background image

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

 is a registered trademark of Sony Corporation.

Notes on battery

• Do not attempt to charge a dry battery.
• Do not carry a 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

Installing the Battery

(See Fig. 

A

)

1

Open the battery compartment lid and install one size AAA (R03)
battery (not supplied) observing correct polarity.

When a 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

FM

Sony alkaline size AAA (LR03)

30

Sony size AAA (R03)

11

* 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*

Weakening*

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

POWER 

to 

ON 

after installing the

new battery, the indicator changes to “

”.

* Displayed only when the radio is turned on.

Note

Do not take more than 30 seconds to replace the battery, otherwise, your clock
and preset stations will be initialized. Should this happen, reset the functions
again.

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

Features

• PLL (phase locked loop) synthesized tuning radio.
• Water-resistant for all –weather use.
• MEGA BASS for dynamic bass sound.
• 15 stations can be preset.

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 anything fall into the unit, remove the battery and have the unit checked

by qualified personnel before operating any further.

• To clean the casing, use a soft cloth dampened with a mild detergent solution.
• In vehicles or buildings, radio reception may be difficult or noisy. Try listening

near a window.

• If the Driver units become wet, wipe them with a dry towel  before use.
• Clean the earbuds by hand-washing with a mild detergent solution. Remove the

earbuds when you clean them. After cleaning, dry the earbuds well before use.

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.

Cautions on Water-Resistance

This unit is designed so that it can be used with slight exposure to rain, snow and
other forms of moisture, but there are several points on which caution should be
observed.
• Do not allow it to come in contact with large amounts of water.
• Do not immerse it in water.
• If water should get on it or if it should fall into water, take it out immediately

and wipe it off with a dry cloth. 

The interior of the battery compartment

has no water-resistance.

 The battery may corrode, so wipe out the interior

of the battery compartment as follows.
– Open or close the battery compartment with dry hands in a place without

exposure to any water.

– Wipe off the battery and the inside of the battery compartment. Give special

attention to the contacts, so that no water remains on them.

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

FM Stereo PLL Synthesized
Headphone Radio

© 2006   Sony Corporation          Printed in China

2-666-811-

21

(1)

SRF-HM10

Operating Instructions

Troubleshooting

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

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 

POWER

 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 is tuned.

• 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 has 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

FM

87.5 – 108 MHz

0.1 MHz

Power output

4 mW + 4 mW (at 10 % harmonic distortion)

Headphone type

Closed, dynamic

Power requirements

1.5 V DC, one size AAA (R03) battery

Mass

Approx. 63.8 g (2.3 oz.) incl. battery

Supplied accessories

Earbuds (S 

×

 2, L 

×

 2)

Design and specifications are subject to change without notice.

Lead-free solder is used for soldering.
Halogenated flame retardants are not used in printed wiring boards.

Printed on 100% recycled paper using
VOC (Volatile Organic Compound)-
free vegetable oil based ink.

Size AAA
(R03) 

×

 1

Insert the 

E

 side of

the battery first.

x

x

FM WALKMAN

g

Reviews: