-2230

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.

Before You Begin

Thank you for choosing the Sony radio!
It will give you many hours of reliable service and listening pleasure.
Before operating the radio, please read these instructions thoroughly and
retain them for future reference.

Features

• WEATHER/FM/AM 3 band PLL (phase locked loop) synthesized

radio.

• Easy Preset Digital Tuning with 20 memory presets.
• 5 direct presets calls and 1 direct weather-band button.
• Ergonomic Design for belt-holder use.

Notes on AM Channel Step

The AM channel step differs depending on areas. See “Changing AM
Channel Step”.

Precautions

• Operate the unit only on 1.5 V DC with one size AAA (R03) battery.
• Avoid exposure to temperature extremes, direct sunlight, moisture,

sand, dust or mechanical shock. Never leave the unit in a car parked
under the sun.

• Should any solid object or liquid fall into the unit, remove the battery

and have the unit checked by qualified personnel before operating it
any further.

• In vehicles or buildings, radio reception may be difficult or noisy. Try

listening near a window.

• To clean the casing, use a soft cloth dampened with a mild detergent

solution.

Notes on Headphones

Road safety

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

Preventing hearing damage

Avoid using headphones 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 at a moderate level. This will allow you to hear outside
sounds and to be considerate to people around you.

Warning

If there is lightning when you are using the unit, take off the headphones
immediately.

If you have any questions or problems concerning your unit,
please consult your nearest Sony dealer.

Troubleshooting

Should any problem persist after you have made the following checks,
consult your nearest Sony dealer.

All buttons do not operate at all.

• “

-

” is displayed. Slide the 

HOLD

  switch  so that “

-

” disappears.

Very weak or interrupted sound, or unsatisfactory reception

• Weak battery.
• In a vehicle or in a building, move closer to a window.

There is hum or noise.

• If 

WB/FM SENS

 is set to 

LOCAL

, set to 

DX

.

Noise occurs.

• Ensure that the unit is not near a mobile phone or any other device that

emits radio waves.

Display is dim, or no indication is displayed.

• Weak battery.
• The unit is being used in extremely high or low temperatures or in a

place with excessive moisture.

The station cannot be received when a PRESET TUNING (1 to 5)
button is pressed.

• You chose the wrong preset number.
• The memory of the station has been initialized. Preset the station again.

The power cannot be turned on, and “

” is flashing in the

display.

• The battery have been completely exhausted.

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

Specifications

Time display:

12-hour system

Frequency range

Band

Range

Channel step

WEATHER

1 - 7 ch

1 channel

FM

87.5 – 108 MHz

0.1 MHz

AM

530 – 1 710 kHz

10 kHz

Output

i

 (headphones) jack (ø 3.5 mm, stereo minijack)

Power output

2.8 mW + 2.8 mW (at 10 % harmonic distortion)

Power requirements

1.5 V DC, one size AAA (R03) battery

Dimensions

Approx. 83 

×

 63 

×

 32 mm (w/h/d)

(3 

3

/

8

 

×

 2 

1

/

2

 

×

 1 

5

/

16

 inches) incl. projecting parts and controls

Approx. 83 

×

 63 

×

 25 mm (w/h/d)

(3 

3

/

8

 

×

 2 

1

/

2

 

×

 1 inches) not incl. projecting parts and controls

Mass

Approx. 94 g (3.32 oz.) incl. battery and belt clip.

Accessories Supplied

Stereo headphones (1)
Belt Clip (1)

Design and specifications are subject to change without notice.

Installing the Battery

(See Fig. 

A

– )

1

Open the battery compartment lid and install one size AAA
(R03) battery (not supplied) with correct polarity.
When battery is first installed, “AM 12:00” flashes in the
display. Once the current time is set, the flashing stops.

2

Close the lid.

Battery Life 

(Approx. hours)

(JEITA*)

When using

WEATHER

FM

AM

Sony alkaline

31

34

54

size AAA (LR 03)
Sony size AAA (R03)

12

13

24

* Measured by JEITA (Japan Electronics and Information Technology

Industries Association) standards. The actual battery life may vary
depending on the circumstance of the unit.

When to replace the battery

You can check the remaining battery power that appears in the display.
The indicators are as follows:

Indicator

Full strength*

x

Weakening*

x

When the battery becomes exhausted, the unit will turn off.
Replace with new battery. When you press 

POWER

 after

installing the new battery, the indicator changes to “

”.

* Displayed only when the radio is turned on.

Note

Do not take more than 3 minutes to replace the battery, otherwise, your
clock settings and preset stations will be initialized. Should that happen,
reset the functions again.

Notes on battery

• Do not charge the dry battery.
• Do not carry the dry battery together with coins or other metallic

objects. It can generate heat if the positive and negative terminals of the
battery are accidentally come into contact with metallic objects.

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

battery to avoid damage from battery leakage and corrosion.

A

Insert the 

#

 side of

the battery first.

Size AAA (R03) x 1

“WALKMAN” is a registered trademark of Sony Corporation to represent
Headphone Stereo products. 

 is a registered trademark of Sony

Corporation.

To attach the battery compartment lid if it is
accidentally detached (See Fig. 

A

– )

The battery compartment lid is designed to come off when opened with
excessive force. To put it back on, see the illustration.

1

Insert one side of the lid as illustrated.

2

Push the other side to attach.

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